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WO2018010433A1 - 七片式广角镜头 - Google Patents

七片式广角镜头 Download PDF

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Publication number
WO2018010433A1
WO2018010433A1 PCT/CN2017/074324 CN2017074324W WO2018010433A1 WO 2018010433 A1 WO2018010433 A1 WO 2018010433A1 CN 2017074324 W CN2017074324 W CN 2017074324W WO 2018010433 A1 WO2018010433 A1 WO 2018010433A1
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WO
WIPO (PCT)
Prior art keywords
lens
angle
piece wide
angle lens
refractive power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/074324
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English (en)
French (fr)
Inventor
贾远林
戴付建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sunny Optics Co Ltd
Original Assignee
Zhejiang Sunny Optics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sunny Optics Co Ltd filed Critical Zhejiang Sunny Optics Co Ltd
Priority to US15/578,703 priority Critical patent/US10564395B2/en
Priority to JP2017559867A priority patent/JP6626515B2/ja
Publication of WO2018010433A1 publication Critical patent/WO2018010433A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/04—Reversed telephoto objectives
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components

Definitions

  • the invention relates to a wide-angle lens, in particular to a wide-angle lens composed of seven lenses.
  • wide-angle lenses including super wide-angle lenses, fisheye lenses and other lenses with larger angles than standard lenses, play an important role in more and more occasions, such as photography, security, measurement, projection, entertainment, car, etc.
  • photography because of the short-focus large field of view of the wide-angle lens, the unique barrel distortion formed will bring a strong visual impact to the observer.
  • the measurement aspect because of the large field of view of the wide-angle lens, one imaging can obtain more information, so it can measure more data.
  • projection Common projection lenses are imaged on a flat surface, while large-field fisheye lens images can be imaged in a circular sky curtain. During viewing, there will be a view of the starry sky in the summer night sky. An immersive viewing experience.
  • the photosensitive element of the general optical system is nothing more than photosensitive coupling.
  • CCD complementary oxidized metal semiconductor components
  • CMOS complementary oxidized metal semiconductor components
  • the general wide-angle lens is mainly made of all-glass structure.
  • the lens is composed of seven glass lenses, and provides a photographic objective lens with a large relative aperture and a small volume.
  • the known all-glass structure cannot further shorten the total length of the system and expand the angle of view while ensuring the image quality.
  • the emergence of precision machining makes it possible to process industrial production of aspherical surfaces.
  • Precision machining technology includes not only direct grinding aspherical processing of glass materials, but also die-casting aspherical processing of glass materials and injection molding aspherical processing of plastic materials.
  • the use of aspherical surfaces can not only significantly improve the image quality, reduce aberrations, but also reduce the number of lenses and reduce the size of the lens.
  • the material of the aspherical lens is both glass and plastic.
  • the aspherical lens of the glass material is divided into two methods: grinding and die casting. The use of aspherical surfaces is of great help to the performance improvement of wide-angle lenses.
  • the present invention aims to provide a miniaturized, high image quality, using an aspherical seven-piece wide-angle lens to overcome the drawbacks of the prior art.
  • the present invention provides a seven-piece wide-angle lens.
  • the seven-piece wide-angle lens provided by the present invention includes, in order from the object side to the image side, a first lens having a negative refractive power, a second lens having a negative refractive power, a third lens having a refractive power, and a third having a positive refractive power.
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • f6 is the effective focal length of the sixth lens
  • f7 is the effective focal length of the seventh lens.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 1.5 ⁇ f4/f ⁇ 3, where f4 is the effective focal length of the fourth lens; and f is the effective focal length of the seven-chip wide-angle lens.
  • a wide-angle lens requires a small focal length, and a positive focal length of the fourth lens is too long to correct the aberration; too short is not conducive to processing. Satisfying the above formula is conducive to ensuring high image quality while taking into account good processability.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 1.3 ⁇ ImgH/f ⁇ 2.5, wherein ImgH is half of the diagonal length of the effective pixel area on the imaging surface; f is a seven-chip wide-angle lens Effective focal length.
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • f is a seven-chip wide-angle lens Effective focal length.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 0.2 ⁇ T/TTL ⁇ 0.5, where ⁇ T is the sum of the axial separation distances between any two adjacent lenses of the first lens to the seventh lens. TTL is the on-axis distance from the side of the first lens to the imaging surface.
  • the interval is too long, resulting in uneven distribution of single lens size, and is not conducive to miniaturization; too short is not easy to ensure the formation, it is not easy to correct the off-axis aberration, and increase the ghost image. risk. Satisfy the above formula while taking into account the craftsmanship and image quality.
  • the seven-piece wide-angle lens of the present invention the fifth lens has a negative refractive power.
  • the seven-piece wide-angle lens of the present invention the sixth lens has a positive refractive power, and the image side is a convex surface.
  • the seven-piece wide-angle lens of the present invention the seventh lens has a negative refractive power.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: -4.1 ⁇ f1/f ⁇ -2.5, where f1 is the effective focal length of the first lens; f is the effective focal length of the seven-chip wide-angle lens.
  • the focal length of the system is generally short.
  • the back focus is not easy to be long, and is usually smaller than the focal length of the lens system; the negative refractive power of the first lens can ensure sufficient back focus, which is convenient for assembly and can compress the main ray angle of the external field of view. . Satisfying the above formula is conducive to achieving a large angle of view, ensuring a sufficiently long back focus; while effectively controlling the generation of aberrations, it is easy to manufacture the lens.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 0.55 ⁇ CT3/CT6 ⁇ 1.3, wherein CT3 is the center thickness of the third lens on the optical axis; CT6 is the sixth lens on the optical axis. The thickness of the center.
  • Excessive thickness of the third lens is not conducive to the correction of monochromatic aberrations, and too small is not conducive to assembly.
  • Excessive thickness of the sixth lens is not conducive to the correction of chromatic aberration, and too small is not conducive to lens manufacturing. Satisfy the above formula to effectively balance the craftsmanship and image quality.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 0.25 ⁇ CT5/CT6 ⁇ 0.5,
  • CT5 is the center thickness of the fifth lens on the optical axis
  • CT6 is the center thickness of the sixth lens on the optical axis. If the ratio of the above formula is too large, it is not conducive to eliminating the chromatic aberration; if it is too small, the fifth lens is too thin and the processability is not good. Satisfy the above formula to effectively balance chromatic aberration and processability.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 0.7 ⁇ DT31 / DT62 ⁇ 1.1, wherein DT31 is the effective radius of the side of the third lens; DT62 is the effective radius of the side of the sixth lens image.
  • the third lens aperture is too large to correct the aberration, and too small is not conducive to assembly.
  • the large aperture of the sixth lens is not conducive to miniaturization of the lens, and too small is not conducive to correcting aberrations. Satisfy the above formula to ensure high image quality, while taking into account the craftsmanship and miniaturization.
  • the seven-piece wide-angle lens of the present invention the fifth lens has a positive refractive power, and the image side is convex.
  • the seven-piece wide-angle lens of the present invention has a negative refractive power, and the object side surface is a concave surface, and the image side surface is a concave surface.
  • the seven-piece wide-angle lens of the present invention the seventh lens has a positive refractive power.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 1 ⁇ f3 / f5 ⁇ 3.5, where f3 is the effective focal length of the third lens, and f5 is the effective focal length of the fifth lens.
  • the fifth lens bears excessive refractive power, the processability is too bad and is not conducive to correcting aberrations; if it is too small, the third lens diameter is not easy to be enlarged, resulting in poor assembly processability. Satisfying the above formula can effectively guarantee the lens processability and assembly processability.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 0.3 ⁇ f5 / f7 ⁇ 0.6, where f5 is the effective focal length of the fifth lens, and f7 is the effective focal length of the seventh lens.
  • the fifth and seventh lenses cooperate with the sixth lens to correct the chromatic aberration of the system. Satisfying the above formula is advantageous for correcting the chromatic aberration and ensuring the processability of the fifth lens.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 0.7 ⁇ R10 / R11 ⁇ 1.2; wherein R10 is the radius of curvature of the side surface of the fifth lens image; R11 is the radius of curvature of the side surface of the sixth lens object.
  • the fifth lens and the sixth lens cooperate to correct the chromatic aberration of the system.
  • the curvature radius of the fifth lens image side surface and the sixth lens object side surface are too large, it is not suitable for correcting the chromatic aberration; when it is too close, it is not suitable for correcting the monochromatic aberration.
  • the ratio of the above formula achieves a balance of various aberrations.
  • the seven-piece wide-angle lens of the present invention satisfies the following relationship: 0.6 ⁇ DT62 / DT72 ⁇ 1, wherein DT62 is the effective radius of the side of the sixth lens image; DT72 is the effective radius of the side of the seventh lens image.
  • the invention has the beneficial effects that a large angle of view can be obtained by rationally distributing the refractive power of the seven lenses; and the high resolution and high image quality are ensured by reasonable matching between design parameters and design parameters. At the same time, a miniaturized design is realized; and the present invention can achieve good processability.
  • the invention is also suitable for use in combination with plastic aspheric surfaces, which is advantageous in reducing costs. Combined with the hybrid design of glass lens and plastic lens, good environmental reliability can be achieved.
  • FIG. 1 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 1;
  • FIG. 2 is an axial chromatic aberration diagram of the seven-piece wide-angle lens according to the first embodiment
  • 3 is an astigmatism diagram of the seven-chip wide-angle lens of the first embodiment
  • FIG. 4 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens according to the first embodiment
  • FIG. 5 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 2;
  • FIG. 6 is an axial chromatic aberration diagram of the seven-piece wide-angle lens according to the second embodiment
  • FIG. 7 is an astigmatism diagram of a seven-chip wide-angle lens according to Embodiment 2;
  • FIG. 8 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens according to the second embodiment
  • FIG. 9 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 3.
  • FIG. 10 is an axial chromatic aberration diagram of the seven-piece wide-angle lens according to Embodiment 3;
  • Figure 11 is an astigmatism diagram of the seven-piece wide-angle lens of the third embodiment.
  • FIG. 13 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 4.
  • Figure 14 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the fourth embodiment
  • Figure 15 is an astigmatism diagram of the seven-piece wide-angle lens of the fourth embodiment.
  • 16 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens of the fourth embodiment
  • FIG. 17 is a schematic structural view of a seven-chip wide-angle lens according to Embodiment 5;
  • Figure 19 is an astigmatism diagram of the seven-piece wide-angle lens of the fifth embodiment.
  • FIG. 21 is a schematic structural view of a seven-chip wide-angle lens according to Embodiment 6;
  • Figure 22 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the sixth embodiment
  • Figure 23 is an astigmatism diagram of the seven-piece wide-angle lens of the sixth embodiment.
  • Figure 24 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens of the sixth embodiment.
  • FIG. 25 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 7;
  • Figure 26 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the seventh embodiment
  • Figure 27 is an astigmatism diagram of the seven-chip wide-angle lens of the seventh embodiment
  • FIG. 29 is a schematic structural view of a seven-chip wide-angle lens according to Embodiment 8.
  • Figure 30 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens according to the eighth embodiment.
  • Figure 31 is an astigmatism diagram of the seven-chip wide-angle lens of the eighth embodiment.
  • FIG. 33 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 9;
  • Figure 34 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the ninth embodiment
  • Figure 35 is an astigmatism diagram of the seven-chip wide-angle lens of the ninth embodiment.
  • FIG. 37 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 10.
  • FIG. 41 is a schematic structural view of a seven-chip wide-angle lens according to Embodiment 11;
  • Figure 42 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens according to the eleventh embodiment
  • Figure 43 is an astigmatism diagram of the seven-chip wide-angle lens of the eleventh embodiment.
  • Figure 44 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens according to the eleventh embodiment.
  • Figure 46 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the twelfth embodiment
  • Figure 47 is an astigmatism diagram of the seven-chip wide-angle lens of the twelfth embodiment
  • Figure 48 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens according to the twelfth embodiment
  • FIG. 49 is a schematic structural view of a seven-chip wide-angle lens according to Embodiment 13;
  • Figure 50 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the thirteenth embodiment
  • Figure 51 is an astigmatism diagram of the seven-chip wide-angle lens of the thirteenth embodiment.
  • Figure 52 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens according to the thirteenth embodiment
  • FIG. 53 is a schematic structural view of a seven-chip wide-angle lens according to Embodiment 14;
  • Figure 54 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the fourteenth embodiment
  • Figure 55 is an astigmatism diagram of the seven-chip wide-angle lens of the fourteenth embodiment.
  • Figure 56 is a magnification chromatic aberration diagram of the seven-piece wide-angle lens of the fourteenth embodiment
  • 57 is a schematic structural view of a seven-chip wide-angle lens according to Embodiment 15;
  • Figure 58 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the fifteenth embodiment
  • Figure 59 is an astigmatism diagram of the seven-piece wide-angle lens of the fifteenth embodiment.
  • Figure 60 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens of the fifteenth embodiment
  • Figure 61 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 16.
  • Figure 62 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the sixteenth embodiment
  • Figure 63 is an astigmatism diagram of the seven-chip wide-angle lens of the sixteenth embodiment.
  • Figure 64 is a magnification chromatic aberration diagram of the seven-chip wide-angle lens of the sixteenth embodiment
  • Figure 65 is a schematic structural view of a seven-piece wide-angle lens according to Embodiment 17;
  • Figure 66 is a diagram showing the axial chromatic aberration of the seven-piece wide-angle lens of the seventeenth embodiment
  • Figure 67 is an astigmatism diagram of the seven-chip wide-angle lens of the seventeenth embodiment.
  • Figure 68 is a magnification chromatic aberration diagram of the seven-piece wide-angle lens of the seventeenth embodiment.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 1, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a negative refractive power, a sixth lens L6 having a positive refractive power and a convex side of the image side thereof, and a negative refractive power
  • the seventh lens L7 and the filter L8 is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power.
  • a third lens L3 having a positive refractive power
  • a fourth lens L4 having a positive refractive power
  • a fifth lens L5 having
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -4.95 Effective focal length of the second lens: f2 (mm) -2.66 Effective focal length of the third lens: f3 (mm) 3.7 Effective focal length of the fourth lens: f4 (mm) 2.11 Effective focal length of the fifth lens: f5 (mm) -2.33 Effective focal length of the sixth lens: f6 (mm) 2.37 Effective focal length of the seventh lens: f7 (mm) -6.34 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.28 Optical value: Fno 2.4 Half angle of view: HFOV (°) 110 CT3/TTL 0.11
  • CT3 is the center thickness of the third lens on the optical axis
  • CT5 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the third lens on the optical axis
  • TTL is the first lens side to imaging The on-axis distance of the surface
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • DT31 is the third lens The effective radius of the side
  • DT62 is the effective radius of the side of the sixth lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspheric high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image plane, distortion, etc. on the basis of achieving a super wide angle of 110°, see Figures 2, 3, and 4 And maintains good processability while achieving miniaturization.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 5, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a negative refractive power, a sixth lens L6 having a positive refractive power and a convex side of the image side thereof, and a negative refractive power
  • the seventh lens L7 and the filter L8 is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power.
  • a third lens L3 having a positive refractive power
  • a fourth lens L4 having a positive refractive power
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -4.58 Effective focal length of the second lens: f2 (mm) -2.53 Effective focal length of the third lens: f3 (mm) 5.25 Effective focal length of the fourth lens: f4 (mm) 2.01 Effective focal length of the fifth lens: f5 (mm) -2.87 Effective focal length of the sixth lens: f6 (mm) 2.03 Effective focal length of the seventh lens: f7 (mm) -4.50 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.17 Optical value: Fno 2.60 Half angle of view: HFOV (°) 106 CT3/TTL 0.07 F6/f7 -0.45 F4/f 1.72 ImgH/f 2.01 ⁇ T/TTL 0.36 F1/f -3.92 CT3/CT6 0.59 CT5/CT6 0.34 DT31/DT62 0.97
  • CT3 is the center thickness of the third lens on the optical axis
  • CT5 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the third lens on the optical axis
  • TTL is the first lens side to imaging The on-axis distance of the surface
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • DT31 is the third lens The effective radius of the side
  • DT62 is the effective radius of the side of the sixth lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspheric high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, distortion, etc. on the basis of achieving a super wide angle of 110°, see Figures 6, 7, and 8. And maintains good processability while achieving miniaturization.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 9, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a negative refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a negative refractive power, a sixth lens L6 having a positive refractive power and a convex side of the image side thereof, and a negative refractive power
  • the seventh lens L7 and the filter L8 is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power.
  • a third lens L3 having a negative refractive power
  • a fourth lens L4 having a positive refractive power
  • a fifth lens L5 having
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -5.18 Effective focal length of the second lens: f2 (mm) -3.33 Effective focal length of the third lens: f3 (mm) -42.35 Effective focal length of the fourth lens: f4 (mm) 2.05 Effective focal length of the fifth lens: f5 (mm) -4.00 Effective focal length of the sixth lens: f6 (mm) 2.07 Effective focal length of the seventh lens: f7 (mm) -3.12 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.29 Optical value: Fno 2.39 Half angle of view: HFOV (°) 100 CT3/TTL 0.15 F6/f7 -0.66 F4/f 1.58 ImgH/f 1.75 ⁇ T/TTL 0.28 F1/f -4.00 CT3/CT6 1.13 CT5/CT6 0.31 DT31/DT62 0.76
  • CT3 is the center thickness of the third lens on the optical axis
  • CT5 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the third lens on the optical axis
  • TTL is the first lens side to imaging The on-axis distance of the surface
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • DT31 is the third lens The effective radius of the side
  • DT62 is the effective radius of the side of the sixth lens image.
  • the detailed design information used in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspheric high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, and the distortion on the basis of achieving a super wide angle of 110°, see FIGS. 10, 11, and 12. And maintains good processability while achieving miniaturization.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 13, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a negative refractive power, a sixth lens L6 having a positive refractive power and a convex side of the image side thereof, and a negative refractive power
  • the seventh lens L7 and the filter L8 is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power.
  • a third lens L3 having a positive refractive power
  • a fourth lens L4 having a positive refractive power
  • a fifth lens L5 having
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -5.04 Effective focal length of the second lens: f2 (mm) -2.72 Effective focal length of the third lens: f3 (mm) 3.32 Effective focal length of the fourth lens: f4 (mm) 2.34 Effective focal length of the fifth lens: f5 (mm) -2.28 Effective focal length of the sixth lens: f6 (mm) 2.17 Effective focal length of the seventh lens: f7 (mm) -5.33 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.26 Optical value: Fno 2.39 Half angle of view: HFOV (°) 106 CT3/TTL 0.11 F6/f7 -0.41 F4/f 1.86 ImgH/f 1.87
  • CT3 is the center thickness of the third lens on the optical axis
  • CT5 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the third lens on the optical axis
  • TTL is the first lens side to imaging The on-axis distance of the surface
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • DT31 is the third lens The effective radius of the side
  • DT62 is the effective radius of the side of the sixth lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens of the present embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, distortion, etc. on the basis of achieving a super wide angle of 110°, see FIGS. 14, 15, 16 And maintains good processability while achieving miniaturization.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 17, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a negative refractive power, a sixth lens L6 having a positive refractive power and a convex side of the image side thereof, and a negative refractive power
  • the seventh lens L7 and the filter L8 is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power.
  • a third lens L3 having a positive refractive power
  • a fourth lens L4 having a positive refractive power
  • a fifth lens L5 having
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and Like the side surface S8,
  • the fifth lens L5 has an image side surface S9 whose object side surface coincides with the image side surface S8 of the fourth lens L4
  • the sixth lens L6 has the object side surface S10 and the image side surface S11
  • the seventh lens L7 has the object side surface S12 and Like the side surface S13
  • the filter L8 has an object side surface S14 and an image side surface S15.
  • the seven-piece wide-angle lens imaging surface S16 described in this embodiment is located on the image side of the filter L8 for mounting the photosensitive element.
  • Effective focal length of the first lens f1 (mm) -4.85 Effective focal length of the second lens: f2 (mm) -2.73 Effective focal length of the third lens: f3 (mm) 3.62 Effective focal length of the fourth lens: f4 (mm) 1.92 Effective focal length of the fifth lens: f5 (mm) -2.16 Effective focal length of the sixth lens: f6 (mm) 2.35 Effective focal length of the seventh lens: f7 (mm) -6.87 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.24 Optical value: Fno 2.34 Half angle of view: HFOV (°) 105 CT3/TTL 0.11 F6/f7 -0.34 F4/f 1.55 ImgH/f 1.88 ⁇ T/TTL 0.38 F1/f -3.90 CT3/CT6 1.25 CT5/CT6 0.45 DT31/DT62 1.05
  • CT3 is the center thickness of the third lens on the optical axis
  • CT5 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the third lens on the optical axis
  • TTL is the first lens side to imaging The on-axis distance of the surface
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • DT31 is the third lens The effective radius of the side
  • DT62 is the effective radius of the side of the sixth lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens of the present embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, and the distortion on the basis of achieving a super wide angle of 110°, see FIGS. 18, 19, and 20 And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens of the present embodiment is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a negative refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a negative refractive power, a sixth lens L6 having a positive refractive power and a convex side of the image side thereof, and a negative refractive power
  • the seventh lens L7 and the filter L8 is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power.
  • a third lens L3 having a negative refractive power
  • a fourth lens L4 having a positive refractive power
  • a fifth lens L5 having a negative refractive power
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -4.97 Effective focal length of the second lens: f2 (mm) -2.87 Effective focal length of the third lens: f3 (mm) -14.51 Effective focal length of the fourth lens: f4 (mm) 2.05 Effective focal length of the fifth lens: f5 (mm) -5.79 Effective focal length of the sixth lens: f6 (mm) 2.02 Effective focal length of the seventh lens: f7 (mm) -3.09 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.24 Optical value: Fno 2.39 Half angle of view: HFOV (°) 105
  • CT3/TTL 0.17 F6/f7 -0.66 F4/f 1.65 ImgH/f 1.88 ⁇ T/TTL 0.31 F1/f -4.00 CT3/CT6 1.17 CT5/CT6 0.30 DT31/DT62 0.73
  • CT3 is the center thickness of the third lens on the optical axis
  • CT5 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the third lens on the optical axis
  • TTL is the first lens side to imaging The on-axis distance of the surface
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • DT31 is the third lens The effective radius of the side
  • DT62 is the effective radius of the side of the sixth lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspheric high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, distortion, etc. on the basis of achieving a super wide angle of 110°, see FIGS. 22, 23, and 24 And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 25, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a negative refractive power, a sixth lens L6 having a positive refractive power and a convex side of the image side thereof, and a negative refractive power
  • the seventh lens L7 and the filter L8 is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power.
  • a third lens L3 having a positive refractive power
  • a fourth lens L4 having a positive refractive power
  • a fifth lens L5 having
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -5.00 Effective focal length of the second lens: f2 (mm) -2.68 Effective focal length of the third lens: f3 (mm) 4.10 Effective focal length of the fourth lens: f4 (mm) 1.98 Effective focal length of the fifth lens: f5 (mm) -2.71 Effective focal length of the sixth lens: f6 (mm) 2.42 Effective focal length of the seventh lens: f7 (mm) -4.75 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.25 Optical value: Fno 2.39 Half angle of view: HFOV (°) 105 CT3/TTL 0.11 F6/f7 -0.51 F4/f 1.58 ImgH/f 1.87 ⁇ T/TTL 0.38 F1/f -4.00 CT3/CT6 0.91 CT5/CT6 0.35 DT31/DT62 0.96
  • CT3 is the center thickness of the third lens on the optical axis
  • CT5 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the third lens on the optical axis
  • TTL is the first lens side to imaging The on-axis distance of the surface
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • DT31 is the third lens The effective radius of the side
  • DT62 is the effective radius of the side of the sixth lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspheric high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, distortion, etc. on the basis of achieving a super wide angle of 110°, see Figures 26, 27, and 28 And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 29, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a negative refractive power, a sixth lens L6 having a positive refractive power and a convex side of the image side thereof, and a negative refractive power
  • the seventh lens L7 and the filter L8 is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power.
  • a third lens L3 having a positive refractive power
  • a fourth lens L4 having a positive refractive power
  • a fifth lens L5 having
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -4.89 Effective focal length of the second lens: f2 (mm) -2.65 Effective focal length of the third lens: f3 (mm) 3.43 Effective focal length of the fourth lens: f4 (mm) 1.85 Effective focal length of the fifth lens: f5 (mm) -3.30 Effective focal length of the sixth lens: f6 (mm) 3.12 Effective focal length of the seventh lens: f7 (mm) -5.54 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.22 Optical value: Fno 2.4 Half angle of view: HFOV (°) 106 CT3/TTL 0.11 F6/f7 -0.56 F4/f 1.51 ImgH/f 1.92 ⁇ T/TTL 0.35 F1/f -4.00 CT3/CT6 1.27 CT5/CT6 0.45 DT31/DT62 1.07
  • CT3 is the center thickness of the third lens on the optical axis
  • CT5 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the third lens on the optical axis
  • TTL is the first lens side to imaging The on-axis distance of the surface
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • DT31 is the third lens The effective radius of the side
  • DT62 is the effective radius of the side of the sixth lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspheric high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, and the distortion on the basis of achieving a super wide angle of 110°, see FIGS. 30, 31, and 32. And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 33, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -5.91 Effective focal length of the second lens: f2 (mm) -2.48 Effective focal length of the third lens: f3 (mm) 3.29 Effective focal length of the fourth lens: f4 (mm) 3.34 Effective focal length of the fifth lens: f5 (mm) 2.36 Effective focal length of the sixth lens: f6 (mm) -1.81 Effective focal length of the seventh lens: f7 (mm) 4.64 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.12 Optical value: Fno 2.40 Total lens length: TTL (mm) 10.00 CT3/TTL 0.14 F6/f7 -0.39 F4/f 2.99 ImgH/f 2.38
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the axial separation distance between any two adjacent lenses of the first lens to the seventh lens
  • the sum of ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the radius of curvature of the side of the sixth lens object
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10, A12) of the aspherical lens in the seven-piece wide-angle lens of the present embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, and the distortion on the basis of achieving a super wide angle of 110°, see FIGS. 34, 35, and 36. And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 37, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -3.55 Effective focal length of the second lens: f2 (mm) -3.71 Effective focal length of the third lens: f3 (mm) 8.28 Effective focal length of the fourth lens: f4 (mm) 3.23 Effective focal length of the fifth lens: f5 (mm) 2.44 Effective focal length of the sixth lens: f6 (mm) -1.92 Effective focal length of the seventh lens: f7 (mm) 6.34 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.59 Optical value: Fno 2.46 Total lens length: TTL (mm) 10.00 CT3/TTL 0.14 F6/f7 -0.30 F4/f 2.04 ImgH/f 1.59 ⁇ T/TTL 0.29 F3/f5 3.39 F5/f7 0.39 R10/R11 1.10 DT62/DT72 0.80
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the axial separation distance between any two adjacent lenses of the first lens to the seventh lens
  • the sum of ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the radius of curvature of the side of the sixth lens object
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction of the off-axis aberration, the brightness of the edge image surface, and the distortion on the basis of achieving a super wide angle of 110°, see FIGS. 38, 39, and 40. And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 41, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -4.40 Effective focal length of the second lens: f2 (mm) -2.76 Effective focal length of the third lens: f3 (mm) 3.59 Effective focal length of the fourth lens: f4 (mm) 2.83 Effective focal length of the fifth lens: f5 (mm) 2.73 Effective focal length of the sixth lens: f6 (mm) -2.02 Effective focal length of the seventh lens: f7 (mm) 8.51 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.41 Optical value: Fno 2.44 Total lens length: TTL (mm) 9.99 CT3/TTL 0.08 F6/f7 -0.24 F4/f 2.01 ImgH/f 1.77 ⁇ T/TTL 0.41 F3/f5 1.32 F5/f7 0.32 R10/R11 0.86 DT62/DT72 0.64
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the axial separation distance between any two adjacent lenses of the first lens to the seventh lens
  • the sum of ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the radius of curvature of the side of the sixth lens object
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image plane, distortion, etc. on the basis of achieving a super wide angle of 110°, see Figures 42, 43 and 44. And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 45, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -3.84 Effective focal length of the second lens: f2 (mm) -3.45 Effective focal length of the third lens: f3 (mm) 5.88 Effective focal length of the fourth lens: f4 (mm) 3.16 Effective focal length of the fifth lens: f5 (mm) 2.31 Effective focal length of the sixth lens: f6 (mm) -1.84 Effective focal length of the seventh lens: f7 (mm) 7.04 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.58 Optical value: Fno 2.45 Total lens length: TTL (mm) 10.00 CT3/TTL 0.15 F6/f7 -0.26 F4/f 2.00 ImgH/f 1.58 ⁇ T/TTL 0.32 F3/f5 2.55 F5/f7 0.33 R10/R11 1.03 DT62/DT72 0.78
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the first lens The sum of the axial distances between any two adjacent lenses of the seventh lens
  • ImgH is half the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the sixth lens The radius of curvature of the side
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on off-axis aberration, brightness and distortion of the edge image surface on the basis of achieving a super wide angle of 110°, see FIGS. 46, 47, and 48. And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 49, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface Six lens L6, with positive refractive power Seven lenses L7, filter L8.
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -3.70 Effective focal length of the second lens: f2 (mm) -4.55 Effective focal length of the third lens: f3 (mm) 6.81 Effective focal length of the fourth lens: f4 (mm) 3.26 Effective focal length of the fifth lens: f5 (mm) 2.57 Effective focal length of the sixth lens: f6 (mm) -1.82 Effective focal length of the seventh lens: f7 (mm) 6.88 Effective focal length of a seven-piece wide-angle lens: f(mm) 1.63 Optical value: Fno 2.45 Total lens length: TTL (mm) 10.00 CT3/TTL 0.11 F6/f7 -0.26 F4/f 2.00 ImgH/f 1.53 ⁇ T/TTL 0.33 F3/f5 2.66 F5/f7 0.37 R10/R11 1.03 DT62/DT72 0.84
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the axial separation distance between any two adjacent lenses of the first lens to the seventh lens
  • the sum of ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the radius of curvature of the side of the sixth lens object
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness and distortion of the edge image surface on the basis of achieving a super wide angle of 110°, see FIGS. 50, 51, and 52. And maintains good processability while achieving miniaturization.
  • Embodiment 14 is a diagrammatic representation of Embodiment 14:
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 53, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -3.61
  • Effective focal length of the second lens f2 (mm) -3.35
  • Effective focal length of the third lens f3 (mm) 4.97
  • Effective focal length of the fourth lens f4 (mm) 4.69
  • Effective focal length of the fifth lens f5 (mm) 2.11
  • Effective focal length of the sixth lens f6 (mm) -1.89
  • Total lens length TTL (mm) 10.00 CT3/TTL 0.13 F6/f7 -0.28 F4/f 2.96 ImgH/f 1.53 ⁇ T/TTL 0.32 F3/f5 2.36 F5/f7 0.32 R10/R11 1.06 DT62/DT72 0.83
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the axial separation distance between any two adjacent lenses of the first lens to the seventh lens
  • the sum of ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the radius of curvature of the side of the sixth lens object
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, distortion, etc. on the basis of achieving a super wide angle of 110°, see Figures 54, 55, 56. And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens of the present embodiment is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -3.62
  • Effective focal length of the second lens f2 (mm) -4.17
  • Effective focal length of the third lens f3 (mm) 4.34
  • Effective focal length of the fourth lens f4 (mm) 3.30
  • Effective focal length of the fifth lens f5 (mm) 3.06
  • Effective focal length of the sixth lens f6 (mm) -1.92
  • Total lens length TTL (mm) 10.00 CT3/TTL 0.14
  • F3/f5 1.42 F5/f7 0.53
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the axial separation distance between any two adjacent lenses of the first lens to the seventh lens
  • the sum of ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the radius of curvature of the side of the sixth lens object
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, distortion, etc. on the basis of achieving a super wide angle of 110°, see Figures 58, 59, 60. And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the present embodiment is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side S9
  • the image side surface S10 the sixth lens L6 has an object side surface S11 and an image side surface S12
  • the seventh lens L7 has an object side surface S13 and an image side surface S14
  • the color filter L8 has an object side surface S15 and an image side surface S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -3.43
  • Effective focal length of the second lens f2 (mm) -3.73
  • Effective focal length of the third lens f3 (mm) 7.29
  • Effective focal length of the fourth lens f4 (mm) 3.13
  • Effective focal length of the fifth lens f5 (mm) 2.45
  • Effective focal length of the sixth lens f6 (mm) -1.83
  • F3/f5 2.97 F5/f7 0.38
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the axial separation distance between any two adjacent lenses of the first lens to the seventh lens
  • the sum of ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the radius of curvature of the side of the sixth lens object
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, distortion, etc. on the basis of achieving a super wide angle of 110°, see Figures 62, 63, and 64. And maintains good processability while achieving miniaturization.
  • the seven-piece wide-angle lens according to the embodiment, as shown in FIG. 65, is arranged in order from the object side to the image side along the optical axis: a first lens L1 having a negative refractive power, and a second lens L2 having a negative refractive power. a third lens L3 having a positive refractive power, a fourth lens L4 having a positive refractive power, a fifth lens L5 having a positive refractive power and a convex side of the image side thereof, and a first surface having a negative refractive power and a concave side of the object side surface
  • the first lens L1 has an object side surface S1 and an image side surface S2
  • the second lens L2 has an object side surface S3 and an image side surface S4
  • the third lens L3 has an object side surface S5 and an image side surface S6
  • the fourth lens L4 has an object side surface S7 and
  • the fifth lens L5 has the object side surface S9 and the image side surface S10
  • the sixth lens L6 has the object side surface S11 and the image side surface S12
  • the seventh lens L7 has the object side surface S13 and the image side surface S14
  • the filter L8 has the object side surface. S15 and image side S16.
  • the seven-piece wide-angle lens imaging surface S17 described in this embodiment is located on the image side of the filter L8, and is capable of mounting a photosensitive element.
  • Effective focal length of the first lens f1 (mm) -4.93 Effective focal length of the second lens: f2 (mm) -12.68 Effective focal length of the third lens: f3 (mm) 7.54 Effective focal length of the fourth lens: f4 (mm) 7.59 Effective focal length of the fifth lens: f5 (mm) 4.88 Effective focal length of the sixth lens: f6 (mm) -3.76 Effective focal length of the seventh lens: f7 (mm) 8.52 Effective focal length of a seven-piece wide-angle lens: f(mm) 3.02 Optical value: Fno 2.50
  • Total lens length TTL (mm) 21.01 CT3/TTL 0.07 F6/f7 -0.44 F4/f 2.51 ImgH/f 1.38 ⁇ T/TTL 0.23 F3/f5 1.55 F5/f7 0.57 R10/R11 1.00 DT62/DT72 0.77
  • CT3 is the center thickness of the third lens on the optical axis
  • TTL is the on-axis distance from the side of the first lens to the imaging surface
  • ⁇ T is the axial separation distance between any two adjacent lenses of the first lens to the seventh lens
  • the sum of ImgH is half of the diagonal length of the effective pixel area on the imaging surface
  • R10 is the radius of curvature of the side of the fifth lens image
  • R11 is the radius of curvature of the side of the sixth lens object
  • DT62 is the effective radius of the side of the sixth lens image
  • DT72 is the effective radius of the side of the seventh lens image.
  • the specific design adopted by the seven-piece wide-angle lens described in this embodiment is as follows:
  • the aspherical high-order coefficient (A4, A6, A8, A10, A12, A14, A16) of the aspherical lens in the seven-piece wide-angle lens described in this embodiment is as follows:
  • the seven-piece wide-angle lens described in this embodiment performs better correction on the off-axis aberration, the brightness of the edge image surface, and the distortion on the basis of achieving a super wide angle of 110°, see FIGS. 66, 67, 68. And maintains good processability while achieving miniaturization.

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Abstract

一种七片式广角镜头，由物侧至像侧依次包含：具有负屈折力的第一透镜（L1）；具有负屈折力的第二透镜（L2）；具有屈折力的第三透镜（L3）；具有正屈折力的第四透镜（L4）；具有屈折力的第五透镜（L5）；具有屈折力的第六透镜（L6）；具有屈折力的第七透镜（L7）；并满足以下关系式：0.06<CT3/TTL<0.15；-0.7<f6/f7<-0.2；其中，CT3为第三透镜（L3）在光轴上的中心厚度；TTL为第一透镜（L1）物侧面（S1）至成像面的轴上距离；f6为第六透镜（L6）的有效焦距；f7为第七透镜（L7）的有效焦距。通过对7片镜片合理组合，可以获得大的视场角，在保证高分辨率和高成像质量的同时，实现小型化设计和良好的工艺性。

Description

七片式广角镜头 技术领域
本发明涉及一种广角镜头，特别是由七片镜片组成的广角镜头。
背景技术
随着科技的发展，广角镜头，包括超广角镜头、鱼眼镜头等视角大于标准镜头的各种镜头，在越来越多的场合发挥着重要的作用，比如摄影、安防、测量、投影、娱乐、车载等，在摄影方面，因为广角镜头的短焦大视场特性，所形成的独特桶形畸变会给观察者带来强烈的视觉冲击。又如在测量方面，因为广角镜头具有的大视场特点，一次成像可以获得更多的信息量，因此其可以测量得到的数据也更多。又比如投影，常见的投影镜头都是成像在平面上，而大视场鱼眼镜头的成像可以成像在环形的天空幕布中，而在观看中，会有一种置身于夏季夜空中观看星空一般的身临其境的观影感受。又如在车载应用方面，其超大的视场角，可以观察到的空问区域就更宽广，这样在倒车，环视应用的方面将会更加有效；一般光学系统的感光元件不外乎是感光耦合元件(CCD)或互补性氧化金属半导体元件(CMOS)两种。随着半导体制程技术的精进，感光元件的像素尺寸缩小，光学系统趋向于更高像素，更高成像质量；同时，考虑到产品的推广，对镜头的尺寸要求越来越小，同时要求更低的成本。
目前，一般的广角镜头，多采用全玻璃结构为主，如专利号为“WO201603732A1”的专利所示，该镜头由七片玻璃镜片组成，提供一种具有大相对孔径，且体积较小的摄影物镜。但是由于便携式电子产品的日益发展，对摄像镜头的小型化、轻量化、广角化及成像质量等性能提出了进一步更高的要求。为了满足小型化和轻量化的要求，需要进一步缩短镜头的总体长度，并同时结合塑料镜片。而已知的全玻璃结构无法在保证成像质量的情况下，进一步缩短系统总长度，扩大视场角。精密加工的出现，使得非球面的加工工业化生产成为可能，精密加工技术不仅仅包括玻璃材料的直接研磨非球面加工，还包括玻璃材料的压铸非球面加工和塑胶材料的注塑非球面加工。一般来说，非球面的使用，不仅可以显著的提高像质，减小像差，还可以减少镜头的镜片数量，缩小体积。非球面镜片的材料既有玻璃的也有塑胶的，玻璃材料的非球面镜片又分为研磨加工和压铸成型两种方法。非球面的使用，对广角镜头的性能提高有巨大的帮助。
发明内容
本发明旨在提供一种小型化、高成像品质，采用非球面的七片式广角镜头，以克服现有技术存在的缺陷。为此，本发明提供了一种七片式广角镜头。本发明提供的七片式广角镜头，由物侧至像侧依次包含：具有负屈折力的第一透镜；具有负屈折力的第二透镜；具有屈折力的第三透镜；具有正屈折力的第四透镜；具有屈折力的第五透镜；具有屈折力的第六透镜；具有屈折力的第七透镜；并满足以下关系式：0.06<CT3/TTL<0.15；-0.7<f6/f7<-0.2；其中，CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；f6为第六透镜的有效焦距；f7为第七透镜的有效焦距。上述设计有利于在保证本发明所述镜头具有足够大的视角和高成像质量的基础上，实现镜头的小型化。
进一步地，本发明所述的七片式广角镜头满足下列关系式：1.5<f4/f<3，其中，f4为第四透镜的有效焦距；f为七片式广角镜头的有效焦距。
广角镜头需要较小的焦距，第四透镜的正焦距太长则不利于矫正像差；太短则不利于加工。满足上式有利于保证高像质，同时兼顾良好的工艺性。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：1.3<ImgH/f<2.5，其中，ImgH为成像面上有效像素区域对角线长的一半；f为七片式广角镜头的有效焦距。在小于180°的光学系统中，同样的像高下，焦距太长则会产生较大的负畸变；太短则会有较差的工艺性，且不易保证边缘像面的亮度。满足上式能够有效修正畸变，保证画质和可制造性。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：0.2<ΣT/TTL<0.5，其中，ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；TTL为第一透镜物侧面至成像面的轴上距离。
在同样的长度尺寸下，间隔太长则会造成单镜片尺寸分布不均，同时不利于小型化；太短则不易保证组立性，也不易于矫正轴外像差，同时增加产生鬼像的风险。满足上式同时兼顾了工艺性和画质。
更进一步地，本发明所述的七片式广角镜头：第五透镜具有负屈折力。
更进一步地，本发明所述的七片式广角镜头：第六透镜具有正屈折力，其像侧面为凸面。
更进一步地，本发明所述的七片式广角镜头：第七透镜具有负屈折力。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：-4.1<f1/f<-2.5，其中，f1为第一透镜的有效焦距；f为七片式广角镜头的有效焦距。
为了实现大的视角，系统焦距一般较短。对于第一镜片是正屈折力的形式，后焦不易做长，且通常小于镜头系统焦距；第一镜片负的屈折力可以保证足够的后焦，利于组装，同时可以压缩外部视场的主光线角度。满足上式有利于实现大的视场角，保证足够长的后焦；同时有效控制像差的产生，易于镜片制造。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：0.55<CT3/CT6<1.3，其中，CT3为第三透镜在光轴上的中心厚度；CT6为第六透镜在光轴上的中心厚度。
第三透镜厚度过大不利于单色像差的矫正，过小则不利于组装。第六透镜厚度过大不利于色差的矫正，过小则不利于镜片制造。满足上式有效兼顾了工艺性和像质。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：0.25<CT5/CT6<0.5，
其中，CT5为第五透镜在光轴上的中心厚度；CT6为第六透镜在光轴上的中心厚度。上式比值太大则不利于消除色差；太小则第五透镜过薄，工艺性不佳。满足上式可有效平衡色差和工艺性。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：0.7<DT31/DT62<1.1，其中，DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
第三透镜口径太大不利于修正像差，太小则不利于组装。第六透镜口径太大不利于镜头的小型化，太小则不利于修正像差。满足上式可保证高画质，同时兼顾工艺性和小型化。
更进一步地，本发明所述的七片式广角镜头：第五透镜具有正屈折力，其像侧面为凸面。
更进一步地，本发明所述的七片式广角镜头：第六透镜具有负屈折力，其物侧面为凹面，像侧面为凹面。
更进一步地，本发明所述的七片式广角镜头：第七透镜具有正屈折力。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：1<f3/f5<3.5，其中，f3为第三透镜的有效焦距，f5为第五透镜的有效焦距。
上式比值太大则第五透镜承担过多屈折力，工艺性太差且不利于矫正像差；太小则第三透镜口径不易做大，造成组立工艺性不佳。满足上式可有效保证镜片工艺性和组立工艺性。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：0.3<f5/f7<0.6，其中，f5为第五透镜的有效焦距，f7为第七透镜的有效焦距。
第五和第七透镜跟第六透镜配合，可以矫正系统的色差。满足上式有利于修正色差，保证第五透镜的工艺性。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：0.7<R10/R11<1.2；其中，R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径。
第五透镜和第六透镜配合，可以矫正系统的色差。第五透镜像侧面和第六透镜物侧面的曲率半径偏离太大时，不利于修正色差；过于接近时，不利于修正单色像差。上式比值实现了各种像差的平衡。
更进一步地，本发明所述的七片式广角镜头满足下列关系式：0.6<DT62/DT72<1，其中，DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
上式比值太大则不利于系统的小型化，太小则不利于组装。该比值有效平衡了镜头尺寸和工艺性。
有益效果
本发明的有益效果是：通过对七片镜片合理的屈折力分配，可以获得大的视场角；通过合理的设计参数及设计参数之间的匹配关系，在保证高分辨率和高成像质量的同时，实现小型化设计；且采用本发明可以实现良好的工艺性。本发明还适合于结合塑料非球面的应用，有利于降低成本。结合玻璃透镜和塑料透镜的混合设计，可以实现良好的环境可靠性。
附图说明
图1是实施例一所述七片式广角镜头的结构示意图；
图2是实施例一所述七片式广角镜头的轴上色差图；
图3是实施例一所述七片式广角镜头的象散图；
图4是实施例一所述七片式广角镜头的倍率色差图；
图5是实施例二所述七片式广角镜头的结构示意图；
图6是实施例二所述七片式广角镜头的轴上色差图；
图7是实施例二所述七片式广角镜头的象散图；
图8是实施例二所述七片式广角镜头的倍率色差图；
图9是实施例三所述七片式广角镜头的结构示意图；
图10是实施例三所述七片式广角镜头的轴上色差图；
图11是实施例三所述七片式广角镜头的象散图；
图12是实施例三所述七片式广角镜头的倍率色差图；
图13是实施例四所述七片式广角镜头的结构示意图；
图14是实施例四所述七片式广角镜头的轴上色差图；
图15是实施例四所述七片式广角镜头的象散图；
图16是实施例四所述七片式广角镜头的倍率色差图；
图17是实施例五所述七片式广角镜头的结构示意图；
图18是实施例五所述七片式广角镜头的轴上色差图；
图19是实施例五所述七片式广角镜头的象散图；
图20是实施例五所述七片式广角镜头的倍率色差图；
图21是实施例六所述七片式广角镜头的结构示意图；
图22是实施例六所述七片式广角镜头的轴上色差图；
图23是实施例六所述七片式广角镜头的象散图；
图24是实施例六所述七片式广角镜头的倍率色差图；
图25是实施例七所述七片式广角镜头的结构示意图；
图26是实施例七所述七片式广角镜头的轴上色差图；
图27是实施例七所述七片式广角镜头的象散图；
图28是实施例七所述七片式广角镜头的倍率色差图；
图29是实施例八所述七片式广角镜头的结构示意图；
图30是实施例八所述七片式广角镜头的轴上色差图；
图31是实施例八所述七片式广角镜头的象散图；
图32是实施例八所述七片式广角镜头的倍率色差图；
图33是实施例九所述七片式广角镜头的结构示意图；
图34是实施例九所述七片式广角镜头的轴上色差图；
图35是实施例九所述七片式广角镜头的象散图；
图36是实施例九所述七片式广角镜头的倍率色差图；
图37是实施例十所述七片式广角镜头的结构示意图；
图38是实施例十所述七片式广角镜头的轴上色差图；
图39是实施例十所述七片式广角镜头的象散图；
图40是实施例十所述七片式广角镜头的倍率色差图；
图41是实施例十一所述七片式广角镜头的结构示意图；
图42是实施例十一所述七片式广角镜头的轴上色差图；
图43是实施例十一所述七片式广角镜头的象散图；
图44是实施例十一所述七片式广角镜头的倍率色差图；
图45是实施例十二所述七片式广角镜头的结构示意图；
图46是实施例十二所述七片式广角镜头的轴上色差图；
图47是实施例十二所述七片式广角镜头的象散图；
图48是实施例十二所述七片式广角镜头的倍率色差图；
图49是实施例十三所述七片式广角镜头的结构示意图；
图50是实施例十三所述七片式广角镜头的轴上色差图；
图51是实施例十三所述七片式广角镜头的象散图；
图52是实施例十三所述七片式广角镜头的倍率色差图；
图53是实施例十四所述七片式广角镜头的结构示意图；
图54是实施例十四所述七片式广角镜头的轴上色差图；
图55是实施例十四所述七片式广角镜头的象散图；
图56是实施例十四所述七片式广角镜头的倍率色差图；
图57是实施例十五所述七片式广角镜头的结构示意图；
图58是实施例十五所述七片式广角镜头的轴上色差图；
图59是实施例十五所述七片式广角镜头的象散图；
图60是实施例十五所述七片式广角镜头的倍率色差图；
图61是实施例十六所述七片式广角镜头的结构示意图；
图62是实施例十六所述七片式广角镜头的轴上色差图；
图63是实施例十六所述七片式广角镜头的象散图；
图64是实施例十六所述七片式广角镜头的倍率色差图；
图65是实施例十七所述七片式广角镜头的结构示意图；
图66是实施例十七所述七片式广角镜头的轴上色差图；
图67是实施例十七所述七片式广角镜头的象散图；
图68是实施例十七所述七片式广角镜头的倍率色差图。
本发明的实施方式
下面结合附图和实施例对本发明做进一步描述。
实施例一：
本实施例所述的七片式广角镜头，参见附图1，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有负屈折力的第五透镜L5、具有正屈折力且其像侧面为凸面的第六透镜L6、具有负屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -4.95
第二透镜的有效焦距：f2(mm) -2.66
第三透镜的有效焦距：f3(mm) 3.7
第四透镜的有效焦距：f4(mm) 2.11
第五透镜的有效焦距：f5(mm) -2.33
第六透镜的有效焦距：f6(mm) 2.37
第七透镜的有效焦距：f7(mm) -6.34
七片式广角镜头的有效焦距：f(mm) 1.28
光阑值：Fno 2.4
半视场角：HFOV(°) 110
CT3/TTL 0.11
f6/f7 -0.37
f4/f 1.65
ImgH/f 1.94
ΣT/TTL 0.34
f1/f -3.87
CT3/CT6 0.92
CT5/CT6 0.34
DT31/DT62 0.99
其中：CT3为第三透镜在光轴上的中心厚度；CT5为第三透镜在光轴上的中心厚度；CT6为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.68 0.5 1.80/46.6  
S2 球面 2.5539 2.0404    
S3 非球面 -24.4534 0.44 1.54/56.1 0
S4 非球面 1.5538 0.6763   0
S5 球面 4.1468 1.0767 1.85/23.8  
S6 球面 -11.7655 0.4525    
STO 球面 无穷 0.0078    
S7 非球面 4.068 0.7638 1.54/56.1 0
S8 非球面 -1.5032 0.1   0
S9 非球面 -1.9016 0.4 1.64/23.5 0
S10 非球面 7.8233 0.1   0
S11 非球面 2.0609 1.1727 1.54/56.1 0
S12 非球面 -2.7918 0.0499   0
S13 非球面 5.4597 0.9099 1.64/23.5 0
S14 非球面 2.1865 0.3   0
S15 球面 无穷 0.21 1.52/64.2  
S16 球面 无穷 0.8    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 2.77E-03 -1.09E-03 2.01E-04 -1.07E-05 8.44E-18
S4 2.56E-03 2.91E-04 -2.56E-03 -9.17E-04 -5.29E-14
S7 -8.48E-02 -9.35E-02 8.95E-03 -4.28E-01 -4.77E-23
S8 -1.02E-01 -4.35E-02 3.82E-02 -1.43E-01 0.00E+00
S9 1.41E-02 1.70E-02 -1.06E-01 1.13E-01 2.28E-23
S10 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
S11 -7.29E-02 3.32E-02 -1.28E-02 2.06E-03 0.00E+00
S12 -1.26E-02 0.00E+00 0.00E+00 0.00E+00 0.00E+00
S13 -1.17E-01 -7.90E-03 1.31E-03 -2.09E-03 1.48E-21
S14 -9.82E-02 1.28E-02 -9.58E-04 -1.53E-04 0.00E+00
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图2、3、4，并且在实现小型化的同时保持了良好的工艺性。
实施例二：
本实施例所述的七片式广角镜头，参见附图5，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有负屈折力的第五透镜L5、具有正屈折力且其像侧面为凸面的第六透镜L6、具有负屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -4.58
第二透镜的有效焦距：f2(mm) -2.53
第三透镜的有效焦距：f3(mm) 5.25
第四透镜的有效焦距：f4(mm) 2.01
第五透镜的有效焦距：f5(mm) -2.87
第六透镜的有效焦距：f6(mm) 2.03
第七透镜的有效焦距：f7(mm) -4.50
七片式广角镜头的有效焦距：f(mm) 1.17
光阑值：Fno 2.60
半视场角：HFOV(°) 106
CT3/TTL 0.07
f6/f7 -0.45
f4/f 1.72
ImgH/f 2.01
ΣT/TTL 0.36
f1/f -3.92
CT3/CT6 0.59
CT5/CT6 0.34
DT31/DT62 0.97
其中：CT3为第三透镜在光轴上的中心厚度；CT5为第三透镜在光轴上的中心厚度；CT6为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.7398 0.7496 1.80/46.6  
S2 球面 2.3937 1.8444    
S3 非球面 325.7795 0.6389 1.54/56.1 0.0000
S4 非球面 1.3740 0.7516   0.0000
S5 球面 74.4650 0.6930 1.85/23.8  
S6 球面 -4.7566 0.6670    
STO 球面 无穷 -0.0133    
S7 非球面 2.1195 0.8275 1.58/59.5 0.0000
S8 非球面 -2.2723 0.1000   0.0000
S9 非球面 -18.0518 0.4000 1.76/26.6 0.0000
S10 非球面 2.5387 0.1460   0.0000
S11 非球面 2.7889 1.1841 1.58/59.5 0.0000
S12 非球面 -1.7512 0.1438   0.0000
S13 非球面 -1.9998 0.4000 1.64/23.5 0.0000
S14 非球面 -6.9016 0.2573   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 1.0000    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 3.3498E-03 -1.6339E-03 1.7581E-04 -2.1854E-06 1.2144E-18
S4 1.2573E-02 1.3130E-04 1.3540E-02 -1.1539E-02 -1.5106E-13
S7 -1.2836E-02 -3.4278E-02 7.3733E-02 -1.9114E-01 1.9368E-24
S8 -2.3725E-02 -8.0990E-02 5.4079E-02 -1.1062E-01 0.0000E+00
S9 -3.4623E-02 -6.4064E-02 -1.7182E-02 -2.2183E-02 -9.0495E-25
S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S11 -6.0193E-02 2.7373E-02 -1.0256E-02 9.5676E-04 0.0000E+00
S12 -3.3028E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S13 -5.5439E-02 -8.0660E-03 6.7395E-03 -7.6196E-03 -1.3645E-22
S14 1.4157E-03 2.0896E-03 -3.0074E-03 3.1169E-04 0.0000E+00
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图6、7、8，并且在实现小型化的同时保持了良好的工艺性。
实施例三：
本实施例所述的七片式广角镜头，参见附图9，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有负屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有负屈折力的第五透镜L5、具有正屈折力且其像侧面为凸面的第六透镜L6、具有负屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。
本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -5.18
第二透镜的有效焦距：f2(mm) -3.33
第三透镜的有效焦距：f3(mm) -42.35
第四透镜的有效焦距：f4(mm) 2.05
第五透镜的有效焦距：f5(mm) -4.00
第六透镜的有效焦距：f6(mm) 2.07
第七透镜的有效焦距：f7(mm) -3.12
七片式广角镜头的有效焦距：f(mm) 1.29
光阑值：Fno 2.39
半视场角：HFOV(°) 100
CT3/TTL 0.15
f6/f7 -0.66
f4/f 1.58
ImgH/f 1.75
ΣT/TTL 0.28
f1/f -4.00
CT3/CT6 1.13
CT5/CT6 0.31
DT31/DT62 0.76
其中：CT3为第三透镜在光轴上的中心厚度；CT5为第三透镜在光轴上的中心厚度；CT6为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的详细设计信息见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.1877 0.5477 1.75/52.2  
S2 球面 2.4579 1.4416    
S3 非球面 6.2242 0.4400 1.54/56.1 0.0000
S4 非球面 1.3724 0.8356   0.0000
S5 非球面 -4526.7170 1.4692 1.85/23.8 0.0000
S6 非球面 36.5086 0.1376   0.0000
STO 球面 无穷 0.0773    
S7 非球面 2.1734 0.7760 1.54/56.1 0.0000
S8 非球面 -2.0235 0.1215   0.0000
S9 非球面 -3.8386 0.4000 1.64/23.5 0.0000
S10 非球面 8.2626 0.1000   0.0000
S11 非球面 1.8782 1.2998 1.54/56.1 0.0000
S12 非球面 -2.1562 0.0500   0.0000
S13 非球面 -51.1045 0.8553 1.64/23.5 0.0000
S14 非球面 2.1108 0.4385   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.8000    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 5.9459E-03 -1.9830E-03 2.3054E-04 1.9966E-05 2.4050E-16
S4 1.2939E-03 -4.7992E-03 5.3615E-03 -5.0197E-03 -5.3010E-14
S5 -2.7051E-02 -3.0879E-03 -4.2328E-03 -1.2598E-03 0.0000E+00
S6 -3.5506E-02 3.3726E-02 -1.3073E-02 1.9071E-02 8.5823E-24
S7 -8.4275E-02 -5.5939E-02 1.0701E-01 -2.2955E-01 -4.7756E-23
S8 -7.6869E-02 -6.3484E-02 4.6442E-02 -8.2910E-02 0.0000E+00
S9 -7.6679E-03 1.3607E-02 -1.3119E-01 9.7450E-02 2.4022E-23
S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S11 -8.7888E-02 3.1403E-02 -1.3282E-02 7.9855E-04 0.0000E+00
S12 -2.4158E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S13 -1.4004E-01 -9.8316E-03 4.1456E-03 8.3872E-04 9.2110E-22
S14 -1.0259E-01 1.6743E-02 -1.7116E-03 -2.0611E-04 0.0000E+00
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图10、11、12，并且在实现小型化的同时保持了良好的工艺性。
实施例四：
本实施例所述的七片式广角镜头，参见附图13，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有负屈折力的第五透镜L5、具有正屈折力且其像侧面为凸面的第六透镜L6、具有负屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -5.04
第二透镜的有效焦距：f2(mm) -2.72
第三透镜的有效焦距：f3(mm) 3.32
第四透镜的有效焦距：f4(mm) 2.34
第五透镜的有效焦距：f5(mm) -2.28
第六透镜的有效焦距：f6(mm) 2.17
第七透镜的有效焦距：f7(mm) -5.33
七片式广角镜头的有效焦距：f(mm) 1.26
光阑值：Fno 2.39
半视场角：HFOV(°) 106
CT3/TTL 0.11
f6/f7 -0.41
f4/f 1.86
ImgH/f 1.87
ΣT/TTL 0.35
f1/f -4.00
CT3/CT6 0.82
CT5/CT6 0.30
DT31/DT62 0.91
其中：CT3为第三透镜在光轴上的中心厚度；CT5为第三透镜在光轴上的中心厚度；CT6为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.4133 0.5000 1.80/46.6  
S2 球面 2.5486 1.9883    
S3 非球面 -66.3631 0.4400 1.54/56.1 0.0000
S4 非球面 1.5224 0.7111   0.0000
S5 球面 4.2737 1.0821 1.85/23.9  
S6 球面 -7.4348 0.3660    
STO 球面 无穷 0.0563    
S7 非球面 -89.2166 0.6266 1.54/56.1 0.0000
S8 非球面 -1.2641 0.1000   0.0000
S9 非球面 -1.8085 0.4000 1.64/23.5 0.0000
S10 非球面 8.6418 0.1000   0.0000
S11 非球面 2.0866 1.3195 1.54/56.1 0.0000
S12 非球面 -2.1348 0.0499   0.0000
S13 非球面 7.3936 0.9772 1.64/23.5 0.0000
S14 非球面 2.2263 0.2731   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.9092    
S17 球面 无穷      
本实施例所述七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 3.2384E-03 -1.3345E-03 1.7949E-04 -6.1340E-06 8.6705E-18
S4 7.2190E-03 9.3709E-04 -4.2919E-04 -2.6293E-03 -5.2948E-14
S7 -1.4513E-01 -1.6804E-01 6.2345E-03 -7.1337E-01 -4.7505E-23
S8 -9.9961E-02 -1.9314E-02 5.1339E-02 -2.6522E-01 0.0000E+00
S9 4.0898E-02 6.0881E-02 -1.0156E-01 8.2034E-02 2.8852E-23
S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S11 -8.4362E-02 3.2868E-02 -1.3103E-02 1.7815E-03 0.0000E+00
S12 -1.0861E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S13 -1.0453E-01 -5.6248E-03 2.5209E-03 -6.8244E-04 1.7579E-21
S14 -9.4734E-02 1.3421E-02 -9.6743E-04 -1.6336E-04 0.0000E+00
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图14、15、16，并且在实现小型化的同时保持了良好的工艺性。
实施例五：
本实施例所述的七片式广角镜头，参见附图17，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有负屈折力的第五透镜L5、具有正屈折力且其像侧面为凸面的第六透镜L6、具有负屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有像侧面S9，其物侧面与第四透镜L4的像侧面S8相互重合，第六透镜L6具有物侧面S10和像侧面S11，第七透镜L7具有物侧面S12和像侧面S13，滤光片L8具有物侧面S14和像侧面S15。本实施例所述的七片式广角镜头成像面S16位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -4.85
第二透镜的有效焦距：f2(mm) -2.73
第三透镜的有效焦距：f3(mm) 3.62
第四透镜的有效焦距：f4(mm) 1.92
第五透镜的有效焦距：f5(mm) -2.16
第六透镜的有效焦距：f6(mm) 2.35
第七透镜的有效焦距：f7(mm) -6.87
七片式广角镜头的有效焦距：f(mm) 1.24
光阑值：Fno 2.34
半视场角：HFOV(°) 105
CT3/TTL 0.11
f6/f7 -0.34
f4/f 1.55
ImgH/f 1.88
ΣT/TTL 0.38
f1/f -3.90
CT3/CT6 1.25
CT5/CT6 0.45
DT31/DT62 1.05
其中：CT3为第三透镜在光轴上的中心厚度；CT5为第三透镜在光轴上的中心厚度；CT6为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 8.0858 0.5000 1.80/46.6  
S2 球面 2.5655 2.0328    
S3 非球面 -24.6059 0.4400 1.54/56.1 0.0000
S4 非球面 1.5969 0.7908   0.0000
S5 球面 3.0522 1.1142 1.85/23.8  
S6 球面 181.5000 0.5649    
STO 球面 无穷 -0.0227    
S7 球面 2.3422 0.7088 1.60/61.6  
S8 球面 -2.0000 0.0000    
S9 球面 -2.0000 0.4000 1.84/24.0  
S10 球面 24.8032 0.2115    
S11 球面 3.8136 0.8921 1.76/52.3  
S12 球面 -3.0114 0.2180    
S13 非球面 5.1603 0.7397 1.64/23.5 0.0000
S14 非球面 2.2522 0.3998   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.8000    
S17 球面 无穷      
本实施例所述七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 5.6683E-03 -1.5309E-03 1.6966E-04 -4.5584E-06 9.0560E-18
S4 3.5779E-03 -8.6993E-03 3.8704E-03 -2.1274E-03 -5.2948E-14
S13 -1.2194E-01 -5.4918E-03 -9.2776E-03 -1.2780E-03 5.1226E-19
S14 -9.3596E-02 9.1440E-03 -8.0708E-04 -1.2632E-04 0.0000E+00
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图18、19、20，并且在实现小型化的同时保持了良好的工艺性。
实施例六：
本实施例所述的七片式广角镜头，参见附图21，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有负屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有负屈折力的第五透镜L5、具有正屈折力且其像侧面为凸面的第六透镜L6、具有负屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -4.97
第二透镜的有效焦距：f2(mm) -2.87
第三透镜的有效焦距：f3(mm) -14.51
第四透镜的有效焦距：f4(mm) 2.05
第五透镜的有效焦距：f5(mm) -5.79
第六透镜的有效焦距：f6(mm) 2.02
第七透镜的有效焦距：f7(mm) -3.09
七片式广角镜头的有效焦距：f(mm) 1.24
光阑值：Fno 2.39
半视场角：HFOV(°) 105
CT3/TTL 0.17
f6/f7 -0.66
f4/f 1.65
ImgH/f 1.88
ΣT/TTL 0.31
f1/f -4.00
CT3/CT6 1.17
CT5/CT6 0.30
DT31/DT62 0.73
其中：CT3为第三透镜在光轴上的中心厚度；CT5为第三透镜在光轴上的中心厚度；CT6为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.3024 0.7255 1.76/52.3  
S2 球面 2.3790 1.4065    
S3 非球面 8.0104 0.4400 1.54/56.1 0.0000
S4 非球面 1.2873 0.7969   0.0000
S5 非球面 1000.0000 1.5795 1.85/23.8 0.0000
S6 非球面 12.2425 0.0362   0.0000
STO 球面 无穷 0.0322    
S7 非球面 2.1721 0.7747 1.54/56.1 0.0000
S8 非球面 -2.0226 0.1356   0.0000
S9 非球面 200.0000 0.4000 1.64/23.5 0.0000
S10 非球面 3.6663 0.1000   0.0000
S11 非球面 1.8756 1.3490 1.54/56.1 0.0000
S12 非球面 -2.0084 0.0500   0.0000
S13 非球面 -27.2528 0.6008 1.64/23.5 0.0000
S14 非球面 2.1702 0.5630   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.8000    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 1.9718E-02 -4.7557E-03 2.4471E-04 6.7835E-05 2.4051E-16
S4 2.6184E-02 -2.2751E-02 4.8305E-02 -2.8253E-02 -5.3010E-14
S5 -3.2018E-02 5.4124E-03 -1.9117E-02 -1.7033E-03 0.0000E+00
S6 -3.5866E-02 6.7704E-02 -3.9518E-02 2.8905E-02 7.2755E-24
S7 -9.5220E-02 2.4357E-02 5.1942E-02 -1.9906E-01 -4.7184E-23
S8 -7.7324E-02 -2.0703E-02 3.4555E-02 -1.0062E-01 0.0000E+00
S9 -2.3345E-02 2.0686E-02 -8.3848E-02 2.9155E-02 2.2787E-23
S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S11 -8.4041E-02 2.8438E-02 -1.3661E-02 1.3437E-03 0.0000E+00
S12 -2.6738E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S13 -1.5103E-01 -5.8068E-03 3.5596E-03 2.3178E-03 9.4922E-22
S14 -1.0788E-01 1.9242E-02 -2.3253E-03 -5.4180E-05 0.0000E+00
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图22、23、24，并且在实现小型化的同时保持了良好的工艺性。
实施例七：
本实施例所述的七片式广角镜头，参见附图25，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有负屈折力的第五透镜L5、具有正屈折力且其像侧面为凸面的第六透镜L6、具有负屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -5.00
第二透镜的有效焦距：f2(mm) -2.68
第三透镜的有效焦距：f3(mm) 4.10
第四透镜的有效焦距：f4(mm) 1.98
第五透镜的有效焦距：f5(mm) -2.71
第六透镜的有效焦距：f6(mm) 2.42
第七透镜的有效焦距：f7(mm) -4.75
七片式广角镜头的有效焦距：f(mm) 1.25
光阑值：Fno 2.39
半视场角：HFOV(°) 105
CT3/TTL 0.11
f6/f7 -0.51
f4/f 1.58
ImgH/f 1.87
ΣT/TTL 0.38
f1/f -4.00
CT3/CT6 0.91
CT5/CT6 0.35
DT31/DT62 0.96
其中：CT3为第三透镜在光轴上的中心厚度；CT5为第三透镜在光轴上的中心厚度；CT6为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.7187 0.5555 1.80/46.6  
S2 球面 2.5656 2.0209    
S3 非球面 -32.8422 0.4400 1.54/56.1 0.0000
S4 非球面 1.5405 0.6571   0.0000
S5 球面 3.9765 1.0527 1.85/23.8  
S6 球面 -25.7928 0.4793    
STO 球面 无穷 0.0173    
S7 非球面 4.0103 0.8086 1.54/56.1 0.0000
S8 非球面 -1.3732 0.1000   0.0000
S9 非球面 -1.5977 0.4000 1.64/23.5 0.0000
S10 非球面 -20.0000 0.1572   0.0000
S11 非球面 2.1763 1.1560 1.54/56.1 0.0000
S12 非球面 -2.7297 0.0500   0.0000
S13 非球面 8.2065 0.8159 1.64/23.5 0.0000
S14 非球面 2.1479 0.2797   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.8000    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 3.0049E-03 -1.1360E-03 1.9812E-04 -9.6674E-06 8.4782E-18
S4 -1.3006E-03 -7.6531E-04 -1.4340E-03 -1.2022E-03 -5.2948E-14
S7 -8.9491E-02 -1.0382E-01 -1.3040E-02 -4.8211E-01 -4.7684E-23
S8 -1.0119E-01 -4.0296E-02 4.8635E-02 -1.5333E-01 0.0000E+00
S9 1.5570E-02 2.4858E-02 -1.0238E-01 1.1975E-01 2.2580E-23
S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S11 -7.1452E-02 3.2393E-02 -1.3411E-02 2.2651E-03 0.0000E+00
S12 -1.2942E-02 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S13 -1.2199E-01 -7.2368E-03 2.3782E-03 -1.1757E-03 1.4766E-21
S14 -9.7637E-02 1.3528E-02 -1.3221E-03 -1.4219E-04 0.0000E+00
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图26、27、28，并且在实现小型化的同时保持了良好的工艺性。
实施例八：
本实施例所述的七片式广角镜头，参见附图29，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有负屈折力的第五透镜L5、具有正屈折力且其像侧面为凸面的第六透镜L6、具有负屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -4.89
第二透镜的有效焦距：f2(mm) -2.65
第三透镜的有效焦距：f3(mm) 3.43
第四透镜的有效焦距：f4(mm) 1.85
第五透镜的有效焦距：f5(mm) -3.30
第六透镜的有效焦距：f6(mm) 3.12
第七透镜的有效焦距：f7(mm) -5.54
七片式广角镜头的有效焦距：f(mm) 1.22
光阑值：Fno 2.4
半视场角：HFOV(°) 106
CT3/TTL 0.11
f6/f7 -0.56
f4/f 1.51
ImgH/f 1.92
ΣT/TTL 0.35
f1/f -4.00
CT3/CT6 1.27
CT5/CT6 0.45
DT31/DT62 1.07
其中：CT3为第三透镜在光轴上的中心厚度；CT5为第三透镜在光轴上的中心厚度；CT6为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 8.0856 0.5481 1.80/46.6  
S2 球面 2.5728 2.1023    
S3 非球面 -17.8121 0.4400 1.54/56.1 0.0000
S4 非球面 1.5916 0.6418   0.0000
S5 球面 3.6723 1.1318 1.85/23.8  
S6 球面 -12.4873 0.4987    
STO 球面 无穷 0.0546    
S7 非球面 3.7451 0.8597 1.54/56.1 0.0000
S8 非球面 -1.2726 0.1000   0.0000
S9 非球面 -1.4185 0.4000 1.64/23.5 0.0000
S10 非球面 -4.7185 0.1000   0.0000
S11 非球面 -107.8296 0.8932 1.54/56.1 0.0000
S12 非球面 -1.6835 0.0499   0.0000
S13 非球面 5.9318 0.7773 1.64/23.5 0.0000
S14 非球面 2.1176 0.3926   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.8000    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 3.0390E-03 -1.2431E-03 1.9409E-04 -7.1175E-06 9.0692E-18
S4 -1.7968E-04 -3.3271E-03 -2.6961E-04 -1.1825E-03 -5.2948E-14
S7 -6.1063E-02 -9.0855E-02 -9.7610E-02 -2.4994E-01 -4.7170E-23
S8 -6.4202E-02 -5.8217E-02 6.5749E-02 -1.3184E-01 0.0000E+00
S9 -1.7266E-02 1.5343E-02 -1.0030E-01 1.4215E-01 2.7912E-23
S10 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S11 -6.6781E-02 2.4527E-02 -1.4663E-02 -5.5175E-04 0.0000E+00
S12 7.7250E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S13 -7.4233E-02 -5.8913E-03 4.2335E-04 -2.9113E-03 1.0679E-21
S14 -8.3651E-02 6.3305E-03 -1.0773E-03 -6.3040E-05 0.0000E+00
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图30、31、32，并且在实现小型化的同时保持了良好的工艺性。
实施例九：
本实施例所述的七片式广角镜头，参见附图33，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第七透镜L7、滤光片L8。
其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -5.91
第二透镜的有效焦距：f2(mm) -2.48
第三透镜的有效焦距：f3(mm) 3.29
第四透镜的有效焦距：f4(mm) 3.34
第五透镜的有效焦距：f5(mm) 2.36
第六透镜的有效焦距：f6(mm) -1.81
第七透镜的有效焦距：f7(mm) 4.64
七片式广角镜头的有效焦距：f(mm) 1.12
光阑值：Fno 2.40
透镜总长：TTL(mm) 10.00
CT3/TTL 0.14
f6/f7 -0.39
f4/f 2.99
ImgH/f 2.38
ΣT/TTL 0.34
f3/f5 1.40
f5/f7 0.51
R10/R11 1.03
DT62/DT72 0.80
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 8.3128 0.6603 1.74/44.9  
S2 球面 2.7874 1.7142    
S3 非球面 2.2734 0.4400 1.54/56.1 -0.2974
S4 非球面 0.7903 1.0658   -1.1561
S5 球面 3.6600 1.4040 1.75/35.0  
S6 球面 -6.4358 0.1498    
STO 球面 无穷 0.1092    
S7 非球面 -2.3649 0.6881 1.54/56.1 0.0000
S8 非球面 -1.1356 0.1000   0.0000
S9 非球面 7.0469 1.2227 1.54/56.1 0.0000
S10 非球面 -1.4798 0.1000   0.0000
S11 非球面 -1.4320 0.4000 1.64/23.5 0.0000
S12 非球面 7.0853 0.1398   0.0000
S13 非球面 2.9064 0.6260 1.54/56.1 -18.3367
S14 非球面 -18.3293 0.2701   74.6710
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.7000    
S17 球面 无穷      
本实施例所述七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12)见下表：
面号 A4 A6 A8 A10 A12
S3 -6.7620E-02 1.5971E-02 -3.9442E-03 5.3481E-04 -3.1695E-05
S4 7.5760E-03 2.3503E-02 7.5363E-03 -6.8129E-03 5.8302E-04
S7 -1.6811E-01 -1.6025E-02 -2.8197E-01 6.9850E-02 -3.2871E-22
S8 2.6558E-02 -4.3933E-02 1.1511E-01 -1.2492E-01 5.9505E-19
S9 1.9377E-02 9.7643E-03 -7.8186E-03 -1.3337E-03 -6.5841E-17
S10 -2.5439E-02 2.2025E-02 7.6293E-03 8.3725E-04 2.0200E-16
S11 2.2499E-02 -1.3528E-02 -1.3558E-03 1.2830E-02 -9.6904E-17
S12 -1.1608E-02 3.8318E-03 -8.3965E-06 -1.0693E-05 1.9974E-16
S13 5.2863E-02 -4.3188E-02 1.4798E-02 -2.0487E-03 0.0000E+00
S14 1.1931E-01 -6.7674E-02 1.8374E-02 -2.3403E-03 7.6551E-05
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图34、35、36，并且在实现小型化的同时保持了良好的工艺性。
实施例十：
本实施例所述的七片式广角镜头，参见附图37，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -3.55
第二透镜的有效焦距：f2(mm) -3.71
第三透镜的有效焦距：f3(mm) 8.28
第四透镜的有效焦距：f4(mm) 3.23
第五透镜的有效焦距：f5(mm) 2.44
第六透镜的有效焦距：f6(mm) -1.92
第七透镜的有效焦距：f7(mm) 6.34
七片式广角镜头的有效焦距：f(mm) 1.59
光阑值：Fno 2.46
透镜总长：TTL(mm) 10.00
CT3/TTL 0.14
f6/f7 -0.30
f4/f 2.04
ImgH/f 1.59
ΣT/TTL 0.29
f3/f5 3.39
f5/f7 0.39
R10/R11 1.10
DT62/DT72 0.80
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.0334 0.5389 1.74/44.9  
S2 球面 1.8629 1.5925    
S3 非球面 -8.3826 0.4400 1.54/56.1 0.0000
S4 非球面 2.7258 0.4210   0.0000
S5 非球面 10.6799 1.4232 1.64/23.5 0.0000
S6 非球面 -10.1584 0.5339   0.0000
STO 球面 无穷 -0.1382    
S7 非球面 2.6445 0.6669 1.54/56.1 0.0000
S8 非球面 -4.8352 0.1000   0.0000
S9 非球面 3.2307 0.8774 1.54/56.1 0.0000
S10 非球面 -2.0546 0.1000   0.0000
S11 非球面 -1.8732 0.4000 1.64/23.5 0.0000
S12 非球面 3.9739 0.3179   0.0000
S13 非球面 3.3194 0.5623 1.54/56.1 0.0000
S14 非球面 75.3681 1.3166   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.6377    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10)见下表：
面号 A4 A6 A8 A10
S3 -3.2310E-03 6.7050E-04 5.6128E-04 -1.0205E-04
S4 8.1266E-03 1.6524E-03 1.5293E-03 1.7494E-03
S5 -1.6308E-02 -3.2047E-03 6.5798E-04 1.6009E-04
S6 7.4877E-03 -4.9545E-03 2.0142E-03 4.4028E-04
S7 2.5047E-02 4.4976E-04 -1.1755E-02 5.5838E-03
S8 -3.2674E-04 -2.3904E-03 -6.9246E-03 9.9518E-03
S9 -2.4581E-02 -2.1744E-02 -8.0887E-03 -9.1766E-05
S10 -2.6005E-02 -6.6461E-03 -2.0606E-03 -1.9304E-03
S11 5.0904E-03 -3.2212E-03 2.1726E-03 -5.0147E-03
S12 2.1067E-02 1.1499E-02 -5.4900E-03 0.0000E+00
S13 -6.1612E-02 4.9848E-03 -7.7106E-03 7.1547E-05
S14 -1.2602E-02 -1.0542E-02 -3.5015E-04 -4.0461E-04
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图38、39、40，并且在实现小型化的同时保持了良好的工艺性。
实施例十一：
本实施例所述的七片式广角镜头，参见附图41，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -4.40
第二透镜的有效焦距：f2(mm) -2.76
第三透镜的有效焦距：f3(mm) 3.59
第四透镜的有效焦距：f4(mm) 2.83
第五透镜的有效焦距：f5(mm) 2.73
第六透镜的有效焦距：f6(mm) -2.02
第七透镜的有效焦距：f7(mm) 8.51
七片式广角镜头的有效焦距：f(mm) 1.41
光阑值：Fno 2.44
透镜总长：TTL(mm) 9.99
CT3/TTL 0.08
f6/f7 -0.24
f4/f 2.01
ImgH/f 1.77
ΣT/TTL 0.41
f3/f5 1.32
f5/f7 0.32
R10/R11 0.86
DT62/DT72 0.64
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.7395 0.5000 1.74/44.9  
S2 球面 2.2449 1.7918    
S3 球面 -30.6854 0.4400 1.54/56.1  
S4 球面 1.5947 0.7317    
S5 球面 3.0784 0.8419 1.75/35.0  
S6 球面 -20.1321 0.8462    
STO 球面 无穷 0.0251    
S7 非球面 10.6288 0.8004 1.54/56.1 0.0000
S8 球面 -1.7628 0.1000    
S9 球面 10.8762 0.8671 1.54/56.1  
S10 球面 -1.6800 0.1000    
S11 球面 -1.9557 0.4000 1.64/23.5  
S12 非球面 4.2111 0.5390   0.0000
S13 非球面 5.2318 0.8549 1.54/56.1 0.0000
S14 非球面 -39.4210 0.3142   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.6321    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8)见下表：
面号 A4 A6 A8
S7 -6.2438E-02 -2.3620E-02 -1.2223E-02
S12 4.3798E-03 2.7128E-03 5.6002E-04
S13 -1.1203E-02 3.2711E-03 -2.4002E-03
S14 1.6118E-02 -5.0458E-04 -1.0949E-03
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图42、43、44，并且在实现小型化的同时保持了良好的工艺性。
实施例十二：
本实施例所述的七片式广角镜头，参见附图45，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -3.84
第二透镜的有效焦距：f2(mm) -3.45
第三透镜的有效焦距：f3(mm) 5.88
第四透镜的有效焦距：f4(mm) 3.16
第五透镜的有效焦距：f5(mm) 2.31
第六透镜的有效焦距：f6(mm) -1.84
第七透镜的有效焦距：f7(mm) 7.04
七片式广角镜头的有效焦距：f(mm) 1.58
光阑值：Fno 2.45
透镜总长：TTL(mm) 10.00
CT3/TTL 0.15
f6/f7 -0.26
f4/f 2.00
ImgH/f 1.58
ΣT/TTL 0.32
f3/f5 2.55
f5/f7 0.33
R10/R11 1.03
DT62/DT72 0.78
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜 至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.0015 0.5000 1.74/44.9  
S2 球面 1.9743 1.6738    
S3 非球面 -16.4484 0.4400 1.54/56.1 0.0000
S4 非球面 2.1492 0.7120   0.0000
S5 球面 4.3613 1.4956 1.75/35.0  
S6 球面 218.4463 0.4066    
STO 球面 无穷 -0.1240    
S7 非球面 2.2828 0.6194 1.54/56.1 0.0000
S8 非球面 -6.4408 0.1251   0.0000
S9 非球面 4.3134 0.8872 1.54/56.1 0.0000
S10 非球面 -1.6510 0.1000   0.0000
S11 非球面 -1.6057 0.4000 1.64/23.5 0.0000
S12 非球面 5.0209 0.2660   0.0000
S13 非球面 2.4815 0.5181 1.54/56.1 0.0000
S14 非球面 6.4762 1.1325   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.6377    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10)见下表：
面号 A4 A6 A8 A10
S3 -1.0536E-02 8.5609E-06 6.8585E-04 -8.1087E-05
S4 9.0689E-03 8.7556E-04 1.0958E-04 1.6573E-03
S7 -5.7540E-04 6.6430E-03 -1.2320E-02 -2.5646E-03
S8 1.2046E-03 -4.2520E-03 -3.2357E-03 9.0518E-03
S9 -1.6496E-02 -1.9011E-02 -6.3217E-03 4.0628E-03
S10 -1.0257E-02 -4.9647E-04 -2.3706E-03 -1.5693E-03
S11 2.3555E-03 -1.6647E-03 3.0750E-03 -3.3691E-03
S12 8.1795E-03 6.1633E-03 -3.0578E-04 0.0000E+00
S13 -7.7191E-02 9.9319E-03 -8.5441E-03 -2.2600E-03
S14 -1.8931E-02 -7.4614E-03 -2.6929E-03 -2.4927E-04
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图46、47、48，并且在实现小型化的同时保持了良好的工艺性。
实施例十三：
本实施例所述的七片式广角镜头，参见附图49，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第 七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -3.70
第二透镜的有效焦距：f2(mm) -4.55
第三透镜的有效焦距：f3(mm) 6.81
第四透镜的有效焦距：f4(mm) 3.26
第五透镜的有效焦距：f5(mm) 2.57
第六透镜的有效焦距：f6(mm) -1.82
第七透镜的有效焦距：f7(mm) 6.88
七片式广角镜头的有效焦距：f(mm) 1.63
光阑值：Fno 2.45
透镜总长：TTL(mm) 10.00
CT3/TTL 0.11
f6/f7 -0.26
f4/f 2.00
ImgH/f 1.53
ΣT/TTL 0.33
f3/f5 2.66
f5/f7 0.37
R10/R11 1.03
DT62/DT72 0.84
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.0467 0.5000 1.74/44.9  
S2 球面 1.9249 1.6465    
S3 非球面 -10.9503 0.4400 1.54/56.1 0.0000
S4 非球面 3.2631 0.5110   0.0000
S5 球面 -203.1182 1.1275 1.75/35.0  
S6 球面 -5.0264 0.7571    
STO 球面 无穷 -0.0943    
S7 非球面 3.3772 0.6969 1.54/56.1 0.0000
S8 非球面 -3.4999 0.1000   0.0000
S9 非球面 4.6282 0.9720 1.54/56.1 0.0000
S10 非球面 -1.8619 0.1000   0.0000
S11 非球面 -1.8067 0.4000 1.64/23.5 0.0000
S12 非球面 3.6668 0.2999   0.0000
S13 非球面 3.7290 0.5516 1.54/56.1 0.0000
S14 非球面 419.0651 1.1439   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.6377    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10)见下表：
面号 A4 A6 A8 A10
S3 -6.7408E-03 1.1328E-04 5.4444E-04 -7.2745E-05
S4 3.0034E-02 7.2145E-03 7.3933E-04 1.2242E-03
S7 -4.7566E-03 1.3704E-03 -1.1832E-02 2.4540E-03
S8 -5.6991E-03 -4.9868E-03 -3.6362E-03 5.3244E-03
S9 -7.4237E-03 -1.2698E-02 -4.1095E-03 2.8609E-03
S10 -1.1569E-02 -1.2854E-03 -1.9444E-04 4.2217E-04
S11 2.3552E-03 1.1717E-03 4.2384E-03 -4.1114E-04
S12 1.3753E-02 5.6347E-03 -1.3478E-03 0.0000E+00
S13 -5.9632E-02 8.3522E-03 -7.0654E-03 -4.6793E-04
S14 -3.0048E-02 -2.3056E-04 -2.5514E-03 -2.7768E-04
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图50、51、52，并且在实现小型化的同时保持了良好的工艺性。
实施例十四：
本实施例所述的七片式广角镜头，参见附图53，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -3.61
第二透镜的有效焦距：f2(mm) -3.35
第三透镜的有效焦距：f3(mm) 4.97
第四透镜的有效焦距：f4(mm) 4.69
第五透镜的有效焦距：f5(mm) 2.11
第六透镜的有效焦距：f6(mm) -1.89
第七透镜的有效焦距：f7(mm) 6.67
七片式广角镜头的有效焦距：f(mm) 1.59
光阑值：Fno 2.45
透镜总长：TTL(mm) 10.00
CT3/TTL 0.13
f6/f7 -0.28
f4/f 2.96
ImgH/f 1.53
ΣT/TTL 0.32
f3/f5 2.36
f5/f7 0.32
R10/R11 1.06
DT62/DT72 0.83
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.4380 0.5000 1.74/44.9  
S2 球面 1.9239 1.7157    
S3 非球面 -7.8910 0.4400 1.54/56.1 0.0000
S4 非球面 2.4307 0.4214   0.0000
S5 非球面 6.5298 1.3214 1.75/35.0 0.0000
S6 球面 -8.0407 0.7511    
STO 球面 无穷 -0.1597    
S7 非球面 2.5339 0.5904 1.54/56.1 0.0000
S8 非球面 205.0379 0.1000   0.0000
S9 非球面 2.4945 1.0029 1.54/56.1 0.0000
S10 非球面 -1.8324 0.1000   0.0000
S11 非球面 -1.7246 0.4000 1.64/23.5 0.0000
S12 非球面 4.5670 0.2553   0.0000
S13 非球面 3.1991 0.5160 1.54/56.1 0.0000
S14 非球面 24.7231 1.1979   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.6377    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10)见下表：
面号 A4 A6 A8 A10
S3 -8.9820E-03 6.1594E-05 6.6791E-04 -8.0240E-05
S4 7.5706E-03 1.4394E-03 2.0050E-03 8.0442E-04
S5 -3.7575E-03 1.1285E-03 9.3146E-04 2.1554E-05
S7 2.4894E-02 3.5378E-03 -1.3547E-02 5.1683E-03
S8 -2.8944E-03 -8.7263E-03 -2.8351E-03 1.1471E-02
S9 -3.0514E-02 -1.8229E-02 -7.6565E-03 5.9484E-04
S10 -1.7766E-02 -5.2816E-03 -2.7689E-03 -5.2916E-04
S11 -2.3304E-03 -3.7322E-03 3.5328E-03 -2.8656E-03
S12 2.3312E-02 1.0809E-02 -5.2253E-03 0.0000E+00
S13 -6.7576E-02 3.1849E-03 -8.2235E-03 -1.5823E-03
S14 -2.0066E-02 -1.0001E-02 -1.9574E-03 -4.2839E-04
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图54、55、56，并且在实现小型化的同时保持了良好的工艺性。
实施例十五：
本实施例所述的七片式广角镜头，参见附图57，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -3.62
第二透镜的有效焦距：f2(mm) -4.17
第三透镜的有效焦距：f3(mm) 4.34
第四透镜的有效焦距：f4(mm) 3.30
第五透镜的有效焦距：f5(mm) 3.06
第六透镜的有效焦距：f6(mm) -1.92
第七透镜的有效焦距：f7(mm) 5.80
七片式广角镜头的有效焦距：f(mm) 1.65
光阑值：Fno 2.45
透镜总长：TTL(mm) 10.00
CT3/TTL 0.14
f6/f7 -0.33
f4/f 2.00
ImgH/f 1.52
ΣT/TTL 0.31
f3/f5 1.42
f5/f7 0.53
R10/R11 0.99
DT62/DT72 0.81
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 6.9329 0.5000 1.74/44.9  
S2 球面 1.8859 1.6177    
S3 非球面 -10.8213 0.4400 1.54/56.1 0.0000
S4 非球面 2.9299 0.4919   0.0000
S5 球面 33.2084 1.3585 1.75/35.0  
S6 球面 -3.5727 0.5383    
STO 球面 无穷 -0.0726    
S7 非球面 3.5672 0.6637 1.54/56.1 0.0000
S8 非球面 -3.3985 0.1000   0.0000
S9 非球面 -229.2674 0.8680 1.54/56.1 0.0000
S10 非球面 -1.6603 0.1000   0.0000
S11 非球面 -1.6715 0.4000 1.64/23.5 0.0000
S12 非球面 5.2744 0.2844   0.0000
S13 非球面 3.0100 0.6158 1.54/56.1 0.0000
S14 非球面 55.1328 1.2464   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.6377    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10)见下表：
面号 A4 A6 A8 A10
S1 -7.6617E-03 -1.0010E-04 6.3148E-04 -7.2145E-05
S2 3.3731E-02 8.0195E-03 1.2328E-03 7.6222E-04
S3 -1.4733E-02 2.8688E-03 -1.3024E-02 3.0761E-03
S4 -1.1862E-02 -4.0081E-03 -7.7380E-04 9.2530E-03
S5 -2.3188E-03 -1.6357E-02 -5.5920E-03 5.7713E-03
S6 -1.2326E-02 -3.9672E-04 3.9918E-04 1.0240E-04
S7 7.8953E-03 3.8740E-03 5.5416E-03 9.0095E-04
S8 1.2844E-02 6.3383E-03 -8.3383E-04 0.0000E+00
S9 -6.4809E-02 1.0629E-02 -7.2705E-03 -1.0097E-03
S10 -2.6490E-02 -1.1984E-03 -2.3255E-03 -5.0556E-04
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图58、59、60，并且在实现小型化的同时保持了良好的工艺性。
实施例十六：
本实施例所述的七片式广角镜头，参见附图61，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9 和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -3.43
第二透镜的有效焦距：f2(mm) -3.73
第三透镜的有效焦距：f3(mm) 7.29
第四透镜的有效焦距：f4(mm) 3.13
第五透镜的有效焦距：f5(mm) 2.45
第六透镜的有效焦距：f6(mm) -1.83
第七透镜的有效焦距：f7(mm) 6.48
七片式广角镜头的有效焦距：f(mm) 1.57
光阑值：Fno 2.45
透镜总长：TTL(mm) 10.00
CT3/TTL 0.10
f6/f7 -0.28
f4/f 2.00
ImgH/f 1.60
ΣT/TTL 0.33
f3/f5 2.97
f5/f7 0.38
R10/R11 1.05
DT62/DT72 0.85
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 球面 7.4846 0.5000 1.74/44.9  
S2 球面 1.8572 1.5923    
S3 非球面 -7.6231 0.4400 1.54/56.1 0.0000
S4 非球面 2.8363 0.4573   0.0000
S5 非球面 12.3213 1.0267 1.64/23.5 0.0000
S6 非球面 -7.3680 0.8203   0.0000
STO 球面 无穷 -0.1368    
S7 非球面 3.4114 0.7104 1.54/56.1 0.0000
S8 非球面 -3.1833 0.1000   0.0000
S9 非球面 3.1497 0.8731 1.54/56.1 0.0000
S10 非球面 -2.1049 0.1000   0.0000
S11 非球面 -2.0014 0.4000 1.64/23.5 0.0000
S12 非球面 3.1012 0.3836   0.0000
S13 非球面 -209.4732 0.6035 1.54/56.1 0.0000
S14 非球面 -3.4834 1.2818   0.0000
S15 球面 无穷 0.2100 1.52/64.2  
S16 球面 无穷 0.6377    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10)见下表：
面号 A4 A6 A8 A10
S3 -4.5442E-04 6.5142E-04 4.4402E-04 -1.0332E-04
S4 5.5350E-03 1.1110E-03 8.4214E-04 1.4678E-03
S5 -2.0801E-02 -6.0236E-03 -2.5454E-04 3.7697E-05
S6 1.0650E-02 -5.5330E-03 1.3499E-03 4.2499E-04
S7 3.5157E-02 1.4636E-03 -1.1034E-02 6.8835E-03
S8 6.8506E-03 2.3705E-03 -6.2376E-03 9.1732E-03
S9 -2.9502E-02 -2.2143E-02 -8.6017E-03 5.5818E-04
S10 -1.6844E-02 -8.9080E-03 -1.9527E-03 -1.3756E-03
S11 2.7580E-04 3.8593E-03 2.3698E-03 -6.8156E-03
S12 2.4130E-02 8.6788E-03 -6.1237E-03 0.0000E+00
S13 -2.1774E-02 7.4492E-03 -4.9659E-03 3.1457E-03
S14 -3.7333E-03 -3.0994E-03 1.1492E-03 -4.1424E-04
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图62、63、64，并且在实现小型化的同时保持了良好的工艺性。
实施例十七：
本实施例所述的七片式广角镜头，参见附图65，沿光轴由物侧至像侧依次排列有：具有负屈折力的第一透镜L1、具有负屈折力的第二透镜L2、具有正屈折力的第三透镜L3、具有正屈折力的第四透镜L4、具有正屈折力且其像侧面为凸面的第五透镜L5、具有负屈折力且其物侧面和像侧面为凹面的第六透镜L6、具有正屈折力的第七透镜L7、滤光片L8。其中：第一透镜L1具有物侧面S1和像侧面S2，第二透镜L2具有物侧面S3和像侧面S4，第三透镜L3具有物侧面S5和像侧面S6，第四透镜L4具有物侧面S7和像侧面S8，第五透镜L5具有物侧面S9和像侧面S10，第六透镜L6具有物侧面S11和像侧面S12，第七透镜L7具有物侧面S13和像侧面S14，滤光片L8具有物侧面S15和像侧面S16。本实施例所述的七片式广角镜头成像面S17位于滤光片L8的像侧，可供安装感光元件。
本实施例所述的七片式广角镜头的主要设计参数见下表：
名称 数值
第一透镜的有效焦距：f1(mm) -4.93
第二透镜的有效焦距：f2(mm) -12.68
第三透镜的有效焦距：f3(mm) 7.54
第四透镜的有效焦距：f4(mm) 7.59
第五透镜的有效焦距：f5(mm) 4.88
第六透镜的有效焦距：f6(mm) -3.76
第七透镜的有效焦距：f7(mm) 8.52
七片式广角镜头的有效焦距：f(mm) 3.02
光阑值：Fno 2.50
透镜总长：TTL(mm) 21.01
CT3/TTL 0.07
f6/f7 -0.44
f4/f 2.51
ImgH/f 1.38
ΣT/TTL 0.23
f3/f5 1.55
f5/f7 0.57
R10/R11 1.00
DT62/DT72 0.77
其中：CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；ImgH为成像面上有效像素区域对角线长的一半；R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径；DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
为实现上述设计参数，本实施例所述的七片式广角镜头所采用的具体设计见下表：
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -33.7136 1.9758 1.53/55.8 0.0000
S2 非球面 2.9346 2.0280   0.0000
S3 非球面 2.9199 0.6000 1.53/55.8 0.0000
S4 非球面 1.8969 1.0224   0.0000
S5 非球面 6.1526 1.5161 1.53/55.8 0.0000
S6 非球面 -10.8301 0.2103   0.0000
STO 球面 无穷 1.4495    
S7 球面 26.5937 2.5549 1.83/42.7  
S8 球面 -8.0000 0.1000    
S9 球面 11.2147 2.6572 1.71/53.9  
S10 球面 -4.5720 0.0050    
S11 球面 -4.5720 0.6000 1.92/20.9  
S12 球面 15.8786 0.1000    
S13 非球面 5.7772 3.7839 1.53/55.8 0.0000
S14 非球面 -16.9531 1.3120   0.0000
S15 球面 无穷 0.5500 1.52/64.2  
S16 球面 无穷 0.5400    
S17 球面 无穷      
本实施例所述的七片式广角镜头中非球面透镜的非球面高次项系数(A4、A6、A8、A10、A12、A14、A16)见下表：
面号 A4 A6 A8 A10 A12 A14 A16
S1 7.2830E-03 -6.6609E-04 4.8964E-05 -2.3872E-06 7.3147E-08 -1.2613E-09 9.2387E-12
S2 1.7413E-03 3.4767E-03 -2.5180E-03 8.2725E-04 -1.5173E-04 1.4871E-05 -6.1167E-07
S3 -4.4914E-02 -2.7555E-03 6.2362E-03 -2.1377E-03 3.8052E-04 -3.8197E-05 1.6841E-06
S4 -5.2647E-02 4.4934E-05 9.9453E-03 -2.9907E-03 -1.0371E-04 3.3933E-04 -6.0957E-05
S5 6.3506E-03 -1.0330E-05 4.3591E-03 -1.9885E-03 6.0891E-04 -7.6680E-05 2.4869E-06
S6 4.4009E-03 -1.9665E-02 4.5770E-02 -5.4940E-02 3.7095E-02 -1.2997E-02 1.8620E-03
S13 -3.9213E-03 -2.3133E-05 1.8322E-05 -3.4686E-06 2.4360E-07 -9.8796E-09 7.2375E-11
S14 1.8109E-03 -6.6115E-04 8.9112E-05 -6.9228E-06 2.5363E-07 -3.5084E-09 -6.3954E-12
本实施例所述的七片式广角镜头，在实现110°超广角的基础上，对轴外像差，边缘像面的亮度，畸变等进行了较好的矫正，参见附图66、67、68，并且在实现小型化的同时保持了良好的工艺性。
以上实施例仅是为充分说明本发明广角摄像镜头而所举的较佳具体实施方式，并非用于限定本发明的保护范围。本技术领域的技术人员在本发明基础上所作的等同替代或变换，均在本发明的保护范围之内。本发明的保护范围以权利要求书记载的内容为准。

Claims (18)

  1. 一种七片式广角镜头，其特征在于：由物侧至像侧依次包含：
    具有负屈折力的第一透镜；
    具有负屈折力的第二透镜；
    具有屈折力的第三透镜；
    具有正屈折力的第四透镜；
    具有屈折力的第五透镜；
    具有屈折力的第六透镜；
    具有屈折力的第七透镜；
    并满足以下关系式：
    0.06<CT3/TTL<0.15；
    -0.7<f6/f7<-0.2；
    其中，CT3为第三透镜在光轴上的中心厚度；TTL为第一透镜物侧面至成像面的轴上距离；f6为第六透镜的有效焦距；f7为第七透镜的有效焦距。
  2. 如权利要求1所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：1.5<f4/f<3；
    其中，f4为第四透镜的有效焦距；f为七片式广角镜头的有效焦距。
  3. 如权利要求1所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：1.3<ImgH/f<2.5；
    其中，ImgH为成像面上有效像素区域对角线长的一半；f为七片式广角镜头的有效焦距。
  4. 如权利要求1所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：0.2<ΣT/TTL<0.5；
    其中，ΣT为第一透镜至第七透镜任意相邻两透镜之间轴上间隔距离的总和；TTL为第一透镜物侧面至成像面的轴上距离。
  5. 如权利要求1所述的七片式广角镜头，其特征在于：所述的七片式广角镜头：第五透镜具有负屈折力。
  6. 如权利要求5所述的七片式广角镜头，其特征在于：所述的七片式广角镜头：第六透镜具有正屈折力，其像侧面为凸面。
  7. 如权利要求6所述的七片式广角镜头，其特征在于：所述的七片式广角镜头：第七透镜具有负屈折力。
  8. 如权利要求7所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：-4.1<f1/f<-2.5；
    其中，f1为第一透镜的有效焦距；f为七片式广角镜头的有效焦距。
  9. 如权利要求7所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：0.55<CT3/CT6<1.3；
    其中，CT3为第三透镜在光轴上的中心厚度；CT6为第六透镜在光轴上的中心厚度。
  10. 如权利要求7所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：0.25<CT5/CT6<0.5；
    其中，CT5为第五透镜在光轴上的中心厚度；CT6为第六透镜在光轴上的中心厚度。
  11. 如权利要求7所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：0.7<DT31/DT62<1.1；
    其中，DT31为第三透镜物侧面的有效半径；DT62为第六透镜像侧面的有效半径。
  12. 如权利要求1所述的七片式广角镜头，其特征在于：所述的七片式广角镜头：第五透镜具有正屈折力，其像侧面为凸面。
  13. 如权利要求12所述的七片式广角镜头，其特征在于：所述的七片式广角镜头：第六透镜具有负屈折力，其物侧面为凹面，像侧面为凹面。
  14. 如权利要求13所述的七片式广角镜头，其特征在于：所述的七片式广角镜头：第七透镜具有正屈折力。
  15. 如权利要求14所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：1<f3/f5<3.5；
    其中，f3为第三透镜的有效焦距，f5为第五透镜的有效焦距。
  16. 如权利要求14所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：0.3<f5/f7<0.6；
    其中，f5为第五透镜的有效焦距，f7为第七透镜的有效焦距。
  17. 如权利要求14所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：0.7<R10/R11<1.2；
    其中，R10为第五透镜像侧面的曲率半径；R11为第六透镜物侧面的曲率半径。
  18. 如权利要求14所述的七片式广角镜头，其特征在于：所述的七片式广角镜头满足下列关系式：0.6<DT62/DT72<1；
    其中，DT62为第六透镜像侧面的有效半径；DT72为第七透镜像侧面的有效半径。
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