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WO2021114243A1 - Caméra optique de capture d'image - Google Patents

Caméra optique de capture d'image Download PDF

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Publication number
WO2021114243A1
WO2021114243A1 PCT/CN2019/125222 CN2019125222W WO2021114243A1 WO 2021114243 A1 WO2021114243 A1 WO 2021114243A1 CN 2019125222 W CN2019125222 W CN 2019125222W WO 2021114243 A1 WO2021114243 A1 WO 2021114243A1
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WIPO (PCT)
Prior art keywords
lens
curvature
imaging optical
radius
ttl
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PCT/CN2019/125222
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English (en)
Chinese (zh)
Inventor
马健
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AAC Optics Changzhou Co Ltd
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AAC Optics Changzhou Co Ltd
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Priority to PCT/CN2019/125222 priority Critical patent/WO2021114243A1/fr
Publication of WO2021114243A1 publication Critical patent/WO2021114243A1/fr
Anticipated expiration legal-status Critical
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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
    • 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
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Definitions

  • the present invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal equipment such as smart phones and digital cameras, as well as imaging devices such as monitors and PC lenses.
  • the photosensitive devices of general photographic lenses are nothing more than photosensitive coupled devices (CCD) or complementary metal oxide semiconductor devices (Complementary Metal).
  • CCD photosensitive coupled devices
  • CMOS Sensor complementary metal oxide semiconductor devices
  • the pixel size of photosensitive devices has been reduced, and the development trend of current electronic products with good functions, thin and short appearance, therefore, has a good
  • the miniaturized camera lens with image quality has become the mainstream in the current market.
  • the lenses traditionally mounted on mobile phone cameras often adopt three-element, four-element, or even five-element or six-element lens structures.
  • the seven-element lens structure gradually appears in the lens design.
  • the seven-element lens has good optical performance, its optical power, lens spacing and lens shape settings are still unreasonable, resulting in the lens structure having good optical performance, but cannot meet the requirements of large aperture, Design requirements for ultra-thin and wide-angle.
  • the object of the present invention is to provide an imaging optical lens, which has good optical performance and meets the design requirements of large aperture, ultra-thin, and wide-angle.
  • an embodiment of the present invention provides an imaging optical lens.
  • the imaging optical lens includes a first lens, a second lens, a third lens, and a fourth lens in order from the object side to the image side.
  • the refractive index of the sixth lens is n6, and satisfies the following relationship: 3.50 ⁇ f1/f ⁇ 4.50; f2 ⁇ 0, 1.55 ⁇ n6 ⁇ 1.70.
  • the on-axis thickness of the fourth lens is d7
  • the on-axis distance from the image side surface of the fourth lens to the object side surface of the fifth lens is d8, and the following relationship is satisfied: 1.20 ⁇ d7/d8 ⁇ 3.20.
  • the radius of curvature of the object side surface of the third lens is R5
  • the radius of curvature of the image side surface of the third lens is R6, and the following relationship is satisfied: 6.00 ⁇ (R5+R6)/(R5-R6) ⁇ 17.00 .
  • the curvature radius of the object side surface of the first lens is R1
  • the curvature radius of the image side surface of the first lens is R2
  • the axial thickness of the first lens is d1
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -14.03 ⁇ (R1+R2)/(R1-R2) ⁇ -4.25; 0.04 ⁇ d1/TTL ⁇ 0.13.
  • the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the axial thickness of the second lens is d3, and the focal length of the second lens is f2.
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -419.58 ⁇ f2/f ⁇ -60.83; 16.58 ⁇ (R3+R4)/(R3-R4) ⁇ 55.18; 0.02 ⁇ d3/TTL ⁇ 0.07.
  • the focal length of the third lens is f3, the axial thickness of the third lens is d5, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -35.55 ⁇ f3/f ⁇ - 2.29; 0.02 ⁇ d5/TTL ⁇ 0.12.
  • the focal length of the fourth lens is f4
  • the radius of curvature of the object side of the fourth lens is R7
  • the radius of curvature of the image side of the fourth lens is R8, and the on-axis thickness of the fourth lens is d7
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.75 ⁇ f4/f ⁇ 2.57; -3.13 ⁇ (R7+R8)/(R7-R8) ⁇ -0.73; 0.05 ⁇ d7/TTL ⁇ 0.15.
  • the focal length of the fifth lens is f5, the radius of curvature of the object side of the fifth lens is R9, the radius of curvature of the image side of the fifth lens is R10, and the on-axis thickness of the fifth lens is d9 ,
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -27.59 ⁇ f5/f ⁇ 11.43; -15.83 ⁇ (R9+R10)/(R9-R10) ⁇ 17.03; 0.02 ⁇ d9/TTL ⁇ 0.08.
  • the focal length of the sixth lens is f6, the radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, and the on-axis thickness of the sixth lens is d11 ,
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -3.99 ⁇ f6/f ⁇ -1.12; 1.25 ⁇ (R11+R12)/(R11-R12) ⁇ 5.32; 0.02 ⁇ d11/TTL ⁇ 0.09.
  • the focal length of the seventh lens is f7
  • the radius of curvature of the object side of the seventh lens is R13
  • the radius of curvature of the image side of the seventh lens is R14
  • the axial thickness of the seventh lens is d13
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.31 ⁇ f7/f ⁇ 1.04; -1.77 ⁇ (R13+R14)/(R13-R14) ⁇ -0.31; 0.05 ⁇ d13/TTL ⁇ 0.19.
  • the focal length of the eighth lens is f8, the radius of curvature of the object side of the eighth lens is R15, the radius of curvature of the image side of the eighth lens is R16, and the on-axis thickness of the eighth lens is d15.
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -2.13 ⁇ f8/f ⁇ -0.61; 0.02 ⁇ d15/TTL ⁇ 0.08; 0.35 ⁇ (R15+R16)/(R15-R16) ⁇ 4.10.
  • the imaging optical lens according to the present invention has excellent optical characteristics, and has the characteristics of large aperture, wide-angle, and ultra-thin. It is especially suitable for high-pixel CCD, CMOS and other imaging elements. Mobile phone camera lens assembly and WEB camera lens.
  • FIG. 1 is a schematic diagram of the structure of an imaging optical lens according to a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 1;
  • FIG. 3 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 1;
  • FIG. 4 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 1;
  • FIG. 5 is a schematic diagram of the structure of an imaging optical lens according to a second embodiment of the present invention.
  • FIG. 6 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 5;
  • FIG. 7 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 5;
  • FIG. 8 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 5;
  • FIG. 9 is a schematic diagram of the structure of an imaging optical lens according to a third embodiment of the present invention.
  • FIG. 10 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 9;
  • FIG. 11 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 9;
  • FIG. 12 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 9.
  • FIG. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention.
  • the imaging optical lens 10 includes eight lenses.
  • the imaging optical lens 10 includes in order from the object side to the image side: an aperture S1, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a third lens with negative refractive power.
  • An optical element such as an optical filter GF may be provided between the eighth lens L8 and the image plane Si.
  • the focal length of the overall imaging optical lens 10 is defined as f, the focal length of the first lens L1 is f1, and the following relationship is satisfied: 3.50 ⁇ f1/f ⁇ 4.50, which can effectively balance the spherical aberration and field curvature of the system.
  • the second lens L2 has a negative refractive power, and the system has better imaging quality and lower sensitivity through a reasonable distribution of optical power.
  • the refractive index of the sixth lens L6 is defined as n6, which satisfies the following relational expression: 1.55 ⁇ n6 ⁇ 1.70, which specifies the refractive index of the sixth lens, which helps to improve the performance of the optical system within the range of the conditional expression.
  • the on-axis thickness of the fourth lens L4 is d7
  • the on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5 is d8, which satisfies the following relationship: 1.20 ⁇ d7/d8 ⁇ 3.20, specifies the ratio of the thickness of the fourth lens to the distance between the image side surface of the fourth lens and the object side surface of the fifth lens, which helps to compress the total length of the optical system within the scope of the conditional formula and achieve the effect of ultra-thinness.
  • the curvature radius of the object side surface of the third lens L3 is R5, and the curvature radius of the image side surface of the third lens L3 is R6, 6.00 ⁇ (R5+R6)/(R5-R6) ⁇ 17.00, which stipulates the third lens
  • the shape within the range specified by the conditional formula, can ease the deflection of light passing through the lens and effectively reduce aberrations.
  • 6.02 ⁇ (R5+R6)/(R5-R6) ⁇ 16.52 is satisfied.
  • the curvature radius of the object side surface of the first lens L1 is R1
  • the curvature radius of the image side surface of the first lens L1 is R2, which satisfies the following relationship: -14.03 ⁇ (R1+R2)/(R1-R2) ⁇ -4.25, in the conditional formula Within the scope, reasonably control the shape of the first lens so that the first lens can effectively correct the spherical aberration of the system.
  • -8.77 ⁇ (R1+R2)/(R1-R2) ⁇ -5.32 is satisfied.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.04 ⁇ d1/TTL ⁇ 0.13.
  • 0.06 ⁇ d1/TTL ⁇ 0.10 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the second lens L2 is f2 which satisfies the following relationship: -419.58 ⁇ f2/f ⁇ -60.83.
  • the curvature radius of the object side surface of the second lens L2 is R3, and the curvature radius of the image side surface of the second lens L2 is R4, which satisfies the following relationship: 16.58 ⁇ (R3+R4)/(R3-R4) ⁇ 55.18, specifies the shape of the second lens L2.
  • R3+R4/(R3-R4) ⁇ 55.18 specifies the shape of the second lens L2.
  • it is within the range as the lens becomes ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration.
  • 26.53 ⁇ (R3+R4)/(R3-R4) ⁇ 44.14 is satisfied.
  • the on-axis thickness of the second lens L2 is d3, which satisfies the following relational expression: 0.02 ⁇ d3/TTL ⁇ 0.07. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d3/TTL ⁇ 0.06 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the third lens L3 is f3
  • the following relationship is satisfied: -35.55 ⁇ f3/f ⁇ -2.29
  • the system has better imaging Quality and low sensitivity.
  • it satisfies -22.22 ⁇ f3/f ⁇ -2.86.
  • the on-axis thickness of the third lens L3 is d5, which satisfies the following relational expression: 0.02 ⁇ d5/TTL ⁇ 0.12. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.04 ⁇ d5/TTL ⁇ 0.09 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the fourth lens L4 is f4
  • the focal length of the fourth lens L4 is f4
  • 0.75 ⁇ f4/f ⁇ 2.57 which specifies the ratio of the focal length of the fourth lens to the focal length of the system.
  • 1.21 ⁇ f4/f ⁇ 2.06 is satisfied.
  • the curvature radius of the object side surface of the fourth lens L4 is R7
  • the curvature radius of the image side surface of the fourth lens L4 is R8, which satisfies the following relationship: -3.13 ⁇ (R7+R8)/(R7-R8) ⁇ -0.73, which is
  • the shape of the fourth lens L4 is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view.
  • it satisfies -1.96 ⁇ (R7+R8)/(R7-R8) ⁇ -0.92.
  • the on-axis thickness of the fourth lens L4 is d7, which satisfies the following relationship: 0.05 ⁇ d7/TTL ⁇ 0.15, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d7/TTL ⁇ 0.12 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the fifth lens L5 as f5
  • the limitation on the fifth lens L5 can effectively make the light of the imaging lens
  • the angle is gentle, reducing tolerance sensitivity.
  • -17.24 ⁇ f5/f ⁇ 9.14 is satisfied.
  • the radius of curvature of the object side of the fifth lens L5 is R9
  • the radius of curvature of the image side of the fifth lens L5 is R10, which satisfies the following relational expression: -15.83 ⁇ (R9+R10)/(R9-R10) ⁇ 17.03.
  • the shape of the five lens L5 is within the range of conditions, with the development of ultra-thin and wide-angle, it is conducive to correcting the aberration of the off-axis angle of view.
  • -9.89 ⁇ (R9+R10)/(R9-R10) ⁇ 13.63 is satisfied.
  • the on-axis thickness of the fifth lens L5 is d9, which satisfies the following relational formula: 0.02 ⁇ d9/TTL ⁇ 0.08. Within the range of the conditional formula, it is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d9/TTL ⁇ 0.07 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the sixth lens L6 as f6, which satisfies the following relationship: -3.99 ⁇ f6/f ⁇ -1.12, through the reasonable distribution of optical power, the system has better imaging Quality and low sensitivity.
  • it satisfies -2.49 ⁇ f6/f ⁇ -1.40.
  • the radius of curvature of the object side surface of the sixth lens L6 is R11
  • the radius of curvature of the image side surface of the sixth lens L6 is R12, 1.25 ⁇ (R11+R12)/(R11-R12) ⁇ 5.32, which defines the shape of the sixth lens L6.
  • R11 the radius of curvature of the object side surface of the sixth lens L6
  • R12 1.25 ⁇ (R11+R12)/(R11-R12) ⁇ 5.32, which defines the shape of the sixth lens L6.
  • the on-axis thickness of the sixth lens L6 is d11, which satisfies the following relational expression: 0.02 ⁇ d11/TTL ⁇ 0.09. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.04 ⁇ d11/TTL ⁇ 0.07 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the seventh lens L7 is f7, which satisfies the following relational expression: 0.31 ⁇ f7/f ⁇ 1.04.
  • the system has a relatively high optical power through reasonable distribution of optical power. Good imaging quality and low sensitivity.
  • 0.50 ⁇ f7/f ⁇ 0.83 is satisfied.
  • the radius of curvature of the object side surface of the seventh lens is R13
  • the radius of curvature of the image side surface of the seventh lens is R14, which satisfies the following relationship: -1.77 ⁇ (R13+R14)/(R13-R14) ⁇ -0.31, which is specified
  • This is the shape of the seventh lens L7.
  • it is beneficial to correct the aberration of the off-axis angle of view.
  • the on-axis thickness of the seventh lens L7 is d13, which satisfies the following relational expression: 0.05 ⁇ d13/TTL ⁇ 0.19. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.08 ⁇ d13/TTL ⁇ 0.15 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the eighth lens L8 as f8
  • the system has better imaging Quality and low sensitivity.
  • it satisfies -1.33 ⁇ f8/f ⁇ -0.76.
  • the curvature radius of the object side surface of the eighth lens L8 is R15
  • the curvature radius of the image side surface of the eighth lens L8 is R16, which satisfies the following relationship: 0.35 ⁇ (R15+R16)/(R15-R16) ⁇ 4.10, and the eighth lens is specified
  • the shape of the lens L8 is within the range of conditions, with the development of ultra-thin and wide-angle, it is beneficial to correct the off-axis angle of view aberration and other problems.
  • 0.55 ⁇ (R15+R16)/(R15-R16) ⁇ 3.28 is satisfied.
  • the on-axis thickness of the eighth lens L8 is d15, which satisfies the following relational formula: 0.02 ⁇ d15/TTL ⁇ 0.08. Within the range of the conditional formula, it is beneficial to realize ultra-thinness. Preferably, 0.04 ⁇ d15/TTL ⁇ 0.07 is satisfied.
  • the image height of the overall imaging optical lens 10 is IH, and the following conditional formula is satisfied: TTL/IH ⁇ 1.56, thereby achieving ultra-thinness.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 1.49. Large aperture, good imaging performance.
  • the wide-angle FOV of the imaging optical lens 10 is greater than or equal to 84°. Achieve wide-angle performance.
  • the imaging optical lens 10 can have good optical performance, and at the same time, it can meet the requirements of large aperture, wide-angle, and ultra-thinness. Design requirements; According to the characteristics of the optical lens 10, the optical lens 10 is particularly suitable for mobile phone camera lens components and WEB camera lenses composed of high-pixel CCD, CMOS and other imaging elements.
  • the imaging optical lens 10 of the present invention will be described below with an example.
  • the symbols described in each example are as follows.
  • the unit of focal length, distance on axis, radius of curvature, thickness on axis, position of inflection point, and position of stagnation point is mm.
  • TTL total optical length (the on-axis distance from the object side of the first lens L1 to the imaging surface), the unit is mm;
  • the object side and/or the image side of the lens can also be provided with inflection points and/or stagnation points to meet high-quality imaging requirements.
  • inflection points and/or stagnation points for specific implementations, refer to the following.
  • Table 1 and Table 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.
  • R The radius of curvature of the optical surface, and the radius of curvature of the center of the lens
  • R1 the radius of curvature of the object side surface of the first lens L1;
  • R2 the radius of curvature of the image side surface of the first lens L1;
  • R3 the radius of curvature of the object side surface of the second lens L2;
  • R4 the radius of curvature of the image side surface of the second lens L2;
  • R5 the radius of curvature of the object side surface of the third lens L3;
  • R6 the radius of curvature of the image side surface of the third lens L3;
  • R7 the radius of curvature of the object side of the fourth lens L4;
  • R8 the radius of curvature of the image side surface of the fourth lens L4;
  • R9 the radius of curvature of the object side surface of the fifth lens L5;
  • R10 the radius of curvature of the image side surface of the fifth lens L5;
  • R11 the radius of curvature of the object side surface of the sixth lens L6;
  • R12 the radius of curvature of the image side surface of the sixth lens L6;
  • R13 the radius of curvature of the object side surface of the seventh lens L7;
  • R14 the radius of curvature of the image side surface of the seventh lens L7;
  • R15 the radius of curvature of the image side surface of the eighth lens L8;
  • R16 the radius of curvature of the image side surface of the eighth lens L8;
  • R17 the radius of curvature of the object side of the optical filter GF
  • R18 the radius of curvature of the image side surface of the optical filter GF
  • d0 the on-axis distance from the aperture S1 to the object side of the first lens L1;
  • d2 the on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;
  • d4 the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;
  • d6 the on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;
  • d10 the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;
  • d11 the on-axis thickness of the sixth lens L6;
  • d12 the on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7;
  • d14 the on-axis distance from the image side surface of the seventh lens L7 to the object side surface of the eighth lens L8;
  • d16 the on-axis distance from the image side surface of the eighth lens L8 to the object side surface of the optical filter GF;
  • d17 the axial thickness of the optical filter GF
  • nd refractive index of d-line
  • nd1 the refractive index of the d-line of the first lens L1;
  • nd2 the refractive index of the d-line of the second lens L2;
  • nd3 the refractive index of the d-line of the third lens L3;
  • nd4 the refractive index of the d-line of the fourth lens L4;
  • nd5 the refractive index of the d-line of the fifth lens L5;
  • nd6 the refractive index of the d-line of the sixth lens L6;
  • nd7 the refractive index of the d-line of the seventh lens L7;
  • nd7 the refractive index of the d-line of the eighth lens L8;
  • ndg the refractive index of the d-line of the optical filter GF
  • vg Abbe number of optical filter GF.
  • Table 2 shows the aspheric surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.
  • k is the conic coefficient
  • A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspherical coefficients.
  • the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1).
  • the present invention is not limited to the aspheric polynomial form represented by the formula (1).
  • Table 3 and Table 4 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 10 of the first embodiment of the present invention.
  • P1R1 and P1R2 represent the object side and image side of the first lens L1 respectively
  • P2R1 and P2R2 represent the object side and image side of the second lens L2 respectively
  • P3R1 and P3R2 represent the object side and image side of the third lens L3 respectively.
  • P4R1, P4R2 represent the object side and image side of the fourth lens L4
  • P5R1, P5R2 represent the object side and image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and image side of the sixth lens L6
  • P7R1 P7R2 represents the object side and image side of the seventh lens L7, respectively
  • P8R1 and P8R2 represent the object side and the image side of the eighth lens L8, respectively.
  • the corresponding data in the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • the data corresponding to the “stationary point position” column is the vertical distance from the stationary point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • FIG. 2 and 3 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 470 nm pass through the imaging optical lens 10 of the first embodiment.
  • Fig. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 10 of the first embodiment.
  • the field curvature S in Fig. 4 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction. song.
  • Table 13 shows the values corresponding to the various numerical values in each of Examples 1, 2, and 3 and the parameters specified in the conditional expressions.
  • the first embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 2.932mm
  • the full-field image height is 4.00mm
  • the diagonal field angle is 84.10°
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the second embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 6 shows aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 7 and Table 8 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • FIG. 6 and 7 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 470 nm pass through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 20 of the second embodiment.
  • the second embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 2.899mm
  • the full-field image height is 4.00mm
  • the diagonal field angle is 84.79°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
  • Table 11 and Table 12 show the inflection point and stagnation point design data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
  • FIG. 10 and 11 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light with wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 470 nm passes through the imaging optical lens 30 of the third embodiment.
  • FIG. 12 shows a schematic diagram of field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 30 of the third embodiment.
  • the entrance pupil diameter of the imaging optical lens is 3.932mm
  • the full-field image height is 4.00mm
  • the diagonal field angle is 84.60°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • Fno is the aperture F number of the imaging optical lens.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

L'invention concerne une caméra optique de capture d'image (10). D'un côté objet à un côté image, la caméra optique de capture d'image (10) comprend séquentiellement une première lentille (L1), une deuxième lentille (L2), une troisième lentille (L3), une quatrième lentille (L4), une cinquième lentille (L5), une sixième lentille (L6), une septième lentille (L7), et une huitième lentille (L8) ; et la distance focale de la caméra optique de capture d'image (10) est f, la distance focale de la première lentille (L1) est f1, la longueur focale de la deuxième lentille (L2) est f2, l'indice de réfraction de la sixième lentille (L6) est n6, et les expressions relationnelles suivantes sont satisfaites : 3,50≤f1/f≤4,50, f2≤0, et 1,55≤n6≤1,70. La caméra optique de capture d'image (10) présente une bonne performance optique et satisfait les exigences de conception de grande ouverture, de grand angle et d'ultra-minceur.
PCT/CN2019/125222 2019-12-13 2019-12-13 Caméra optique de capture d'image Ceased WO2021114243A1 (fr)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368953A (en) * 1979-07-12 1983-01-18 Olympus Optical Co., Ltd. Zoom lens system
US20080252996A1 (en) * 2007-04-11 2008-10-16 Hoya Corporation Telephoto lens system
CN105137568A (zh) * 2015-08-12 2015-12-09 北京天诚盛业科技有限公司 虹膜/人脸用两档变焦成像镜头、成像模组和识别装置
CN107703608A (zh) * 2017-11-22 2018-02-16 浙江舜宇光学有限公司 光学成像镜头
CN108107546A (zh) * 2017-09-29 2018-06-01 玉晶光电(厦门)有限公司 光学成像镜头
CN108594407A (zh) * 2018-06-26 2018-09-28 浙江舜宇光学有限公司 摄像镜头
CN108681040A (zh) * 2018-08-02 2018-10-19 浙江舜宇光学有限公司 光学成像镜片组
CN110068915A (zh) * 2019-05-10 2019-07-30 浙江舜宇光学有限公司 光学成像系统

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368953A (en) * 1979-07-12 1983-01-18 Olympus Optical Co., Ltd. Zoom lens system
US20080252996A1 (en) * 2007-04-11 2008-10-16 Hoya Corporation Telephoto lens system
CN105137568A (zh) * 2015-08-12 2015-12-09 北京天诚盛业科技有限公司 虹膜/人脸用两档变焦成像镜头、成像模组和识别装置
CN108107546A (zh) * 2017-09-29 2018-06-01 玉晶光电(厦门)有限公司 光学成像镜头
CN107703608A (zh) * 2017-11-22 2018-02-16 浙江舜宇光学有限公司 光学成像镜头
CN108594407A (zh) * 2018-06-26 2018-09-28 浙江舜宇光学有限公司 摄像镜头
CN108681040A (zh) * 2018-08-02 2018-10-19 浙江舜宇光学有限公司 光学成像镜片组
CN110068915A (zh) * 2019-05-10 2019-07-30 浙江舜宇光学有限公司 光学成像系统

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