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WO2021128129A1 - Objectif optique d'appareil photo - Google Patents

Objectif optique d'appareil photo Download PDF

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Publication number
WO2021128129A1
WO2021128129A1 PCT/CN2019/128579 CN2019128579W WO2021128129A1 WO 2021128129 A1 WO2021128129 A1 WO 2021128129A1 CN 2019128579 W CN2019128579 W CN 2019128579W WO 2021128129 A1 WO2021128129 A1 WO 2021128129A1
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WIPO (PCT)
Prior art keywords
lens
imaging optical
ttl
optical lens
curvature
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Ceased
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PCT/CN2019/128579
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English (en)
Chinese (zh)
Inventor
寺岡弘之
张磊
崔元善
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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/CN2019/128579 priority Critical patent/WO2021128129A1/fr
Publication of WO2021128129A1 publication Critical patent/WO2021128129A1/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 coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal).
  • CCD Charge Coupled Device
  • CMOS Sensor complementary metal oxide semiconductor devices
  • the pixel size of photosensitive devices has been reduced, and nowadays electronic products are developed with good functions, thin and short appearance, so they have good
  • the miniaturized camera lens with image quality has become the mainstream in the current market.
  • the lenses traditionally mounted on mobile phone cameras mostly adopt a three-element or four-element lens structure.
  • the object of the present invention is to provide an imaging optical lens that can meet the requirements of ultra-thin and wide-angle while obtaining high imaging performance.
  • the embodiments of the present invention provide 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 fifth lens, the sixth lens, and the seventh lens the first lens has negative refractive power, the second lens has negative refractive power, the third lens has positive refractive power, and the fourth lens has Positive refractive power;
  • the maximum field of view of the imaging optical lens is FOV
  • the focal length of the first lens is f1
  • the focal length of the third lens is f3
  • the radius of curvature of the object side surface of the fifth lens is R9
  • the radius of curvature of the image side surface of the fifth lens is R10, and the following relationship is satisfied: 100.00° ⁇ FOV ⁇ 135.00°; -5.00 ⁇ f1/f3 ⁇ -2.50; -20.00 ⁇ R9/R10 ⁇ -2.00.
  • the object side surface of the first lens is convex on the paraxial axis, and the image side surface is concave on the par axis;
  • the focal length of the imaging optical lens is f
  • the radius of curvature 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, and the on-axis thickness of the first lens is d1, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -12.96 ⁇ f1/f ⁇ -2.30 ; 1.44 ⁇ (R1+R2)/(R1-R2) ⁇ 4.61; 0.02 ⁇ d1/TTL ⁇ 0.15.
  • the imaging optical lens satisfies the following relational expressions: -8.10 ⁇ f1/f ⁇ -2.87, 2.30 ⁇ (R1+R2)/(R1-R2) ⁇ 3.69; 0.03 ⁇ d1/TTL ⁇ 0.12.
  • the object side of the second lens is concave on the paraxial axis, and the image side is concave on the paraxial;
  • the focal length of the imaging optical lens is f
  • the focal length of the second lens is f2
  • the second lens The curvature radius of the object side is R3, the curvature radius of the image side of the second lens is R4, the on-axis thickness of the second lens is d3, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -3.97 ⁇ f2/f ⁇ -1.12; 0.04 ⁇ (R3+R4)/(R3-R4) ⁇ 1.22; 0.05 ⁇ d3/TTL ⁇ 0.25.
  • the imaging optical lens satisfies the following relationship: -2.48 ⁇ f2/f ⁇ -1.40; 0.07 ⁇ (R3+R4)/(R3-R4) ⁇ 0.98; 0.07 ⁇ d3/TTL ⁇ 0.20.
  • the object side of the third lens is convex on the paraxial axis, and the image side is concave on the paraxial;
  • the focal length of the imaging optical lens is f
  • the radius of curvature of the object side of the third lens is R5.
  • the curvature radius of the image side surface of the third lens is R6, the on-axis thickness of the third lens is d5, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.66 ⁇ f3/f ⁇ 2.16; -6.32 ⁇ (R5+R6)/(R5-R6) ⁇ -1.47; 0.03 ⁇ d5/TTL ⁇ 0.10.
  • the imaging optical lens satisfies the following relationship: 1.06 ⁇ f3/f ⁇ 1.73; -3.95 ⁇ (R5+R6)/(R5-R6) ⁇ -1.84; 0.04 ⁇ d5/TTL ⁇ 0.08.
  • the object side of the fourth lens is convex on the paraxial axis, and the image side is convex on the paraxial;
  • the focal length of the imaging optical lens is f
  • the focal length of the fourth lens is f4
  • the fourth lens is
  • the radius of curvature of the object side of the lens is R7
  • the radius of curvature of the image side of the fourth lens is R8,
  • the axial thickness of the fourth lens is d7
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied : 0.40 ⁇ f4/f ⁇ 1.32; -0.20 ⁇ (R7+R8)/(R7-R8) ⁇ 0.51; 0.03 ⁇ d7/TTL ⁇ 0.10.
  • the imaging optical lens satisfies the following relationship: 0.65 ⁇ f4/f ⁇ 1.05; -0.12 ⁇ (R7+R8)/(R7-R8) ⁇ 0.40; 0.05 ⁇ d7/TTL ⁇ 0.08.
  • the object side of the fifth lens is concave on the paraxial axis, and the image side is concave on the paraxial;
  • the focal length of the imaging optical lens is f
  • the focal length of the fifth lens is f5
  • the fifth lens The on-axis thickness of is d9, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -3.98 ⁇ f5/f ⁇ -1.09; 0.17 ⁇ (R9+R10)/(R9-R10) ⁇ 1.36; 0.01 ⁇ d9/TTL ⁇ 0.05.
  • the imaging optical lens satisfies the following relationship: -2.48 ⁇ f5/f ⁇ -1.37; 0.28 ⁇ (R9+R10)/(R9-R10) ⁇ 1.09; 0.02 ⁇ d9/TTL ⁇ 0.04.
  • the object side of the sixth lens is concave on the paraxial axis, and the image side is convex on the paraxial;
  • the focal length of the imaging optical lens is f
  • the focal length of the sixth lens is f6, and the sixth lens
  • the radius of curvature of the object side surface is R11
  • the radius of curvature of the image side surface of the sixth lens is R12
  • the axial thickness of the sixth lens is d11
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.24 ⁇ f6/f ⁇ 1.07; 0.64 ⁇ (R11+R12)/(R11-R12) ⁇ 3.27; 0.04 ⁇ d11/TTL ⁇ 0.15.
  • the imaging optical lens satisfies the following relationship: 0.39 ⁇ f6/f ⁇ 0.86; 1.03 ⁇ (R11+R12)/(R11-R12) ⁇ 2.62; 0.06 ⁇ d11/TTL ⁇ 0.12.
  • the image side surface of the seventh lens is concave on the paraxial; the focal length of the imaging optical lens is f, the focal length of the seventh lens is f7, and the radius of curvature of the object side of the seventh lens is R13, so The curvature radius of the image side surface of the seventh lens is R14, the on-axis thickness of the seventh lens is d13, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -1.42 ⁇ f7/f ⁇ -0.27 ; 0.28 ⁇ (R13+R14)/(R13-R14) ⁇ 2.67; 0.03 ⁇ d13/TTL ⁇ 0.11.
  • the imaging optical lens satisfies the following relationship: -0.89 ⁇ f7/f ⁇ -0.33; 0.45 ⁇ (R13+R14)/(R13-R14) ⁇ 2.14; 0.04 ⁇ d13/TTL ⁇ 0.09.
  • the total optical length TTL of the imaging optical lens is less than or equal to 12.28 mm.
  • the total optical length TTL of the imaging optical lens is less than or equal to 11.72 mm.
  • the aperture F number of the imaging optical lens is less than or equal to 2.88.
  • the aperture F number of the imaging optical lens is less than or equal to 2.83.
  • the imaging optical lens according to the present invention has excellent optical characteristics, is ultra-thin, wide-angle and fully compensated for chromatic aberration, and is especially suitable for mobile phone camera lenses composed of high-pixel CCD, CMOS and other imaging elements Components 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 seven lenses. Specifically, the imaging optical lens 10 includes in order from the object side to the image side: a first lens L1, a second lens L2, a third lens L3, an aperture S1, a fourth lens L4, a fifth lens L5, and a sixth lens. Lens L6 and seventh lens L7.
  • An optical element such as an optical filter GF may be provided on the image side of the seventh lens L7.
  • the first lens L1 has a negative refractive power
  • the second lens L2 has a negative refractive power
  • the third lens L3 has a positive refractive power
  • the fourth lens L4 has a positive refractive power.
  • the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all plastic materials.
  • FOV maximum field of view of the camera optical lens 10
  • 100.00° ⁇ FOV ⁇ 135.00° specifies the field of view of the camera optical lens 10, when within the range, it can achieve ultra-wide-angle photography, which improves users Experience.
  • the focal length of the first lens L1 as f1
  • the focal length of the third lens L3 as f3, which satisfies the following relationship: -5.00 ⁇ f1/f3 ⁇ -2.50.
  • the radius of curvature of the object side surface of the fifth lens is defined as R9, and the radius of curvature of the image side surface of the fifth lens is R10, which satisfies the following relationship: -20.00 ⁇ R9/R10 ⁇ -2.00, which specifies the fifth lens L5
  • R9 The radius of curvature of the object side surface of the fifth lens
  • the imaging optical lens 10 When the focal length of the imaging optical lens 10, the focal length of each lens, the on-axis thickness and the radius of curvature of the present invention satisfy the above-mentioned relational expressions, the imaging optical lens 10 can be made to have high performance and meet the design requirements of low TTL.
  • the object side surface of the first lens L1 is convex on the paraxial axis, and the image side surface of the first lens L1 is concave on the paraxial axis.
  • the focal length of the first lens L1 is f1, which satisfies the following relationship: -12.96 ⁇ f1/f ⁇ -2.30, which specifies the ratio of the focal length of the first lens L1 to the overall focal length.
  • the first lens has an appropriate negative refractive power, which is conducive to reducing system aberrations and at the same time conducive to the development of ultra-thin and wide-angle lenses.
  • it satisfies -8.10 ⁇ f1/f ⁇ -2.87.
  • the curvature radius R1 of the object side surface of the first lens L1 and the curvature radius R2 of the image side surface of the first lens L1 satisfy the following relationship: 1.44 ⁇ (R1+R2)/(R1-R2) ⁇ 4.61, reasonably control the shape of the first lens , So that the first lens can effectively correct the spherical aberration of the system.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.02 ⁇ d1/TTL ⁇ 0.15, which is conducive to achieving ultra-thinness.
  • the object side surface of the second lens L2 is concave at the paraxial position, and the image side surface is concave at the paraxial position.
  • the focal length of the second lens L2 is f2, which satisfies the following relationship: -3.97 ⁇ f2/f ⁇ -1.12, which specifies the ratio of the focal length of the second lens L2 to the overall focal length.
  • f2 The focal length of the second lens L2 is f2, which satisfies the following relationship: -3.97 ⁇ f2/f ⁇ -1.12, which specifies the ratio of the focal length of the second lens L2 to the overall focal length.
  • the curvature radius R3 of the object side surface of the second lens L2 and the curvature radius R4 of the image side surface of the second lens L2 satisfy the following relationship: 0.04 ⁇ (R3+R4)/(R3-R4) ⁇ 1.22, which specifies the second lens L2 When the shape is within the range, as the lens becomes ultra-thin and wide-angle, it is helpful to correct the problem of axial chromatic aberration. Preferably, 0.07 ⁇ (R3+R4)/(R3-R4) ⁇ 0.98.
  • the on-axis thickness of the second lens L2 is d3, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.05 ⁇ d3/TTL ⁇ 0.25, which is beneficial to realize ultra-thinness.
  • the object side surface of the third lens L3 is convex at the paraxial position, and the image side surface is concave at the paraxial position.
  • the focal length of the third lens L3 is f3, which satisfies the following relationship: 0.66 ⁇ f3/f ⁇ 2.16.
  • the reasonable distribution of the optical power enables the system to have better imaging quality and lower sensitivity.
  • 1.06 ⁇ f3/f ⁇ 1.73 is satisfied.
  • the curvature radius R5 of the object side surface of the third lens L3 and the curvature radius R6 of the image side surface of the third lens L3 satisfy the following relationship: -6.32 ⁇ (R5+R6)/(R5-R6) ⁇ -1.47, which can effectively control the third lens
  • the shape of the lens L3 is conducive to the molding of the third lens L3.
  • the degree of deflection of the light passing through the lens can be alleviated, and aberrations can be effectively reduced.
  • the axial thickness of the third lens L3 is d5, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.03 ⁇ d5/TTL ⁇ 0.10, which is conducive to achieving ultra-thinness.
  • the object side surface of the fourth lens L4 is convex at the paraxial position, and the image side surface is convex at the paraxial position.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the fourth lens L4 is f4, which satisfies the following relationship: 0.40 ⁇ f4/f ⁇ 1.32.
  • the system has better imaging quality and comparison.
  • Low sensitivity Preferably, 0.65 ⁇ f4/f ⁇ 1.05.
  • the curvature radius R7 of the object side surface of the fourth lens L4 and the curvature radius R8 of the image side surface of the fourth lens L4 satisfy the following relationship: -0.20 ⁇ (R7+R8)/(R7-R8) ⁇ 0.51, the fourth lens is specified
  • the shape of L4 is within the range, with the development of ultra-thin and wide-angle, it is easy to correct problems such as the aberration of the off-axis angle of view.
  • the axial thickness of the fourth lens L4 is d7, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.03 ⁇ d7/TTL ⁇ 0.10, which is conducive to achieving ultra-thinness.
  • the object side surface of the fifth lens L5 is concave at the paraxial position, and the image side surface is concave at the paraxial position.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the fifth lens L5 is f5, which satisfies the following relationship: -3.98 ⁇ f5/f ⁇ -1.09.
  • the limitation on the fifth lens L5 can effectively make the light angle of the imaging lens smooth. Reduce tolerance sensitivity.
  • the curvature radius R9 of the object side surface of the fifth lens L5 and the curvature radius R10 of the image side surface of the fifth lens L5 satisfy the following relationship: 0.17 ⁇ (R9+R10)/(R9-R10) ⁇ 1.36, the fifth lens L5 is specified
  • the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • the on-axis thickness of the fifth lens L5 is d9, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.01 ⁇ d9/TTL ⁇ 0.05, which is conducive to achieving ultra-thinness.
  • 0.02 ⁇ d9/TTL 0.02 ⁇ d9/TTL ⁇ 0.04.
  • the object side surface of the sixth lens L6 is concave at the paraxial position, and the image side surface is convex at the paraxial position.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the sixth lens L6 is f6, which satisfies the following relationship: 0.24 ⁇ f6/f ⁇ 1.07.
  • the system has better imaging quality and lower Sensitivity.
  • the curvature radius R11 of the object side surface of the sixth lens L6 and the curvature radius R12 of the image side surface of the sixth lens L6 satisfy the following relationship: 0.64 ⁇ (R11+R12)/(R11-R12) ⁇ 3.27, the sixth lens L6 is specified
  • the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • the on-axis thickness of the sixth lens L6 is d11, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.04 ⁇ d11/TTL ⁇ 0.15, which is conducive to achieving ultra-thinness.
  • the image side surface of the seventh lens L7 is concave at the paraxial position.
  • 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 relationship: -1.42 ⁇ f7/f ⁇ -0.27.
  • the system has better imaging quality and comparison.
  • Low sensitivity Preferably, -0.89 ⁇ f7/f ⁇ -0.33.
  • the curvature radius R13 of the object side surface of the seventh lens L7 and the curvature radius R14 of the image side surface of the seventh lens L7 satisfy the following relationship: 0.28 ⁇ (R13+R14)/(R13-R14) ⁇ 2.67, the seventh lens L7 is specified
  • the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • the axial thickness of the seventh lens L7 is d13, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.03 ⁇ d13/TTL ⁇ 0.11, which is conducive to achieving ultra-thinness.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 12.28 mm, which is beneficial to realize ultra-thinness.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 11.72 mm.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 2.88. Large aperture, good imaging performance. Preferably, the aperture F number of the imaging optical lens 10 is less than or equal to 2.83.
  • the overall optical length TTL of the overall imaging optical lens 10 can be shortened as much as possible, and the characteristics of miniaturization can be maintained.
  • 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.
  • FOV The maximum field of view of the camera optical lens is FOV
  • 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 object side of the optical filter GF
  • R16 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 optical filter GF;
  • d15 the axial thickness of the optical filter GF
  • d16 the on-axis distance from the image side surface of the optical filter GF to the image surface
  • 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;
  • 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 of the first embodiment of the present invention.
  • k is the conic coefficient
  • A4, A6, A8, A10, A12, A14, A16 are the aspheric 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.
  • 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, 588 nm, and 486 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 588 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 meridian direction. song.
  • Table 13 shows the values corresponding to the various values in each of Examples 1, 2, and 3 and the parameters that have been specified in the conditional expressions.
  • the first embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 1.467mm
  • the full-field image height is 3.70mm
  • the diagonal field angle is 101.00°
  • wide-angle wide-angle
  • ultra-thin and its axis and axis
  • 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 the 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 with wavelengths of 656 nm, 588 nm, and 486 nm passes through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion after light with a wavelength of 588 nm passes 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 1.089mm
  • the full field of view image height is 3.70mm
  • the maximum field of view is 134.00°
  • wide-angle, ultra-thin, and its on-axis and off-axis chromatic aberrations 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 according to the third embodiment of the present invention.
  • Table 11 and Table 12 show the design data of the inflection point and stagnation point 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, 588 nm, and 486 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 588 nm after passing through the imaging optical lens 30 of the third embodiment.
  • the entrance pupil diameter of the imaging optical lens is 1.337mm
  • the full field of view image height is 3.70mm
  • the maximum field of view is 110.00°
  • wide-angle ultra-thin
  • its on-axis and off-axis chromatic aberrations Fully corrected, and has excellent optical characteristics.
  • f12 is the combined focal length of the first lens and the second lens.
  • 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 un objectif optique d'appareil photo (10) comprenant successivement, d'un côté objet à un côté image, une première lentille (L1), une deuxième lentille (L2), une troisième lentille (L3), une quatrième lentille (L4), une cinquième lentille (L5), une sixième lentille (L6) et une septième lentille (L7), les expressions suivantes étant satisfaites : 100,00° ≤ FOV ≤ 135,00° ; -5,00 ≤ f1/f3 ≤ -2,50 ; -20,00 ≤ R9/R10 ≤ -2,00. L'objectif optique d'appareil photo (10) peut présenter une TTL faible tout en offrant des performances d'acquisition d'images élevées.
PCT/CN2019/128579 2019-12-26 2019-12-26 Objectif optique d'appareil photo Ceased WO2021128129A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106324797A (zh) * 2015-06-29 2017-01-11 佳能企业股份有限公司 光学镜头
US20190339490A1 (en) * 2018-05-07 2019-11-07 Calin Technology Co., Ltd. Wide-angle lens assembly
CN110456475A (zh) * 2018-05-08 2019-11-15 宁波舜宇车载光学技术有限公司 光学镜头
CN110456481A (zh) * 2019-08-19 2019-11-15 浙江舜宇光学有限公司 光学成像镜头
CN110542978A (zh) * 2018-05-28 2019-12-06 宁波舜宇车载光学技术有限公司 光学镜头
CN110554475A (zh) * 2018-05-30 2019-12-10 宁波舜宇车载光学技术有限公司 光学镜头

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106324797A (zh) * 2015-06-29 2017-01-11 佳能企业股份有限公司 光学镜头
US20190339490A1 (en) * 2018-05-07 2019-11-07 Calin Technology Co., Ltd. Wide-angle lens assembly
CN110456475A (zh) * 2018-05-08 2019-11-15 宁波舜宇车载光学技术有限公司 光学镜头
CN110542978A (zh) * 2018-05-28 2019-12-06 宁波舜宇车载光学技术有限公司 光学镜头
CN110554475A (zh) * 2018-05-30 2019-12-10 宁波舜宇车载光学技术有限公司 光学镜头
CN110456481A (zh) * 2019-08-19 2019-11-15 浙江舜宇光学有限公司 光学成像镜头

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