WO2021128139A1 - Lentille optique de caméra - Google Patents

Lentille optique de caméra Download PDF

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Publication number
WO2021128139A1
WO2021128139A1 PCT/CN2019/128593 CN2019128593W WO2021128139A1 WO 2021128139 A1 WO2021128139 A1 WO 2021128139A1 CN 2019128593 W CN2019128593 W CN 2019128593W WO 2021128139 A1 WO2021128139 A1 WO 2021128139A1
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Prior art keywords
lens
imaging optical
ttl
optical lens
curvature
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PCT/CN2019/128593
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English (en)
Chinese (zh)
Inventor
阪口貴之
张磊
崔元善
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/128593 priority Critical patent/WO2021128139A1/fr
Publication of WO2021128139A1 publication Critical patent/WO2021128139A1/fr

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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, from the object side to the image side, in order from the object side to the image side: a first lens with negative refractive power, and a second lens with negative refractive power.
  • Two lenses a third lens with positive refractive power, a fourth lens, a fifth lens, a sixth lens, and a seventh lens with positive refractive power;
  • the maximum field of view of the imaging optical lens is FOV
  • the camera The focal length of the optical lens is f
  • the focal length of the fourth lens is f4
  • the focal length of the seventh lens is f7
  • the radius of curvature of the object side of the second lens is R3
  • the radius of curvature of the image side of the second lens Is R4 and the following relationship is sufficient: 100.00° ⁇ FOV ⁇ 135.00°, 1.00 ⁇ f4/f ⁇ 15.00, -2.00 ⁇ f7/f ⁇ 5.00; -7.00 ⁇ (R3+R4)/(R3-R4) ⁇ -1.00 .
  • the imaging optical lens satisfies the following relational expressions: 1.01 ⁇ f4/f ⁇ 15.00, -1.99 ⁇ f7/f ⁇ 5.00; -6.99 ⁇ (R3+R4)/(R3-R4) ⁇ -1.01.
  • the image side surface of the first lens is concave at the paraxial position; the focal length of the first lens is f1, the curvature radius of the object side surface of the first lens is R1, and the curvature of the image side surface of the first lens
  • the radius is R2
  • the axial thickness of the first lens is d1
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -3.35 ⁇ f1/f ⁇ -0.91; 0.22 ⁇ (R1+R2) /(R1-R2) ⁇ 2.63; 0.02 ⁇ d1/TTL ⁇ 0.06.
  • the imaging optical lens satisfies the following relationship: -2.09 ⁇ f1/f ⁇ -1.13; 0.36 ⁇ (R1+R2)/(R1-R2) ⁇ 2.10; 0.03 ⁇ d1/TTL ⁇ 0.05.
  • the object side surface of the second lens is concave at the paraxial position, and the image side surface is convex at the paraxial position;
  • the focal length of the second lens is f2
  • the on-axis thickness of the second lens is d3
  • the total optical length of the camera optical lens is TTL, and satisfies the following relational expressions: -21.09 ⁇ f2/f ⁇ -2.11, 0.02 ⁇ d3/TTL ⁇ 0.07.
  • the imaging optical lens satisfies the following relationship: -13.18 ⁇ f2/f ⁇ -2.64, 0.03 ⁇ d3/TTL ⁇ 0.05.
  • the object side surface of the third lens is convex at the paraxial position; the focal length of the third lens is f3, the curvature radius of the object side surface of the third lens is R5, and the curvature of the image side surface of the third lens
  • the radius is R6, the total optical length of the camera optical lens is TTL, and it satisfies the following relationship: 0.45 ⁇ f3/f ⁇ 3.76, -9.06 ⁇ (R5+R6)/(R5-R6) ⁇ -0.11; 0.03 ⁇ d5 /TTL ⁇ 0.16.
  • the imaging optical lens satisfies the following relational expressions: 0.72 ⁇ f3/f ⁇ 3.01, -5.66 ⁇ (R5+R6)/(R5-R6) ⁇ -0.14; 0.05 ⁇ d5/TTL ⁇ 0.13.
  • the image side surface of the fourth lens is convex at the paraxial position; the focal length of the fourth lens is f4, the curvature radius of the object side surface of the fourth lens is R7, and the curvature of the image side surface of the fourth lens
  • the radius 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: 0.51 ⁇ f4/f ⁇ 22.48; -1.02 ⁇ (R7+R8)/ (R7-R8) ⁇ 36.86; 0.02 ⁇ d7/TTL ⁇ 0.12.
  • the imaging optical lens satisfies the following relational expression: 0.81 ⁇ f4/f ⁇ 17.99; -0.64 ⁇ (R7+R8)/(R7-R8) ⁇ 29.49; 0.04 ⁇ d7/TTL ⁇ 0.10.
  • 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: 0.55 ⁇ f5/f ⁇ 1.87; -2.91 ⁇ (R9+R10)/(R9-R10) ⁇ 1.94; 0.03 ⁇ d9/TTL ⁇ 0.12 .
  • the imaging optical lens satisfies the following relationship: 0.88 ⁇ f5/f ⁇ 1.50; -1.82 ⁇ (R9+R10)/(R9-R10) ⁇ 1.55; 0.06 ⁇ d9/TTL ⁇ 0.09.
  • 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: -3.52 ⁇ f6/f ⁇ -0.49; -2.41 ⁇ (R11+R12)/(R11-R12) ⁇ 4.00; 0.02 ⁇ d11/TTL ⁇ 0.08.
  • the imaging optical lens satisfies the following relational expressions: -2.20 ⁇ f6/f ⁇ -0.61; -1.51 ⁇ (R11+R12)/(R11-R12) ⁇ 3.20; 0.03 ⁇ d11/TTL ⁇ 0.06.
  • the object side surface of the seventh lens is convex at the paraxial position; the curvature radius of the object side surface of the seventh lens is R13, the curvature radius of the image side surface of the seventh lens is R14, and the curvature radius of the seventh lens is R14.
  • the on-axis thickness is d13, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -14.02 ⁇ (R13+R14)/(R13-R14) ⁇ 2.47, 0.04 ⁇ d13/TTL ⁇ 0.18.
  • the imaging optical lens satisfies the following relationship: -8.76 ⁇ (R13+R14)/(R13-R14) ⁇ 1.97, 0.07 ⁇ d13/TTL ⁇ 0.14.
  • the total optical length TTL of the imaging optical lens is less than or equal to 8.25 mm.
  • the total optical length TTL of the imaging optical lens is less than or equal to 7.87 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 between the seventh lens L7 and the image plane Si.
  • the first lens L1 is made of plastic
  • the second lens L2 is made of plastic
  • the third lens L3 is made of plastic
  • the fourth lens L4 is made of plastic
  • the fifth lens L5 is made of plastic
  • the sixth lens L6 is made of plastic
  • the seventh lens is made of plastic.
  • the lens L7 is made of plastic.
  • FOV maximum field of view of the camera optical lens
  • 100.00° ⁇ FOV ⁇ 135.00° define the field of view of the camera optical lens 10 within the range, can achieve ultra-wide-angle photography and improve user experience.
  • 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: 1.00 ⁇ f4/f ⁇ 15.00, which stipulates the ratio of the focal length of the fourth lens to the focal length of the system, which helps within the scope of the conditional expression Improve the performance of the optical system.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the seventh lens L7 is f7, -2.00 ⁇ f7/f ⁇ 5.00, within the range of the conditional formula, through the reasonable distribution of optical power, the system has better High imaging quality and low sensitivity.
  • 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: -7.00 ⁇ (R3+R4)/(R3-R4) ⁇ -1.00, which specifies the second lens
  • -7.00 ⁇ (R3+R4)/(R3-R4) ⁇ -1.00 which specifies the second 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 of ultra-thin, wide-angle and large aperture. demand.
  • the first lens has a negative refractive power, and its image side surface is concave at the paraxial position.
  • the focal length of the overall imaging optical lens 10 is defined as f, and the focal length of the first lens L1 is f1, -3.35 ⁇ f1/f ⁇ -0.91, which specifies the ratio of the negative refractive power 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 -2.09 ⁇ f1/f ⁇ -1.13.
  • 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 ⁇ 0.06, which is conducive to achieving ultra-thinness.
  • the second lens has a negative refractive power
  • the object side surface is concave at the paraxial position
  • 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 second lens L2 is f2, which satisfies the following relationship: -21.09 ⁇ f2/f ⁇ -2.11.
  • f the focal length of the second lens L2
  • -21.09 ⁇ f2/f ⁇ -2.11 By controlling the negative refractive power of the second lens L2 in a reasonable range, it is beneficial to Correct the aberration of the optical system.
  • 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: 0.02 ⁇ d3/TTL ⁇ 0.07, which is conducive to achieving ultra-thinness.
  • the third lens has positive refractive power, and its object side surface is convex at the paraxial position.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the third lens L3 as f3, 0.45 ⁇ f3/f ⁇ 3.76.
  • the system has better imaging quality and lower Sensitivity.
  • it satisfies 0.72 ⁇ f3/f ⁇ 3.01.
  • 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: -9.06 ⁇ (R5+R6)/(R5-R6) ⁇ -0.11, which specifies the third lens
  • the shape of, within the range specified by the conditional formula, can ease the degree of deflection of light passing through the lens and effectively reduce aberrations.
  • the on-axis thickness of the third lens L3 is d5, which satisfies the following relationship: 0.03 ⁇ d5/TTL ⁇ 0.16, which is beneficial to realize ultra-thinness.
  • the fourth lens has a positive refractive power, and its image side surface is convex at the paraxial position.
  • 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: -1.02 ⁇ (R7+R8)/(R7-R8) ⁇ 36.86, which specifies the fourth lens L4
  • -1.02 ⁇ (R7+R8)/(R7-R8) ⁇ 36.86 which specifies the fourth lens L4
  • 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: 0.02 ⁇ d7/TTL ⁇ 0.12, which is conducive to achieving ultra-thinness.
  • the fifth lens has a positive refractive power.
  • 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: 0.55 ⁇ f5/f ⁇ 1.87.
  • the limitation of the fifth lens L5 can effectively make the light angle of the imaging lens smooth and reduce the tolerance Sensitivity. Preferably, 0.88 ⁇ f5/f ⁇ 1.50.
  • 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: -2.91 ⁇ (R9+R10)/(R9-R10) ⁇ 1.94, which specifies the fifth lens L5
  • -2.91 ⁇ (R9+R10)/(R9-R10) ⁇ 1.94 which specifies the fifth lens L5
  • 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: 0.03 ⁇ d9/TTL ⁇ 0.12, which is conducive to achieving ultra-thinness.
  • 0.06 ⁇ d9/TTL 0.03 ⁇ d9/TTL ⁇ 0.09.
  • the sixth lens has a negative refractive power.
  • 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 relational expression: -3.52 ⁇ f6/f ⁇ -0.49.
  • the system has a relatively high Good imaging quality and low 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: -2.41 ⁇ (R11+R12)/(R11-R12) ⁇ 4.00, the sixth lens is specified
  • the shape of L6 is within the range of conditions, with the development of ultra-thin and wide-angle, it is beneficial 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: 0.02 ⁇ d11/TTL ⁇ 0.08, which is conducive to achieving ultra-thinness.
  • the object side surface of the seventh lens is convex at the paraxial position.
  • 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: -14.02 ⁇ (R13+R14)/(R13-R14) ⁇ 2.47, the sixth lens is specified
  • the shape of L6 is within the range of conditions, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of 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: 0.04 ⁇ d13/TTL ⁇ 0.18, which is conducive to achieving ultra-thinness.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 8.25 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 7.87.
  • 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.
  • 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 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 P1 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 the image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and the image side of the sixth lens L6, respectively.
  • P7R1 and P7R2 respectively represent the object side surface and the image side surface of the seventh lens L7.
  • 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 1.376mm
  • the full-field image height is 3.38mm
  • the maximum field of view of the imaging optical lens is 100.10°, 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.
  • the object side surface of the first lens is a spherical surface.
  • Tables 7 and 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.
  • P1R1 and P1R2 represent the object side and image side of the first lens P1 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 the image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and the image side of the sixth lens L6, respectively.
  • P7R1 and P7R2 respectively represent the object side surface and the image side surface of the seventh lens L7.
  • 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 20.
  • 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 20.
  • FIG. 6 and 7 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 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion of light with a wavelength of 588 nm after passing through the imaging optical lens 20 of the second embodiment.
  • the field curvature S in FIG. 4 is the field curvature in the sagittal direction
  • T is the field curvature in the meridian direction song.
  • the second embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 1.165mm
  • the full-field image height is 3.61mm
  • the maximum field of view of the imaging optical lens is 134.90°, wide-angle, ultra-thin, and 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 according to the third embodiment of the present invention.
  • the object side surface of the first lens is a spherical surface.
  • 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.
  • P1R1 and P1R2 represent the object side and image side of the first lens P1 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 the image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and the image side of the sixth lens L6, respectively.
  • P7R1 and P7R2 respectively represent the object side surface and the image side surface of the seventh lens L7.
  • 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 30.
  • 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 30.
  • FIG. 10 and 11 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 30 of the third embodiment.
  • FIG. 10 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 field curvature S in FIG. 11 is the field curvature in the sagittal direction, and T is the field curvature in the meridian direction song.
  • the entrance pupil diameter of the imaging optical lens is 1.165mm
  • the full-field image height is 3.62mm
  • the maximum field of view of the imaging optical lens is 117.50°, wide-angle, ultra-thin, and its axis and axis
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • Example 1 Example 2
  • Example 3 f 3.852 3.263 3.263 f1 -5.571 -4.432 -5.461 f2 -40.629 -10.324 -11.790 f3 9.654 2.953 4.056 f4 3.891 48.915 26.106 f5 4.800 3.925 3.579 f6 -6.780 -3.420 -2.405 f7 -7.625 16.285 4.898 f12 -4.900 -2.967 -3.612 FNO 2.80 2.80 2.80 FOV 100.10 134.90 117.50 f4/f 1.01 14.99 8.00 f7/f -1.98 4.99 1.50 (R3+R4)/(R3-R4) -6.98 -1.02 -4.00

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

Abstract

L'invention concerne une lentille optique de caméra (10) se rapportant au domaine des lentilles optiques. La lentille optique de caméra (10) comprend de manière séquentielle, d'un côté objet à un côté image : une première lentille (L1) présentant une réfringence négative, une deuxième lentille (L2) présentant une réfringence négative, une troisième lentille (L3) présentant une réfringence positive, une quatrième lentille (L4) présentant une réfringence positive, une cinquième lentille (L5), une sixième lentille (L6) et une septième lentille (L7) qui satisfont les relations suivantes : 100,00° ≤ FOV ≤ 135,00°, 1,00 ≤ f4/f ≤ 15,00, -2,00 ≤ f7/f ≤ 5,00 et -7,00 ≤ (R3+R4)/(R3-R4) ≤ -1,00. La lentille optique de caméra (10) peut obtenir à la fois une performance d'imagerie élevée et une TTL faible.
PCT/CN2019/128593 2019-12-26 2019-12-26 Lentille optique de caméra WO2021128139A1 (fr)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US11982875B2 (en) 2020-05-29 2024-05-14 Largan Precision Co., Ltd. Image capturing lens assembly, imaging apparatus and electronic device

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US4452512A (en) * 1979-09-18 1984-06-05 Olympus Optical Co., Ltd. Wide angle zoom lens system
US6236518B1 (en) * 1998-12-24 2001-05-22 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system
CN109839730A (zh) * 2019-03-26 2019-06-04 厦门力鼎光电股份有限公司 一种光学成像镜头
CN110023809A (zh) * 2016-11-28 2019-07-16 柯尼卡美能达株式会社 摄像光学系统、透镜单元以及摄像装置
CN110045486A (zh) * 2019-05-14 2019-07-23 厦门力鼎光电股份有限公司 一种光学成像镜头
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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452512A (en) * 1979-09-18 1984-06-05 Olympus Optical Co., Ltd. Wide angle zoom lens system
US6236518B1 (en) * 1998-12-24 2001-05-22 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system
CN110023809A (zh) * 2016-11-28 2019-07-16 柯尼卡美能达株式会社 摄像光学系统、透镜单元以及摄像装置
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
CN109839730A (zh) * 2019-03-26 2019-06-04 厦门力鼎光电股份有限公司 一种光学成像镜头
CN110045486A (zh) * 2019-05-14 2019-07-23 厦门力鼎光电股份有限公司 一种光学成像镜头

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11982875B2 (en) 2020-05-29 2024-05-14 Largan Precision Co., Ltd. Image capturing lens assembly, imaging apparatus and electronic device

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