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WO2021114240A1 - Lentille optique de caméra - Google Patents

Lentille optique de caméra Download PDF

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Publication number
WO2021114240A1
WO2021114240A1 PCT/CN2019/125212 CN2019125212W WO2021114240A1 WO 2021114240 A1 WO2021114240 A1 WO 2021114240A1 CN 2019125212 W CN2019125212 W CN 2019125212W WO 2021114240 A1 WO2021114240 A1 WO 2021114240A1
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Prior art keywords
lens
curvature
imaging optical
radius
ttl
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PCT/CN2019/125212
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Chinese (zh)
Inventor
郭占利
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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/CN2019/125212 priority Critical patent/WO2021114240A1/fr
Publication of WO2021114240A1 publication Critical patent/WO2021114240A1/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 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 pixel area of the photosensitive device continues to shrink, and the system's requirements for image quality continue to increase, the eight-element lens structure gradually appears in the lens design, and it is common Although the eight-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, in order from the object side to the image side, a first lens having a positive refractive power, and a second lens having a negative refractive power.
  • the focal length of the imaging optical lens is f
  • the focal length of the first lens is f1
  • the focal length of the second lens is f2
  • the refractive index of the fourth lens is n4
  • the on-axis distance from the image side surface of the sixth lens to the object side surface of the seventh lens is d12
  • the on-axis thickness of the seventh lens is d13
  • the following relationship is satisfied: 0.04 ⁇ d12/d13 ⁇ 0.35.
  • the radius of curvature of the object side surface of the second lens is R3, and the radius of curvature of the image side surface of the second lens is R4, and the following relationship is satisfied: 2.00 ⁇ (R3+R4)/(R3-R4) ⁇ 23.00 .
  • 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: -7.01 ⁇ (R1+R2)/(R1-R2) ⁇ -1.25; 0.04 ⁇ d1/TTL ⁇ 0.14.
  • the axial thickness of the second lens is d3, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -190.75 ⁇ f2/f ⁇ -1.88; 0.03 ⁇ d3/TTL ⁇ 0.13.
  • the focal length of the third lens is f3, the radius of curvature of the object side of the third lens is R5, the radius of curvature of the image side of the third lens is R6, and the on-axis thickness of the third lens is d5 ,
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 1.20 ⁇ f3/f ⁇ 6.98; -0.56 ⁇ (R5+R6)/(R5-R6) ⁇ -0.05; 0.03 ⁇ 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: 0.59 ⁇ f4/f ⁇ 45.57; -1.63 ⁇ (R7+R8)/(R7-R8) ⁇ 9.23; 0.02 ⁇ d7/TTL ⁇ 0.06 .
  • 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
  • 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: 3.95 ⁇ f5/f ⁇ 85.01; 0.87 ⁇ (R9+R10)/(R9-R10) ⁇ 15.84; 0.01 ⁇ d9/TTL ⁇ 0.07.
  • 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 relational expression: -10.41 ⁇ f6/f ⁇ -2.06; -11.31 ⁇ (R11+R12)/(R11-R12) ⁇ -1.79; 0.02 ⁇ d11/ TTL ⁇ 0.17.
  • 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 on-axis thickness of the seventh lens is d13
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.57 ⁇ f7/f ⁇ 4.61; -1.72 ⁇ (R13+R14)/(R13-R14) ⁇ -0.21; 0.05 ⁇ d13/TTL ⁇ 0.27.
  • 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: -5.03 ⁇ f8/f ⁇ -0.54; 0.02 ⁇ d15/TTL ⁇ 0.11; 0.53 ⁇ (R15+R16)/(R15-R16) ⁇ 2.10.
  • 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. Specifically, the imaging optical lens 10 includes in order from the object side to the image side: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens. Lens L6, seventh lens L7, and eighth lens L8.
  • An optical element such as an optical filter GF may be provided between the eighth lens L8 and the image plane Si.
  • the first lens L1 has positive refractive power
  • the second lens L2 has negative refractive power
  • the third lens L3 has positive refractive power
  • the fourth lens L4 has positive refractive power
  • the fifth lens L5 has positive refractive power
  • the sixth lens L6 has With negative refractive power
  • the seventh lens L7 has positive refractive power
  • the eighth lens L8 has negative refractive power.
  • 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, 1.92 ⁇ f1/f ⁇ 3.20, which can effectively balance the spherical aberration and field curvature of the system.
  • f the focal length of the first lens L1
  • f1 1.92 ⁇ f1/f ⁇ 3.20
  • the focal length of the second lens L2 is defined as f2, f2 ⁇ 0.00, and the reasonable allocation of the focal length enables the system to have better imaging quality and lower sensitivity.
  • the refractive index of the fourth lens L4 is defined as n4, 1.55 ⁇ n4 ⁇ 1.70, which helps to improve the performance of the optical system within the range of the conditional expression.
  • n4 1.55 ⁇ n4 ⁇ 1.70
  • the imaging optical lens 10 When the focal length of the imaging optical lens 10, the focal length of each lens, and the refractive index of related lenses 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 on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7 is d12
  • the on-axis thickness of the seventh lens L7 is d13
  • 0.04 ⁇ d12/d13 ⁇ 0.35 in the conditional formula
  • the range helps to compress the total length of the optical system and achieve ultra-thinness.
  • 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, 2.00 ⁇ (R3+R4)/(R3-R4) ⁇ 23.00, which stipulates the second 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. Preferably, it satisfies 2.22 ⁇ (R3+R4)/(R3-R4) ⁇ 22.75.
  • 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, -7.01 ⁇ (R1+R2)/(R1-R2) ⁇ -1.25, reasonable control of the first lens L1
  • the shape of the first lens L1 can effectively correct the spherical aberration of the system. Preferably, it satisfies -4.38 ⁇ (R1+R2)/(R1-R2) ⁇ -1.56.
  • the axial thickness of the first lens L1 is d1, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.04 ⁇ d1/TTL ⁇ 0.14, which is beneficial to realize ultra-thinness.
  • 0.06 ⁇ d1/TTL ⁇ 0.11 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: -190.75 ⁇ f2/f ⁇ -1.88.
  • the on-axis thickness of the second lens L2 is d3, which satisfies the following relationship: 0.03 ⁇ d3/TTL ⁇ 0.13, which is beneficial to realize ultra-thinness.
  • 0.05 ⁇ d3/TTL ⁇ 0.10 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: 1.20 ⁇ f3/f ⁇ 6.98.
  • the system has better imaging quality and lower Sensitivity.
  • 1.92 ⁇ f3/f ⁇ 5.59 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: -0.56 ⁇ (R5+R6)/(R5-R6) ⁇ -0.05, 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.
  • it satisfies -0.35 ⁇ (R5+R6)/(R5-R6) ⁇ -0.07.
  • the on-axis thickness of the third lens L3 is d5, which satisfies the following relationship: 0.03 ⁇ d5/TTL ⁇ 0.12, which is beneficial to realize ultra-thinness.
  • 0.05 ⁇ 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 which satisfies the following relationship: 0.59 ⁇ f4/f ⁇ 45.57.
  • the system has better imaging quality and lower Sensitivity.
  • 0.94 ⁇ f4/f ⁇ 36.46 is satisfied.
  • 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: -1.63 ⁇ (R7+R8)/(R7-R8) ⁇ 9.23, the fourth lens is specified
  • -1.02 ⁇ (R7+R8)/(R7-R8) ⁇ 7.38 is satisfied.
  • the on-axis thickness of the fourth lens L4 is d7, which satisfies the following relationship: 0.02 ⁇ d7/TTL ⁇ 0.06, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d7/TTL ⁇ 0.05 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the fifth lens L5 is f5
  • the following relationship is satisfied: 3.95 ⁇ f5/f ⁇ 85.01.
  • the limitation on the fifth lens L5 can effectively make the light angle of the imaging lens smooth and reduce Tolerance sensitivity.
  • 6.32 ⁇ f5/f ⁇ 68.01 is satisfied.
  • 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: 0.87 ⁇ (R9+R10)/(R9-R10) ⁇ 15.84, and 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.
  • 1.40 ⁇ (R9+R10)/(R9-R10) ⁇ 12.68 is satisfied.
  • the on-axis thickness of the fifth lens L5 is d9, which satisfies the following relationship: 0.01 ⁇ d9/TTL ⁇ 0.07, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d9/TTL ⁇ 0.06 is satisfied.
  • 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: -0.41 ⁇ f6/f ⁇ -2.06.
  • the system has better imaging quality and comparison.
  • Low sensitivity Preferably, -6.51 ⁇ f6/f ⁇ -2.58 is satisfied.
  • the curvature radius of the object side surface of the sixth lens L6 is R11
  • the curvature radius of the image side surface of the sixth lens L6 is R12, -11.31 ⁇ (R11+R12)/(R11-R12) ⁇ -1.79, which defines the shape of the sixth lens L6
  • it is helpful to correct the aberration of the off-axis angle of view Preferably, -7.07 ⁇ (R11+R12)/(R11-R12) ⁇ -2.24 is satisfied.
  • the on-axis thickness of the sixth lens L6 is d11, which satisfies the following relationship: 0.02 ⁇ d11/TTL ⁇ 0.17, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d11/TTL ⁇ 0.14 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 relationship: 0.57 ⁇ f7/f ⁇ 4.61.
  • the system has better imaging quality and lower Sensitivity.
  • 0.92 ⁇ f7/f ⁇ 3.69 is satisfied.
  • the curvature radius of the object side surface of the seventh lens is R13, and the curvature radius of the image side surface of the seventh lens is R14, which satisfies the following relationship: -1.72 ⁇ (R13+R14)/(R13-R14) ⁇ -0.21, which is specified This is the shape of the seventh lens L7.
  • -1.72 ⁇ (R13+R14)/(R13-R14) ⁇ -0.21 which is specified
  • This is the shape of the seventh lens L7.
  • it satisfies -1.08 ⁇ (R13+R14)/(R13-R14) ⁇ -0.26.
  • the on-axis thickness of the seventh lens L7 is d13, which satisfies the following relationship: 0.05 ⁇ d13/TTL ⁇ 0.27, which is beneficial to realize ultra-thinness.
  • 0.09 ⁇ d13/TTL ⁇ 0.22 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the eighth lens L8 is f8, which satisfies the following relationship: -5.03 ⁇ f8/f ⁇ -0.54.
  • the reasonable distribution of optical power makes the system have better imaging quality and comparison Low sensitivity.
  • it satisfies -3.14 ⁇ f8/f ⁇ -0.67.
  • the curvature radius R15 of the object side surface of the eighth lens L8 and the curvature radius R16 of the image side surface of the eighth lens L8 satisfy the following relationship: 0.53 ⁇ (R15+R16)/(R15-R16) ⁇ 2.10, the eighth lens L8 is specified
  • the shape 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.
  • 0.85 ⁇ (R15+R16)/(R15-R16) ⁇ 1.68 is satisfied.
  • the on-axis thickness of the eighth lens L8 is d15, which satisfies the following relationship: 0.02 ⁇ d15/TTL ⁇ 0.11, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d15/TTL ⁇ 0.09 is satisfied.
  • the image height of the overall imaging optical lens 10 is IH, which satisfies the following conditional formula: TTL/IH ⁇ 1.92, thereby achieving ultra-thinness.
  • the focal number of the overall imaging optical lens 10 is Fno, and the following conditional formula is satisfied: FNO ⁇ 1.91, thereby realizing a large aperture.
  • 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.
  • Such a design can make the total optical length TTL of the overall imaging optical lens 10 as short as possible, and maintain the characteristics of miniaturization.
  • 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 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, and 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
  • 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 436 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 1.659mm
  • the full-field image height is 2.90mm
  • the diagonal field angle is 84.40°
  • wide-angle ultra-thin
  • 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 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, 587 nm, 546 nm, 486 nm, and 436 nm passes 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 0.753mm
  • the full-field image height is 2.90mm
  • the diagonal field angle is 64.52°
  • 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 of 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 having wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 436 nm pass 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 1.102mm
  • the full-field image height is 2.90mm
  • the diagonal field angle is 60.00°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • Example 1 Example 2
  • Example 3 f1/f 1.94 2.99 3.19 f2 -180.93 -4.02 -199.81 n4 1.57 1.67 1.67 f 3.152 1.430 2.095 f1 6.116 4.271 6.692 f3 7.575 6.659 8.295 f4 95.757 1.685 2.939 f5 24.898 81.046 95.908 f6 -11.687 -7.445 -6.486 f7 3.614 3.914 6.442 f8 -2.548 -3.597 -3.766 f12 5.850 27.870 6.181 Fno 1.900 1.899 1.901

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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, 20, 30), se rapportant au domaine des lentilles optiques et comprenant séquentiellement, d'un côté objet à un côté image, une première lentille (L1) ayant une réfringence positive, une deuxième lentille (L2) ayant une réfringence négative, une troisième lentille (L3) ayant une réfringence positive, une quatrième lentille (L4) ayant une réfringence positive, une cinquième lentille (L5) ayant une réfringence positive, une sixième lentille (L6) ayant une réfringence négative, une septième lentille (L7) ayant une réfringence positive, et une huitième lentille (L8) ayant une réfringence négative, la lentille optique de caméra (10, 20, 30) ayant une longueur focale de f ; la première lentille (L1) ayant une longueur focale de f1 ; la deuxième lentille (L2) ayant une longueur focale de f2 ; la quatrième lentille (L4) ayant un indice de réfraction de n4, qui satisfont les relations suivantes : 1,92≤f1/f≤3,20 ; f2≤0,00 ; 1,55 ≤n4≤1,70. La lentille optique de caméra (10, 20, 30) satisfait les exigences de conception d'une grande ouverture, d'un grand angle et d'être ultra-mince tout en ayant de bonnes performances optiques.
PCT/CN2019/125212 2019-12-13 2019-12-13 Lentille optique de caméra Ceased WO2021114240A1 (fr)

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CN118534619A (zh) * 2024-06-07 2024-08-23 舜宇光学(中山)有限公司 光学镜头
CN118859489A (zh) * 2024-06-20 2024-10-29 江西联创电子有限公司 光学镜头
CN119045161A (zh) * 2024-09-30 2024-11-29 江西联创电子有限公司 光学镜头
CN119065092A (zh) * 2024-09-30 2024-12-03 江西联创电子有限公司 光学镜头
CN119087629A (zh) * 2024-09-30 2024-12-06 江西联创电子有限公司 光学镜头
CN119126339A (zh) * 2024-09-30 2024-12-13 江西联创电子有限公司 光学镜头

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CN118859489A (zh) * 2024-06-20 2024-10-29 江西联创电子有限公司 光学镜头
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CN119065092A (zh) * 2024-09-30 2024-12-03 江西联创电子有限公司 光学镜头
CN119087629A (zh) * 2024-09-30 2024-12-06 江西联创电子有限公司 光学镜头
CN119126339A (zh) * 2024-09-30 2024-12-13 江西联创电子有限公司 光学镜头

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