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WO2021114237A1 - Lentille de caméra optique - Google Patents

Lentille de caméra optique Download PDF

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Publication number
WO2021114237A1
WO2021114237A1 PCT/CN2019/125206 CN2019125206W WO2021114237A1 WO 2021114237 A1 WO2021114237 A1 WO 2021114237A1 CN 2019125206 W CN2019125206 W CN 2019125206W WO 2021114237 A1 WO2021114237 A1 WO 2021114237A1
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Prior art keywords
lens
curvature
radius
imaging optical
ttl
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Chinese (zh)
Inventor
孙雯
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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/CN2019/125206 priority Critical patent/WO2021114237A1/fr
Publication of WO2021114237A1 publication Critical patent/WO2021114237A1/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

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 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.
  • 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, the seventh lens, and the eighth lens; 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 The refractive index of the third lens is n3, and satisfies the following relationship: 3.80 ⁇ f1/f ⁇ 5.00; f2 ⁇ 0.00; 1.55 ⁇ n3 ⁇ 1.70.
  • the radius of curvature of the object side surface of the eighth lens is R15
  • the radius of curvature of the image side surface of the eighth lens is R16, and the following relationship is satisfied: -6.20 ⁇ R15/R16 ⁇ -1.50.
  • the radius of curvature of the object side surface of the first lens is R1
  • the radius of curvature 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: -75.98 ⁇ (R1+R2)/(R1-R2) ⁇ -9.56; 0.05 ⁇ d1/TTL ⁇ 0.20.
  • the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the axial thickness of the second lens is d3, and the focal length of the second lens is f2.
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -19.75 ⁇ f2/f ⁇ -3.53; 5.71 ⁇ (R3+R4)/(R3-R4) ⁇ 25.17; 0.02 ⁇ d3/TTL ⁇ 0.06.
  • 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: 0.70 ⁇ f3/f ⁇ 2.75; -15.91 ⁇ (R5+R6)/(R5-R6) ⁇ -3.43; 0.02 ⁇ d5/TTL ⁇ 0.06.
  • 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: 2.09 ⁇ f4/f ⁇ 8.81; -3.66 ⁇ (R7+R8)/(R7-R8) ⁇ -0.62; 0.04 ⁇ d7/TTL ⁇ 0.12.
  • 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: 0.98 ⁇ f5/f ⁇ 3.44; 0.34 ⁇ (R9+R10)/(R9-R10) ⁇ 1.86; 0.03 ⁇ d9/TTL ⁇ 0.11.
  • 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: -4.65 ⁇ f6/f ⁇ -1.17; -6.86 ⁇ (R11+R12)/(R11-R12) ⁇ -1.95; 0.03 ⁇ d11/ TTL ⁇ 0.10.
  • the focal length of the seventh lens is f7
  • the radius of curvature of the object side of the seventh lens is R13
  • the radius of curvature of the image side of the seventh lens is R14
  • the axial thickness of the seventh lens is d13
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.60 ⁇ f7/f ⁇ 1.97; -4.92 ⁇ (R13+R14)/(R13-R14) ⁇ -1.46; 0.04 ⁇ d13/TTL ⁇ 0.12.
  • 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: -1.69 ⁇ f8/f ⁇ -0.54; 0.14 ⁇ (R15+R16)/(R15-R16) ⁇ 1.07; 0.03 ⁇ d15/TTL ⁇ 0.09.
  • the imaging optical lens according to the present invention has excellent optical characteristics, and has the characteristics of large aperture, wide-angle, and ultra-thin. It is especially suitable for high-pixel CCD, CMOS and other imaging elements. Mobile phone camera lens assembly and WEB camera lens.
  • FIG. 1 is a schematic diagram of the structure of an imaging optical lens according to a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 1;
  • FIG. 3 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 1;
  • FIG. 4 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 1;
  • FIG. 5 is a schematic diagram of the structure of an imaging optical lens according to a second embodiment of the present invention.
  • FIG. 6 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 5;
  • FIG. 7 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 5;
  • FIG. 8 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 5;
  • FIG. 9 is a schematic diagram of the structure of an imaging optical lens according to a third embodiment of the present invention.
  • FIG. 10 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 9;
  • FIG. 11 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 9;
  • FIG. 12 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 9.
  • FIG. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention.
  • the imaging optical lens 10 includes eight lenses.
  • the imaging optical lens 10 includes in order from the object side to the image side: an aperture S1, a first lens L1 with a positive refractive power, a second lens L2 with a negative refractive power, and a third lens with a positive refractive power.
  • An optical element such as an optical filter GF may be provided between the eighth lens L8 and the image plane Si.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the first lens L1 as f1
  • 3.80 ⁇ f1/f ⁇ 5.00 which specifies the ratio of the focal length of the first lens to the total focal length of the system, which can be effective
  • 3.81 ⁇ f1/f ⁇ 4.94 is satisfied.
  • the focal length of the second lens L2 is defined as f2, which satisfies the following relationship: f2 ⁇ 0.00, which specifies the positive and negative of the focal length of the second lens.
  • f2 ⁇ 0.00 which specifies the positive and negative of the focal length of the second lens.
  • the refractive index of the third lens L3 is defined as n3, which satisfies the following relationship: 1.55 ⁇ n3 ⁇ 1.70, which specifies the refractive index of the third lens, which is more conducive to chromatic aberration correction and improves imaging quality.
  • the radius of curvature of the object side surface of the eighth lens L8 is R15
  • the radius of curvature of the image side surface of the eighth lens L8 is R16, which satisfies the following relationship: -6.20 ⁇ R15/R16 ⁇ -1.50, which specifies the shape of the eighth lens .
  • the degree of deflection of the light passing through the lens can be eased, and aberrations can be effectively reduced.
  • it satisfies -6.10 ⁇ R15/R16 ⁇ -1.63.
  • the curvature radius of the object side surface of the first lens L1 is R1
  • the curvature radius of the image side surface of the first lens L1 is R2, which satisfies the following relationship: -75.98 ⁇ (R1+R2)/(R1-R2) ⁇ -9.65, reasonable control of the first lens
  • the shape of a lens enables the first lens to effectively correct the spherical aberration of the system.
  • -47.49 ⁇ (R1+R2)/(R1-R2) ⁇ -11.95 is satisfied.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relational expression: 0.05 ⁇ d1/TTL ⁇ 0.20.
  • 0.08 ⁇ d1/TTL ⁇ 0.16 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: -19.75 ⁇ f2/f ⁇ -3.53.
  • the curvature radius of the object side surface of the second lens L2 is R3, and the curvature radius of the image side surface of the second lens L2 is R4, which satisfies the following relationship: 5.71 ⁇ (R3+R4)/(R3-R4) ⁇ 25.17, stipulates the shape of the second lens L2.
  • R3+R4)/(R3-R4) ⁇ 25.17 stipulates the shape of the second lens L2.
  • it is within the range, as the lens develops toward ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration.
  • 9.14 ⁇ (R3+R4)/(R3-R4) ⁇ 20.14 is satisfied.
  • the on-axis thickness of the second lens L2 is d3, which satisfies the following relational expression: 0.02 ⁇ d3/TTL ⁇ 0.06. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d3/TTL ⁇ 0.05 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the third lens L3 is f3, which satisfies the following relationship: 0.70 ⁇ f3/f ⁇ 2.75.
  • the system has better imaging quality and comparison.
  • Low sensitivity Preferably, 1.11 ⁇ f3/f ⁇ 2.20 is satisfied.
  • the curvature radius of the object side surface of the third lens L3 is R5, and the curvature radius of the image side surface of the third lens L3 is R6, which satisfies the following relationship: -15.91 ⁇ (R5+R6)/(R5-R6) ⁇ -3.43.
  • the shape of the three lens within the range specified by the conditional formula, can ease the deflection of light passing through the lens and effectively reduce aberrations. Preferably, -9.95 ⁇ (R5+R6)/(R5-R6) ⁇ -4.29 is satisfied.
  • the on-axis thickness of the third lens L3 is d5, which satisfies the following relational expression: 0.02 ⁇ d5/TTL ⁇ 0.06. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d5/TTL ⁇ 0.05 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the fourth lens L4 as f4
  • the focal length of the fourth lens L4 which satisfies the following relational expression: 2.09 ⁇ f4/f ⁇ 8.81, which specifies the ratio of the focal length of the fourth lens to the focal length of the system, which is within the range of the conditional expression Helps improve the performance of the optical system.
  • 3.35 ⁇ f4/f ⁇ 7.05 is satisfied.
  • the curvature radius of the object side surface of the fourth lens L4 is R7
  • the curvature radius of the image side surface of the fourth lens L4 is R8, which satisfies the following relationship: -3.66 ⁇ (R7+R8)/(R7-R8) ⁇ -0.62, which is
  • the shape of the fourth lens L4 is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view.
  • it satisfies -2.28 ⁇ (R7+R8)/(R7-R8) ⁇ -0.77.
  • the on-axis thickness of the fourth lens L4 is d7, which satisfies the following relational expression: 0.04 ⁇ d7/TTL ⁇ 0.12. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.06 ⁇ d7/TTL ⁇ 0.09 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: 0.98 ⁇ f5/f ⁇ 3.44
  • the limitation on the fifth lens L5 can effectively make the light angle of the imaging lens gentle , Reduce tolerance sensitivity.
  • 1.57 ⁇ f5/f ⁇ 2.75 is satisfied.
  • the radius of curvature of the object side surface of the fifth lens L5 is R9
  • the radius of curvature of the image side surface of the fifth lens L5 is R10, which satisfies the following relationship: 0.34 ⁇ (R9+R10)/(R9-R10) ⁇ 1.86, which is specified as the fifth
  • the on-axis thickness of the fifth lens L5 is d9, which satisfies the following relational formula: 0.03 ⁇ d9/TTL ⁇ 0.11. Within the range of the conditional formula, it is beneficial to realize ultra-thinness. Preferably, 0.05 ⁇ d9/TTL ⁇ 0.08 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: -4.65 ⁇ f6/f ⁇ -1.17, through the reasonable distribution of optical power, the system has better imaging quality And lower sensitivity.
  • it satisfies -2.90 ⁇ f6/f ⁇ -1.46.
  • 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, which satisfies the following relationship: -6.86 ⁇ (R11+R12)/(R11-R12) ⁇ -1.95.
  • the shape of the six lens L6 is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view.
  • it satisfies -4.29 ⁇ (R11+R12)/(R11-R12) ⁇ -2.44.
  • the on-axis thickness of the sixth lens L6 is d11, which satisfies the following relational formula: 0.03 ⁇ d11/TTL ⁇ 0.10. Within the range of the conditional formula, it is beneficial to realize ultra-thinness. Preferably, 0.05 ⁇ d11/TTL ⁇ 0.08 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: 0.60 ⁇ f7/f ⁇ 1.97.
  • the system has better imaging quality and comparison.
  • Low sensitivity Preferably, 0.96 ⁇ f7/f ⁇ 1.57 is satisfied.
  • the curvature radius of the seventh lens L7 is R13, and the curvature radius of the image side of the seventh lens L7 is R14, which satisfies the following relationship: -4.92 ⁇ (R13+R14)/(R13-R14) ⁇ -1.46, which specifies the first
  • the shape of the seven lens L7 is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view.
  • it satisfies -3.08 ⁇ (R13+R14)/(R13-R14) ⁇ -1.83.
  • the on-axis thickness of the seventh lens L7 is d13, which satisfies the following relational expression: 0.04 ⁇ d13/TTL ⁇ 0.12. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.06 ⁇ d13/TTL ⁇ 0.09 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: -1.69 ⁇ f8/f ⁇ -0.54.
  • the system has better imaging quality And lower sensitivity.
  • -1.05 ⁇ f8/f ⁇ -0.67 is satisfied.
  • the curvature radius of the object side surface of the eighth lens L8 is R15
  • the curvature radius of the image side surface of the eighth lens L8 is R16, which satisfies the following relationship: 0.14 ⁇ (R15+R16)/(R15-R16) ⁇ 1.07
  • the eighth lens is specified
  • the shape of the lens L8 is within the range of conditions, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view.
  • it satisfies 0.22 ⁇ (R15+R16)/(R15-R16) ⁇ 0.86.
  • the on-axis thickness of the eighth lens L8 is d15, which satisfies the following relational formula: 0.03 ⁇ d15/TTL ⁇ 0.09, and satisfies the range of the conditional formula, which is beneficial to realize ultra-thinness.
  • 0.05 ⁇ d15/TTL ⁇ 0.07 is satisfied.
  • the image height of the overall imaging optical lens 10 is IH, which satisfies the following conditional formula: TTL/IH ⁇ 1.45, thereby achieving ultra-thinness.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 1.61. Large aperture, good imaging performance.
  • the wide-angle FOV of the imaging optical lens 10 is greater than or equal to 80°. Achieve wide-angle performance.
  • the imaging optical lens 10 can have good optical performance, and at the same time, it can meet the requirements of large aperture, wide-angle, and ultra-thinness. Design requirements; According to the characteristics of the optical lens 10, the optical lens 10 is particularly suitable for mobile phone camera lens components and WEB camera lenses composed of high-pixel CCD, CMOS and other imaging elements.
  • the imaging optical lens 10 of the present invention will be described below with an example.
  • the symbols described in each example are as follows.
  • the unit of focal length, distance on axis, radius of curvature, thickness on axis, position of inflection point, and position of stagnation point is mm.
  • TTL total optical length (the on-axis distance from the object side of the first lens L1 to the imaging surface), the unit is mm;
  • the object side and/or the image side of the lens can also be provided with inflection points and/or stagnation points to meet high-quality imaging requirements.
  • inflection points and/or stagnation points for specific implementations, refer to the following.
  • Table 1 and Table 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.
  • R The radius of curvature of the optical surface, and the radius of curvature of the center of the lens
  • R1 the radius of curvature of the object side surface of the first lens L1;
  • R2 the radius of curvature of the image side surface of the first lens L1;
  • R3 the radius of curvature of the object side surface of the second lens L2;
  • R4 the radius of curvature of the image side surface of the second lens L2;
  • R5 the radius of curvature of the object side surface of the third lens L3;
  • R6 the radius of curvature of the image side surface of the third lens L3;
  • R7 the radius of curvature of the object side of the fourth lens L4;
  • R8 the radius of curvature of the image side surface of the fourth lens L4;
  • R9 the radius of curvature of the object side surface of the fifth lens L5;
  • R10 the radius of curvature of the image side surface of the fifth lens L5;
  • R11 the radius of curvature of the object side surface of the sixth lens L6;
  • R12 the radius of curvature of the image side surface of the sixth lens L6;
  • R13 the radius of curvature of the object side surface of the seventh lens L7;
  • R14 the radius of curvature of the image side surface of the seventh lens L7;
  • R15 the radius of curvature of the image side surface of the eighth lens L8;
  • R16 the radius of curvature of the image side surface of the eighth lens L8;
  • R17 the radius of curvature of the object side of the optical filter GF
  • R18 the radius of curvature of the image side surface of the optical filter GF
  • d0 the on-axis distance from the aperture S1 to the object side of the first lens L1;
  • d2 the on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;
  • d4 the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;
  • d6 the on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;
  • d10 the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;
  • d11 the on-axis thickness of the sixth lens L6;
  • d12 the on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7;
  • d14 the on-axis distance from the image side surface of the seventh lens L7 to the object side surface of the eighth lens L8;
  • d16 the on-axis distance from the image side surface of the eighth lens L8 to the object side surface of the optical filter GF;
  • d17 the axial thickness of the optical filter GF
  • nd refractive index of d-line
  • nd1 the refractive index of the d-line of the first lens L1;
  • nd2 the refractive index of the d-line of the second lens L2;
  • nd3 the refractive index of the d-line of the third lens L3;
  • nd4 the refractive index of the d-line of the fourth lens L4;
  • nd5 the refractive index of the d-line of the fifth lens L5;
  • nd6 the refractive index of the d-line of the sixth lens L6;
  • nd7 the refractive index of the d-line of the seventh lens L7;
  • nd7 the refractive index of the d-line of the eighth lens L8;
  • ndg the refractive index of the d-line of the optical filter GF
  • vg Abbe number of optical filter GF.
  • Table 2 shows the aspheric surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.
  • k is the conic coefficient
  • A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspherical coefficients.
  • the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1).
  • the present invention is not limited to the aspheric polynomial form represented by the formula (1).
  • Table 3 and Table 4 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 10 of the first embodiment of the present invention.
  • P1R1 and P1R2 represent the object side and image side of the first lens L1 respectively
  • P2R1 and P2R2 represent the object side and image side of the second lens L2 respectively
  • P3R1 and P3R2 represent the object side and image side of the third lens L3 respectively.
  • P4R1, P4R2 represent the object side and image side of the fourth lens L4
  • P5R1, P5R2 represent the object side and image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and image side of the sixth lens L6
  • P7R1 P7R2 represents the object side and image side of the seventh lens L7, respectively
  • P8R1 and P8R2 represent the object side and the image side of the eighth lens L8, respectively.
  • the corresponding data in the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • the data corresponding to the “stationary point position” column is the vertical distance from the stationary point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • FIG. 2 and 3 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 588 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 4.221mm
  • the full-field image height is 6.00mm
  • the diagonal field angle is 80.00°
  • 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 having wavelengths of 656 nm, 588 nm, 546 nm, 486 nm, and 436 nm pass through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 20 of the second embodiment.
  • the second embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 4.22mm
  • the full-field image height is 6.00mm
  • the diagonal field angle is 80.00°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 9 and Table 10 show the design data of the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
  • Table 11 and Table 12 show the inflection point and stagnation point design data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
  • FIG. 10 and 11 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 588 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 4.22mm
  • the full-field image height is 6.00mm
  • the diagonal field angle is 81.94°
  • 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 3.82 4.28 4.87 f2 -7.40 -9.87 -5.29 n3 1.68 1.64 1.57 f 6.754 6.752 6.752 f1 25.799 28.868 32.886 f3 12.051 12.395 9.406 f4 37.845 39.653 28.234 f5 14.405 13.279 15.489 f6 -15.688 -14.199 -11.832 f7 8.862 8.726 8.122 f8 -5.426 -5.596 -5.697 f12 44.210 43.619 131.247 Fno 1.60 1.60 1.60
  • 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

Lentille de caméra optique (10). La lentille de caméra optique (10) comprend, dans l'ordre depuis un côté objet jusqu'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), une septième lentille (L7) et une huitième lentille (L8) ; la longueur focale de la lentille de caméra optique (10) est f, la longueur focale de la première lentille (L1) est f1, la longueur focale de la deuxième lentille (L2) est f2 et l'indice de réfraction de la troisième lentille (L3) est n3 ; et les relations suivantes sont satisfaites : 3,80 ≤ f1/f ≤ 5,00 ; f2 ≤ 0,00 ; et 1,55 ≤ n3 ≤ 1,70. La lentille de caméra optique (10) présente une bonne performance optique et satisfait à des exigences de conception de grande ouverture, de grand angle et d'ultra-minceur.
PCT/CN2019/125206 2019-12-13 2019-12-13 Lentille de caméra optique Ceased WO2021114237A1 (fr)

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PCT/CN2019/125206 WO2021114237A1 (fr) 2019-12-13 2019-12-13 Lentille de caméra optique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/125206 WO2021114237A1 (fr) 2019-12-13 2019-12-13 Lentille de caméra optique

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WO2021114237A1 true WO2021114237A1 (fr) 2021-06-17

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CN118795649A (zh) * 2024-09-11 2024-10-18 江西联创电子有限公司 光学镜头
CN120908972A (zh) * 2025-10-13 2025-11-07 江西联益光学有限公司 光学镜头

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US20050141102A1 (en) * 2003-12-26 2005-06-30 Akio Arakawa Macro lens
CN101893749A (zh) * 2009-05-20 2010-11-24 扬明光学股份有限公司 定焦镜头
CN104730684A (zh) * 2013-12-18 2015-06-24 富士胶片株式会社 摄像透镜和摄像装置
CN105182507A (zh) * 2015-10-28 2015-12-23 东莞市宇瞳光学科技有限公司 一种超高清大像面广角定焦镜头
CN105467566A (zh) * 2016-01-07 2016-04-06 东莞市宇瞳光学科技股份有限公司 一种大孔径广角变焦镜头
CN110456476A (zh) * 2018-05-07 2019-11-15 康达智株式会社 摄像镜头

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Publication number Priority date Publication date Assignee Title
US20020048092A1 (en) * 2000-08-23 2002-04-25 Asahi Kogaku Kogyo Kabushiki Kaisha Intermediate telephoto lens system
US20050141102A1 (en) * 2003-12-26 2005-06-30 Akio Arakawa Macro lens
CN101893749A (zh) * 2009-05-20 2010-11-24 扬明光学股份有限公司 定焦镜头
CN104730684A (zh) * 2013-12-18 2015-06-24 富士胶片株式会社 摄像透镜和摄像装置
CN105182507A (zh) * 2015-10-28 2015-12-23 东莞市宇瞳光学科技有限公司 一种超高清大像面广角定焦镜头
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118795649A (zh) * 2024-09-11 2024-10-18 江西联创电子有限公司 光学镜头
CN120908972A (zh) * 2025-10-13 2025-11-07 江西联益光学有限公司 光学镜头

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