WO2021114235A1 - Lentille de caméra optique - Google Patents

Lentille de caméra optique Download PDF

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Publication number
WO2021114235A1
WO2021114235A1 PCT/CN2019/125204 CN2019125204W WO2021114235A1 WO 2021114235 A1 WO2021114235 A1 WO 2021114235A1 CN 2019125204 W CN2019125204 W CN 2019125204W WO 2021114235 A1 WO2021114235 A1 WO 2021114235A1
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Prior art keywords
lens
imaging optical
curvature
radius
ttl
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PCT/CN2019/125204
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English (en)
Chinese (zh)
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陈佳
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/125204 priority Critical patent/WO2021114235A1/fr
Publication of WO2021114235A1 publication Critical patent/WO2021114235A1/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
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components

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.
  • Two lenses a third lens with negative refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, a sixth lens with negative refractive power, a seventh lens with positive refractive power, and The eighth lens with negative refractive power;
  • the focal length of the imaging optical lens is f
  • the focal length of the third lens is f3
  • 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
  • the fourth The on-axis thickness of the lens is d7
  • the on-axis distance from the image side of the fourth lens to the object side of the fifth lens is d8
  • the radius of curvature of the object side of the sixth lens is R11
  • the sixth lens has a curvature radius of R11.
  • the radius of curvature of the mirror image side is R12, and it satisfies the following relationship: -8.00 ⁇ f3/f ⁇ -3.50; 7.00 ⁇ (R3+R4)/(R3-R4) ⁇ 20.00; 3.00 ⁇ d7/d8 ⁇ 8.00; 5.00 ⁇ (R11+R12)/(R11-R12) ⁇ 20.00.
  • the focal length of the fourth lens is f4, and satisfies the following relationship: -4.50 ⁇ f4/f ⁇ -2.50.
  • the focal length of the first lens is f1
  • the radius of curvature of the object side of the first lens is R1
  • the radius of curvature of the image side of the first lens is R2
  • the on-axis thickness of the first lens is d1
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.55 ⁇ f1/f ⁇ 1.75; -3.11 ⁇ (R1+R2)/(R1-R2) ⁇ -1.02; 0.06 ⁇ d1/TTL ⁇ 0.19.
  • the focal length of the second lens is f2
  • the axial thickness of the second lens is d3
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -53.92 ⁇ f2/f ⁇ - 6.96; 0.02 ⁇ d3/TTL ⁇ 0.05.
  • the radius of curvature of the object side surface of the third lens is R5
  • the radius of curvature of the image side surface of the third lens is R6
  • the axial thickness of the third lens is d5
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: 2.19 ⁇ (R5+R6)/(R5-R6) ⁇ 21.30; 0.01 ⁇ d5/TTL ⁇ 0.04.
  • the radius of curvature of the object side surface of the fourth lens is R7
  • the radius of curvature of the image side surface of the fourth lens is R8
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.94 ⁇ (R7 +R8)/(R7-R8) ⁇ 3.77; 0.02 ⁇ d7/TTL ⁇ 0.08.
  • 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: 1.17 ⁇ f5/f ⁇ 4.05; 0.11 ⁇ (R9+R10)/(R9-R10) ⁇ 0.39; 0.04 ⁇ d9/TTL ⁇ 0.13.
  • the focal length of the sixth lens is f6, the on-axis thickness of the sixth lens is d11, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -26.36 ⁇ f6/f ⁇ - 2.19; 0.02 ⁇ d11/TTL ⁇ 0.07.
  • 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: 0.42 ⁇ f7/f ⁇ 1.30; -0.65 ⁇ (R13+R14)/(R13-R14) ⁇ -0.21; 0.04 ⁇ d13/TTL ⁇ 0.13.
  • 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: -1.34 ⁇ f8/f ⁇ -0.40; -0.04 ⁇ (R15+R16)/(R15-R16) ⁇ 0.03; 0.04 ⁇ d15/TTL ⁇ 0.14.
  • 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. 13 is a schematic diagram of the structure of an imaging optical lens according to a fourth embodiment of the present invention.
  • FIG. 14 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 13;
  • FIG. 15 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 13;
  • FIG. 16 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 13.
  • 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 negative refractive power
  • the fourth lens L4 has negative 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 imaging optical lens 10 is defined as f
  • the focal length of the third lens L3 is defined as f3, which satisfies the following relationship: -8.00 ⁇ f3/f ⁇ -3.50, which specifies the third
  • the ratio of the focal length of the lens L3 to the focal length of the imaging optical lens 10 can effectively balance the spherical aberration and field curvature of the system.
  • the curvature radius of the object side surface of the second lens as R3, and the curvature radius of the image side surface of the second lens as R4, which satisfies the following relationship: 7.00 ⁇ (R3+R4)/(R3-R4) ⁇ 20.00, which specifies The shape of the second lens L2, within the range specified by the conditional formula, can relax the degree of deflection of the light passing through the lens and effectively reduce aberrations. Preferably, it satisfies 7.05 ⁇ (R3+R4)/(R3-R4) ⁇ 19.95.
  • the on-axis thickness of the fourth lens is defined as d7, and the on-axis distance from the image side surface of the fourth lens to the object side surface of the fifth lens is d8, which satisfies the following relationship: 3.00 ⁇ d7/d8 ⁇ 8.00,
  • the ratio of the thickness of the fourth lens to the air space between the fourth and fifth lenses is specified, which helps to compress the total length of the optical system within the scope of the conditional formula, and achieves an ultra-thin effect.
  • 3.32 ⁇ d7/d8 ⁇ 7.97 is satisfied.
  • the radius of curvature of the object side surface of the sixth lens as R11
  • the radius of curvature of the image side surface of the sixth lens as R12
  • the shape of the sixth lens L6 contributes to improving the performance of the optical system within the range of the conditional expression.
  • 5.04 ⁇ (R11+R12)/(R11-R12) ⁇ 19.97 is satisfied.
  • the focal length of the fourth lens is defined as f4, which satisfies the following relationship: -4.50 ⁇ f4/f ⁇ -2.50, which specifies the ratio of the focal length of the fourth lens L4 to the focal length of the imaging optical lens 10. Distribution makes the system have better imaging quality and lower sensitivity. Preferably, it satisfies -4.30 ⁇ f4/f ⁇ -2.51.
  • the focal length of the imaging optical lens 10 is defined as f
  • the focal length of the first lens is f1
  • the following relationship is satisfied: 0.55 ⁇ f1/f ⁇ 1.75, which specifies the ratio of the positive refractive power of the first lens L1 to the overall focal length .
  • the first lens has an appropriate positive refractive power, which is beneficial to reduce system aberrations, and at the same time, is beneficial to the development of ultra-thin and wide-angle lenses.
  • 0.88 ⁇ f1/f ⁇ 1.40 is satisfied.
  • the curvature radius of the object side surface of the first lens L1 is R1
  • the curvature radius of the image side surface of the first lens L1 is R2, which satisfies the following relationship: -3.11 ⁇ (R1+R2)/(R1-R2) ⁇ -1.02
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.06 ⁇ d1/TTL ⁇ 0.19, which is beneficial to realize ultra-thinness.
  • 0.09 ⁇ d1/TTL ⁇ 0.15 is satisfied.
  • the focal length of the imaging optical lens 10 as f
  • the focal length of the second lens L2 as f2
  • f2 the focal length of the second lens L2
  • -53.92 ⁇ f2/f ⁇ -6.96 by controlling the negative power of the second lens L2
  • it is helpful to correct the aberration of the optical system Preferably, -33.70 ⁇ f2/f ⁇ -8.70 is satisfied.
  • the on-axis thickness of the second lens L2 is d3, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.02 ⁇ d3/TTL ⁇ 0.05, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d3/TTL ⁇ 0.04 is satisfied.
  • the curvature radius of the object side surface of the third lens L3 is R5
  • the curvature radius of the image side surface of the third lens L3 is R6, which satisfies the following relationship: 2.19 ⁇ (R5+R6)/(R5-R6) ⁇ 21.30, which specifies
  • the shape of the third lens within the range specified by the conditional formula, can ease the degree of deflection of light passing through the lens and effectively reduce aberrations.
  • 3.50 ⁇ (R5+R6)/(R5-R6) ⁇ 17.04 is satisfied.
  • the axial thickness of the third lens L3 is d5, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.01 ⁇ d5/TTL ⁇ 0.04, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d5/TTL ⁇ 0.03 is satisfied.
  • the curvature radius of the object side surface of the fourth lens L4 is defined as R7, and the curvature radius of the image side surface of the fourth lens L4 is R8, which satisfies the following relationship: 0.94 ⁇ (R7+R8)/(R7-R8) ⁇ 3.77, which is specified It is the shape of the fourth lens L4. When it 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. Preferably, 1.50 ⁇ (R7+R8)/(R7-R8) ⁇ 3.02 is satisfied.
  • the axial thickness of the fourth lens L4 is d7, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.02 ⁇ d7/TTL ⁇ 0.08, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d7/TTL ⁇ 0.06 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the fifth lens L5 as f5
  • the limitation on the fifth lens L5 can effectively make the light of the imaging lens
  • the angle is gentle, reducing tolerance sensitivity.
  • 1.87 ⁇ f5/f ⁇ 3.24 is satisfied.
  • the curvature radius of the object side surface of the fifth lens L5 is R9
  • the curvature radius of the image side surface of the fifth lens L5 is R10, which satisfies the following relationship: 0.11 ⁇ (R9+R10)/(R9-R10) ⁇ 0.39, which is
  • 0.11 ⁇ (R9+R10)/(R9-R10) ⁇ 0.39 which is
  • 0.17 ⁇ (R9+R10)/(R9-R10) ⁇ 0.31 is satisfied.
  • the axial thickness of the fifth lens L5 is d9, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.04 ⁇ d9/TTL ⁇ 0.13, which is beneficial to achieve ultra-thinness.
  • 0.06 ⁇ d9/TTL ⁇ 0.10 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the sixth lens L6 as f6, which satisfies the following relationship: -26.36 ⁇ f6/f ⁇ -2.19.
  • the reasonable distribution of optical power makes the system better The imaging quality and lower sensitivity.
  • -16.47 ⁇ f6/f ⁇ -2.74 is satisfied.
  • the axial thickness of the sixth lens L6 is d11, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.02 ⁇ d11/TTL ⁇ 0.07, which is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d11/TTL ⁇ 0.06 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the seventh lens L7 as f7
  • the system has better imaging Quality and low sensitivity.
  • 0.66 ⁇ f7/f ⁇ 1.04 is satisfied.
  • the curvature radius of the object side surface of the seventh lens L7 is R13
  • the curvature radius of the image side surface of the seventh lens L7 is R14, which satisfies the following relationship: -0.65 ⁇ (R13+R14)/(R13-R14) ⁇ -0.21
  • the shape of the seventh lens L7 is specified.
  • the condition 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.
  • -0.41 ⁇ (R13+R14)/(R13-R14) ⁇ -0.26 is satisfied.
  • the axial thickness of the seventh lens L7 is d13, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.04 ⁇ d13/TTL ⁇ 0.13, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d13/TTL ⁇ 0.11 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the eighth lens L8 as f8
  • f8 the focal length of the eighth lens L8
  • -1.34 ⁇ f8/f ⁇ -0.40 the focal length of the eighth lens L8
  • the reasonable distribution of the optical power makes the system better The imaging quality and lower sensitivity.
  • -0.84 ⁇ f8/f ⁇ -0.50 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: -0.04 ⁇ (R15+R16)/(R15-R16) ⁇ 0.03, which is specified It is the shape of the eighth lens L8.
  • -0.02 ⁇ (R15+R16)/(R15-R16) ⁇ 0.02 is satisfied.
  • the axial thickness of the eighth lens L8 is d15, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.04 ⁇ d15/TTL ⁇ 0.14, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d15/TTL ⁇ 0.11 is satisfied.
  • the image height of the overall imaging optical lens 10 is IH, which satisfies the following conditional formula: TTL/IH ⁇ 1.52, thereby achieving ultra-thinness.
  • the aperture Fno of the imaging optical lens 10 is less than or equal to 1.61. Large aperture, good imaging performance.
  • the field of view FOV of the imaging optical lens 10 is greater than or equal to 79°, thereby achieving a wide angle.
  • the imaging optical lens 10 can meet the design requirements of large aperture, wide-angle, and ultra-thin design while having good optical performance. According to the characteristics of the optical lens 10, the optical lens 10 is particularly suitable for high-end cameras. Mobile phone camera lens assembly and WEB camera lens composed of CCD, CMOS and other imaging elements for pixels.
  • 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;
  • nd8 the refractive index of the d-line of the eighth lens L8;
  • ndg the refractive index of the d-line of the optical filter GF
  • vg Abbe number of optical filter GF.
  • Table 2 shows the aspheric surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.
  • k is the conic coefficient
  • A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspherical coefficients.
  • the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1).
  • the present invention is not limited to the aspheric polynomial form represented by the formula (1).
  • Table 3 and Table 4 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 10 of the first embodiment of the present invention.
  • P1R1 and P1R2 represent the object side and image side of the first lens L1 respectively
  • P2R1 and P2R2 represent the object side and image side of the second lens L2 respectively
  • P3R1 and P3R2 represent the object side and image side of the third lens L3 respectively.
  • P4R1, P4R2 represent the object side and image side of the fourth lens L4
  • P5R1, P5R2 represent the object side and image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and image side of the sixth lens L6
  • P7R1 P7R2 represents the object side and image side of the seventh lens L7, respectively
  • P8R1 and P8R2 represent the object side and the image side of the eighth lens L8, respectively.
  • the corresponding data in the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • the data corresponding to the “stationary point position” column is the vertical distance from the stationary point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • FIG. 2 and 3 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 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 17 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 each conditional expression.
  • the entrance pupil diameter of the imaging optical lens is 3.437mm
  • the full-field image height is 4.636mm
  • the diagonal field angle is 79.48°, 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 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 3.433mm
  • the full-field image height is 4.636mm
  • the diagonal field angle is 79.51°
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
  • Table 11 and Table 12 show the inflection point and stagnation point design data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
  • P1R2 1 1.485 To To P2R1 0 To To To P2R2 0 To To To P3R1 2 0.745 1.235 To P3R2 0 To To To P4R1 1 0.315 To To P4R2 1 0.515 To To P5R1 3 0.405 1.445 1.715 P5R2 1 1.695 To To P6R1 2 0.595 2.005 To P6R2 2 0.575 1.965 To P7R1 2 0.775 2.345 To P7R2 1 2.705 To To P8R1 1 1.875 To To P8R2 3 0.645 3.605 4.045
  • 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.
  • Table 17 lists the numerical values corresponding to each conditional expression in this embodiment according to the above-mentioned conditional expressions. Obviously, the imaging optical system of this embodiment satisfies the above-mentioned conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 3.401mm
  • the full-field image height is 4.636mm
  • 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 fourth 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 13 and Table 14 show design data of the imaging optical lens 40 according to the fourth embodiment of the present invention.
  • Table 14 shows the aspheric surface data of each lens in the imaging optical lens 40 according to the fourth embodiment of the present invention.
  • Table 15 and Table 16 show the inflection point and stagnation point design data of each lens in the imaging optical lens 40 of the fourth embodiment of the present invention.
  • FIG. 14 and 15 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 40 of the fourth embodiment.
  • Fig. 16 shows a schematic diagram of field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 40 of the fourth embodiment.
  • Table 17 lists the numerical values corresponding to each conditional expression in this embodiment according to the above-mentioned conditional expressions. Obviously, the imaging optical system of this embodiment satisfies the above-mentioned conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 3.305mm
  • the full-field image height is 4.636mm
  • 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.
  • Example 1 Example 2
  • Example 3 Example 4 f3/f -6.30 -8.00 -3.51 -6.15 (R3+R4)/(R3-R4) 8.11 7.09 19.90 7.75 d7/d8 4.88 3.08 7.93 3.64 (R11+R12)/(R11-R12) 6.93 5.08 19.93 5.96 f 5.500 5.493 5.442 5.287 f1 6.143 6.075 6.144 6.169 f2 -64.257 -57.372 -146.712 -61.592 f3 -34.659 -43.924 -19.075 -33.480 f4 -15.465 -13.839 -15.843 -22.275 f5 13.586 12.874 14.691 13.638 f6 -20.969 -18.040 -71.715 -18.340 f7 4.580 4.566 4.646 4.579 f8 -3.514 -3.671 -3.268 -3.554 f12 6.635 6.630 6.306
  • Fno is the aperture F number of the imaging optical lens.

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

Abstract

L'invention concerne une lentille de caméra optique (10), comprenant : d'un côté objet à un côté image séquentiellement, une première lentille (L1) ayant une puissance de réfraction positive, une deuxième lentille (L2) ayant une puissance de réfraction négative, une troisième lentille (L3) ayant une puissance de réfraction négative, une quatrième lentille (L4) ayant une puissance de réfraction négative, une cinquième lentille (L5) ayant une puissance de réfraction positive, une sixième lentille (L6) ayant une puissance de réfraction négative, une septième lentille (L7) ayant une puissance de réfraction positive et une huitième lentille (L8) ayant une puissance de réfraction négative ; et les expressions relationnelles suivantes sont satisfaites : -8,00≤f3/f≤-3,50, 7,00≤(R3+R4)/(R3-R4)≤20,00, 3,00≤d7/d8≤8,00, and 5,00≤(R11+R12)/(R11-R12)≤20,00. La lentille de caméra optique (10) satisfait aux exigences de conception d'une grande ouverture, d'un grand angle et d'une ultra-minceur.
PCT/CN2019/125204 2019-12-13 2019-12-13 Lentille de caméra optique WO2021114235A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN114545606A (zh) * 2022-03-16 2022-05-27 舜宇光学(中山)有限公司 镜头

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CN106443986A (zh) * 2015-08-11 2017-02-22 大立光电股份有限公司 影像撷取镜片组、取像装置及电子装置
US20170329108A1 (en) * 2015-12-21 2017-11-16 Kantatsu Co., Ltd. Imaging lens
US20190101729A1 (en) * 2017-09-29 2019-04-04 Genius Electronic Optical (Xiamen) Co., Ltd. Optical imaging lens
CN110412749A (zh) * 2019-08-28 2019-11-05 浙江舜宇光学有限公司 光学成像镜头

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Publication number Priority date Publication date Assignee Title
CN106443986A (zh) * 2015-08-11 2017-02-22 大立光电股份有限公司 影像撷取镜片组、取像装置及电子装置
US20170329108A1 (en) * 2015-12-21 2017-11-16 Kantatsu Co., Ltd. Imaging lens
US20190101729A1 (en) * 2017-09-29 2019-04-04 Genius Electronic Optical (Xiamen) Co., Ltd. Optical imaging lens
CN110412749A (zh) * 2019-08-28 2019-11-05 浙江舜宇光学有限公司 光学成像镜头

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114545606A (zh) * 2022-03-16 2022-05-27 舜宇光学(中山)有限公司 镜头

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