WO2021114233A1 - Lentille optique photographique - Google Patents

Lentille optique photographique Download PDF

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Publication number
WO2021114233A1
WO2021114233A1 PCT/CN2019/125197 CN2019125197W WO2021114233A1 WO 2021114233 A1 WO2021114233 A1 WO 2021114233A1 CN 2019125197 W CN2019125197 W CN 2019125197W WO 2021114233 A1 WO2021114233 A1 WO 2021114233A1
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Prior art keywords
lens
imaging optical
curvature
radius
ttl
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PCT/CN2019/125197
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English (en)
Chinese (zh)
Inventor
葛诗雨
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/125197 priority Critical patent/WO2021114233A1/fr
Publication of WO2021114233A1 publication Critical patent/WO2021114233A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Definitions

  • the present invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal equipment such as smart phones and digital cameras, as well as imaging devices such as monitors and PC lenses.
  • the photosensitive devices of general photographic lenses are nothing more than photosensitive 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.
  • 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 positive refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive 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 fourth lens is f4
  • the Abbe number of the first lens is v1
  • the Abbe number of the second lens is v2, and the following relationship is satisfied: 2.90 ⁇ v1/v2 ⁇ 4.00; 2.00 ⁇ f4/f ⁇ 6.00.
  • 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, and the following relationship is satisfied: -20.00 ⁇ (R5+R6)/(R5-R6) ⁇ -3.00.
  • the on-axis distance of the sixth lens is d11
  • the on-axis distance from the image side surface of the sixth lens to the object side surface of the seventh lens is d12, and the following relationship is satisfied: 2.00 ⁇ d12/d11 ⁇ 4.00.
  • 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: 0.47 ⁇ f1/f ⁇ 1.50; -4.83 ⁇ (R1+R2)/(R1-R2) ⁇ -1.41; 0.05 ⁇ d1/TTL ⁇ 0.17.
  • the focal length of the second lens is f2
  • 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 axial thickness of the second lens is d3, so
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -7.35 ⁇ f2/f ⁇ -2.20; 1.29 ⁇ (R3+R4)/(R3-R4) ⁇ 4.74; 0.02 ⁇ d3/TTL ⁇ 0.06.
  • the focal length of the third lens is f3, the axial thickness of the third lens is d5, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 2.69 ⁇ f3/f ⁇ 39.68; 0.02 ⁇ d5/TTL ⁇ 0.06.
  • 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
  • the axial thickness of the fourth lens is d7
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: 0.26 ⁇ (R7+R8)/(R7-R8) ⁇ 3.06; 0.03 ⁇ d7/TTL ⁇ 0.09.
  • 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: -6.40 ⁇ f5/f ⁇ -1.55; -7.70 ⁇ (R9+R10)/(R9-R10) ⁇ 0.25; 0.02 ⁇ d9/TTL ⁇ 0.06.
  • 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: 1.92 ⁇ f6/f ⁇ 8.20; -19.04 ⁇ (R11+R12)/(R11-R12) ⁇ -0.65; 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: 1.36 ⁇ f7/f ⁇ 10.73; -27.26 ⁇ (R13+R14)/(R13-R14) ⁇ -2.76; 0.04 ⁇ d13/TTL ⁇ 0.16.
  • 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 negative refractive power
  • the sixth lens L6 has With positive refractive power
  • the seventh lens L7 has positive refractive power
  • the eighth lens L8 has negative refractive power.
  • the Abbe number of the first lens L1 is defined as v1
  • the Abbe number of the second lens L2 is defined as v2, which satisfies the following relationship: 2.90 ⁇ v1/v2 ⁇ 4.00, which specifies the first
  • the ratio of the Abbe number of the second lens in this range is more conducive to the development of ultra-thinness, and at the same time, it is conducive to correcting aberrations.
  • it satisfies 2.93 ⁇ v1/v2 ⁇ 3.98.
  • the focal length of the imaging optical lens 10 is defined as f, and the focal length of the fourth lens L4 is f4, which satisfies the following relationship: 2.00 ⁇ f4/f ⁇ 6.00, which specifies the ratio of the focal length of the fourth lens to the total focal length.
  • the reasonable distribution of focal power makes the system have better imaging quality and lower sensitivity.
  • 2.02 ⁇ f4/f ⁇ 6.00 is satisfied.
  • the curvature radius of the object side surface of the third lens L3 is defined as R5, and the curvature radius of the image side surface of the third lens L3 is defined as R6, which satisfies the following relationship: -20.00 ⁇ (R5+R6)/(R5-R6) ⁇ - 3.00, the shape of the third lens is specified.
  • the degree of deflection of light passing through the lens can be eased, and aberrations can be effectively reduced.
  • it satisfies -19.98 ⁇ (R5+R6)/(R5-R6) ⁇ -3.03.
  • the on-axis distance of the sixth lens L6 as d11
  • the on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7 as d12
  • d12 which satisfies the following relationship: 2.00 ⁇ d12/d11 ⁇ 4.00
  • 2.00 ⁇ d12/d11 ⁇ 4.00 which specifies the ratio of the air space between the sixth and seventh lenses to the thickness of the sixth lens, which helps to compress the total length of the optical system within the range of the conditional formula and achieves ultra-thinness.
  • 2.01 ⁇ d12/d11 ⁇ 4.00 is satisfied.
  • 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: 0.47 ⁇ f1/f ⁇ 1.50, which specifies the ratio of the positive refractive power of the first lens L1 to the overall focal length
  • the first lens has a proper 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.
  • 0.75 ⁇ f1/f ⁇ 1.20 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: -4.83 ⁇ (R1+R2)/(R1-R2) ⁇ -1.41
  • 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: 0.05 ⁇ d1/TTL ⁇ 0.17.
  • it is beneficial to achieve ultra-thinness Preferably, 0.08 ⁇ d1/TTL ⁇ 0.14 is satisfied.
  • the focal length of the imaging optical lens 10 is defined as f
  • the focal length of the second lens L2 is f2
  • the following relationship is satisfied: -7.35 ⁇ f2/f ⁇ -2.20, by controlling the negative power of the second lens L2 In a reasonable range, it is helpful to correct the aberration of the optical system.
  • it satisfies -4.60 ⁇ f2/f ⁇ -2.75.
  • 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: 1.29 ⁇ (R3+R4)/(R3-R4) ⁇ 4.74, which is specified
  • R3+R4/(R3-R4) ⁇ 4.74 which is specified
  • the shape of the second lens L2 is within the range, as the lens becomes ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration.
  • 2.06 ⁇ (R3+R4)/(R3-R4) ⁇ 3.79 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 ⁇ 0.06. Within the range of the conditional expression, it is beneficial to achieve ultra-thinness . Preferably, 0.03 ⁇ d3/TTL ⁇ 0.05 is satisfied.
  • the focal length of the third lens L3 is defined as f3 and satisfies the following relationship: 2.69 ⁇ f3/f ⁇ 39.68.
  • the system has better imaging quality and lower sensitivity.
  • 4.31 ⁇ f3/f ⁇ 31.74 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: 0.02 ⁇ d5/TTL ⁇ 0.06. Within the range of the conditional expression, it is beneficial to achieve ultra-thinness . Preferably, 0.03 ⁇ d5/TTL ⁇ 0.05 is satisfied.
  • R7 the radius of curvature of the object side surface of the fourth lens L4 as R7
  • R8 the radius of curvature of the image side surface of the fourth lens L4
  • 0.26 ⁇ (R7+R8)/(R7-R8) ⁇ 3.06 which is specified It is the shape of the fourth lens L4.
  • 0.41 ⁇ (R7+R8)/(R7-R8) ⁇ 2.45 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: 0.03 ⁇ d7/TTL ⁇ 0.09. Within the range of the conditional expression, it is beneficial to achieve ultra-thinness . Preferably, 0.05 ⁇ d7/TTL ⁇ 0.08 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 imaging lens
  • the light angle is gentle, reducing tolerance sensitivity.
  • it satisfies -4.00 ⁇ f5/f ⁇ -1.94.
  • the radius of curvature of the object side surface of the fifth lens L5 is R9, and the radius of curvature of the image side surface of the fifth lens L5 is R10, which satisfies the following relationship: -7.70 ⁇ (R9+R10)/(R9-R10) ⁇ 0.25, which is specified It is the shape of the fifth lens L5.
  • R9 The radius of curvature of the object side surface of the fifth lens L5
  • R10 which satisfies the following relationship: -7.70 ⁇ (R9+R10)/(R9-R10) ⁇ 0.25, which is specified It is the shape of the fifth lens L5.
  • -4.82 ⁇ (R9+R10)/(R9-R10) ⁇ 0.20 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: 0.02 ⁇ d9/TTL ⁇ 0.06. Within the range of the conditional expression, it is beneficial to achieve ultra-thinness . Preferably, 0.03 ⁇ d9/TTL ⁇ 0.05 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: 1.92 ⁇ f6/f ⁇ 8.20.
  • the system has better imaging Quality and low sensitivity.
  • 3.08 ⁇ f6/f ⁇ 6.56 is satisfied.
  • the radius of curvature of the object side surface of the sixth lens L6 is R11, and the radius of curvature of the image side surface of the sixth lens L6 is R12, and the following relationship is satisfied: -19.04 ⁇ (R11+R12)/(R11-R12) ⁇ -0.65, the shape of the sixth lens L6 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.
  • it satisfies -11.90 ⁇ (R11+R12)/(R11-R12) ⁇ -0.81.
  • 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. Within the range of the conditional expression, it 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, which satisfies the following relationship: 1.36 ⁇ f7/f ⁇ 10.73, through the reasonable distribution of optical power, the system has better imaging Quality and low sensitivity.
  • 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: -27.26 ⁇ (R13+R14)/(R13-R14) ⁇ -2.76
  • the shape of the seventh lens L7 is specified.
  • it is beneficial to correct the aberration of the off-axis angle of view.
  • it satisfies -17.04 ⁇ (R13+R14)/(R13-R14) ⁇ -3.44.
  • 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 ⁇ 0.16. Within the range of the conditional formula, it is beneficial to achieve ultra-thinness . Preferably, 0.06 ⁇ d13/TTL ⁇ 0.13 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
  • the reasonable distribution of optical power makes the system better The imaging quality and lower sensitivity.
  • -1.42 ⁇ f8/f ⁇ -0.71 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: -0.18 ⁇ (R15+R16)/(R15-R16) ⁇ 0.19, which is specified It is the shape of the eighth lens L8.
  • -0.11 ⁇ (R15+R16)/(R15-R16) ⁇ 0.15 is satisfied.
  • the on-axis 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: 0.03 ⁇ d15/TTL ⁇ 0.11. Within the range of the conditional formula, it is beneficial to realize ultra-thinness . Preferably, 0.05 ⁇ 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 ⁇ 1.10, thereby achieving ultra-thinness.
  • the aperture Fno of the imaging optical lens 10 is less than or equal to 1.96. Large aperture, good imaging performance.
  • the FOV of the imaging optical lens 10 is greater than or equal to 87°, 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. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 10 of the first embodiment.
  • the field curvature S in FIG. 4 is the field curvature in the sagittal direction, and T is the field curvature in the meridian direction. song.
  • Table 13 shows the values corresponding to the various 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 3.799mm
  • the full-field image height is 7.8mm
  • the diagonal field angle is 89.20°
  • 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 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 430 nm pass through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 20 of the second embodiment.
  • the second embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 3.849mm
  • the full-field image height is 7.8mm
  • the diagonal viewing angle is 88.50°
  • 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 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 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 430 nm pass through the imaging optical lens 30 of the third embodiment.
  • Fig. 12 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 30 of the third embodiment.
  • the entrance pupil diameter of the imaging optical lens is 3.872mm
  • the full-field image height is 7.8mm
  • the diagonal field angle is 87.40°
  • 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 v1/v2 3.97 2.96 3.75 f4/f 5.99 3.59 2.03 f 7.446 7.544 7.589 f1 7.357 7.042 7.600 f2 -27.373 -25.338 -25.051 f3 40.074 199.570 195.953 f4 44.599 27.073 15.405 f5 -19.477 -24.132 -17.636 f6 28.664 41.234 31.698 f7 20.211 23.213 54.273 f8 -6.325 -6.736 -8.625 f12 9.375 9.082 10.080 Fno 1.96 1.96 1.96 1.96
  • 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 optique photographique (10) se rapportant au domaine des lentilles optiques, la lentille optique photographique (10) 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 négative, une sixième lentille (L6) ayant une réfringence positive, une septième lentille (L7) ayant une réfringence positive, et une huitième lentille (L8) ayant une réfringence négative, la distance focale de la lentille optique photographique (10) étant f, la distance focale de la quatrième lentille (L4) étant d4, le nombre d'Abbe de la première lentille (L1) étant v1, le nombre d'Abbe de la deuxième lentille (L2) étant v2, qui satisfont les expressions relationnelles suivantes : 2,90 ≤ v1/v2 ≤ 4,00 ; et 2,00 ≤ f4/f ≤ 6,00. La lentille optique photographique (10) satisfait les exigences de conception d'une grande ouverture, d'un grand angle et d'une ultra-minceur, tout en ayant une bonne performance optique.
PCT/CN2019/125197 2019-12-13 2019-12-13 Lentille optique photographique WO2021114233A1 (fr)

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CN114114642A (zh) * 2021-12-28 2022-03-01 玉晶光电(厦门)有限公司 光学成像镜头
CN114217417A (zh) * 2021-12-28 2022-03-22 玉晶光电(厦门)有限公司 光学成像镜头
CN114740590A (zh) * 2022-02-28 2022-07-12 江西晶超光学有限公司 光学镜头、摄像模组及电子设备
US11953657B2 (en) 2020-01-20 2024-04-09 Largan Precision Co., Ltd. Photographing optical lens assembly including eight lenses of +−+−−++−, +−++−++−, ++++−++− or +−+−+−+− refractive powers, imaging apparatus and electronic device

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CN108121053A (zh) * 2017-12-29 2018-06-05 玉晶光电(厦门)有限公司 光学成像镜头
CN109870788A (zh) * 2019-04-02 2019-06-11 浙江舜宇光学有限公司 摄像透镜组
CN209690597U (zh) * 2019-04-02 2019-11-26 浙江舜宇光学有限公司 摄像透镜组

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CN104808332A (zh) * 2015-05-11 2015-07-29 中山联合光电科技股份有限公司 一种高分辨率、自动对焦电子显微目镜系统
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11953657B2 (en) 2020-01-20 2024-04-09 Largan Precision Co., Ltd. Photographing optical lens assembly including eight lenses of +−+−−++−, +−++−++−, ++++−++− or +−+−+−+− refractive powers, imaging apparatus and electronic device
CN114114642A (zh) * 2021-12-28 2022-03-01 玉晶光电(厦门)有限公司 光学成像镜头
CN114217417A (zh) * 2021-12-28 2022-03-22 玉晶光电(厦门)有限公司 光学成像镜头
CN114740590A (zh) * 2022-02-28 2022-07-12 江西晶超光学有限公司 光学镜头、摄像模组及电子设备
CN114740590B (zh) * 2022-02-28 2023-09-08 江西晶超光学有限公司 光学镜头、摄像模组及电子设备

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