WO2021127872A1 - Lentille optique photographique - Google Patents

Lentille optique photographique Download PDF

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Publication number
WO2021127872A1
WO2021127872A1 PCT/CN2019/127520 CN2019127520W WO2021127872A1 WO 2021127872 A1 WO2021127872 A1 WO 2021127872A1 CN 2019127520 W CN2019127520 W CN 2019127520W WO 2021127872 A1 WO2021127872 A1 WO 2021127872A1
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Prior art keywords
lens
curvature
imaging optical
radius
ttl
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PCT/CN2019/127520
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English (en)
Chinese (zh)
Inventor
卞旭琪
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/127520 priority Critical patent/WO2021127872A1/fr
Publication of WO2021127872A1 publication Critical patent/WO2021127872A1/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 -
    • 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 lenses traditionally mounted on mobile phone cameras usually adopt a three-element, four-element, or five-element lens structure.
  • the pixel area of photosensitive devices continues to shrink and the system's requirements for image quality continue to increase, six-element, seven-element, and eight-element lens structures Gradually appeared in the lens design.
  • the object of the present invention is to provide an imaging optical lens that can meet the requirements of ultra-thin and wide-angle while obtaining high imaging performance.
  • the 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 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 radius of curvature of the object side surface of the fifth lens is R9
  • the fifth lens image side The radius of curvature of is R10
  • the on-axis thickness of the fourth 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, and the following relationship is satisfied:
  • the on-axis thickness of the first lens is d1
  • the on-axis distance from the image side surface of the first lens to the object side surface of the second lens is d2, which satisfies the following relationship:
  • the curvature radius of the object side surface of the first lens is R1
  • the curvature radius of the image side surface of the first lens is R2
  • the axial thickness of the first lens is d1
  • the total optical length of the imaging optical lens is TTL
  • 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
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • 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 focal length of the third lens is f3
  • the axial thickness of the third lens is d5.
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship:
  • 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,
  • 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:
  • the focal length of the fifth lens is f5
  • the on-axis thickness of the fifth lens is d9
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
  • the radius of curvature of the object side surface of the sixth lens is R11
  • the radius of curvature of the image side surface of the sixth lens is R12
  • 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 camera optical lens is TTL, and satisfies the following relationship:
  • 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:
  • 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:
  • the beneficial effect of the present invention is that the imaging optical lens according to the present invention has excellent optical characteristics, meets the requirements of large aperture, ultra-thin and wide-angle, and is especially suitable for mobile phones composed of high-pixel CCD, CMOS and other imaging elements. 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 focal length of the overall imaging optical lens 10 is f
  • the focal length of the first lens L1 is f1, 0.60 ⁇ f1/f ⁇ 1.90, which specifies the ratio of the focal length of the first lens L1 to the total focal length of the system, which can effectively balance the system’s focal length Ball difference and curvature of field.
  • it satisfies 0.76 ⁇ f1/f ⁇ 1.75.
  • the focal length of the second lens L2 is defined as f2, f2 ⁇ 0.00, and the positive and negative of the focal length of the second lens L2 are defined.
  • the reasonable allocation of the focal length enables the system to have better imaging quality and lower sensitivity.
  • the curvature radius R9 of the object side surface of the fifth lens L5 and the curvature radius R10 of the image side surface of the fifth lens L5 satisfy the following relationship: -22.00 ⁇ (R9+R10)/(R9-R10) ⁇ -3.30, which specifies the fifth lens
  • the shape of L5, within the range specified by the conditional formula, can ease the deflection of light passing through the lens and effectively reduce aberrations.
  • it satisfies -21.97 ⁇ (R9+R10)/(R9-R10) ⁇ -3.31.
  • the on-axis thickness of the fourth lens L4 is d7
  • the on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L3 is d8, 4.20 ⁇ d7/d8 ⁇ 20.00, which specifies the fourth lens
  • the ratio of the thickness of L4 to the air space between the fourth lens L4 and the fifth lens L5 helps to compress the total length of the optical system within the range of the conditional formula, and realizes an ultra-thinning effect.
  • it satisfies 4.20 ⁇ d7/d8 ⁇ 19.89.
  • the imaging optical lens 10 of the present invention When the focal length of the imaging optical lens 10 of the present invention, the focal length of each lens, the on-axis distance from the image side to the object side of the relevant lens, and the on-axis thickness satisfy the above relationship, the imaging optical lens 10 can be made to have high performance and satisfy Low TTL design requirements.
  • the on-axis thickness of the first lens L1 is d1
  • the on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2 is d2, 13.00 ⁇ d1/d2 ⁇ 40.00, which specifies the first lens
  • the ratio of the thickness of L1 to the air space between the first lens L1 and the second lens L2 helps to compress the total length of the optical system within the range of the conditional formula, and achieves an ultra-thinning effect.
  • it satisfies 13.16 ⁇ d1/d2 ⁇ 39.92.
  • 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, -5.28 ⁇ (R1+R2)/(R1-R2) ⁇ -0.88, reasonable control of the first lens
  • the shape of the lens L1 enables the first lens L1 to effectively correct the spherical aberration of the system. Preferably, it satisfies -3.30 ⁇ (R1+R2)/(R1-R2) ⁇ -1.10.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.05 ⁇ d1/TTL ⁇ 0.21, which is beneficial to realize ultra-thinness.
  • it satisfies 0.08 ⁇ d1/TTL ⁇ 0.17.
  • 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, 1.84 ⁇ (R3+R4)/(R3-R4) ⁇ 24.59, which specifies the second lens L2
  • the shape helps reduce the degree of light deflection and reduce aberrations. Preferably, it satisfies 2.94 ⁇ (R3+R4)/(R3-R4) ⁇ 19.67.
  • 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: -29.07 ⁇ f2/f ⁇ -1.57.
  • the on-axis thickness of the second lens L2 is d3, which satisfies the following relationship: 0.02 ⁇ d3/TTL ⁇ 0.10, which is beneficial to realize ultra-thinness. Preferably, it satisfies 0.03 ⁇ d3/TTL ⁇ 0.08.
  • 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 R6, -6.04 ⁇ (R5+R6)/(R5-R6) ⁇ 1.46, which specifies the third
  • the shape of the lens L3 helps to reduce the degree of light deflection and reduce aberrations. Preferably, it satisfies -3.37 ⁇ (R5+R6)/(R5-R6) ⁇ 1.17.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the third lens L3 is f3
  • the following relationship is satisfied: -1.73 ⁇ f3/f ⁇ -1.80.
  • the system has better imaging quality and Lower sensitivity.
  • it satisfies -10.95 ⁇ f3/f ⁇ -2.24.
  • the on-axis thickness of the third lens L3 is d5, which satisfies the following relationship: 0.01 ⁇ d5/TTL ⁇ 0.04, which is beneficial to realize ultra-thinness. Preferably, it satisfies 0.02 ⁇ d5/TTL ⁇ 0.03.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the fourth lens L4 is f4
  • f4 which satisfies the following relationship: 0.63 ⁇ f4/f ⁇ 2.50, which stipulates the ratio of the focal length of the fourth lens to the focal length of the system, which is helpful in the range of the conditional expression Improve the performance of the optical system.
  • it satisfies 1.01 ⁇ f4/f ⁇ 2.00.
  • the curvature radius R7 of the object side surface of the fourth lens L4 and the curvature radius R8 of the image side surface of the fourth lens L4 satisfy the following relationship: 0.13 ⁇ (R7+R8)/(R7-R8) ⁇ 1.29, the fourth lens L4 is specified
  • the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • it satisfies 0.20 ⁇ (R7+R8)/(R7-R8) ⁇ 1.03.
  • the on-axis thickness of the fourth lens L4 is d7, which satisfies the following relationship: 0.07 ⁇ d7/TTL ⁇ 0.21, which is beneficial to realize ultra-thinness.
  • 0.10 ⁇ d7/TTL ⁇ 0.17 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the fifth lens L5 is f5, which satisfies the following relationship: -78.15 ⁇ f5/f ⁇ -3.50.
  • the limitation on the fifth lens L5 can effectively make the light angle of the imaging lens smooth. Reduce tolerance sensitivity. Preferably, it satisfies -48.85 ⁇ f5/f ⁇ -4.38.
  • the on-axis thickness of the fifth lens L5 is d9, which satisfies the following relationship: 0.02 ⁇ d9/TTL ⁇ 0.08, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d9/TTL ⁇ 0.06 is satisfied.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the sixth lens L6 is f6, which satisfies the following relationship: 0.88 ⁇ f6/f ⁇ 2.80.
  • the system has better imaging quality and lower Sensitivity.
  • it satisfies 1.41 ⁇ f6/f ⁇ 2.24.
  • the curvature radius R11 of the object side surface of the sixth lens L6 and the curvature radius R12 of the image side surface of the sixth lens L6 satisfy the following relationship: 0.75 ⁇ (R11+R12)/(R11-R12) ⁇ 3.10, the sixth lens L6 is specified
  • the shape is within the range of conditions, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • it satisfies 1.21 ⁇ (R11+R12)/(R11-R12) ⁇ 2.48.
  • the on-axis thickness of the sixth lens L6 is d11, which satisfies the following relationship: 0.02 ⁇ d11/TTL ⁇ 0.10, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ 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: -43.89 ⁇ f7/f ⁇ 35.47.
  • the system has better imaging quality and lower image quality.
  • Sensitivity Preferably, it satisfies -27.43 ⁇ f7/f ⁇ 28.38.
  • the curvature radius R13 of the object side surface of the seventh lens L7 and the curvature radius R14 of the image side surface of the seventh lens L7 satisfy the following relationship: -25.90 ⁇ (R13+R14)/(R13-R14) ⁇ 18.14, the seventh lens is specified
  • the shape of L7 is within the range of conditions, with the development of ultra-thin and wide-angle, it is conducive to correcting the aberration of off-axis angle of view.
  • it satisfies -16.19 ⁇ (R13+R14)/(R13-R14) ⁇ 14.51.
  • the on-axis thickness of the seventh lens L7 is d13, which satisfies the following relationship: 0.04 ⁇ d13/TTL ⁇ 0.14, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d13/TTL ⁇ 0.12 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: -1.45 ⁇ f8/f ⁇ -0.45.
  • the system has better imaging quality and comparison.
  • Low sensitivity Preferably, it satisfies -0.91 ⁇ f8/f ⁇ -0.57.
  • the curvature radius R15 of the object side surface of the eighth lens L8 and the curvature radius R16 of the image side surface of the eighth lens L8 satisfy the following relationship: -0.85 ⁇ (R15+R16)/(R15-R16) ⁇ -0.15, and 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 -0.53 ⁇ (R15+R16)/(R15-R16) ⁇ -0.19.
  • the on-axis thickness of the eighth lens L8 is d15, which satisfies the following relationship: 0.02 ⁇ d15/TTL ⁇ 0.09, which is conducive to achieving ultra-thinness.
  • 0.03 ⁇ d15/TTL ⁇ 0.07 is satisfied.
  • the ratio of the total optical length TTL of the imaging optical lens 10 to the image height IH is less than or equal to 1.71, which is beneficial to achieve ultra-thinness.
  • the wide-angle FOV of the imaging optical lens 10 is greater than or equal to 73, which is beneficial to realize a wide-angle.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 1.80. Large aperture, good imaging performance.
  • the overall optical length TTL of the overall imaging optical lens 10 can be shortened as much as possible, and the characteristics of miniaturization can be maintained.
  • the imaging optical lens 10 of the present invention will be described below with an example.
  • the symbols described in each example are as follows.
  • the unit of focal length, distance on axis, radius of curvature, thickness on axis, position of inflection point, and position of stagnation point is mm.
  • TTL optical length (the on-axis distance from the object side of the first lens L1 to the imaging surface), the unit is mm;
  • the object side and/or the image side of the lens can also be provided with inflection points and/or stagnation points to meet high-quality imaging requirements.
  • inflection points and/or stagnation points for specific implementations, refer to the following.
  • Table 1 and Table 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.
  • R The radius of curvature of the optical surface, and the radius of curvature of the center of the lens
  • R1 the radius of curvature of the object side surface of the first lens L1;
  • R2 the radius of curvature of the image side surface of the first lens L1;
  • R3 the radius of curvature of the object side surface of the second lens L2;
  • R4 the radius of curvature of the image side surface of the second lens L2;
  • R5 the radius of curvature of the object side surface of the third lens L3;
  • R6 the radius of curvature of the image side surface of the third lens L3;
  • R7 the radius of curvature of the object side of the fourth lens L4;
  • R8 the radius of curvature of the image side surface of the fourth lens L4;
  • R9 the radius of curvature of the object side surface of the fifth lens L5;
  • R10 the radius of curvature of the image side surface of the fifth lens L5;
  • R11 the radius of curvature of the object side surface of the sixth lens L6;
  • R12 the radius of curvature of the image side surface of the sixth lens L6;
  • R13 the radius of curvature of the object side surface of the seventh lens L7;
  • R14 the radius of curvature of the image side surface of the seventh lens L7;
  • R15 the radius of curvature of the object side of the 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 of the first embodiment of the present invention. ⁇ Table 2 ⁇
  • k is the conic coefficient
  • A4, A6, A8, A10, A12, A14, and A16 are the aspheric coefficients.
  • the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1).
  • the present invention is not limited to the aspheric polynomial form represented by the formula (1).
  • Table 3 and Table 4 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 10 of the first embodiment of the present invention.
  • P1R1 and P1R2 represent the object side and image side of the first lens L1 respectively
  • P2R1 and P2R2 represent the object side and image side of the second lens L2 respectively
  • P3R1 and P3R2 represent the object side and image side of the third lens L3 respectively.
  • P4R1, P4R2 represent the object side and image side of the fourth lens L4
  • P5R1, P5R2 represent the object side and image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and image side of the sixth lens L6
  • P7R1 P7R2 represents the object side and image side of the seventh lens L7, respectively
  • P8R1 and P8R2 represent the object side and the image side of the eighth lens L8, respectively.
  • the corresponding data in the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • the data corresponding to the “stationary point position” column is the vertical distance from the stationary point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • P4R1 2 0.735 2.045 P4R2 0 To To P5R1 0 To To P5R2 0 To To P6R1 1 2.925 To P6R2 1 2.595 To P7R1 2 1.275 3.555 P7R2 1 1.115 To P8R1 2 2.745 4.445 P8R2 1 1.245 To
  • Stagnation position 1 Stagnation position 2 P1R1 0 To To P1R2 0 To To P2R1 0 To To P2R2 0 To To P3R1 0 To To P3R2 1 2.025 To P4R1 2 1.135 2.305 P4R2 0 To To P5R1 0 To To P5R2 0 To To P6R1 0 To To P6R2 1 3.505 To P7R1 1 2.035 To P7R2 1 2.095 To P8R1 0 To To P8R2 1 2.415 To
  • FIG. 2 and 3 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 470 nm, 555 nm, 573 nm, 610 nm, and 650 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 573 nm after passing through the imaging optical lens 10 of the first embodiment.
  • the field curvature S in Fig. 4 is the field curvature in the sagittal direction, and T is the field curvature in the meridian direction. song.
  • Table 13 shows the values corresponding to the various values in each of Examples 1, 2, and 3 and the parameters that have been specified in the conditional expressions.
  • the first embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 4.462mm
  • the full-field image height is 6.00mm
  • the diagonal field angle is 73.00°
  • wide-angle, ultra-thin and its axis and axis
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the second embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 6 shows the aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • 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.
  • Stagnation position 1 Stagnation position 2 P1R1 0 To To P1R2 0 To To P2R1 0 To To P2R2 0 To To P3R1 0 To To P3R2 2 1.115 1.715 P4R1 0 To To P4R2 0 To To P5R1 0 To To P5R2 0 To To P6R1 0 To To P6R2 0 To To P7R1 1 1.815 To P7R2 1 2.155 To P8R1 0 To To P8R2 1 2.465 To
  • FIG. 6 and 7 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 470 nm, 555 nm, 573 nm, 610 nm, and 650 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 573 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 4.413mm
  • the full-field image height is 6.00mm
  • the diagonal field angle is 73.67°
  • wide-angle, ultra-thin and its axis and axis
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 11 and Table 12 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
  • Stagnation position 1 Stagnation position 2 P1R1 0 To To P1R2 0 To To P2R1 0 To To P2R2 0 To To P3R1 0 To To
  • P3R2 2 1.165 1.925 P4R1 0 To To P4R2 0 To To P5R1 0 To To P5R2 0 To To P6R1 1 3.205 To P6R2 1 3.265 To P7R1 1 1.685 To P7R2 1 1.445 To P8R1 0 To To P8R2 1 2.425 To
  • FIG. 10 and 11 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 470 nm, 555 nm, 573 nm, 610 nm, and 650 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 573 nm after passing through the imaging optical lens 30 of the third embodiment.
  • the entrance pupil diameter of the imaging optical lens is 4.205mm
  • the full-field image height is 6.00mm
  • the diagonal field angle is 76.38°
  • 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 0.92 1.41 1.60 d7/d8 4.21 9.98 19.78 (R9+R10)/(R9-R10) -3.31 -9.47 -21.93 f 8.031 7.943 7.568 f1 7.377 11.200 12.109 f2 -18.930 -105.606 -109.998 f3 -70.372 -25.224 -20.386 f4 13.376 10.259 9.520 f5 -42.213 -133.751 -295.733 f6 14.983 13.995 13.922 f7 189.932 -174.308 99.950 f8 -5.471 -5.621 -5.487 f12 10.530 11.737 12.722 Fno 1.80 1.80 1.80 1.80
  • f12 is the combined focal length of the first lens L1 and the second lens L2
  • 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 optique photographique (10) comprenant séquentiellement, d'un côté objet vers 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), et satisfaisant les formules relationnelles suivantes : 0,60≤f1/f≤1,90 ; f2≤0,00 ; -22,00≤(R9+R10)/(R9-R10)≤-3,30 ; 4,20≤d7/d8≤20,00. La lentille optique photographique présente de bonnes performances optiques telles qu'une grande ouverture, un grand angle et une ultra-minceur.
PCT/CN2019/127520 2019-12-23 2019-12-23 Lentille optique photographique WO2021127872A1 (fr)

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EP2149808B1 (fr) * 2008-08-02 2015-11-25 Ricoh Company, Ltd. Objectif de type rétrofocus
CN108254890A (zh) * 2017-12-29 2018-07-06 玉晶光电(厦门)有限公司 光学成像镜头
US20180239117A1 (en) * 2017-02-17 2018-08-23 Samsung Electronics Co., Ltd. Optical lens assembly and electronic apparatus including the same
CN109407282A (zh) * 2015-08-11 2019-03-01 大立光电股份有限公司 影像撷取镜片组及取像装置
CN109521550A (zh) * 2018-07-20 2019-03-26 瑞声声学科技(深圳)有限公司 摄像镜头
US20190235196A1 (en) * 2016-09-26 2019-08-01 Sekonix Co., Ltd. Lens system for head-up display
CN110412749A (zh) * 2019-08-28 2019-11-05 浙江舜宇光学有限公司 光学成像镜头
CN110554485A (zh) * 2019-10-17 2019-12-10 浙江舜宇光学有限公司 光学成像镜头
CN110908084A (zh) * 2019-12-23 2020-03-24 瑞声通讯科技(常州)有限公司 摄像光学镜头

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2149808B1 (fr) * 2008-08-02 2015-11-25 Ricoh Company, Ltd. Objectif de type rétrofocus
CN109407282A (zh) * 2015-08-11 2019-03-01 大立光电股份有限公司 影像撷取镜片组及取像装置
US20190235196A1 (en) * 2016-09-26 2019-08-01 Sekonix Co., Ltd. Lens system for head-up display
US20180239117A1 (en) * 2017-02-17 2018-08-23 Samsung Electronics Co., Ltd. Optical lens assembly and electronic apparatus including the same
CN108254890A (zh) * 2017-12-29 2018-07-06 玉晶光电(厦门)有限公司 光学成像镜头
CN109521550A (zh) * 2018-07-20 2019-03-26 瑞声声学科技(深圳)有限公司 摄像镜头
CN110412749A (zh) * 2019-08-28 2019-11-05 浙江舜宇光学有限公司 光学成像镜头
CN110554485A (zh) * 2019-10-17 2019-12-10 浙江舜宇光学有限公司 光学成像镜头
CN110908084A (zh) * 2019-12-23 2020-03-24 瑞声通讯科技(常州)有限公司 摄像光学镜头

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