WO2021114081A1 - Lentille optique de caméra - Google Patents

Lentille optique de caméra Download PDF

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Publication number
WO2021114081A1
WO2021114081A1 PCT/CN2019/124281 CN2019124281W WO2021114081A1 WO 2021114081 A1 WO2021114081 A1 WO 2021114081A1 CN 2019124281 W CN2019124281 W CN 2019124281W WO 2021114081 A1 WO2021114081 A1 WO 2021114081A1
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lens
imaging optical
curvature
radius
ttl
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PCT/CN2019/124281
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English (en)
Chinese (zh)
Inventor
言俊杰
孙雯
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/124281 priority Critical patent/WO2021114081A1/fr
Publication of WO2021114081A1 publication Critical patent/WO2021114081A1/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.
  • the imaging optical lens includes a first lens, a second lens with positive refractive power, and a third lens in sequence from the object side to the image side. Lenses, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with negative refractive power, a seventh lens with positive refractive power, and an eighth lens with negative refractive power;
  • the focal length of the imaging optical lens is f
  • the focal length of the second lens is f2
  • the total optical length of the imaging optical lens is TTL
  • the image height of the imaging optical lens is IH, and the following relationship is satisfied: 1.00 ⁇ f2/f ⁇ 2.50; 1.00 ⁇ TTL/IH ⁇ 1.35.
  • the focal length of the first lens is f1, and satisfies the following relationship: 2.50 ⁇
  • the radius of curvature of the object side surface of the seventh lens is R13
  • the radius of curvature of the image side surface of the seventh lens is R14, and the following relationship is satisfied: -6.00 ⁇ (R13+R14)/(R13-R14) ⁇ -1.50.
  • 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 following relationship is satisfied: -40.53 ⁇ (R1+R2)/(R1-R2) ⁇ 23.73; 0.02 ⁇ d1/TTL ⁇ 0.05.
  • the radius of curvature of the object side surface of the second lens is R3
  • the radius of curvature of the image side surface of the second lens is R4
  • the axial thickness of the second lens is d3, and the following relationship is satisfied: -5.32 ⁇ (R3+R4)/(R3-R4) ⁇ -1.37; 0.04 ⁇ d3/TTL ⁇ 0.13.
  • the focal length of the third lens is f3, the radius of curvature of the object side of the third lens is R5, the radius of curvature of the image side of the third lens is R6, and the on-axis thickness of the third lens is d5 , And satisfy the following relationship: -27.60 ⁇ f3/f ⁇ 21.47; -14.46 ⁇ (R5+R6)/(R5-R6) ⁇ 17.02; 0.01 ⁇ d5/TTL ⁇ 0.05.
  • 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 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
  • -9.28 ⁇ f5/f ⁇ 12.24 -3.80 ⁇ (R9+R10)/(R9-R10) ⁇ 14.99; 0.02 ⁇ d9/TTL ⁇ 0.07.
  • the focal length of the sixth lens is f6, the radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, and the on-axis thickness of the sixth lens is d11 , And satisfy the following relationship: -34.63 ⁇ f6/f ⁇ -1.10; -25.42 ⁇ (R11+R12)/(R11-R12) ⁇ -1.31; 0.03 ⁇ d11/TTL ⁇ 0.18.
  • the focal length of the seventh lens is f7
  • the on-axis thickness of the seventh lens is d13
  • the following relationship is satisfied: 0.58 ⁇ f7/f ⁇ 2.65; 0.03 ⁇ d13/TTL ⁇ 0.21.
  • 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 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
  • the on-axis thickness of the eighth lens is d15.
  • 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: a first lens L1, a second lens L2, an aperture S1, 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 second lens L2 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 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 second lens L2 is defined as f2, which satisfies the following relationship: 1.00 ⁇ f2/f ⁇ 2.50.
  • f2/f satisfies the condition
  • the optical power of the second lens can be effectively distributed, the aberration of the optical system can be corrected, and the imaging quality can be improved.
  • 1.05 ⁇ f2/f ⁇ 2.49 is satisfied.
  • the total optical length of the camera optical lens 10 is defined as TTL, and the image height of the camera optical lens 10 is IH, which satisfies the following relationship: 1.00 ⁇ TTL/IH ⁇ 1.35, which specifies the ratio of the total length of the system to the image height.
  • the systems in the range are ultra-thin. Preferably, 1.03 ⁇ TTL/IH ⁇ 1.34 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the first lens L1 as f1
  • the conditional expression The range helps to improve the performance of the optical system.
  • ⁇ 7.39 is satisfied.
  • the radius of curvature of the object side surface of the seventh lens L7 as R13
  • the radius of curvature of the image side surface of the seventh lens L7 as R14
  • the shape of the seventh lens L7 is specified.
  • the degree of deflection of light passing through the lens can be eased, and aberrations can be effectively reduced.
  • -5.84 ⁇ (R13+R14)/(R13-R14) ⁇ -1.70 is satisfied.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.02 ⁇ d1/TTL ⁇ 0.05, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d1/TTL ⁇ 0.04 is satisfied.
  • the curvature radius of the object side surface of the second lens L2 is R3, and the curvature radius of the image side surface of the second lens L2 is R4, which satisfies the following relationship: -5.32 ⁇ (R3+R4)/(R3-R4) ⁇ -1.37 , Specifies the shape of the second lens L2.
  • it is within the range, as the lens develops towards ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration.
  • it satisfies -3.32 ⁇ (R3+R4)/(R3 -R4) ⁇ -1.72.
  • the axial 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: 0.04 ⁇ d3/TTL ⁇ 0.13, which is beneficial to realize ultra-thinness.
  • 0.06 ⁇ d3/TTL ⁇ 0.11 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the third lens L3 as f3
  • the system has better Image quality and lower sensitivity.
  • -18.74 ⁇ f3/f ⁇ 17.18 is satisfied.
  • the curvature radius of the object side surface of the third lens L3 is R5, and the curvature radius of the image side surface of the third lens L3 is R6, which satisfies the following relationship: -14.46 ⁇ (R5+R6)/(R5-R6) ⁇ 17.02, which is specified
  • 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.
  • -9.04 ⁇ (R5+R6)/(R5-R6) ⁇ 13.61 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 ⁇ 0.05, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d5/TTL ⁇ 0.04 is satisfied.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the fourth lens as f4
  • 0.80 ⁇ f4/f ⁇ 3.86 which specifies the ratio of the focal length of the fourth lens to the focal length of the system, in the range of the conditional formula
  • the internal content helps to improve the performance of the optical system, and preferably, 1.28 ⁇ f4/f ⁇ 3.09 is satisfied.
  • the curvature radius of the object side surface of the fourth lens L4 is R7
  • the curvature radius of the image side surface of the fourth lens L4 is R8, which satisfies the following relationship: 0.25 ⁇ (R7+R8)/(R7-R8) ⁇ 2.18, which is
  • 0.41 ⁇ (R7+R8)/(R7-R8) ⁇ 1.75 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 ⁇ 0.11, which is beneficial to realize ultra-thinness.
  • 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 -5.80 ⁇ f5/f ⁇ 9.79.
  • the radius of curvature of the object side surface of the fifth lens L5 is R9
  • the radius of curvature of the image side surface of the fifth lens L5 is R10, which satisfies the following relationship: -3.80 ⁇ (R9+R10)/(R9-R10) ⁇ 14.99, which is specified It is the shape of the fifth lens L5.
  • the conditions are within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view.
  • it satisfies -2.37 ⁇ (R9+R10)/(R9-R10) ⁇ 11.99.
  • 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 ⁇ 0.07, 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 as f
  • the focal length of the sixth lens L6 as f6
  • the reasonable distribution of optical power makes the system better High imaging quality and low sensitivity.
  • it satisfies -21.65 ⁇ f6/f ⁇ -1.37.
  • the radius of curvature of the object side surface of the sixth lens L6 is R11
  • the radius of curvature of the image side surface of the sixth lens L6 is R12, which satisfies the following relationship: -25.42 ⁇ (R11+R12)/(R11-R12) ⁇ -1.31
  • 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.
  • -15.89 ⁇ (R11+R12)/(R11-R12) ⁇ -1.64 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: 0.03 ⁇ d11/TTL ⁇ 0.18, which is beneficial to realize ultra-thinness.
  • 0.05 ⁇ d11/TTL ⁇ 0.14 is satisfied.
  • the focal length of the seventh lens L7 is defined as f7, which satisfies the following relationship: 0.58 ⁇ f7/f ⁇ 2.65.
  • the reasonable distribution of the optical power enables the system to have better imaging quality and lower sensitivity.
  • 0.93 ⁇ f7/f ⁇ 2.12 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: 0.03 ⁇ d13/TTL ⁇ 0.21, which is beneficial to realize ultra-thinness.
  • 0.05 ⁇ d13/TTL ⁇ 0.17 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
  • -1.78 ⁇ f8/f ⁇ -0.46 the focal length of the eighth lens L8
  • the reasonable distribution of optical power makes the system better High imaging quality and low sensitivity.
  • -1.11 ⁇ f8/f ⁇ -0.57 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: -0.91 ⁇ (R15+R16)/(R15-R16) ⁇ 0.92, which is specified It is the shape of the eighth lens L8.
  • -0.57 ⁇ (R15+R16)/(R15-R16) ⁇ 0.74 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 ⁇ 0.17, which is conducive to achieving ultra-thinness.
  • 0.05 ⁇ d15/TTL ⁇ 0.14 is satisfied.
  • the image height of the overall imaging optical lens 10 is IH, which satisfies the following condition: TTL/IH ⁇ 1.35, thereby achieving ultra-thinness.
  • the aperture Fno of the imaging optical lens 10 is less than or equal to 2.00. Large aperture, good imaging performance.
  • the field of view FOV of the imaging optical lens 10 is greater than or equal to 95°, 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.
  • P3R2 2 0.675 1.645 P4R1 1 1.085 To P4R2 0 To To P5R1 0 To To P5R2 1 0.275 To P6R1 0 To To P6R2 0 To To P7R1 1 1.825 To P7R2 1 2.225 To P8R1 2 5.155 5.625 P8R2 1 1.475 To
  • 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 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 3.704mm
  • the full-field image height is 8.00mm
  • the diagonal field angle is 101.80°
  • wide-angle 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 having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 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 3.695mm
  • the full-field image height is 8.00mm
  • the diagonal field angle is 102.00°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 9 and Table 10 show 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, and 470 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.
  • 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 3.696mm
  • the full-field image height is 8.00mm
  • the diagonal field angle is 101.98°
  • wide-angle wide-angle
  • ultra-thin and 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 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 40 of the fourth embodiment.
  • FIG. 16 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes 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 4.016mm
  • the full-field image height is 7.80mm
  • the diagonal field angle is 95.80°
  • wide-angle wide-angle
  • ultra-thin and its axis and axis
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • Example 1 Example 2
  • Example 3 Example 4 f2/f 1.52 1.10 1.66 2.69 TTL/IH 1.06 1.06 1.06 1.32 f 7.297 7.280 7.280 7.911 f1 41.877 -52.959 32.043 23.629 f2 11.055 8.024 12.103 19.558 f3 -31.944 104.217 -56.148 -109.167 f4 11.673 18.745 15.169 18.467 f5 -33.848 -28.037 -31.683 64.552 f6 -19.657 -66.095 -126.068 -13.007 f7 8.458 11.404 12.867 9.213 f8 -5.104 -5.014 -5.153 -6.476 f12 8.966 9.990 8.994 10.829 Fno 1.97 1.97 1.97 1.97 1.97
  • 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 de caméra (10), comprenant séquentiellement, d'un côté objet à un côté image : une première lentille (L1), une deuxième lentille (L2) ayant une réfringence positive, une troisième lentille (L3), une quatrième lentille (L4) ayant une réfringence positive, une cinquième lentille (L5), une sixième lentille (L6) ayant une réfringence négative, une septième lentille (L7) ayant une réfringence positive et une huitième lentille (L7) ayant une réfringence négative. La lentille optique de caméra (10) a une longueur focale f, et la deuxième lentille (L2) a une longueur focale de f2. La lentille optique de caméra (10) a une longueur de piste totale (TTL) et une hauteur d'image (IH). Les relations suivantes sont satisfaites : 1,00≤f2/f≤2,50 ; 1,00≤TTL/IH≤1,35. La lentille optique de caméra (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/CN2019/124281 2019-12-10 2019-12-10 Lentille optique de caméra WO2021114081A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100259838A1 (en) * 2009-03-09 2010-10-14 Largan Precision Co., Ltd. Imaging lens assembly
CN106443987A (zh) * 2015-08-11 2017-02-22 大立光电股份有限公司 摄像用光学系统、取像装置及电子装置
CN107290841A (zh) * 2016-03-31 2017-10-24 佳能企业股份有限公司 光学镜头
CN107678140A (zh) * 2017-10-24 2018-02-09 浙江舜宇光学有限公司 光学成像镜头
CN107703608A (zh) * 2017-11-22 2018-02-16 浙江舜宇光学有限公司 光学成像镜头
CN110515187A (zh) * 2019-09-27 2019-11-29 浙江舜宇光学有限公司 光学成像镜头

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100259838A1 (en) * 2009-03-09 2010-10-14 Largan Precision Co., Ltd. Imaging lens assembly
CN106443987A (zh) * 2015-08-11 2017-02-22 大立光电股份有限公司 摄像用光学系统、取像装置及电子装置
CN107290841A (zh) * 2016-03-31 2017-10-24 佳能企业股份有限公司 光学镜头
CN107678140A (zh) * 2017-10-24 2018-02-09 浙江舜宇光学有限公司 光学成像镜头
CN107703608A (zh) * 2017-11-22 2018-02-16 浙江舜宇光学有限公司 光学成像镜头
CN110515187A (zh) * 2019-09-27 2019-11-29 浙江舜宇光学有限公司 光学成像镜头

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