WO2021127871A1 - Lentille optique d'appareil de prise de vues - Google Patents

Lentille optique d'appareil de prise de vues Download PDF

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Publication number
WO2021127871A1
WO2021127871A1 PCT/CN2019/127519 CN2019127519W WO2021127871A1 WO 2021127871 A1 WO2021127871 A1 WO 2021127871A1 CN 2019127519 W CN2019127519 W CN 2019127519W WO 2021127871 A1 WO2021127871 A1 WO 2021127871A1
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Prior art keywords
lens
imaging optical
curvature
radius
ttl
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PCT/CN2019/127519
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English (en)
Chinese (zh)
Inventor
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/CN2019/127519 priority Critical patent/WO2021127871A1/fr
Publication of WO2021127871A1 publication Critical patent/WO2021127871A1/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
    • G02B13/18—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 pixel size of photosensitive devices has been reduced, and the development trend of current electronic products with good functions, thin and short appearance, therefore, has a good
  • the miniaturized camera lens with image quality has become the mainstream in the current market.
  • the lenses traditionally mounted on mobile phone cameras mostly adopt a three-element or four-element lens structure.
  • the object of the present invention is to provide an imaging optical lens that can meet the requirements of large aperture and ultra-thin while achieving high imaging performance.
  • the embodiments of the present invention provide an imaging optical lens.
  • the imaging optical lens includes a first lens, a second lens, a third lens, and a fourth lens in order from the object side to the image side.
  • the 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 eighth lens is R15
  • the eighth lens image side The radius of curvature of is R16
  • the on-axis thickness of the seventh lens is d13
  • the on-axis distance from the image side of the seventh lens to the object side of the eighth lens is d14, which satisfies the following relationship:
  • the focal length of the eighth lens is f8, and satisfies the following relationship:
  • the radius of curvature of the object side surface of the first lens is R1
  • the radius of curvature of the image side surface of the first lens is R2
  • the axial thickness of the first lens is d1
  • the total optical length of the imaging optical lens It is TTL and satisfies the following relationship:
  • the curvature radius of the object side surface of the second lens is R3
  • the curvature radius 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 It is TTL and satisfies the following relationship:
  • the focal length of the third lens is f3
  • the radius of curvature of the object side of the third lens is R5
  • the radius of curvature of the image side of the third lens is R6, and the on-axis thickness of the third lens is d5
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship:
  • the focal length of the fourth lens is f4
  • the radius of curvature of the object side of the fourth lens is R7
  • the radius of curvature of the image side of the fourth lens is R8, and the on-axis thickness of the fourth lens is d7
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship:
  • 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:
  • 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:
  • the focal length of the seventh lens is f7
  • the on-axis curvature radius of the object side of the seventh lens is R13
  • the on-axis curvature radius of the image side of the seventh lens is R14
  • the optical The total length is TTL and satisfies the following relationship:
  • the on-axis thickness of the eighth lens is d15
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
  • the imaging optical lens according to the present invention has excellent optical characteristics, meets the requirements of large aperture and ultra-thin, and is especially suitable for mobile phone camera lens components and camera components composed of high-pixel CCD, CMOS and other imaging elements. WEB camera lens.
  • FIG. 1 is a schematic diagram of the structure of an imaging optical lens according to a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 1;
  • FIG. 3 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 1;
  • FIG. 4 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 1;
  • FIG. 5 is a schematic diagram of the structure of an imaging optical lens according to a second embodiment of the present invention.
  • FIG. 6 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 5;
  • FIG. 7 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 5;
  • FIG. 8 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 5;
  • FIG. 9 is a schematic diagram of the structure of an imaging optical lens according to a third embodiment of the present invention.
  • FIG. 10 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 9;
  • FIG. 11 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 9;
  • FIG. 12 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 9.
  • FIG. 13 is a schematic diagram of the structure of an imaging optical lens according to a fourth embodiment of the present invention.
  • FIG. 14 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 13;
  • FIG. 15 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 13;
  • FIG. 16 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 13.
  • FIG. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention.
  • the imaging optical lens 10 includes eight lenses. Specifically, the imaging optical lens 10 includes in order from the object side to the image side: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens. Lens L6, seventh lens L7, and eighth lens L8.
  • An optical element such as an optical filter GF may be provided between the eighth lens L8 and the image plane Si.
  • the focal length of the overall imaging optical lens 10 as f
  • the focal length of the first lens L1 as f1
  • the focal length of the first lens and the total The ratio of focal lengths helps reduce the total length of the system within the range of conditions.
  • 0.61 ⁇ f1/f ⁇ 1.69 is satisfied.
  • the focal length of the second lens L2 is defined as f2, which satisfies the following relational expression: f2 ⁇ 0, which specifies the focal length of the second lens, which helps correct system aberrations and improve imaging quality.
  • 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, -10 ⁇ (R15+R16)/(R15-R16) ⁇ -1.2, which specifies the eighth lens
  • the shape of the lens helps reduce the degree of light deflection and reduce aberrations. Preferably, -9.90 ⁇ (R15+R16)/(R15-R16) ⁇ -1.22 is satisfied.
  • the on-axis thickness of the seventh lens L7 is defined as d13
  • the on-axis distance from the image side surface of the seventh lens L7 to the object side surface of the eighth lens L8 is d14
  • the following relationship is satisfied: 0.5 ⁇ d13/d14 ⁇ 1.5, which specifies the ratio of the thickness of the seventh lens to the air gap of the seventh and eighth lenses, which is helpful for lens processing and lens assembly within the scope of the conditional formula. It satisfies 0.52 ⁇ d13/d14 ⁇ 1.49.
  • the focal length of the eighth lens L8 is f8, which satisfies the series relationship: -22 ⁇ f8/f ⁇ -0.8, which stipulates the ratio of the focal length of the eighth lens to the total focal length, which helps to correct aberrations and improve Image quality of the image surface. Preferably, it satisfies -20.72 ⁇ f8/f ⁇ -0.81.
  • 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 Large aperture, wide-angle, ultra-thin design requirements.
  • the curvature radius of the object side surface of the first lens L1 is R1, and the curvature radius of the image side surface of the first lens L1 is R2, -11.03 ⁇ (R1+R2)/(R1-R2) ⁇ -0.71, which specifies the first
  • it satisfies -6.89 ⁇ (R1+R2)/(R1-R2) ⁇ -0.89.
  • the on-axis thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.04 ⁇ d1/TTL ⁇ 0.19, which is beneficial to achieve ultra-thinness within the specified range of the conditional expression.
  • 0.06 ⁇ d1/TTL ⁇ 0.15 is satisfied.
  • the focal length of the second lens L2 is f2, which satisfies the series of relational expressions: -3.80 ⁇ f2/f ⁇ -0.77.
  • f2 The focal length of the second lens L2 is f2
  • -3.80 ⁇ f2/f ⁇ -0.77 Within the range of the conditional expressions, by controlling the negative refractive power of the second lens L2 in a reasonable range, it is beneficial for correction
  • the aberration of the optical system Preferably, it satisfies -2.38 ⁇ f2/f ⁇ -0.97.
  • 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, 0.69 ⁇ (R3+R4)/(R3-R4) ⁇ 8.95, which specifies the second lens L2
  • R3+R4/(R3-R4) ⁇ 8.95 which specifies the second lens L2
  • the shape of the lens is within the range, as the lens develops towards ultra-thin and wide-angle, it is helpful to correct the problem of axial chromatic aberration.
  • 1.10 ⁇ (R3+R4)/(R3-R4) ⁇ 7.16 is satisfied.
  • the on-axis thickness of the second lens L2 is d3, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.02 ⁇ d3/TTL ⁇ 0.05, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d3/TTL ⁇ 0.04 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 focal length of the third lens L3 as f3
  • the system has better imaging quality and lower sensitivity.
  • 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, -5.76 ⁇ (R5+R6)/(R5-R6) ⁇ -0.98, which specifies the third
  • the shape of the lens L3 can effectively control the shape of the third lens L3 and facilitate the molding of the third lens L3.
  • the degree of deflection of the light passing through the lens can be relaxed, and aberrations can be effectively reduced.
  • it satisfies -3.60 ⁇ (R5+R6)/(R5-R6) ⁇ -1.22.
  • the on-axis thickness of the third lens L3 is d5, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.03 ⁇ d5/TTL ⁇ 0.16. Within the specified range of the conditional formula, it is beneficial to realize ultra-thinness. Preferably, 0.05 ⁇ d5/TTL ⁇ 0.13 is satisfied.
  • the focal length of the fourth lens L4 is f4, which satisfies the series relationship: -74.25 ⁇ f4/f ⁇ 224.73, which specifies the ratio of the focal length of the fourth lens L4 to the overall focal length.
  • the system has better imaging quality and lower sensitivity through reasonable distribution of optical power.
  • -46.41 ⁇ f4/f ⁇ 179.79 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, 0.28 ⁇ (R7+R8)/(R7-R8) ⁇ 8.87, which specifies the fourth lens L4
  • the shape of is within the range of the conditional formula, with the development of ultra-thin and wide-angle, it is helpful to correct the aberration of the off-axis angle of view.
  • 0.44 ⁇ (R7+R8)/(R7-R8) ⁇ 7.09 is satisfied.
  • the axial thickness of the fourth lens L4 is d7, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.02 ⁇ d7/TTL ⁇ 0.07, which is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d7/TTL ⁇ 0.06 is satisfied.
  • the focal length of the fifth lens L5 is f5, which satisfies the series relational expression: -43.50 ⁇ f5/f ⁇ 50.58.
  • the ratio of the focal length of the fifth lens to the total focal length of the system is specified, and the focal length is reasonably allocated , So that the system has better imaging quality and lower sensitivity.
  • -27.18 ⁇ f5/f ⁇ 40.47 is satisfied.
  • the radius of curvature of the object side surface of the fifth lens L5 is R9
  • the radius of curvature of the image side surface of the fifth lens L5 is R10, -21.37 ⁇ (R9+R10)/(R9-R10) ⁇ 2.47, which specifies the fifth lens
  • the shape of L5 is within the range of the conditional expression, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of off-axis angle of view.
  • -13.36 ⁇ (R9+R10)/(R9-R10) ⁇ 1.98 is satisfied.
  • the axial thickness of the fifth lens L5 is d9, and the total optical length of the imaging optical lens is TTL, which satisfies the following relational expression: 0.02 ⁇ d9/TTL ⁇ 0.06. Within the range of the conditional expression, it is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d9/TTL ⁇ 0.05 is satisfied.
  • the focal length of the sixth lens L6 is f6, which satisfies the series relationship: -187.55 ⁇ f6/f ⁇ 7.97, which specifies the ratio of the focal length of the sixth lens L6 to the overall focal length.
  • the system has better imaging quality and lower sensitivity through reasonable distribution of optical power.
  • -117.22 ⁇ f6/f ⁇ 6.38 is satisfied.
  • 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, -33.43 ⁇ (R11+R12)/(R11-R12) ⁇ 1.67, which specifies the sixth lens
  • the shape of L6 is within the range of the conditional expression, 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 -20.89 ⁇ (R11+R12)/(R11-R12) ⁇ 1.34.
  • the on-axis thickness of the sixth lens L6 is d11, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.03 ⁇ d11/TTL ⁇ 0.15, which is conducive to achieving ultra-thinness.
  • 0.04 ⁇ d11/TTL ⁇ 0.12 is satisfied.
  • the focal length of the seventh lens L7 is f7, which satisfies the series relationship: -2.21 ⁇ f7/f ⁇ 11.89, which specifies the ratio of the focal length of the seventh lens L7 to the overall focal length.
  • the system has better imaging quality and lower sensitivity through reasonable distribution of optical power.
  • -1.38 ⁇ f7/f ⁇ 9.51 is satisfied.
  • the axial thickness of the seventh lens L7 is d13, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.03 ⁇ d13/TTL ⁇ 0.16, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d13/TTL ⁇ 0.13 is satisfied.
  • the on-axis thickness of the eighth lens L8 is d15, and the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.03 ⁇ d15/TTL ⁇ 0.12, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d15/TTL ⁇ 0.09 is satisfied.
  • the combined focal length of the first lens L1 and the second lens L2 is defined as f12, which satisfies the following relational expression: 0.54 ⁇ f12/f ⁇ 10.74.
  • the imaging optics can be eliminated
  • the aberration and distortion of the lens 10 can suppress the back focal length of the imaging optical lens 10 and maintain the miniaturization of the image lens system group.
  • the ratio TTL/IH of the total optical length of the imaging optical lens 10 to the image height TTL/IH is less than or equal to 1.23, which is conducive to achieving ultra-thinness.
  • the aperture F number (Fno) of the imaging optical lens 10 is less than or equal to 1.95. 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 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 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
  • V8 Abbe number of the eighth lens L8;
  • 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.
  • 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 according to 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 respectively represent the object side surface and the image side surface of the eighth lens L8.
  • the corresponding data in the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • the data corresponding to the “stationary point position” column is the vertical distance from the stationary point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • FIG. 2 and 3 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 436 nm pass through the imaging optical lens 10 of the first embodiment.
  • Fig. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 10 of the first embodiment.
  • the field curvature S in Fig. 4 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction. song.
  • Table 17 shows the values corresponding to the various numerical values in each of Examples 1, 2, 3, and 4 and the parameters specified in the conditional expressions.
  • the first embodiment satisfies each conditional expression.
  • the entrance pupil diameter of the imaging optical lens is 4.664mm
  • the full-field image height is 8.00mm
  • the diagonal field angle is 80.00°
  • the aperture is large, wide-angle, and ultra-thin.
  • On-axis and off-axis chromatic aberrations are fully corrected, and they have 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.
  • FIG. 6 and 7 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 436 nm pass through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion after light with a wavelength of 546 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 4.668mm
  • the full-field image height is 8.00mm
  • the diagonal viewing angle is 80.00°
  • the aperture is large, wide-angle, and ultra-thin.
  • On-axis and off-axis chromatic aberrations are fully corrected, and they have 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.
  • FIG. 10 and 11 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 436 nm pass through the imaging optical lens 30 of the third embodiment.
  • FIG. 12 shows a schematic diagram of field curvature and distortion after light with a wavelength of 546 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 4.663mm
  • the full-field image height is 8.00mm
  • the diagonal viewing angle is 80.00°
  • the aperture is large, wide-angle, and ultra-thin.
  • On-axis and off-axis chromatic aberrations are fully corrected, and they have 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 according to the fourth embodiment of the present invention.
  • FIG. 14 and 15 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 656 nm, 587 nm, 546 nm, 486 nm, and 436 nm pass through the imaging optical lens 40 of the fourth embodiment.
  • FIG. 16 shows a schematic diagram of field curvature and distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 40 of the fourth embodiment.
  • the fourth embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 4.663mm
  • the full-field image height is 8.00mm
  • the diagonal viewing angle is 80.00°
  • the aperture is large, wide-angle, and ultra-thin.
  • On-axis and off-axis chromatic aberrations are fully corrected, and they have excellent optical characteristics.
  • Example 1 Example 2
  • Example 3 Example 4 f1/f 0.88 0.62 0.92 1.68 (R15+R16)/(R15-R16) -1.24 -1.49 -9.79 -4.72 d13/d14 0.53 0.89 1.48 0.78 f 9.002 9.010 8.999 8.999 f1 7.910 5.576 8.322 15.097 f2 -17.109 -10.472 -16.666 -16.666 f3 24.797 46.771 19.549 8.388 f4 1,348.704 -89.465 -161.740 -334.107 f5 -195.771 -59.716 91.326 303.466 f6 -844.166 35.765 47.811 30.308 f7 23.072 71.427 -9.934 -8.282 f8 -7.456 -9.083 -174.923 -83.798 f12 12.500 9.716 13.848 64.419 Fno 1.93 1.93
  • 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 d'appareil de prise de vues. La lentille optique d'appareil de prise de vues comprend, dans un ordre allant d'un côté objet à un côté image : une première lentille (L1), une deuxième lentille (L2), une troisième lentille (L3), une quatrième lentille (L4), une cinquième lentille (L5), une sixième lentille (L6), une septième lentille (L7) et une huitième lentille (L8) ; en outre, les expressions relationnelles suivantes sont satisfaites : 0,6 ≤ f1/f ≤ 1,7 ; f2 ≤ 0 mm ; -10 ≤ (R15+R16)/(R15-R16) ≤ 1,2 ; et 0,5 ≤ d13/d14 ≤ 1,5. La lentille optique d'appareil de prise de vues a de bonnes propriétés optiques telles qu'une grande ouverture et une conception ultramince.
PCT/CN2019/127519 2019-12-23 2019-12-23 Lentille optique d'appareil de prise de vues WO2021127871A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109407267A (zh) * 2017-08-18 2019-03-01 大立光电股份有限公司 影像撷取光学系统组、取像装置及电子装置
CN110471168A (zh) * 2019-08-19 2019-11-19 瑞声通讯科技(常州)有限公司 摄像光学镜头
CN110515183A (zh) * 2019-08-19 2019-11-29 瑞声通讯科技(常州)有限公司 摄像光学镜头
CN110531501A (zh) * 2019-10-09 2019-12-03 浙江舜宇光学有限公司 光学成像镜头
CN110554482A (zh) * 2019-10-14 2019-12-10 浙江舜宇光学有限公司 光学成像镜头
WO2019235498A1 (fr) * 2018-06-04 2019-12-12 日精テクノロジー株式会社 Système optique grand angle et dispositif d'imagerie équipé dudit système

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109407267A (zh) * 2017-08-18 2019-03-01 大立光电股份有限公司 影像撷取光学系统组、取像装置及电子装置
WO2019235498A1 (fr) * 2018-06-04 2019-12-12 日精テクノロジー株式会社 Système optique grand angle et dispositif d'imagerie équipé dudit système
CN110471168A (zh) * 2019-08-19 2019-11-19 瑞声通讯科技(常州)有限公司 摄像光学镜头
CN110515183A (zh) * 2019-08-19 2019-11-29 瑞声通讯科技(常州)有限公司 摄像光学镜头
CN110531501A (zh) * 2019-10-09 2019-12-03 浙江舜宇光学有限公司 光学成像镜头
CN110554482A (zh) * 2019-10-14 2019-12-10 浙江舜宇光学有限公司 光学成像镜头

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