WO2021128121A1 - Lentille optique de caméra - Google Patents

Lentille optique de caméra Download PDF

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Publication number
WO2021128121A1
WO2021128121A1 PCT/CN2019/128563 CN2019128563W WO2021128121A1 WO 2021128121 A1 WO2021128121 A1 WO 2021128121A1 CN 2019128563 W CN2019128563 W CN 2019128563W WO 2021128121 A1 WO2021128121 A1 WO 2021128121A1
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Prior art keywords
lens
imaging optical
optical lens
ttl
curvature
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PCT/CN2019/128563
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English (en)
Chinese (zh)
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新田耕二
张磊
崔元善
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/128563 priority Critical patent/WO2021128121A1/fr
Publication of WO2021128121A1 publication Critical patent/WO2021128121A1/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

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 coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal).
  • CCD Charge Coupled Device
  • CMOS Sensor complementary metal oxide semiconductor devices
  • the pixel size of photosensitive devices has been reduced, and nowadays electronic products are developed with good functions, thin and short appearance, so they have
  • the miniaturized camera lens with good 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 ultra-thin and wide-angle while obtaining high imaging performance.
  • an embodiment of the present invention provides an imaging optical lens.
  • the imaging optical lens includes, in order from the object side to the image side, a first lens with negative refractive power, and a first lens with positive refractive power.
  • Two lenses a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens, a sixth lens, and a seventh lens;
  • the maximum angle of view of the imaging optical lens is FOV
  • the focal length of the imaging optical lens is f
  • the focal length of the fourth lens is f4
  • the radius of curvature of the object side of the second lens is R3
  • the second lens has a focal length of f4.
  • the radius of curvature of the lens image side is R4, and it satisfies the following relationship: 100.00° ⁇ FOV ⁇ 135.00°; -20.00 ⁇ f4/f ⁇ -10.00; -10.00 ⁇ (R3+R4)/(R3-R4) ⁇ -2.00 .
  • the focal length of the first lens is f1
  • the radius of curvature of the object side of the first lens is R1
  • the radius of curvature of the image side of the first lens is R2
  • the on-axis thickness of the first lens is d1
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -5.89 ⁇ f1/f ⁇ -0.89; -5.33 ⁇ (R1+R2)/(R1-R2) ⁇ 1.78; 0.03 ⁇ d1/TTL ⁇ 0.19.
  • the imaging optical lens satisfies the following relationship: -3.68 ⁇ f1/f ⁇ -1.11; -3.33 ⁇ (R1+R2)/(R1-R2) ⁇ 1.43; 0.04 ⁇ d1/TTL ⁇ 0.15.
  • the object side surface of the second lens is convex on the paraxial axis, and the image side surface is concave on the paraxial axis;
  • the focal length of the second lens is f2
  • the on-axis thickness of the second lens is d3.
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 2.76 ⁇ f2/f ⁇ 130.99; 0.02 ⁇ d3/TTL ⁇ 0.12.
  • the imaging optical lens satisfies the following relationship: 4.41 ⁇ f2/f ⁇ 104.79; 0.03 ⁇ d3/TTL ⁇ 0.10.
  • the object side surface of the third lens is convex on the par axis, and the image side surface is convex on the par axis;
  • the focal length of the third lens is f3
  • the radius of curvature of the object side of the third lens is R5, so
  • the curvature radius of the image side surface of the third lens is R6, the axial thickness of the third lens is d5, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.45 ⁇ f3/f ⁇ 3.15; 0.01 ⁇ (R5+R6)/(R5-R6) ⁇ 0.28; 0.03 ⁇ d5/TTL ⁇ 0.18.
  • the imaging optical lens satisfies the following relationship: 0.72 ⁇ f3/f ⁇ 2.52; 0.02 ⁇ (R5+R6)/(R5-R6) ⁇ 0.23; 0.05 ⁇ d5/TTL ⁇ 0.15.
  • the radius of curvature of the object side surface of the fourth lens is R7
  • the radius of curvature of the image side surface of the fourth lens is R8, and the axial thickness of the fourth lens is d7
  • the total optical length of the imaging optical lens It is TTL and satisfies the following relationship: -4.17 ⁇ (R7+R8)/(R7-R8) ⁇ 20.67; 0.03 ⁇ d7/TTL ⁇ 0.09.
  • the imaging optical lens satisfies the following relational expression: -2.61 ⁇ (R7+R8)/(R7-R8) ⁇ 16.53; 0.04 ⁇ d7/TTL ⁇ 0.07.
  • the image side surface of the fifth lens is convex on the paraxial; the focal length of the fifth lens is f5, the radius of curvature of the object side surface of the fifth lens is R9, and the radius of curvature of the image side surface of the fifth lens Is R10, the on-axis thickness of the fifth lens is d9, the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -69.30 ⁇ f5/f ⁇ 2.94; -31.69 ⁇ (R9+R10)/ (R9-R10) ⁇ 2.22; 0.04 ⁇ d9/TTL ⁇ 0.34.
  • the imaging optical lens satisfies the following relationship: -43.32 ⁇ f5/f ⁇ 2.35; -19.81 ⁇ (R9+R10)/(R9-R10) ⁇ 1.78; 0.07 ⁇ d9/TTL ⁇ 0.27.
  • 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: -101.86 ⁇ f6/f ⁇ 51.64; 0.59 ⁇ (R11+R12)/(R11-R12) ⁇ 23.96; 0.04 ⁇ d11/TTL ⁇ 0.12.
  • the imaging optical lens satisfies the following relationship: -63.66 ⁇ f6/f ⁇ 41.31; 0.95 ⁇ (R11+R12)/(R11-R12) ⁇ 19.16; 0.06 ⁇ d11/TTL ⁇ 0.10.
  • the image side surface of the seventh lens is concave on the paraxial; the focal length of the seventh lens is f7, the radius of curvature of the object side surface of the seventh lens is R13, and the radius of curvature of the image side surface of the seventh lens Is R14, and the axial thickness of the seventh lens is d13, the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -7.45 ⁇ f7/f ⁇ 9.26; -14.68 ⁇ (R13+R14) /(R13-R14) ⁇ 4.39; 0.04 ⁇ d13/TTL ⁇ 0.19.
  • the imaging optical lens satisfies the following relationship: -4.66 ⁇ f7/f ⁇ 7.41; -9.17 ⁇ (R13+R14)/(R13-R14) ⁇ 3.51; 0.06 ⁇ d13/TTL ⁇ 0.15.
  • the total optical length TTL of the imaging optical lens is less than or equal to 7.92 mm.
  • the total optical length TTL of the imaging optical lens is less than or equal to 7.56 mm.
  • the aperture F number of the imaging optical lens is less than or equal to 2.32.
  • the aperture F number of the imaging optical lens is less than or equal to 2.27.
  • the imaging optical lens according to the present invention has excellent optical characteristics, is ultra-thin, wide-angle and fully compensated for chromatic aberration, and is especially suitable for mobile phone camera lenses composed of high-pixel CCD, CMOS and other imaging elements. Components 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 seven 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 and seventh lens L7.
  • An optical element such as an optical filter GF may be provided on the image side of the seventh lens L7.
  • the first lens L1 is made of plastic
  • the second lens L2 is made of plastic
  • the third lens L3 is made of plastic
  • the fourth lens L4 is made of plastic
  • the fifth lens L5 is made of plastic
  • the sixth lens L6 is made of plastic
  • the seventh lens is made of plastic.
  • the lens L7 is made of plastic.
  • the maximum field of view of the overall camera optical lens 10 is defined as FOV, 100.00° ⁇ FOV ⁇ 135.00°, which specifies the field of view of the camera optical lens 10, within the range, ultra-wide-angle photography can be achieved, and user experience can be improved.
  • FOV field of view
  • 100.00° ⁇ FOV ⁇ 135.00° which specifies the field of view of the camera optical lens 10 within the range, ultra-wide-angle photography can be achieved, and user experience can be improved.
  • it satisfies 100.10° ⁇ FOV ⁇ 134.87°.
  • the system has better imaging quality and lower Sensitivity. Preferably, it satisfies -19.98 ⁇ f4/f ⁇ -10.00.
  • the curvature radius of the object side surface of the second lens L2 as R3, and the curvature radius of the image side surface of the second lens L2 is R4, -10.00 ⁇ (R3+R4)/(R3-R4) ⁇ -2.00, which specifies the second lens
  • the photographic optical lens 10 When the focal length of the photographic optical lens 10, the focal length of the related lens, the maximum field angle of the photographic optical lens, and the axial thickness of the photographic optical lens of the present invention satisfy the above-mentioned relational expressions, the photographic optical lens 10 can be made to have high performance and meet the requirements of low TTL. Design requirements.
  • the first lens L1 has a negative refractive power.
  • the focal length of the first lens L1 is f1, which satisfies the following relationship: -5.89 ⁇ f1/f ⁇ -0.89, which specifies the ratio of the focal length of the first lens L1 to the overall focal length.
  • the first lens has an appropriate negative refractive power, which is conducive to reducing system aberrations and at the same time conducive to the development of ultra-thin and wide-angle lenses.
  • it satisfies -3.68 ⁇ f1/f ⁇ -1.11.
  • the curvature radius R1 of the object side surface of the first lens L1 and the curvature radius R2 of the image side surface of the first lens L1 satisfy the following relationship: -5.33 ⁇ (R1+R2)/(R1-R2) ⁇ 1.78, reasonable control of the first lens L1
  • the shape of the first lens L1 can effectively correct the spherical aberration of the system. Preferably, it satisfies -3.33 ⁇ (R1+R2)/(R1-R2) ⁇ 1.43.
  • 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: 0.03 ⁇ d1/TTL ⁇ 0.19, which is conducive to achieving ultra-thinness.
  • the object side surface of the second lens L2 is convex at the paraxial position, and the image side surface is concave at the paraxial position, and has positive refractive power.
  • the focal length f2 of the second lens L2 satisfies the following relationship: 2.76 ⁇ f2/f ⁇ 130.99.
  • it is beneficial to correct the aberration of the optical system Preferably, 4.41 ⁇ f2/f ⁇ 104.79.
  • the on-axis thickness of the second lens L2 is d3, which satisfies the following relationship: 0.02 ⁇ d3/TTL ⁇ 0.12, which is beneficial to realize ultra-thinness.
  • the object side surface of the third lens L3 is convex at the paraxial position, and the image side surface is convex at the paraxial position, and has positive refractive power.
  • the focal length f3 of the third lens L3 satisfies the following relational expression: 0.45 ⁇ f3/f ⁇ 3.15.
  • the reasonable distribution of optical power enables the system to have better imaging quality and lower sensitivity.
  • the curvature radius R5 of the object side surface of the third lens L3 and the curvature radius R6 of the image side surface of the third lens L3 satisfy the following relationship: 0.01 ⁇ (R5+R6)/(R5-R6) ⁇ 0.28, which can effectively control the third lens L3
  • the shape of is beneficial to the molding of the third lens L3.
  • the degree of deflection of light passing through the lens can be eased, and aberrations can be effectively reduced.
  • the on-axis thickness of the third lens L3 is d5, which satisfies the following relationship: 0.03 ⁇ d5/TTL ⁇ 0.18, which is beneficial to realize ultra-thinness.
  • the fourth lens L4 has a negative refractive power.
  • 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: -4.17 ⁇ (R7+R8)/(R7-R8) ⁇ 20.67, the fourth lens is specified
  • the shape of L4 is within the range, with the development of ultra-thin and wide-angle, it is easy to correct problems such as the aberration of the off-axis angle of view.
  • the on-axis thickness of the fourth lens L4 is d7, which satisfies the following relationship: 0.03 ⁇ d7/TTL ⁇ 0.09, which is beneficial to realize ultra-thinness.
  • the image side surface of the fifth lens L5 is convex at the paraxial position.
  • the focal length f5 of the fifth lens L5 satisfies the following relationship: -69.30 ⁇ f5/f ⁇ 2.94.
  • the limitation of the fifth lens L5 can effectively smooth the light angle of the imaging lens and reduce the tolerance 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: -31.69 ⁇ (R9+R10)/(R9-R10) ⁇ 2.22, the fifth lens is specified
  • the shape of L5 is within the range of conditions, with the development of ultra-thin and wide-angle, it is conducive to correcting the aberration of the off-axis angle of view.
  • the on-axis thickness of the fifth lens L5 is d9, which satisfies the following relationship: 0.04 ⁇ d9/TTL ⁇ 0.34, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d9/TTL 0.07 ⁇ d9/TTL ⁇ 0.27.
  • the focal length f6 of the sixth lens L6 satisfies the following relational expression: -101.86 ⁇ f6/f ⁇ 51.64.
  • the system has better imaging quality and lower sensitivity.
  • 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: 0.59 ⁇ (R11+R12)/(R11-R12) ⁇ 23.96, 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.
  • the on-axis thickness of the sixth lens L6 is d11, which satisfies the following relationship: 0.04 ⁇ d11/TTL ⁇ 0.12, which is beneficial to realize ultra-thinness.
  • the image side surface of the seventh lens L7 is concave at the paraxial position.
  • the focal length f7 of the seventh lens L7 satisfies the following relational expression: -7.45 ⁇ f7/f ⁇ 9.26.
  • the system has better imaging quality and lower sensitivity.
  • the curvature radius of the seventh lens L7 is R13, and the curvature radius of the image side of the seventh lens L7 is R14, which satisfies the following relationship: -14.68 ⁇ (R13+R14)/(R13-R14) ⁇ 4.39.
  • the shape of the seven lens L7 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.
  • the on-axis thickness of the seventh lens L7 is d13, which satisfies the following relationship: 0.04 ⁇ d13/TTL ⁇ 0.19, which is beneficial to realize ultra-thinness.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 7.92 millimeters, which is beneficial to achieve ultra-thinness.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 7.56 mm.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 2.32. Large aperture, good imaging performance. Preferably, the aperture F number of the imaging optical lens 10 is less than or equal to 2.27.
  • 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 focal length of the imaging optical lens 10 is f
  • the combined focal length of the first lens L1 and the second lens L2 is f12
  • the following relationship is satisfied: -6.87 ⁇ f12/f ⁇ -0.91 .
  • the aberration and distortion of the imaging optical lens can be eliminated, and the back focal length of the imaging optical lens can be suppressed, and the miniaturization of the imaging lens system group 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 optical filter GF
  • R16 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 optical filter GF;
  • d15 the axial thickness of the optical filter GF
  • d16 the on-axis distance from the image side surface of the optical filter GF to the image surface
  • 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;
  • 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.
  • k is the conic coefficient
  • A4, A6, A8, A10, A12, A14, A16, 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.
  • 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 0.565 0.945 P4R2 0 To To P5R1 0 To To P5R2 1 1.315 To P6R1 1 0.435 To P6R2 2 0.635 1.705 P7R1 1 1.345 To P7R2 2 0.545 2.615
  • 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 1.758mm
  • the full-field image height is 3.248mm
  • the maximum angle of view of the imaging optical lens is 100.20°
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the second embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 6 shows 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.
  • P1R1 1 1.325 P1R2 0 To P2R1 0 To P2R2 0 To P3R1 0 To P3R2 0 To P4R1 0 To P4R2 1 0.985 P5R1 1 1.055 P5R2 0 To P6R1 0 To P6R2 0 To P7R1 0 To P7R2 1 1.085
  • 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, 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 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 1.356mm
  • the full-field image height is 3.248mm
  • the maximum angle of view of the imaging optical lens is 120.00°
  • 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.
  • 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, 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 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 0.985mm
  • the full-field image height is 3.248mm
  • the maximum field of view of the imaging optical lens is 134.74°
  • 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 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 470 nm, 555 nm, and 650 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.
  • the fourth embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 1.514mm
  • the full-field image height is 3.248mm
  • the maximum field of view of the imaging optical lens is 100.20°, 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 f 3.195 2.905 2.214 2.886 f1 -9.410 -4.881 -2.955 -7.071 f2 100.000 16.017 193.373 26.761 f3 6.710 2.624 4.024 2.585 f4 -31.966 -43.555 -44.176 -43.287 f5 2.474 5.685 2.543 -100.000 f6 -6.171 100.000 -3.590 -146.978 f7 -4.738 -2.824 13.676 -10.747 f12 -10.507 -7.143 -3.009 -9.911 FNO 1.82 2.14 2.25 1.91 FOV 100.20° 120.00° 134.74° 100.20° f4/f -10.01 -15.00 -19.95 -15.00 (R3+R4)/(R3-R4) -2.01 -5.00 -9.99 -9.00
  • 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). La lentille optique de caméra (10) comprend de manière séquentielle d'un côté objet à un côté image : une première lentille (L1) présentant une réfringence négative, une deuxième lentille (L2) présentant une réfringence positive, une troisième lentille (L3) présentant une réfringence positive, une quatrième lentille (L4) présentant une réfringence négative, une cinquième lentille (L5) et une sixième lentille (L6) et une septième lentille (L7) ; et les relations suivantes sont satisfaites : 100,00° ≤ FOV ≤ 135,00° ; -20,00 ≤ f4/f ≤ -10,00 ; -10,00 ≤ (R3+R4)/(R3-R4) ≤ -2,00. La lentille optique de caméra (10) peut obtenir une TTL faible tout en obtenant une performance d'imagerie élevée.
PCT/CN2019/128563 2019-12-26 2019-12-26 Lentille optique de caméra WO2021128121A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11982875B2 (en) 2020-05-29 2024-05-14 Largan Precision Co., Ltd. Image capturing lens assembly, imaging apparatus and electronic device

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US5546232A (en) * 1993-06-14 1996-08-13 Asahi Kogaku Kogyo Kabushiki Kaisha Two-group zoom lens
US5661606A (en) * 1995-01-27 1997-08-26 Nikon Corporation Zoom lens with high zoom ratio and including two lens units
CN107664816A (zh) * 2017-10-19 2018-02-06 瑞声科技(新加坡)有限公司 摄像光学镜头
CN108490589A (zh) * 2018-06-14 2018-09-04 宁波永新光学股份有限公司 一种定焦光学系统
CN109407265A (zh) * 2017-08-18 2019-03-01 佳能企业股份有限公司 光学镜头
CN209417403U (zh) * 2019-01-04 2019-09-20 江西特莱斯光学有限公司 一种大靶面超广角装置

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Publication number Priority date Publication date Assignee Title
US5546232A (en) * 1993-06-14 1996-08-13 Asahi Kogaku Kogyo Kabushiki Kaisha Two-group zoom lens
US5661606A (en) * 1995-01-27 1997-08-26 Nikon Corporation Zoom lens with high zoom ratio and including two lens units
CN109407265A (zh) * 2017-08-18 2019-03-01 佳能企业股份有限公司 光学镜头
CN107664816A (zh) * 2017-10-19 2018-02-06 瑞声科技(新加坡)有限公司 摄像光学镜头
CN108490589A (zh) * 2018-06-14 2018-09-04 宁波永新光学股份有限公司 一种定焦光学系统
CN209417403U (zh) * 2019-01-04 2019-09-20 江西特莱斯光学有限公司 一种大靶面超广角装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11982875B2 (en) 2020-05-29 2024-05-14 Largan Precision Co., Ltd. Image capturing lens assembly, imaging apparatus and electronic device

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