WO2021128235A1 - Lentille optique de caméra - Google Patents

Lentille optique de caméra Download PDF

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Publication number
WO2021128235A1
WO2021128235A1 PCT/CN2019/129024 CN2019129024W WO2021128235A1 WO 2021128235 A1 WO2021128235 A1 WO 2021128235A1 CN 2019129024 W CN2019129024 W CN 2019129024W WO 2021128235 A1 WO2021128235 A1 WO 2021128235A1
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Prior art keywords
lens
imaging optical
optical lens
ttl
curvature
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PCT/CN2019/129024
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English (en)
Chinese (zh)
Inventor
朱军彦
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/CN2019/129024 priority Critical patent/WO2021128235A1/fr
Publication of WO2021128235A1 publication Critical patent/WO2021128235A1/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 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 pixel area of photosensitive devices continues to shrink and the system's requirements for image quality continue to increase, five-element and six-element lens structures have gradually appeared in the lens.
  • design There is an urgent need for a wide-angle camera lens with excellent optical characteristics, ultra-thin and fully corrected chromatic aberrations.
  • the object of the present invention is to provide an imaging optical lens, which has good optical performance and meets the design requirements of ultra-thin and wide-angle.
  • an embodiment of the present invention provides an imaging optical lens.
  • the imaging optical lens includes, in order from the object side to the image side, a first lens 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 with positive refractive power, and a sixth lens with negative refractive power;
  • 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 distance from the image side of the second lens to the object side of the third lens is d4
  • the on-axis distance between the image side surface of the third lens and the object side surface of the fourth lens is d6, the on-axis thickness of the fifth lens is d9, and the image side surface of the fifth lens is to the sixth lens
  • the on-axis distance of the object side is d10
  • the maximum field of view of the imaging optical lens is FOV, which satisfies the following relationship: 100.00° ⁇ FOV ⁇ 135.00°; -30.00 ⁇ R1/R2 ⁇ -10.00; 0.80 ⁇ d4/ d6 ⁇ 5.00; 7.00 ⁇ d9/d10 ⁇ 22.00.
  • the object side surface of the first lens is concave on the paraxial axis, and the image side surface is concave on the paraxial axis;
  • the focal length of the imaging optical lens is f
  • the focal length of the first lens is f1
  • the focal length of the first lens is f1.
  • the on-axis thickness is d1
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -3.57 ⁇ f1/f ⁇ -1.10; 0.41 ⁇ (R1+R2)/(R1-R2) ⁇ 1.40; 0.02 ⁇ d1/TTL ⁇ 0.09.
  • the imaging optical lens satisfies the following relationship: -2.23 ⁇ f1/f ⁇ -1.37; 0.65 ⁇ (R1+R2)/(R1-R2) ⁇ 1.12; 0.04 ⁇ d1/TTL ⁇ 0.07.
  • the object side surface of the second lens is convex on the par axis, and the image side surface is concave on the par axis;
  • the focal length of the imaging optical lens is f
  • the focal length of the second lens is f2
  • the second lens object The curvature radius of the side surface 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 is TTL, and the following relationship is satisfied: 0.71 ⁇ f2/f ⁇ 2.78; -3.74 ⁇ (R3+R4)/(R3-R4) ⁇ -0.68; 0.04 ⁇ d3/TTL ⁇ 0.14.
  • the imaging optical lens satisfies the following relationship: 1.13 ⁇ f2/f ⁇ 2.22; -2.34 ⁇ (R3+R4)/(R3-R4) ⁇ -0.85; 0.07 ⁇ d3/TTL ⁇ 0.11.
  • the object side surface of the third lens is convex on the paraxial, and the image side surface is convex on the paraxial;
  • the focal length of the imaging optical lens is f
  • the focal length of the third lens is f3
  • the third lens object The curvature radius of the side surface is R5, 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: 0.75 ⁇ f3/f ⁇ 2.72; 0.20 ⁇ (R5+R6)/(R5-R6) ⁇ 1.21; 0.05 ⁇ d5/TTL ⁇ 0.15.
  • the imaging optical lens satisfies the following relationship: 1.20 ⁇ f3/f ⁇ 2.18; 0.32 ⁇ (R5+R6)/(R5-R6) ⁇ 0.97; 0.07 ⁇ d5/TTL ⁇ 0.12.
  • the object side of the fourth lens is convex on the paraxial and the image side is concave on the paraxial;
  • the focal length of the imaging optical lens is f
  • the focal length of the fourth lens is f4
  • the fourth lens is
  • the curvature radius of the side surface is R7
  • the curvature radius of the image side surface of the fourth lens is R8,
  • the axial thickness of the fourth lens is d7
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:- 5.97 ⁇ f4/f ⁇ -1.76; 1.25 ⁇ (R7+R8)/(R7-R8) ⁇ 3.99; 0.02 ⁇ d7/TTL ⁇ 0.06.
  • the imaging optical lens satisfies the following relationship: -3.73 ⁇ f4/f ⁇ -2.20; 2.00 ⁇ (R7+R8)/(R7-R8) ⁇ 3.19; 0.03 ⁇ d7/TTL ⁇ 0.05.
  • the object side surface of the fifth lens is concave on the par axis, and the image side surface is convex on the par axis;
  • the focal length of the imaging optical lens is f
  • the focal length of the fifth lens is f5
  • the fifth lens object The radius of curvature of the side surface is R9
  • the radius of curvature of the image side surface of the fifth lens is R10
  • the axial thickness of the fifth lens is d9
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.33 ⁇ f5/f ⁇ 1.13; 0.54 ⁇ (R9+R10)/(R9-R10) ⁇ 1.83; 0.10 ⁇ d9/TTL ⁇ 0.35.
  • the imaging optical lens satisfies the following relationship: 0.52 ⁇ f5/f ⁇ 0.90; 0.86 ⁇ (R9+R10)/(R9-R10) ⁇ 1.47; 0.17 ⁇ d9/TTL ⁇ 0.28.
  • the object side surface of the sixth lens is convex on the paraxial, and the image side surface is concave on the paraxial;
  • the focal length of the imaging optical lens is f
  • the focal length of the sixth lens is f6, and the sixth lens object
  • the curvature radius of the side surface is R11
  • the curvature radius of the image side surface of the sixth lens is R12
  • the axial thickness of the sixth lens is d11
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:- 1.54 ⁇ f6/f ⁇ -0.46; 0.85 ⁇ (R11+R12)/(R11-R12) ⁇ 3.09; 0.03 ⁇ d11/TTL ⁇ 0.10.
  • the imaging optical lens satisfies the following relationship: -0.96 ⁇ f6/f ⁇ -0.58; 1.36 ⁇ (R11+R12)/(R11-R12) ⁇ 2.48; 0.05 ⁇ d11/TTL ⁇ 0.08.
  • the total optical length TTL of the imaging optical lens is less than or equal to 6.40 mm.
  • the total optical length TTL of the imaging optical lens is less than or equal to 6.11 mm.
  • the aperture F number of the imaging optical lens is less than or equal to 2.27.
  • the aperture F number of the imaging optical lens is less than or equal to 2.23.
  • the focal length of the imaging optical lens is f
  • the combined focal length of the first lens and the second lens is f12
  • the following relationship is satisfied: 1.67 ⁇ f12/f ⁇ 18.73.
  • the imaging optical lens satisfies the following relationship: 2.67 ⁇ f12/f ⁇ 14.98.
  • the imaging optical lens according to the present invention has excellent optical characteristics, wide-angle and ultra-thin characteristics, 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. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention.
  • the imaging optical lens 10 includes six 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.
  • An optical element such as an optical filter GF may be provided between the sixth lens L6 and the image plane Si.
  • the maximum angle of view of the imaging optical lens 10 is defined as FOV, which satisfies the following relationship: 100.00° ⁇ FOV ⁇ 135.00° specifies the FOV of the optical system, and makes the optical system wider.
  • the on-axis thickness of the fifth lens L5 is defined as d9, and the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6 is d10, which satisfies the following relationship: 7.00 ⁇ d9/d10 ⁇ 22.00, which specifies the ratio of the thickness of the fifth lens to the air space between the fifth and sixth lenses, which helps to compress the total length of the optical system within the range of the conditional formula and achieve an ultra-thin effect.
  • 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 refractive index of the relevant lens, the total optical length of the imaging optical lens, the axial thickness and the radius of curvature satisfy the above-mentioned relational expressions, the imaging optical lens 10 can be made to have a high Performance, and meet the design requirements of low TTL.
  • the object side surface of the first lens L1 is concave on the paraxial axis, and the image side surface is concave on the paraxial axis, and has a negative refractive power.
  • the focal length of the imaging optical lens 10 is defined as f, and the focal length of the first lens L1 is f1, which satisfies the following relationship: -3.57 ⁇ f1/f ⁇ -1.10, which specifies the focal length of the first lens L1 and 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 -2.23 ⁇ f1/f ⁇ -1.37.
  • the curvature radius of the object side surface of the first lens L1 as R1 and the curvature radius of the image side surface of the first lens L1 as R2, satisfying the following relationship: 0.41 ⁇ (R1+R2)/(R1-R2) ⁇ 1.40
  • the shape of the first lens L1 is reasonably controlled so that the first lens L1 can effectively correct the spherical aberration of the system, preferably, 0.65 ⁇ (R1+R2)/(R1-R2) ⁇ 1.12.
  • the total optical length of the imaging optical lens 10 is TTL, and the on-axis thickness of the first lens L1 is d1, which satisfies the following relationship: 0.02 ⁇ d1/TTL ⁇ 0.09, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d1/TTL ⁇ 0.07 is satisfied.
  • the object side surface of the second lens L2 is convex on the paraxial axis, and the image side surface is concave on the paraxial axis, and has positive refractive power.
  • the focal length of the imaging optical lens 10 as f
  • the focal length of the second lens L2 as f2
  • the focal length of the second lens L2 which satisfies the following relationship: 0.71 ⁇ f2/f ⁇ 2.78, by controlling the positive refractive power of the second lens L2 in a reasonable range , It is helpful to correct the aberration of the optical system.
  • 1.13 ⁇ f2/f ⁇ 2.22 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: -3.74 ⁇ (R3+R4)/(R3-R4) ⁇ -0.68 , Stipulates the shape of the second lens L2.
  • R3+R4/(R3-R4) ⁇ -0.68 Stipulates the shape of the second lens L2.
  • it When it is within the range, as the lens becomes ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration.
  • it satisfies -2.34 ⁇ (R3+R4)/(R3-R4) ⁇ -0.85.
  • 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 ⁇ 0.14, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d3/TTL ⁇ 0.11 is satisfied.
  • the object side surface of the third lens L3 is convex on the paraxial axis, and the image side surface is convex on the paraxial axis, and has positive refractive power.
  • the focal length of the 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.
  • 1.20 ⁇ f3/f ⁇ 2.18 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: 0.20 ⁇ (R5+R6)/(R5-R6) ⁇ 1.21, which can be effectively controlled
  • the shape of the third lens L3 is conducive to the molding of the third lens L3.
  • the degree of deflection of the light passing through the lens can be reduced, and aberrations can be effectively reduced.
  • 0.32 ⁇ (R5+R6)/(R5-R6) ⁇ 0.97 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: 0.05 ⁇ d5/TTL ⁇ 0.15, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d5/TTL ⁇ 0.12 is satisfied.
  • the object side surface of the fourth lens L4 is convex on the paraxial axis, and the image side surface is concave on the paraxial axis, and has negative refractive power.
  • the focal length of the imaging optical lens 10 is defined as f, and the focal length of the fourth lens L4 is f4, which satisfies the following relationship: -5.97 ⁇ f4/f ⁇ -1.76.
  • the system has a relatively high Good imaging quality and low sensitivity.
  • -3.73 ⁇ f4/f ⁇ -2.20 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: 1.25 ⁇ (R7+R8)/(R7-R8) ⁇ 3.99, which is specified
  • This is the shape of the fourth lens L4.
  • it is beneficial to correct the aberration of the off-axis angle of view.
  • 2.00 ⁇ (R7+R8)/(R7-R8) ⁇ 3.19 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: 0.02 ⁇ d7/TTL ⁇ 0.06, which is beneficial to realize ultra-thinness. Preferably, 0.03 ⁇ d7/TTL ⁇ 0.05 is satisfied.
  • the object side surface of the fifth lens L5 is concave on the paraxial axis, and the image side surface is convex on the paraxial axis, and has positive refractive power.
  • the focal length of the imaging optical lens 10 is defined as f, and the focal length of the fifth lens L5 is f5, which satisfies the following relationship: 0.33 ⁇ f5/f ⁇ 1.13.
  • the limitation on the fifth lens L5 can effectively make the imaging lens
  • the light angle is gentle, reducing tolerance sensitivity.
  • 0.52 ⁇ f5/f ⁇ 0.90 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
  • the following relationship is satisfied: 0.54 ⁇ (R9+R10)/(R9-R10) ⁇ 1.83
  • the shape of the fifth lens L5 is specified.
  • it 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.
  • 0.86 ⁇ (R9+R10)/(R9-R10) ⁇ 1.47 is satisfied.
  • the axial thickness of the fifth lens L5 is d9, and the total optical length of the imaging optical lens 10 is TTL, which satisfies the following relationship: 0.10 ⁇ d9/TTL ⁇ 0.35, which is beneficial to realize ultra-thinness.
  • 0.17 ⁇ d9/TTL ⁇ 0.28 is satisfied.
  • the object side surface of the sixth lens L6 is convex on the paraxial axis, and the image side surface is concave on the paraxial axis, and has negative refractive power.
  • the focal length of the imaging optical lens 10 is defined as f, and the focal length of the sixth lens L6 is f6, which satisfies the following relationship: -1.54 ⁇ f6/f ⁇ -0.46.
  • the system has a relatively high Good imaging quality and low sensitivity.
  • -0.96 ⁇ f6/f ⁇ -0.58 is satisfied.
  • the curvature radius of the object side surface of the sixth lens L6 is R11
  • the curvature radius of the image side surface of the sixth lens L6 is R12, which satisfies the following relationship: 0.85 ⁇ (R11+R12)/(R11-R12) ⁇ 3.09, which is specified
  • This is the shape of the sixth lens L6.
  • the conditions are within the range, with the development of ultra-thin and wide-angle, it is conducive to correcting the aberration of the off-axis angle of view.
  • 1.36 ⁇ (R11+R12)/(R11-R12) ⁇ 2.48 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 ⁇ 0.10, which is beneficial to realize ultra-thinness.
  • 0.05 ⁇ d11/TTL ⁇ 0.08 is satisfied.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 6.40 mm, which is beneficial to realize ultra-thinness.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 6.11 mm.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 2.27. Large aperture, good imaging performance. Preferably, the aperture F number of the imaging optical lens 10 is less than or equal to 2.23.
  • 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, which satisfies the following relationship: 1.67 ⁇ f12/f ⁇ 18.73, under the condition Within the range of the formula, the aberration and distortion of the imaging optical lens 10 can be eliminated, the back focal length of the imaging optical lens 10 can be suppressed, and the miniaturization of the imaging lens system group can be maintained.
  • it satisfies 2.67 ⁇ f12/f ⁇ 14.98.
  • 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 optical filter GF
  • R14 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 optical filter GF;
  • d14 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;
  • 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, 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 the image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and the image side of the sixth lens L6, respectively.
  • the corresponding data in the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • the data corresponding to the “stationary point position” column is the vertical distance from the stationary point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • FIG. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 10 of the first embodiment.
  • the field curvature S in FIG. 4 is the field curvature in the sagittal direction, and T is the field curvature in the meridian direction. song.
  • Table 13 shows the values corresponding to the various values in each of Examples 1, 2, and 3 and the parameters that have been specified in the conditional expressions.
  • the first embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 0.982mm
  • the full-field image height is 2.70mm
  • the maximum field of view of the imaging optical lens is 100.00°, wide-angle, ultra-thin, and its axis and axis
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the second embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 6 shows the aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • Table 7 and Table 8 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
  • 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 0.939mm
  • the full-field image height is 2.70mm
  • the maximum field of view of the imaging optical lens is 111.60°, wide-angle, ultra-thin, and its axis and axis
  • the external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 11 and Table 12 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 30 of the third embodiment of the present invention.
  • 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.
  • the entrance pupil diameter of the imaging optical lens is 0.932mm
  • the full-field image height is 3.00mm
  • the maximum angle of view of the imaging optical lens is 134.60°, 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 FOV 100.00 111.60 134.60 R1/R2 -10.01 -29.99 -10.01 d4/d6 4.93 0.80 5.00 d9/d10 11.79 21.65 7.22 f 2.165 2.067 2.052 f1 -3.864 -3.603 -3.379 f2 3.058 3.831 3.084 f3 3.837 3.106 3.724 f4 -5.920 -5.447 -6.124 f5 1.534 1.347 1.539 f6 -1.643 -1.438 -1.579 f12 7.218 25.808 9.489 Fno 2.21 2.20 2.20
  • Fno is the aperture F number of the imaging optical lens
  • f12 is the combined focal length of the first lens and the second 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) ayant une puissance de réfraction négative, une deuxième lentille (L2) ayant une réfringence positive, une troisième lentille (L3) ayant une réfringence positive, une quatrième lentille (L4) ayant une puissance de réfraction négative, une cinquième lentille (L5) ayant une puissance de réfraction positive, et une sixième lentille (L6) ayant une puissance de réfraction négative, les expressions relationnelles suivantes étant satisfaites : 100,00° ≤ FOV ≤ 135,00° ; -30,00 ≤ R1/R2 ≤ -10,00 ; 0,80 ≤ d4/d6 ≤ 5,00 ; et 7,00 ≤ d9/d10 ≤ 22,00. La lentille optique de caméra (10) peut obtenir une TTL faible tout en obtenant des performances d'imagerie élevées.
PCT/CN2019/129024 2019-12-27 2019-12-27 Lentille optique de caméra WO2021128235A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205049802U (zh) * 2015-10-20 2016-02-24 浙江舜宇光学有限公司 超广角镜头
CN108614346A (zh) * 2016-12-13 2018-10-02 新巨科技股份有限公司 六片式广角镜片组
KR20190080526A (ko) * 2017-12-28 2019-07-08 오필름코리아(주) 촬상 광학계
CN110297312A (zh) * 2019-06-29 2019-10-01 瑞声科技(新加坡)有限公司 摄像光学镜头
CN110297314A (zh) * 2019-06-29 2019-10-01 瑞声科技(新加坡)有限公司 摄像光学镜头
CN110596857A (zh) * 2019-08-16 2019-12-20 江西联创电子有限公司 广角镜头及成像设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205049802U (zh) * 2015-10-20 2016-02-24 浙江舜宇光学有限公司 超广角镜头
CN108614346A (zh) * 2016-12-13 2018-10-02 新巨科技股份有限公司 六片式广角镜片组
KR20190080526A (ko) * 2017-12-28 2019-07-08 오필름코리아(주) 촬상 광학계
CN110297312A (zh) * 2019-06-29 2019-10-01 瑞声科技(新加坡)有限公司 摄像光学镜头
CN110297314A (zh) * 2019-06-29 2019-10-01 瑞声科技(新加坡)有限公司 摄像光学镜头
CN110596857A (zh) * 2019-08-16 2019-12-20 江西联创电子有限公司 广角镜头及成像设备

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