WO2021127844A1 - Lentille optique photographique - Google Patents

Lentille optique photographique Download PDF

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Publication number
WO2021127844A1
WO2021127844A1 PCT/CN2019/127432 CN2019127432W WO2021127844A1 WO 2021127844 A1 WO2021127844 A1 WO 2021127844A1 CN 2019127432 W CN2019127432 W CN 2019127432W WO 2021127844 A1 WO2021127844 A1 WO 2021127844A1
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Prior art keywords
lens
imaging optical
curvature
radius
ttl
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PCT/CN2019/127432
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English (en)
Chinese (zh)
Inventor
姚艳霞
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/127432 priority Critical patent/WO2021127844A1/fr
Publication of WO2021127844A1 publication Critical patent/WO2021127844A1/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 miniaturized camera lens with image quality has become the mainstream in the current market.
  • the lenses traditionally mounted on mobile phone cameras often adopt three-element, four-element, or even five-element or six-element lens structures.
  • the seven-element lens structure gradually appears in the lens design.
  • the seven-element lens has good optical performance, its optical power, lens spacing and lens shape settings are still unreasonable, resulting in the lens structure having good optical performance, but cannot meet the requirements of large aperture, Design requirements for ultra-thin and long focal length.
  • the object of the present invention is to provide an imaging optical lens, which has good optical performance while meeting the design requirements of large aperture, ultra-thinness, and long focal length.
  • an embodiment of the present invention provides the imaging optical lens, which includes in order from the object side to the image side: a first lens with a positive refractive power, a second lens with a negative refractive power, and a second lens with a negative refractive power.
  • a first lens with a positive refractive power a positive refractive power
  • a second lens with a negative refractive power a second lens with a negative refractive power.
  • Three lenses a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with negative refractive power, and a seventh lens with positive refractive power;
  • the Abbe number of the first lens is v1
  • the Abbe number of the second lens is v2
  • the refractive index of the sixth lens is n6
  • the axial thickness of the sixth lens is d11
  • the The on-axis distance between the image side surface of the five lens and the object side surface of the sixth lens is d10, which satisfies the following relationship:
  • 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 following relationship is satisfied:
  • the focal length of the imaging optical lens is f
  • 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 axial thickness of the first lens is d1
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
  • the focal length of the imaging optical lens is f
  • the focal length of the second lens is f2
  • the radius of curvature of the object side of the second lens is R3
  • the radius of curvature of the image side of the second lens is R4, so
  • the on-axis thickness of the second lens is d3
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
  • the focal length of the imaging optical lens is f
  • 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, so
  • the on-axis thickness of the third lens is d5
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
  • 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 fourth lens is R7
  • the radius of curvature of the image side of the fourth lens is R8, so
  • 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:
  • the focal length of the imaging optical lens is f
  • 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 imaging optical lens is TTL, and the following relationship is satisfied:
  • the focal length of the imaging optical lens is f
  • 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
  • the focal length of the imaging optical lens is f
  • the focal length of the seventh lens is f7
  • the radius of curvature of the object side of the seventh lens is R13
  • the radius of curvature of the image side of the seventh lens is R14
  • the axial thickness of the seventh lens is d13
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
  • the effective focal length of the imaging optical lens is EFL
  • the total optical length of the imaging optical lens is TTL
  • the following relationship is satisfied:
  • the imaging optical lens according to the present invention has good optical performance, and has the characteristics of large aperture, long focal length, and ultra-thinness, and is especially suitable for mobile phones composed of high-pixel CCD, CMOS and other imaging elements.
  • Camera lens assembly and WEB camera lens are examples of camera lens.
  • FIG. 1 is a schematic diagram of the structure of an imaging optical lens of the first embodiment
  • 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 the imaging optical lens of the second embodiment
  • 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 the imaging optical lens of the third embodiment.
  • 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 the imaging optical lens of the fourth embodiment.
  • 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: an aperture S1, a first lens L1 with a positive refractive power, a second lens L2 with a negative refractive power, a third lens L3, and a third lens L3 with a positive refractive power.
  • a fourth lens L4 having a refractive power
  • a fifth lens L5 having a negative refractive power
  • a sixth lens L6 having a negative refractive power
  • a seventh lens L7 having a positive refractive power.
  • An optical element such as an optical filter GF may be provided between the seventh lens L7 and the image plane Si.
  • the first lens is made of glass
  • the second lens is made of plastic
  • the third lens is made of plastic
  • the fourth lens is made of plastic
  • the fifth lens is made of plastic
  • the sixth lens It is made of glass
  • the seventh lens is made of plastic.
  • the Abbe number of the first lens L1 is defined as v1
  • the Abbe number of the second lens L2 is defined as v2, which satisfies the following relationship: 2.80 ⁇ v1/v2 ⁇ 4.30;
  • the ratio of the Abbe number of one lens L1 to the Abbe number of the second lens L2 within this range is more conducive to the development of ultra-thinness, and is also conducive to correcting aberrations.
  • it satisfies 2.84 ⁇ v1/v2 ⁇ 4.25.
  • the refractive index of the sixth lens L6 is n6, which satisfies the following relational expression: 1.70 ⁇ n6 ⁇ 2.20, which specifies the refractive index of the sixth lens L6, which helps to improve the performance of the optical system within the range of the conditional expression. Preferably, it satisfies 1.70 ⁇ n6 ⁇ 2.17.
  • the on-axis thickness of the sixth lens L6 is d11, 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: 3.00 ⁇ d10/d11 ⁇ 10.00 , Specifies the ratio of the on-axis distance of the fifth lens L5 to the object side of the sixth lens L6 to the on-axis thickness of the sixth lens L6, which helps to compress the total length of the optical system within the scope of the conditional expression , To achieve ultra-thin effect.
  • the curvature radius of the object side surface of the fourth lens L4 is defined as R7, and the curvature radius of the image side surface of the fourth lens L4 is R8, and the following relationship is satisfied: 5.00 ⁇ R7/R8 ⁇ 15.00, and the fourth lens L4 is reasonably specified
  • the shape of is within the range specified by the conditional formula, which is helpful for correcting the aberration of the off-axis angle of view.
  • the focal length of the imaging optical lens is defined as f
  • the focal length of the first lens L1 is f1
  • the following relationship is satisfied: 0.17 ⁇ f1/f ⁇ 0.58, which specifies the ratio of the positive refractive power of the first lens L1 to the overall focal length .
  • the first lens L1 has an appropriate positive refractive power, which is beneficial to reduce system aberrations, and at the same time, is beneficial to the development of ultra-thin lens and long focal length.
  • it satisfies 0.28 ⁇ f1/f ⁇ 0.46.
  • 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, which satisfies the following relationship: -2.34 ⁇ (R1+R2)/(R1-R2) ⁇ -0.68 ;
  • it satisfies -1.46 ⁇ (R1+R2)/(R1-R2) ⁇ -0.85.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens is TTL, which satisfies the following relationship: 0.08 ⁇ d1/TTL ⁇ 0.26, which is beneficial to realize ultra-thinness.
  • 0.12 ⁇ d1/TTL ⁇ 0.21 is satisfied.
  • the focal length of the second lens L2 is defined as f2, which satisfies the following relationship: -1.03 ⁇ f2/f ⁇ -0.29.
  • f2 The focal length of the second lens L2 is defined as f2, which satisfies the following relationship: -1.03 ⁇ f2/f ⁇ -0.29.
  • 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, satisfying the following relationship: 0.51 ⁇ (R3+R4)/(R3-R4) ⁇ 2.24,
  • the shape of the second lens L2 is specified, and when it is within the range, it is beneficial to correct the problem of axial chromatic aberration. Preferably, 0.81 ⁇ (R3+R4)/(R3-R4) ⁇ 1.79 is satisfied.
  • the on-axis thickness of the second lens L2 is d3, which satisfies the following relationship: 0.01 ⁇ d3/TTL ⁇ 0.05, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d3/TTL ⁇ 0.04 is satisfied.
  • the focal length of the third lens L3 is defined as f3, and satisfies the following relational expression: -4.20 ⁇ f3/f ⁇ 39.18.
  • the reasonable distribution of optical power enables the system to have better imaging quality and lower sensitivity. Preferably, it satisfies -2.62 ⁇ f3/f ⁇ 31.34.
  • 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: 1.50 ⁇ (R5+R6)/(R5-R6) ⁇ 29.99,
  • the shape of the third lens L3 is specified, and within the specified range of the conditional expression, the degree of deflection of the light passing through the lens can be relaxed, and aberrations can be effectively reduced. Preferably, it satisfies 2.40 ⁇ (R5+R6)/(R5-R6) ⁇ 23.99.
  • the on-axis thickness of the third lens L3 is d5, which satisfies the following relationship: 0.02 ⁇ d5/TTL ⁇ 0.05, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d5/TTL ⁇ 0.04 is satisfied.
  • the focal length of the fourth lens L4 is defined as f4, which satisfies the following relationship: 0.25 ⁇ f4/f ⁇ 15.67, which specifies the ratio of the focal length of the fourth lens L4 to the focal length of the system, which helps to improve the performance of the optical system within the scope of the condition .
  • it satisfies 0.40 ⁇ f4/f ⁇ 12.54.
  • 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, and the following relationship is satisfied: 0.57 ⁇ (R7+R8)/(R7-R8) ⁇ 2.25 .
  • the shape of the fourth lens L4 is specified, and when it is within the range, it is beneficial to correct problems such as aberrations of the off-axis angle of view. Preferably, it satisfies 0.91 ⁇ (R7+R8)/(R7-R8) ⁇ 1.80.
  • the axial thickness of the fourth lens L4 is d7, which satisfies the following relationship: 0.02 ⁇ d7/TTL ⁇ 0.06, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d7/TTL ⁇ 0.05 is satisfied.
  • the focal length of the fifth lens L5 is defined as f5, which satisfies the following relationship: -2.00 ⁇ f5/f ⁇ -0.20.
  • the limitation of the fifth lens L5 can effectively make the light angle of the camera lens smooth and reduce the tolerance sensitivity. Preferably, it satisfies -1.25 ⁇ f5/f ⁇ -0.25.
  • the radius of curvature of the object side surface of the fifth lens L5 is R9, and the radius of curvature of the image side surface of the fifth lens L5 is R10, and the following relationship is satisfied: -3.44 ⁇ (R9+R10)/(R9-R10) ⁇ -0.19.
  • the shape of the fifth lens L5 is specified, and when it is within the range, it is beneficial to correct problems such as aberrations of the off-axis angle of view. Preferably, it satisfies -2.15 ⁇ (R9+R10)/(R9-R10) ⁇ -0.24.
  • the on-axis thickness of the fifth lens L5 is d9, which satisfies the following relationship: 0.01 ⁇ d9/TTL ⁇ 0.05, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d9/TTL ⁇ 0.04 is satisfied.
  • the focal length of the sixth lens L6 is defined as f6, which satisfies the following relational expression: -1.00 ⁇ f6/f ⁇ -0.21.
  • the system has better imaging quality and Lower sensitivity.
  • it satisfies -0.63 ⁇ f6/f ⁇ -0.26.
  • the radius of curvature of the object side surface of the sixth lens L6 is R11, and the radius of curvature of the image side surface of the sixth lens L6 is R12, and the following relationship is satisfied: -2.42 ⁇ (R11+R12)/(R11-R12) ⁇ 1.38.
  • the shape of the sixth lens L6 is stipulated. When the condition is within the range, it is helpful to correct the aberration of the off-axis angle of view. Preferably, it satisfies -1.51 ⁇ (R11+R12)/(R11-R12) ⁇ 1.10.
  • the on-axis thickness of the sixth lens L6 is d11, which satisfies the following relationship: 0.01 ⁇ d11/TTL ⁇ 0.08, which is beneficial to realize ultra-thinness.
  • 0.02 ⁇ d11/TTL ⁇ 0.06 is satisfied.
  • the focal length of the seventh lens L7 is defined as f7, which satisfies the following relational formula: 0.19 ⁇ f7/f ⁇ 0.67.
  • f7 The focal length of the seventh lens L7
  • the system has better imaging quality and lower Sensitivity.
  • it satisfies 0.31 ⁇ f7/f ⁇ 0.54.
  • the curvature radius of the object side surface of the seventh lens L7 is R13
  • the curvature radius of the image side surface of the seventh lens L7 is R14
  • the following relationship is satisfied: -0.12 ⁇ (R13+R14)/(R13-R14) ⁇ 1.36.
  • the shape of the seventh lens L7 is the shape of the seventh lens L7.
  • it is beneficial to correct the aberration of the off-axis angle of view.
  • it satisfies -0.07 ⁇ (R13+R14)/(R13-R14) ⁇ 1.09.
  • the on-axis thickness of the seventh lens L7 is d13, which satisfies the following relationship: 0.04 ⁇ d13/TTL ⁇ 0.17, which is beneficial to realize ultra-thinness.
  • 0.06 ⁇ d13/TTL ⁇ 0.14 is satisfied.
  • the effective focal length of the camera lens is defined as EFL, which satisfies the following relationship: EFL/TTL ⁇ 1.37, which is beneficial to realize ultra-thinness.
  • the total optical length TTL of the imaging optical lens 10 is less than or equal to 7.86 mm, which is beneficial to realize ultra-thinness.
  • the total optical length TTL is less than or equal to 7.50 mm.
  • 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 can have good optical performance, and at the same time, it can satisfy the requirements of large aperture, long focal length, and ultra-thinness.
  • 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, A18, A20 are aspherical coefficients.
  • the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1).
  • the present invention is not limited to the aspheric polynomial form represented by the formula (1).
  • Table 3 and Table 4 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 10 of the first embodiment of the present invention.
  • P1R1 and P1R2 represent the object side and image side of the first lens L1 respectively
  • P2R1 and P2R2 represent the object side and image side of the second lens L2 respectively
  • P3R1 and P3R2 represent the object side and image side of the third lens L3 respectively.
  • P4R1, P4R2 represent the object side and image side of the fourth lens L4
  • P5R1, P5R2 represent the object side and image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and image side of the sixth lens L6
  • P7R1 P7R2 represents the object side and image side of the seventh lens L7, respectively.
  • 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.
  • Stagnation position 1 Stagnation position 2 P1R1 To To To P1R2 1 1.365 To P2R1 To To To To P3R1 To To To To To P3R2 To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To P4R2 To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To To
  • FIG. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 10 of the first embodiment.
  • the field curvature S in FIG. 4 is the field curvature in the sagittal direction, and T is the field curvature in the meridian direction. song.
  • Table 17 shows the values corresponding to the various numerical values in each of the first, second, third, and fourth embodiments and the parameters that have been specified in the conditional expressions.
  • the first embodiment satisfies each conditional expression.
  • the entrance pupil diameter of the imaging optical lens is 3.265mm
  • the full-field image height is 2.040mm
  • the diagonal field angle is 23.63°. It has a telephoto lens and is ultra-thin. The off-axis 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.
  • the structure of the imaging optical lens 20 of the second embodiment is shown in FIG. 5, 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, 470 nm, and 430 nm pass through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 20 of the second embodiment.
  • the second embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 3.265mm
  • the full-field image height is 2.040mm
  • the diagonal field angle is 24.00°. It has a telephoto lens and ultra-thin lens.
  • the off-axis 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. Please refer to FIG. 9 for the structure of the imaging optical lens 30 of the third embodiment. 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 Fig. 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, 470 nm, and 430 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 lens of this embodiment satisfies the above-mentioned conditional expression.
  • the entrance pupil diameter of the imaging optical lens is 3.266mm
  • the full-field image height is 2.040mm
  • the diagonal field angle is 23.80°. It has a telephoto lens and is ultra-thin. The off-axis 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. Please refer to FIG. 13 for the structure of the imaging optical lens 40 of the fourth embodiment. 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 650 nm, 610 nm, 555 nm, 510 nm, 470 nm, and 430 nm pass through the imaging optical lens 40 of the fourth embodiment.
  • FIG. 16 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 40 of the fourth embodiment.
  • Table 17 lists the numerical values corresponding to each conditional expression in this embodiment according to the above-mentioned conditional expressions. Obviously, the imaging optical lens of this embodiment satisfies the above-mentioned conditional expression.
  • the entrance pupil diameter of the imaging optical lens is 3.267mm
  • the full-field image height is 2.040mm
  • the diagonal field angle is 23.60°. It has a telephoto lens and is ultra-thin. The off-axis chromatic aberration is fully corrected and has excellent optical characteristics.
  • Example one Example two Example three Example four v1/v2 4.21 4.21 2.88 3.96 n6 1.73 1.70 2.14 1.75 d10/d11 3.00 10.00 5.59 5.28 f 9.794 9.794 9.799 9.800 f1 3.782 3.755 3.404 3.652 f2 -5.060 -4.488 -4.596 -4.208 f3 -14.180 255.799 -14.533 -20.574 f4 4.838 102.332 6.641 6.289 f5 -2.938 -9.791 -3.508 -3.506 f6 -4.233 -3.100 -4.600 -4.909 f7 3.784 4.247 3.950 4.395 f12 5.908 6.566 5.714 6.247 Fno 3.00 3.00 3.00 3.00 3.00 3.00
  • 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 photographique (10) qui se rapporte au domaine des lentilles optiques. La lentille optique photographique (10) comprend de manière séquentielle, d'un côté objet à un côté image : une première lentille (L1) présentant une réfringence positive, une deuxième lentille (L2) présentant une réfringence négative, une troisième lentille (L3), une quatrième lentille (L4) présentant une réfringence positive, une cinquième lentille (L5) présentant une réfringence négative, une sixième lentille (L6) présentant une réfringence négative et une septième lentille (L7) présentant une réfringence positive ; les relations suivantes sont satisfaites : 2,80 ≤ v1/v2 ≤ 4,30, 1,70 ≤ n6 ≤ 2,20 et 3,00 ≤ d10/d11 ≤ 10,00. La lentille optique photographique (10) présente une bonne performance optique et satisfait des exigences de conception de grande ouverture, de grand angle et d'ultra-minceur.
PCT/CN2019/127432 2019-12-23 2019-12-23 Lentille optique photographique WO2021127844A1 (fr)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243466A (en) * 1991-12-24 1993-09-07 Industrial Technology Research Institute Zoom lens
US20170227734A1 (en) * 2016-02-04 2017-08-10 Largan Precision Co., Ltd. Photographing optical lens assembly, image capturing device and electronic device
CN108107552A (zh) * 2017-11-17 2018-06-01 玉晶光电(厦门)有限公司 光学成像镜头
CN108227151A (zh) * 2018-03-16 2018-06-29 浙江舜宇光学有限公司 光学成像镜片组
CN108351490A (zh) * 2015-11-02 2018-07-31 三星电子株式会社 光学透镜组件、设备和图像形成方法
CN110187469A (zh) * 2018-02-22 2019-08-30 大立光电股份有限公司 成像光学镜头、取像装置及电子装置
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243466A (en) * 1991-12-24 1993-09-07 Industrial Technology Research Institute Zoom lens
CN108351490A (zh) * 2015-11-02 2018-07-31 三星电子株式会社 光学透镜组件、设备和图像形成方法
US20170227734A1 (en) * 2016-02-04 2017-08-10 Largan Precision Co., Ltd. Photographing optical lens assembly, image capturing device and electronic device
CN108107552A (zh) * 2017-11-17 2018-06-01 玉晶光电(厦门)有限公司 光学成像镜头
CN110187469A (zh) * 2018-02-22 2019-08-30 大立光电股份有限公司 成像光学镜头、取像装置及电子装置
CN108227151A (zh) * 2018-03-16 2018-06-29 浙江舜宇光学有限公司 光学成像镜片组
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

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