WO2021127914A1 - Lentille optique de caméra - Google Patents

Lentille optique de caméra Download PDF

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Publication number
WO2021127914A1
WO2021127914A1 PCT/CN2019/127609 CN2019127609W WO2021127914A1 WO 2021127914 A1 WO2021127914 A1 WO 2021127914A1 CN 2019127609 W CN2019127609 W CN 2019127609W WO 2021127914 A1 WO2021127914 A1 WO 2021127914A1
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Prior art keywords
lens
imaging optical
curvature
radius
ttl
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PCT/CN2019/127609
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English (en)
Chinese (zh)
Inventor
王康
孙雯
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诚瑞光学(常州)股份有限公司
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Priority to PCT/CN2019/127609 priority Critical patent/WO2021127914A1/fr
Publication of WO2021127914A1 publication Critical patent/WO2021127914A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Definitions

  • the present invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal equipment such as smart phones and digital cameras, as well as imaging devices such as monitors and PC lenses.
  • the photosensitive devices of general photographic lenses are nothing more than photosensitive coupled devices (CCD) or complementary metal oxide semiconductor devices (Complementary Metal).
  • CCD photosensitive coupled devices
  • CMOS Sensor complementary metal oxide semiconductor devices
  • the pixel size of photosensitive devices has been reduced, and the development trend of current electronic products with good functions, thin and short appearance, therefore, has a good
  • the miniaturized camera lens with image quality has become the mainstream in the current market.
  • the lenses traditionally mounted on mobile phone cameras mostly adopt a three-element or four-element lens structure.
  • the object of the present invention is to provide an imaging optical lens that can meet the requirements of 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 a first lens, a second lens, a third lens, and a fourth lens in order from the object side to the image side.
  • the focal length of the imaging optical lens is f
  • the focal length of the first lens is f1
  • the object side curvature radius of the second lens is R3
  • the image side curvature radius of the second lens is R4, and the fourth lens
  • the object side curvature radius of the lens is R7
  • the image side curvature radius of the fourth lens is R8, the on-axis distance from the image side surface of the first lens to the object side surface of the second lens is d2
  • the second lens The on-axis thickness of the lens is d3, which satisfies the following relationship:
  • the focal length of the sixth lens is f6, and satisfies the following relationship:
  • the radius of curvature of the object side surface of the first lens is R1
  • the radius of curvature of the image side surface of the first lens is R2
  • the axial thickness of the first lens is d1
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • the focal length of the second lens is f2
  • the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:
  • the focal length of the third lens is f3
  • the radius of curvature of the object side of the third lens is R5
  • the radius of curvature of the image side of the third lens is R6, and the on-axis thickness of the third lens is d5
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship:
  • the focal length of the fourth lens is f4
  • the axial thickness of the fourth lens is d7
  • the total optical length of the imaging optical lens is TTL
  • the focal length of the fifth lens is f5
  • the radius of curvature of the object side of the fifth lens is R9
  • the radius of curvature of the image side of the fifth lens is R10
  • the on-axis thickness of the fifth lens is d9
  • the total optical length of the camera optical lens is TTL, and satisfies the following relationship:
  • the 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 axial thickness of the sixth lens is d11
  • the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:
  • 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 camera optical lens is TTL, and satisfies the following relationship:
  • the combined focal length of the first lens and the second lens is f12, which satisfies the following relationship:
  • the imaging optical lens according to the present invention satisfies good optical performance such as large aperture, wide-angle and ultra-thin, and is especially suitable for mobile phone camera lens components composed of high-pixel CCD, CMOS and other imaging elements. WEB camera lens.
  • FIG. 1 is a schematic diagram of the structure of an imaging optical lens according to a first embodiment of the present invention
  • FIG. 2 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 1;
  • FIG. 3 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 1;
  • FIG. 4 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 1;
  • FIG. 5 is a schematic diagram of the structure of an imaging optical lens according to a second embodiment of the present invention.
  • FIG. 6 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 5;
  • FIG. 7 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 5;
  • FIG. 8 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 5;
  • FIG. 9 is a schematic diagram of the structure of an imaging optical lens according to a third embodiment of the present invention.
  • FIG. 10 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 9;
  • FIG. 11 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 9;
  • FIG. 12 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 9;
  • FIG. 13 is a schematic diagram of the structure of an imaging optical lens according to a fourth embodiment of the present invention.
  • FIG. 14 is a schematic diagram of axial aberration of the imaging optical lens shown in FIG. 13;
  • FIG. 15 is a schematic diagram of the chromatic aberration of magnification of the imaging optical lens shown in FIG. 13;
  • FIG. 16 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 13.
  • FIG. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention.
  • the imaging optical lens 10 includes 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, a third lens L3, an aperture S1, 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 between the seventh lens L7 and the image plane Si.
  • the focal length of the overall imaging optical lens 10 is f
  • the focal length of the first lens L1 is f1, -3.00 ⁇ f1/f ⁇ -1.00, by specifying the focal length f1 of the first lens L1 and the focal length f of the imaging optical lens 10
  • the ratio within the range specified by the conditional formula, helps increase the field of view.
  • the object side curvature radius of the second lens L2 is defined as R3, and the image side curvature radius of the second lens L2 is R4, -15.00 ⁇ (R3+R4)/(R3-R4) ⁇ -1.50, which is specified
  • the shape of the second lens L2, within the range specified by the conditional formula, can relax the degree of deflection of the light passing through the lens and effectively reduce aberrations.
  • the object-side curvature radius of the fourth lens L4 as R7
  • the image-side curvature radius of the fourth lens L4 as R8, -3.00 ⁇ R7/R8 ⁇ -1.00.
  • the first lens can be effectively controlled.
  • the shape of the four-lens L4 improves imaging performance.
  • the on-axis distance from the image side of the first lens L1 to the object side of the second lens L2 as d2, and the on-axis thickness of the second lens L2 as d3, 1.50 ⁇ d2/d3 ⁇ 5.00, which specifies
  • the ratio of the air separation distance between the first lens L1 and the second lens L2 to the axial thickness of the second lens L2 is within the range specified by the conditional formula, which is helpful for lens processing and lens assembly.
  • the imaging optical lens 10 of the present invention When the focal length of the imaging optical lens 10 of the present invention, the focal length of each lens, the on-axis distance from the image side of the relevant lens to the object side, and the on-axis thickness satisfy the above-mentioned relationship, the imaging optical lens 10 can be made to have a wide-angle, large aperture And ultra-thin good optical performance.
  • the focal length of the sixth lens L6 is f6, 1.20 ⁇ f6/f ⁇ 3.00, which specifies the ratio of the focal length of the sixth lens L6 to the focal length of the imaging optical lens 10, which contributes to field curvature within the range specified by the conditional expression Correction to improve image quality.
  • the curvature radius of the object side surface of the first lens L1 is R1
  • the curvature radius of the image side surface of the first lens L1 is R2, 0.47 ⁇ (R1+R2)/(R1-R2) ⁇ 2.03, which specifies the first lens L1
  • the shape of is within the range specified by the conditional formula, so that the first lens L1 can effectively correct the spherical aberration of the system.
  • 0.76 ⁇ (R1+R2)/(R1-R2) ⁇ 1.62 is satisfied.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens 10 is TTL, 0.03 ⁇ d1/TTL ⁇ 0.14, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d1/TTL ⁇ 0.12 is satisfied.
  • the focal length of the second lens is f2, 1.16 ⁇ f2/f ⁇ 27.3.
  • 1.86 ⁇ f2/f ⁇ 21.84 is satisfied.
  • the on-axis thickness of the second lens is d3, 0.02 ⁇ d3/TTL ⁇ 0.14, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d3/TTL ⁇ 0.11 is satisfied.
  • the focal length of the third lens is f3, 2.20 ⁇ f3/f ⁇ 56.95, and the reasonable distribution of optical power enables the system to have better imaging quality and lower sensitivity.
  • the curvature radius of the object side surface of the third lens is R5, and the curvature radius of the image side surface of the third lens is R6, -848.77 ⁇ (R5+R6)/(R5-R6) ⁇ -4.07, which can effectively control the third lens
  • the shape of L3 is conducive to the molding of the third lens L3.
  • the degree of deflection of the light passing through the lens can be eased, and aberrations can be effectively reduced.
  • it satisfies -530.48 ⁇ (R5+R6)/(R5-R6) ⁇ -5.09.
  • the on-axis thickness of the third lens is d5, 0.03 ⁇ d5/TTL ⁇ 0.11, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d5/TTL ⁇ 0.09 is satisfied.
  • the focal length of the fourth lens is f4, 0.56 ⁇ f4/f ⁇ 2.97, and the reasonable distribution of optical power enables the system to have better imaging quality and lower sensitivity.
  • f4/f ⁇ 2.39 is satisfied.
  • 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, 0.01 ⁇ (R7+R8)/(R7-R8) ⁇ 0.74, which specifies that it is the fourth lens L4
  • 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.
  • 0.02 ⁇ (R7+R8)/(R7-R8) ⁇ 0.59 is satisfied.
  • the on-axis thickness of the fourth lens is d7, 0.06 ⁇ d7/TTL ⁇ 0.25, which is beneficial to realize ultra-thinness.
  • 0.10 ⁇ d7/TTL ⁇ 0.20 is satisfied.
  • the focal length of the fifth lens is f5, -9.02 ⁇ f5/f ⁇ -1.27, and the limitation of the fifth lens L5 can effectively make the light angle of the imaging lens smooth and reduce the tolerance sensitivity. Preferably, it satisfies -5.64 ⁇ f5/f ⁇ -1.59.
  • the radius of curvature of the object side surface of the fifth lens is R9
  • the radius of curvature of the image side surface of the fifth lens is R10, -3.01 ⁇ (R9+R10)/(R9-R10) ⁇ -0.04
  • 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.
  • it satisfies -1.88 ⁇ (R9+R10)/(R9-R10) ⁇ -0.06.
  • the on-axis thickness of the fifth lens is d9, 0.02 ⁇ d9/TTL ⁇ 0.07, which is beneficial to realize ultra-thinness.
  • 0.03 ⁇ d9/TTL ⁇ 0.06 is satisfied.
  • the radius of curvature of the object side surface of the sixth lens is R11
  • the radius of curvature of the image side surface of the sixth lens is R12
  • 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.
  • it satisfies -0.30 ⁇ (R11+R12)/(R11-R12) ⁇ 0.74.
  • the on-axis thickness of the sixth lens is d11, 0.04 ⁇ d11/TTL ⁇ 0.22, which is beneficial to realize ultra-thinness.
  • 0.07 ⁇ d11/TTL ⁇ 0.17 is satisfied.
  • the focal length of the seventh lens is f7, -47.51 ⁇ f7/f ⁇ -1.59, and the reasonable distribution of optical power enables the system to have better imaging quality and lower sensitivity.
  • it satisfies -29.70 ⁇ f7/f ⁇ -1.98.
  • the radius of curvature of the object side surface of the seventh lens is R13
  • the radius of curvature of the image side surface of the seventh lens is R14, 1.50 ⁇ (R13+R14)/(R13-R14) ⁇ 16.38, which is defined as that of the seventh lens L7
  • 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.
  • it satisfies 2.39 ⁇ (R13+R14)/(R13-R14) ⁇ 13.10.
  • the on-axis thickness of the seventh lens is d13, 0.03 ⁇ d13/TTL ⁇ 0.13, which is beneficial to realize ultra-thinness.
  • 0.04 ⁇ d13/TTL ⁇ 0.11 is satisfied.
  • the combined focal length of the first lens L1 and the second lens L2 is defined as f12, which satisfies the following relational expression: -8.73 ⁇ f12/f ⁇ -2.96.
  • the aforementioned The aberration and distortion of the imaging optical lens 10 can suppress the back focal length of the imaging optical lens 10 and maintain the miniaturization of the imaging lens system group.
  • the ratio of the total optical length TTL of the imaging optical lens 10 to the image height IH of the imaging optical lens 10 TTL/IH ⁇ 2.05, which is conducive to achieving ultra-thinness.
  • the angle of view FOV of the imaging optical lens 10 in the diagonal direction is greater than or equal to 136°, which is beneficial to realize a wide angle.
  • the aperture F number of the imaging optical lens 10 is less than or equal to 2.41. Large aperture, good imaging performance.
  • the overall optical length TTL of the overall imaging optical lens 10 can be shortened as much as possible, and the characteristics of miniaturization can be maintained.
  • the imaging optical lens 10 of the present invention will be described below with an example.
  • the symbols described in each example are as follows.
  • the unit of focal length, distance on axis, radius of curvature, thickness on axis, position of inflection point, and position of stagnation point is mm.
  • TTL 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.
  • 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 Examples 1, 2, 3, and 4 and the parameters specified in the conditional expressions.
  • the first embodiment satisfies each conditional expression.
  • the entrance pupil diameter of the imaging optical lens is 0.708mm
  • the full-field image height is 3.28mm
  • the diagonal field angle is 136.00°
  • 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 with 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 0.7mm
  • the full-field image height is 3.28mm
  • the diagonal field angle is 136.00°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment, and only the differences are listed below.
  • Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.
  • Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 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 third embodiment satisfies various conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 0.667mm
  • the full-field image height is 3.28mm
  • the diagonal field angle is 136.00°
  • 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.
  • Stagnation position 1 Stagnation position 2 P1R1 1 0.925 To P1R2 To To To To P2R2 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 P4R1 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. 14 and 15 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm pass through the imaging optical lens 40 of the fourth embodiment.
  • FIG. 16 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 40 of the fourth embodiment.
  • Table 17 lists the numerical values corresponding to each conditional expression in this embodiment according to the above-mentioned conditional expressions. Obviously, the imaging optical system of this embodiment satisfies the above-mentioned conditional expressions.
  • the entrance pupil diameter of the imaging optical lens is 0.72mm
  • the full field of view image height is 3.28mm
  • the diagonal field angle is 136.00°
  • 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 f1/f -1.04 -1.76 -2.95 -1.44 (R3+R4)/(R3-R4) -1.53 -14.89 -1.63 -3.77 R7/R8 -2.95 -2.46 -1.04 -1.54 d2/d3 3.02 4.96 1.52 2.63 f 1.700 1.680 1.600 1.728 f1 -1.772 -2.950 -4.712 -2.489 f2 3.953 30.573 16.972 6.488 f3 37.456 7.376 60.746 13.467
  • Fno is the aperture F number of the imaging optical lens.

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Abstract

L'invention concerne une lentille optique de caméra (10), qui comprend dans l'ordre d'un côté objet à un côté image : une première lentille (L1), une deuxième lentille (L2), une troisième lentille (L3), une quatrième lentille (L4), une cinquième lentille (L5), une sixième lentille (L6) et une septième lentille (L7). La lentille optique de caméra (10) satisfait les relations suivantes : -3,00 ≤ f1/f ≤ -1,00 ; -15,00 ≤ (R3 + R4)/(R3-R4) ≤ -1,50 ; -3,00 ≤ R7/R8 ≤ -1,00 ; 1,50 ≤ d2/d3 ≤ 5,00. La lentille optique de caméra (10) a de bonnes propriétés optiques d'angles larges, de grandes ouvertures et de conceptions ultra-minces.
PCT/CN2019/127609 2019-12-23 2019-12-23 Lentille optique de caméra WO2021127914A1 (fr)

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CN104749748A (zh) * 2013-12-27 2015-07-01 先进光电科技股份有限公司 七片式光学影像撷取镜头与七片式光学影像撷取模块
US9442277B1 (en) * 2015-05-12 2016-09-13 AO Ether Optronics (Shenzhen) Limited Wide-angle lens
CN107664829A (zh) * 2017-10-30 2018-02-06 瑞声科技(新加坡)有限公司 摄像光学镜头
CN208092317U (zh) * 2018-02-06 2018-11-13 今国光学工业股份有限公司 七片式小型化鱼眼镜头
CN110596858A (zh) * 2019-08-16 2019-12-20 瑞声通讯科技(常州)有限公司 摄像光学镜头

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104749748A (zh) * 2013-12-27 2015-07-01 先进光电科技股份有限公司 七片式光学影像撷取镜头与七片式光学影像撷取模块
US9442277B1 (en) * 2015-05-12 2016-09-13 AO Ether Optronics (Shenzhen) Limited Wide-angle lens
CN107664829A (zh) * 2017-10-30 2018-02-06 瑞声科技(新加坡)有限公司 摄像光学镜头
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