WO2021031241A1 - 摄像光学镜头 - Google Patents

摄像光学镜头 Download PDF

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Publication number
WO2021031241A1
WO2021031241A1 PCT/CN2019/103624 CN2019103624W WO2021031241A1 WO 2021031241 A1 WO2021031241 A1 WO 2021031241A1 CN 2019103624 W CN2019103624 W CN 2019103624W WO 2021031241 A1 WO2021031241 A1 WO 2021031241A1
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Prior art keywords
lens
imaging optical
curvature
ttl
focal length
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English (en)
French (fr)
Inventor
言俊杰
孙雯
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AAC Optics Changzhou Co Ltd
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AAC Optics Changzhou Co Ltd
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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
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/005—Diaphragms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/60—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only

Definitions

  • the present invention relates to the field of optical lenses, and in particular to an imaging optical lens suitable for portable terminal devices such as smart phones and digital cameras, and imaging devices such as monitors and PC lenses.
  • the traditional miniature lens mounted in the mobile phone camera mostly adopts a three-element, four-element or even a five-element or six-element lens structure.
  • these lenses already have good optical performance, the lens focal length settings are still unreasonable, resulting in the lens structure having good optical performance, but cannot meet the design of large aperture, ultra-thin, and wide-angle. Claim.
  • the object of the present invention is to provide an imaging optical lens, which has good optical performance and meets the design requirements of large aperture, ultra-thin, and wide-angle.
  • An imaging optical lens sequentially comprising from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens, and a fourth lens with positive refractive power Lenses, a fifth lens with negative refractive power, a sixth lens with negative refractive power, a seventh lens with positive refractive power, and an eighth lens with negative refractive power;
  • the focal length of the imaging optical lens is f
  • the focal length of the first lens is f1
  • the focal length of the fourth lens is f4
  • the focal length of the fifth lens is f5, and the following relationship is satisfied:
  • 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 on-axis thickness of the fifth lens is d9
  • the on-axis distance from the image side surface of the fifth lens to the object side surface of the sixth lens is d10, and the following relationship is satisfied:
  • the axial thickness of the first lens is d1
  • the total optical length of the imaging optical lens is TTL
  • 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, and satisfy the following relationship:
  • the focal length of the second lens is f2
  • the on-axis thickness of the second lens is d3
  • the total optical length of the imaging optical lens is TTL
  • the radius of curvature of the object side of the second lens is R3, so
  • the curvature radius of the image side surface of the second lens is R4, and satisfies the following relationship:
  • the focal length of the third lens is f3
  • the axial thickness of the third lens is d5
  • the total optical length of the imaging optical lens is TTL
  • the radius of curvature of the object side of the third lens is R5
  • the curvature radius of the image side surface of the third lens is R6, and satisfies the following relationship:
  • the axial thickness of the fourth lens is d7
  • the total optical length of the imaging optical lens is TTL
  • the radius of curvature of the object side of the fourth lens is R7
  • the radius of curvature of the image side of the fourth lens is R8, and satisfy the following relationship:
  • the axial thickness of the fifth lens is d9
  • the total optical length of the imaging optical lens is TTL
  • 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 focal length of the sixth lens is f6, the axial thickness of the sixth lens is d11, the total optical length of the imaging optical lens is TTL, and the radius of curvature of the object side of the sixth lens is R11, so The curvature radius of the image side surface of the sixth lens is R12, and satisfies the following relationship:
  • the focal length of the seventh lens is f7
  • the axial thickness of the seventh lens is d13
  • the total optical length of the imaging optical lens is TTL
  • the focal length of the eighth lens is f8
  • the axial thickness of the eighth lens is d15
  • the total optical length of the imaging optical lens is TTL
  • the radius of curvature of the object side of the eighth lens is R15
  • the curvature radius of the image side surface of the eighth lens is R16, and satisfies the following relationship:
  • the imaging optical lens of the present invention has good optical performance, and has the characteristics of large aperture, wide-angle, and ultra-thin. It is especially suitable for high-pixel CCD and CMOS.
  • Mobile phone camera lens assembly and WEB camera lens composed of other imaging components.
  • FIG. 1 is a schematic structural diagram 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 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 structural diagram 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 eight lenses. Specifically, the imaging optical lens 10 includes in order from the object side to the image side: aperture S1, first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6, seventh lens L7, and eighth lens L8.
  • optical elements such as an optical filter GF are provided between the eighth lens L8 and the image plane Si.
  • the optical filter GF can be a glass cover plate or an optical filter (filter), of course. In possible embodiments, the optical filter GF may also be arranged in other positions.
  • the first lens L1 has positive refractive power; the second lens L2 has negative refractive power; the fourth lens L4 has positive refractive power; the fifth lens L5 has negative refractive power; the sixth lens L6 has negative refractive power; The seventh lens L7 has positive refractive power; the eighth lens L8 has negative refractive power.
  • the focal length of the imaging optical lens 10 is defined as f, the focal length unit is millimeter (mm), the focal length of the first lens L1 is f1, the focal length of the fourth lens L4 is f4, and the focal length of the fifth lens L5 is The focal length is f5, and the f, f1, f4, and f5 satisfy the following relationship:
  • conditional formula (1) specifies the ratio of the focal length of the first lens L1 to the total focal length of the imaging optical lens 10, which is beneficial to the ultra-thin system within the conditional range.
  • the conditional expression (2) specifies the ratio of the focal length of the fourth lens L4 to the total focal length of the imaging optical lens 10, which helps to improve the performance of the optical system within the range of the conditional expression.
  • the conditional formula (3) specifies the ratio between the focal length of the fifth lens L5 and the total focal length of the imaging optical lens 10, and the focal length of the fifth lens L5 can be effectively allocated within the range of the conditional formula, which is beneficial to aberration correction and improves imaging quality.
  • each lens (L1, L2, L3, L4, L5, L6, L7, L8) with different refractive power is used, and the focal length of the first lens L1 and the imaging optical lens are set 10
  • the ratio of the total focal length, the ratio of the focal length of the fourth lens L4 to the total focal length of the imaging optical lens 10, the ratio between the focal length of the fifth lens L5 and the total focal length of the imaging optical lens 10, help to improve the optical system performance and meet Ultra-thin, wide-angle design requirements.
  • 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
  • conditional expression (4) specifies the shape of the seventh lens L7. Within the range specified by the conditional expression, the degree of deflection of the light passing through the lens can be relaxed, and aberrations can be effectively reduced.
  • the on-axis thickness of the fifth lens L5 is d9
  • 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, and the following relationship is satisfied:
  • conditional formula (5) specifies the ratio of the air separation distance between the fifth lens L5 and the sixth lens L6 and the thickness of the fifth lens L5, which is helpful for lens processing and lens assembly within the scope of the conditional formula.
  • the axial thickness of the first lens L1 is d1
  • the total optical length of the imaging optical lens 10 is TTL
  • the curvature radius of the object side surface of the first lens L1 is R1
  • the first lens L1 image side The radius of curvature is R2, and satisfies the following relationship:
  • Conditional expression (6) specifies the ratio of the on-axis thickness of the first lens L1 to the total optical length of the imaging optical lens 10, which is conducive to achieving ultra-thinness.
  • conditional expression (7) specifies the shape of the first lens L1, which is beneficial to correct the system spherical aberration within the scope of the conditional expression.
  • the focal length of the second lens L2 is f2
  • the axial thickness of the second lens L2 is d3
  • the total optical length of the imaging optical lens is TTL
  • the curvature radius of the object side of the second lens L2 is R3
  • the curvature radius of the image side surface of the second lens L2 is R4, and satisfies the following relationship:
  • Conditional expression (8) specifies the ratio of the on-axis thickness of the second lens L2 to the total optical length of the imaging optical lens 10, which is beneficial to realize ultra-thinness.
  • conditional expression (9) specifies the shape of the second lens L2. When it is within the range of the conditional expression, as the lens becomes ultra-thin and wide-angle, it is beneficial to correct the problem of axial aberration.
  • Conditional expression (10) specifies the ratio between the focal length of the second lens L2 and the total focal length of the overall imaging optical lens 10. By controlling the negative refractive power of the second lens L2 in a reasonable range, it is beneficial to correct the aberration of the optical system.
  • the focal length of the third lens L3 is f3
  • the axial thickness of the third lens L3 is d5
  • the total optical length of the imaging optical lens 10 is TTL
  • the curvature radius of the object side of the third lens L3 Is R5
  • the curvature radius of the image side surface of the third lens L3 is R6, and satisfies the following relationship:
  • Conditional expression (11) specifies the ratio of the on-axis thickness of the third lens L3 to the total optical length of the imaging optical lens 10, which is beneficial to realize ultra-thinness.
  • Conditional expression (12) specifies the shape of the third lens L3, which is beneficial to the molding of the third lens L3, and avoids molding defects and stress generation due to excessive surface curvature of the third lens L3.
  • Conditional expression (13) specifies the ratio between the focal length of the third lens L3 and the total focal length of the overall imaging optical lens 10. With this setting, the system has better imaging quality and lower sensitivity through reasonable allocation of focal lengths.
  • the axial thickness of the fourth lens L4 is d7
  • the total optical length of the imaging optical lens 10 is TTL
  • the curvature radius of the object side surface of the fourth lens L4 is R7
  • the fourth lens L4 image side The radius of curvature is R8, and satisfies the following relationship:
  • Conditional expression (14) specifies the ratio of the on-axis thickness of the fourth lens L4 to the total optical length of the imaging optical lens 10, which is conducive to achieving ultra-thinness.
  • conditional expression (15) specifies the shape of the fourth lens L4. When 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.
  • the axial thickness of the fifth lens L5 is d9
  • the total optical length of the imaging optical lens 10 is TTL
  • the radius of curvature of the object side surface of the fifth lens L5 is R9
  • the fifth lens L5 image side The radius of curvature is R10, and satisfies the following relationship:
  • Conditional expression (16) specifies the ratio of the on-axis thickness of the fifth lens L5 to the total optical length of the imaging optical lens 10, which is conducive to achieving ultra-thinness.
  • Conditional expression (17) specifies the shape of the fifth lens L5. When the condition 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.
  • the focal length of the sixth lens L6 is f6, the axial thickness of the sixth lens L6 is d11, the total optical length of the imaging optical lens 10 is TTL, and the curvature radius of the object side of the sixth lens L6 Is R11, the radius of curvature of the image side surface of the sixth lens L6 is R12, and satisfies the following relationship:
  • Conditional expression (18) specifies the ratio of the on-axis thickness of the sixth lens L6 to the total optical length of the imaging optical lens 10, which is beneficial to realize ultra-thinness.
  • Conditional expression (19) specifies the shape of the sixth lens L6. When the condition 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.
  • Conditional expression (20) specifies the ratio between the focal length of the sixth lens L6 and the total focal length of the overall imaging optical lens 10. With this setting, the system has better imaging quality and lower sensitivity through reasonable allocation of focal lengths.
  • the focal length of the seventh lens L7 is f7
  • the axial thickness of the seventh lens L7 is d13
  • the total optical length of the imaging optical lens 10 is TTL, and the following relationship is satisfied:
  • Conditional expression (21) specifies the ratio of the on-axis thickness of the seventh lens L7 to the total optical length of the imaging optical lens 10, which is conducive to achieving ultra-thinness.
  • Conditional expression (22) specifies the ratio between the focal length of the seventh lens L7 and the total focal length of the overall imaging optical lens 10. With this setting, the system has better imaging quality and lower sensitivity through reasonable allocation of focal lengths.
  • the focal length of the eighth lens L8 is f8, the axial thickness of the eighth lens L8 is d15, the total optical length of the imaging optical lens 10 is TTL, and the curvature radius of the object side of the eighth lens L8 Is R15, the radius of curvature of the image side surface of the eighth lens L8 is R16, and satisfies the following relationship:
  • Conditional expression (23) specifies the ratio of the on-axis thickness of the eighth lens L8 to the total optical length of the imaging optical lens 10, which is beneficial to realize ultra-thinness.
  • the conditional expression (24) specifies the shape of the eighth lens L8. When it is within the condition range, as the ultra-thin and wide-angle develops, it is beneficial to correct the off-axis angle of view aberration and other problems.
  • Conditional expression (25) specifies the ratio between the focal length of the eighth lens L8 and the total focal length of the overall imaging optical lens 10. With this setting, the system has better imaging quality and lower sensitivity through reasonable allocation of focal lengths.
  • the total optical length of the camera optical lens 10 is TTL
  • the image height is IH
  • the following relationship is satisfied: TTL/IH ⁇ 1.25, at the same time FNO ⁇ 1.95, FOV ⁇ 80, which can meet the requirements of large aperture and ultra-thin.
  • the surface of the lens can be set as an aspheric surface, and the aspheric surface can be easily made into a shape other than a spherical surface to obtain more control variables to reduce aberrations and thereby reduce the number of lenses used. Therefore, the imaging optics of the invention can be effectively reduced The total length of the lens 10.
  • the object side surface and the image side surface of each lens are both aspherical.
  • the imaging optical lens 10 of the present invention will be described below with examples.
  • the symbols described in each example are as follows, and the units of focal length, on-axis distance, radius of curvature, on-axis thickness, inflection point position, and stagnation point position are mm.
  • the object side and/or the image side of the lens may also be provided with inflection points and/or stagnation points to meet high-quality imaging requirements.
  • inflection points and/or stagnation points may also be provided with inflection points and/or stagnation points to meet high-quality imaging requirements.
  • FIG. 1 is a schematic diagram of the structure of an imaging optical lens 10 in the first embodiment.
  • the design data of the imaging optical lens 10 in the first embodiment of the present invention is shown below.
  • Table 1 lists the object side and image side curvature radius R of the first lens L1 to the eighth lens L8 constituting the imaging optical lens 10 in the first embodiment of the present invention, the axial thickness of the lens, the distance d between the lenses, and the refraction Rate nd and Abbe number vd.
  • Table 2 shows the conic coefficient k and the aspheric coefficient of the imaging optical lens 10. It should be noted that in this embodiment, the units of distance, radius, and thickness are all millimeters (mm).
  • R the radius of curvature of the optical surface
  • R1 the object side of the first lens L1;
  • R2 the image side of the first lens L1;
  • R3 the object side of the second lens L2;
  • R4 the image side of the second lens L2
  • R5 the object side of the third lens L3;
  • R6 the image side of the third lens L3;
  • R7 the object side of the fourth lens L4;
  • R8 the image side of the fourth lens L4;
  • R9 the object side of the fifth lens L5;
  • R10 the image side of the fifth lens L5;
  • R11 the object side of the sixth lens L6;
  • R12 the image side of the sixth lens L6;
  • R13 the object side of the seventh lens L7;
  • R14 the image side of the seventh lens L7;
  • R15 the object side of the eighth lens L8;
  • R16 the image side of the eighth lens L8;
  • R17 the object side of the optical filter GF
  • R18 the image side of the optical filter GF
  • d the on-axis thickness of the lens or the on-axis distance between adjacent lenses
  • d0 the on-axis distance from the aperture S1 to the object side of the first lens L1;
  • d2 the on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;
  • d4 the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;
  • d6 the on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;
  • d10 the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;
  • d11 the on-axis thickness of the sixth lens L6;
  • d12 the on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7;
  • d14 the on-axis distance from the image side surface of the seventh lens L7 to the object side surface of the eighth lens L8;
  • d16 the on-axis distance from the image side of the eighth lens L8 to the object side of the optical filter
  • d17 the axial thickness of the optical filter GF
  • nd refractive index of d-line
  • nd1 the refractive index of the first lens L1;
  • nd2 the refractive index of the second lens L2
  • nd3 the refractive index of the third lens L3;
  • nd4 the refractive index of the fourth lens L4
  • nd5 the refractive index of the fifth lens L5;
  • nd6 the refractive index of the sixth lens L6
  • nd7 the refractive index of the seventh lens L7;
  • nd8 the refractive index of the eighth lens L8;
  • ndg the refractive index of the optical filter GF
  • vg Abbe number of optical filter GF.
  • k is the conic coefficient
  • A4, A6, A8, A10, A12, A14, A16, A18, and A20 are aspherical coefficients.
  • conditional expression (26) the aspheric surface of each lens in this embodiment preferably uses the aspheric surface shown in the following conditional expression (26), but the specific form of the following conditional expression (26) is only an example. In fact, It is not limited to the aspheric polynomial form shown in conditional expression (26).
  • 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 embodiment of the present invention.
  • P1R1, P1R2 represent the object side and image side of the first lens L1
  • P2R1, P2R2 represent the object side and image side of the second lens L2
  • P3R1, P3R2 represent the object side and image side of the third lens L3,
  • P4R1, P4R2 represent the object side and image side of the fourth lens L4
  • P5R1, P5R2 represent the object side and image side of the fifth lens L5
  • P6R1, P6R2 represent the object side and image side of the sixth lens L6
  • P7R1 P7R2 represents the object side and image side of the seventh lens L7, respectively
  • P8R1 and P8R2 represent the object side and the image side of the eighth lens L8, 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.
  • Table 13 also lists the values corresponding to the various parameters in the first embodiment and the parameters specified in the conditional expressions.
  • FIG. 4 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 10 of the first embodiment.
  • the curvature of field S in FIG. 4 is the curvature of field in the sagittal direction
  • T is the curvature of field in the meridional direction.
  • the entrance pupil diameter of the imaging optical lens is 4.677mm
  • the full field of view image height is 8.000mm
  • the diagonal field of view is 80.00°
  • wide-angle ultra-thin
  • its on-axis and off-axis The chromatic aberration is fully corrected and has excellent optical characteristics.
  • FIG. 5 is a schematic diagram of the structure of the imaging optical lens 20 in the second embodiment.
  • 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. 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 7 and Table 8 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 20 of the 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 curvature of field S in FIG. 8 is the curvature of field in the sagittal direction
  • T is the curvature of field in the meridional direction.
  • the entrance pupil diameter of the imaging optical lens is 4.643mm
  • the full-field image height is 8.000mm
  • the diagonal viewing angle is 80.00°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • FIG. 9 is a schematic diagram of the structure of the imaging optical lens 30 in the third embodiment.
  • the third embodiment is basically the same as the first embodiment.
  • the meaning of the symbols is the same as that of the first embodiment. Only the differences are listed below. .
  • Table 9 and Table 10 show design data of the imaging optical lens 30 of 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 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 curvature of field S in FIG. 12 is the curvature of field in the sagittal direction
  • T is the curvature of field in the meridional direction.
  • the entrance pupil diameter of the imaging optical lens is 4.678mm
  • the full-field image height is 8.000mm
  • the diagonal viewing angle is 80.00°
  • wide-angle ultra-thin
  • its axis and axis The external chromatic aberration is fully corrected and has excellent optical characteristics.
  • Example 1 Example 2
  • Example 3 f1/f 0.74 0.84 0.66 f4/f 2.85 2.30 4.89 f5/f -3.31 -5.39 -2.70 f 9.026 9.030 9.031 f1 6.695 7.585 5.996 f2 -18.722 -25.789 -13.082 f3 -163.101 -45.283 47.511 f4 25.760 20.769 44.159 f5 -29.840 -48.708 -24.417 f6 -49.658 -21.794 -57.780 f7 14.340 9.678 13.650 f8 -7.376 -6.451 -6.241 f12 9.277 9.812 9.474 FNO 1.93 1.95 1.93

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Abstract

本发明提供了一种摄像光学镜头，摄像光学镜头自物侧至像侧依序包含具有正屈折力的第一透镜，具有负屈折力的第二透镜，第三透镜，具有正屈折力的第四透镜，具有负屈折力的第五透镜，具有负屈折力的第六透镜，具有正屈折力的第七透镜，以及具有负屈折力的第八透镜；所述摄像光学镜头的焦距为f，所述第一透镜的焦距为f1，所述第四透镜的焦距为f4，所述第五透镜的焦距为f5，且满足下列关系式：0.65≤f1/f≤0.85；2.00≤f4/f≤5.00；-5.50≤f5/f≤-2.50。本发明的摄像光学镜头具有良好光学性能，且具有大光圈、广角化、超薄化的特性。

Description

摄像光学镜头 【技术领域】
本发明涉及光学镜头领域，特别涉及一种适用于智能手机、数码相机等手提终端设备，以及监视器、PC镜头等摄像装置的摄像光学镜头。
【背景技术】
随着智能手机的迅速发展普及，摄像头的研发和设计随之飞速发展，再加上现今电子产品以功能佳且轻薄短小的外型为发展趋势，具备良好成像品质的小型化摄像头俨然成为目前市场上的主流。
为获得较佳的成像品质，传统搭载于手机相机的微型镜头多采用三片式、四片式甚至是五片式、六片式透镜结构。这些镜头虽然已经具有较好的光学性能，但是透镜焦距的设置等方面仍然具有一定的不合理性，导致透镜结构在具有良好光学性能的同时，无法满足大光圈、超薄化、广角化的设计要求。
【发明内容】
针对上述问题，本发明的目的在于提供一种摄像光学镜头，其具有良好光学性能的同时，满足大光圈、超薄化、广角化的设计要求。
本发明的技术方案如下：
一种摄像光学镜头，所述摄像光学镜头自物侧至像侧依序包含：具有正屈折力的第一透镜，具有负屈折力的第二透镜，第三透镜，具有正屈折力的第四透镜，具有负屈折力的第五透镜，具有负屈折力的第六透镜，具有正屈折力的第七透镜，以及具有负屈折力的第八透镜；
所述摄像光学镜头的焦距为f，所述第一透镜的焦距为f1，所述第四透镜的焦距为f4，所述第五透镜的焦距为f5，且满足下列关系式：
0.65≤f1/f≤0.85；
2.00≤f4/f≤5.00；
-5.50≤f5/f≤-2.50。
进一步的，所述第七透镜物侧面的曲率半径为R13，所述第七透镜像侧面的曲率半径为R14，且满足下列关系式：
-5.00≤(R13+R14)/(R13-R14)≤-1.00。
进一步的，所述第五透镜的轴上厚度为d9，第五透镜的像侧面到第六透镜的物侧面的轴上距离为d10，且满足下列关系式：
1.50≤d10/d9≤2.50。
进一步的，所述第一透镜的轴上厚度为d1，所述摄像光学镜头的光学总长为TTL，所述第一透镜物侧面的曲率半径为R1，所述第一透镜像侧面的曲率半径为R2，且满足下列关系式：
0.07≤d1/TTL≤0.21；
-3.97≤(R1+R2)/(R1-R2)≤-0.78。
进一步的，所述第二透镜的焦距为f2，所述第二透镜的轴上厚度为d3，所述摄像光学镜头的光学总长为TTL，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的曲率半径为R4，且满足下列关系式：
0.02≤d3/TTL≤0.05；
0.64≤(R3+R4)/(R3-R4)≤6.98；
-5.71≤f2/f≤-0.97。
进一步的，所述第三透镜的焦距为f3，所述第三透镜的轴上厚度为d5，所述摄像光学镜头的光学总长为TTL，所述第三透镜物侧面的曲率半径为R5，所述第三透镜像侧面的曲率半径为R6，且满足下列关系式：
0.02≤d5/TTL≤0.06；
-2.74≤(R5+R6)/(R5-R6)≤2.64；
-36.14≤f3/f≤7.89。
进一步的，所述第四透镜的轴上厚度为d7，所述摄像光学镜头的光学总长为TTL，所述第四透镜物侧面的曲率半径为R7，所述第四透镜像侧面的曲率半径为R8，且满足下列关系式：
0.02≤d7/TTL≤0.07；
-0.86≤(R7+R8)/(R7-R8)≤9.27。
进一步的，所述第五透镜的轴上厚度为d9，所述摄像光学镜头的光学总长为TTL，所述第五透镜物侧面的曲率半径为R9，所述第五透镜像侧面的曲率半径为R10，且满足下列关系式：
0.02≤d9/TTL≤0.05；
-3.80≤(R9+R10)/(R9-R10)≤4.40。
进一步的，所述第六透镜的焦距为f6，所述第六透镜的轴上厚度为d11，所述摄像光学镜头的光学总长为TTL，所述第六透镜物侧面的曲率半径为R11，所述第六透镜像侧面的曲率半径为R12，且满足下列关系式：
0.03≤d11/TTL≤0.08；
-11.91≤(R11+R12)/(R11-R12)≤-1.27；
-12.80≤f6/f≤-1.61。
进一步的，所述第七透镜的焦距为f7，所述第七透镜的轴上厚度为d13，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
0.03≤d13/TTL≤0.11；
0.54≤f7/f≤2.38。
进一步的，所述第八透镜的焦距为f8，所述第八透镜的轴上厚度为d15，所述摄像光学镜头的光学总长为TTL，所述第八透镜物侧面的曲率半径为R15，所述第八透镜像侧面的曲率半径为R16，且满足下列关系式：
0.03≤d15/TTL≤0.13；
-1.53≤(R15+R16)/(R15-R16)≤-0.23；
-1.63≤f8/f≤-0.46。
本发明的有益效果在于：通过上述透镜的配置方式，本发明的摄像光学镜头具有良好光学性能，且具有大光圈、广角化、超薄化的特性，尤其适用于由高像素用的CCD、CMOS等摄像元件构成的手机摄像镜头组件和WEB摄像镜头。
【附图说明】
图1是本发明第一实施方式的摄像光学镜头的结构示意图；
图2是图1所示摄像光学镜头的轴向像差示意图；
图3是图1所示摄像光学镜头的倍率色差示意图；
图4是图1所示摄像光学镜头的场曲及畸变示意图；
图5是本发明第二实施方式的摄像光学镜头的结构示意图；
图6是图5所示摄像光学镜头的轴向像差示意图；
图7是图5所示摄像光学镜头的倍率色差示意图；
图8是图5所示摄像光学镜头的场曲及畸变示意图；
图9是本发明第三实施方式的摄像光学镜头的结构示意图；
图10是图9所示摄像光学镜头的轴向像差示意图；
图11是图9所示摄像光学镜头的倍率色差示意图；
图12是图9所示摄像光学镜头的场曲及畸变示意图。
【具体实施方式】
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明的各实施例进行详细的阐述。然而，本领域的普通技术人员可以理解，在本发明各实施方式中，为了使读者更好地理解本发明而提出了许多技术细节。但是，即使没有这些技术细节和基于以下实施方式的种种变化和修改，也可以实现本发明所要去保护的技术方案。
第一实施方式：
图1所示为本发明第一实施方式的摄像光学镜头10，该摄像光学镜头10包括八个透镜。具体的，所述摄像光学镜头10由物侧至像侧依序包括：光圈S1、第一透镜L1、第二透镜L2、第三透镜L3、第四透镜L4、第五透镜L5、第六透镜L6、第七透镜L7以及第八透镜L8。本实施方式中，在第八透镜L8和像面Si之间设置有光学过滤片GF等光学元件，其中光学过滤片GF可以是玻璃盖板，也可以是光学过滤片(filter)，当然在其他 可实施方式中，光学过滤片GF还可以设置在其他位置。
本实施方式中，第一透镜L1具有正屈折力；第二透镜L2具有负屈折力；第四透镜L4具有正屈折力；第五透镜L5具有负屈折力；第六透镜L6具有负屈折力；第七透镜L7具有正屈折力；第八透镜L8具有负屈折力。
在此，定义所述摄像光学镜头10的焦距为f，焦距单位为毫米(mm)，所述第一透镜L1的焦距为f1，第四透镜L4的焦距为f4，所述第五透镜L5的焦距为f5，所述f、f1、f4、f5满足以下关系式：
0.65≤f1/f≤0.85     (1)
2.00≤f4/f≤5.00     (2)
-5.50≤f5/f≤-2.50      (3)
其中，条件式(1)规定了第一透镜L1的焦距与摄像光学镜头10总焦距的比值，在条件范围内有利于系统超薄化。
条件式(2)规定了第四透镜L4的焦距与摄像光学镜头10总焦距的比值，在条件式范围内有助于提高光学系统性能。
条件式(3)规定了第五透镜L5的焦距与摄像光学镜头10总焦距之间的比值，在条件式范围内可有效分配第五透镜L5的焦距，有利于像差校正，提高成像品质。
本实施方式中，通过上述透镜的配置方式，利用具有不同屈折力的各个透镜(L1、L2、L3、L4、L5、L6、L7、L8)，并设置第一透镜L1的焦距与摄像光学镜头10总焦距的比值、第四透镜L4的焦距与摄像光学镜头10总焦距的比值、第五透镜L5的焦距与摄像光学镜头10总焦距之间的比值，有助于提高光学的系统性能，满足超薄、广角化的设计要求。
优选的，所述第七透镜L7物侧面的曲率半径为R13，所述第七透镜L7像侧面的曲率半径为R14，且满足下列关系式：
-5.00≤(R13+R14)/(R13-R14)≤-1.00   (4)
条件式(4)规定了第七透镜L7的形状，在条件式规定范围内，可以缓和光线经过镜片的偏折程度，有效减小像差。
优选的，所述第五透镜L5的轴上厚度为d9，第五透镜L5的像侧面到第六透镜L6的物侧面的轴上距离为d10，且满足下列关系式：
1.50≤d10/d9≤2.50      (5)
条件式(5)规定了第五透镜L5、第六透镜L6之间的空气间隔距离和第五透镜L5厚度的比值，在条件式范围内有助于镜片的加工和镜头的组装。
优选的，所述第一透镜L1的轴上厚度为d1，所述摄像光学镜头10的光学总长为TTL，所述第一透镜L1物侧面的曲率半径为R1，所述第一透镜L1像侧面的曲率半径为R2，且满足下列关系式：
0.07≤d1/TTL≤0.21      (6)
-3.97≤(R1+R2)/(R1-R2)≤-0.78     (7)
条件式(6)规定了所述第一透镜L1的轴上厚度与摄像光学镜头10的光学总长的比值，有利于实现超薄化。
条件式(7)规定了第一透镜L1的形状，在条件式范围内有利于矫正系统球差。
优选的，所述第二透镜L2的焦距为f2，所述第二透镜L2的轴上厚度为d3，所述摄像光学镜头的光学总长为TTL，所述第二透镜L2物侧面的曲率半径为R3，所述第二透镜L2像侧面的曲率半径为R4，且满足下列关系式：
0.02≤d3/TTL≤0.05      (8)
0.64≤(R3+R4)/(R3-R4)≤6.98     (9)
-5.71≤f2/f≤-0.97      (10)
条件式(8)规定了所述第二透镜L2的轴上厚度与摄像光学镜头10的光学总长的比值，有利于实现超薄化。
条件式(9)规定了第二透镜L2的形状，在条件式范围内时，随着镜头向超薄广角化发展，有利于补正轴上像差问题。
条件式(10)规定了第二透镜L2的焦距与整体摄像光学镜头10总焦距之间的比值。通过将第二透镜L2的负光焦度控制在合理范围，有利于矫 正光学系统的像差。
优选的，所述第三透镜L3的焦距为f3，所述第三透镜L3的轴上厚度为d5，所述摄像光学镜头10的光学总长为TTL，所述第三透镜L3物侧面的曲率半径为R5，所述第三透镜L3像侧面的曲率半径为R6，且满足下列关系式：
0.02≤d5/TTL≤0.06     (11)
-2.74≤(R5+R6)/(R5-R6)≤2.64     (12)
-36.14≤f3/f≤7.89      (13)
条件式(11)规定了所述第三透镜L3的轴上厚度与摄像光学镜头10的光学总长的比值，有利于实现超薄化。
条件式(12)规定了所述第三透镜L3的形状，有利于第三透镜L3成型，并避免因第三透镜L3的表面曲率过大而导致成型不良与应力产生。
条件式(13)规定了所述第三透镜L3的焦距与整体摄像光学镜头10总焦距之间的比值。如此设置，通过焦距的合理分配，使得系统具有较佳的成像品质和较低的敏感性。
优选的，所述第四透镜L4的轴上厚度为d7，所述摄像光学镜头10的光学总长为TTL，所述第四透镜L4物侧面的曲率半径为R7，所述第四透镜L4像侧面的曲率半径为R8，且满足下列关系式：
0.02≤d7/TTL≤0.07       (14)
-0.86≤(R7+R8)/(R7-R8)≤9.27     (15)
条件式(14)规定了所述第四透镜L4的轴上厚度与摄像光学镜头10的光学总长的比值，有利于实现超薄化。
条件式(15)规定了所述第四透镜L4的形状，在范围内时，随着超薄广角化的发展，有利于补正轴外画角的像差等问题。
优选的，所述第五透镜L5的轴上厚度为d9，所述摄像光学镜头10的光学总长为TTL，所述第五透镜L5物侧面的曲率半径为R9，所述第五透镜L5像侧面的曲率半径为R10，且满足下列关系式：
0.02≤d9/TTL≤0.05      (16)
-3.80≤(R9+R10)/(R9-R10)≤4.40       (17)
条件式(16)规定了所述第五透镜L5的轴上厚度与摄像光学镜头10的光学总长的比值，有利于实现超薄化。
条件式(17)规定了所述第五透镜L5的形状，在条件范围内时，随着超薄广角化发展，有利于补正轴外画角的像差等问题。
优选的，所述第六透镜L6的焦距为f6，所述第六透镜L6的轴上厚度为d11，所述摄像光学镜头10的光学总长为TTL，所述第六透镜L6物侧面的曲率半径为R11，所述第六透镜L6像侧面的曲率半径为R12，且满足下列关系式：
0.03≤d11/TTL≤0.08      (18)
-11.91≤(R11+R12)/(R11-R12)≤-1.27      (19)
-12.80≤f6/f≤-1.61       (20)
条件式(18)规定了所述第六透镜L6的轴上厚度与摄像光学镜头10的光学总长的比值，有利于实现超薄化。
条件式(19)规定了所述第六透镜L6的形状，在条件范围内时，随着超薄广角化发展，有利于补正轴外画角的像差等问题。
条件式(20)规定了所述第六透镜L6的焦距与整体摄像光学镜头10总焦距之间的比值。如此设置，通过焦距的合理分配，使得系统具有较佳的成像品质和较低的敏感性。
优选的，所述第七透镜L7的焦距为f7，所述第七透镜L7的轴上厚度为d13，所述摄像光学镜头10的光学总长为TTL，且满足下列关系式：
0.03≤d13/TTL≤0.11     (21)
0.54≤f7/f≤2.38        (22)
条件式(21)规定了所述第七透镜L7的轴上厚度与摄像光学镜头10的光学总长的比值，有利于实现超薄化。
条件式(22)规定了所述第七透镜L7的焦距与整体摄像光学镜头10总焦距之间的比值。如此设置，通过焦距的合理分配，使得系统具有较佳的成像品质和较低的敏感性。
优选的，所述第八透镜L8的焦距为f8，所述第八透镜L8的轴上厚度为d15，所述摄像光学镜头10的光学总长为TTL，所述第八透镜L8物侧面的曲率半径为R15，所述第八透镜L8像侧面的曲率半径为R16，且满足下列关系式：
0.03≤d15/TTL≤0.13     (23)
-1.53≤(R15+R16)/(R15-R16)≤-0.23     (24)
-1.63≤f8/f≤-0.46       (25)
条件式(23)规定了所述第八透镜L8的轴上厚度与摄像光学镜头10的光学总长的比值，有利于实现超薄化。
条件式(24)规定了所述第八透镜L8的形状，在条件范围内时，随着超薄广角化发展，有利于补正轴外画角的像差等问题。
条件式(25)规定了所述第八透镜L8的焦距与整体摄像光学镜头10总焦距之间的比值。如此设置，通过焦距的合理分配，使得系统具有较佳的成像品质和较低的敏感性。
本摄像光学镜头10的光学总长为TTL，像高为IH，且满足下列关系式：TTL/IH≤1.25，同时FNO≤1.95，FOV≥80，能够满足大光圈、超薄的要求。
此外，透镜的表面可以设置为非球面，非球面可以容易制作成球面以外的形状，获得较多的控制变数，用以消减像差，进而缩减透镜使用的数目，因此可以有效降低本发明摄像光学镜头10的总长度。本发明实施例中，各个透镜的物侧面和像侧面均为非球面。
下面将用实例进行说明本发明的摄像光学镜头10。各实例中所记载的符号如下所示，焦距、轴上距离、曲率半径、轴上厚度、反曲点位置、驻点位置的单位为mm。
优选的，所述透镜的物侧面和/或像侧面上还可以设置有反曲点和/或驻点，以满足高品质的成像需求，具体的可实施方案，参下所述。
图1是第一实施方式中摄像光学镜头10的结构示意图。以下示出了本发明第一实施方式中摄像光学镜头10的设计数据。
表1列出了本发明第一实施方式中构成摄像光学镜头10的第一透镜L1～第八镜头L8的物侧以及像侧曲率半径R、透镜的轴上厚度、透镜间的距离d、折射率nd及阿贝数vd。表2示出了摄像光学镜头10的圆锥系数k与非球面系数。需要说明的是，本实施方式中，距离、半径和厚度的单位均为毫米(mm)。
【表1】
Figure PCTCN2019103624-appb-000001
上表中各符号的含义如下。
R：光学面的曲率半径；
S1：光圈；
R1：第一透镜L1的物侧面；
R2：第一透镜L1的像侧面；
R3：第二透镜L2的物侧面；
R4：第二透镜L2的像侧面；
R5：第三透镜L3的物侧面；
R6：第三透镜L3的像侧面；
R7：第四透镜L4的物侧面；
R8：第四透镜L4的像侧面；
R9：第五透镜L5的物侧面；
R10：第五透镜L5的像侧面；
R11：第六透镜L6的物侧面；
R12：第六透镜L6的像侧面；
R13：第七透镜L7的物侧面；
R14：第七透镜L7的像侧面；
R15：第八透镜L8的物侧面；
R16：第八透镜L8的像侧面；
R17:光学过滤片GF的物侧面；
R18:光学过滤片GF的像侧面；
d：透镜的轴上厚度或相邻透镜之间的轴上距离；
d0:光圈S1到第一透镜L1的物侧面的轴上距离；
d1：第一透镜L1的轴上厚度；
d2：第一透镜L1的像侧面到第二透镜L2的物侧面的轴上距离；
d3：第二透镜L2的轴上厚度；
d4：第二透镜L2的像侧面到第三透镜L3的物侧面的轴上距离；
d5：第三透镜L3的轴上厚度；
d6：第三透镜L3的像侧面到第四透镜L4的物侧面的轴上距离；
d7：第四透镜L4的轴上厚度；
d8：第四透镜L4的像侧面到第五透镜L5的物侧面的轴上距离；
d9：第五透镜L5的轴上厚度；
d10：第五透镜L5的像侧面到第六透镜L6的物侧面的轴上距离；
d11：第六透镜L6的轴上厚度；
d12：第六透镜L6的像侧面到第七透镜L7的物侧面的轴上距离；
d13：第七透镜L7的轴上厚度；
d14：第七透镜L7的像侧面到第八透镜L8的物侧面的轴上距离；
d15：第八透镜L8的轴上厚度；
d16：第八透镜L8的像侧面到光学过滤片的物侧面的轴上距离；
d17：光学过滤片GF的轴上厚度；
d18：光学过滤片GF的像侧面到像面Si的轴上距离；
nd：d线的折射率；
nd1：第一透镜L1的折射率；
nd2：第二透镜L2的折射率；
nd3：第三透镜L3的折射率；
nd4：第四透镜L4的折射率；
nd5：第五透镜L5的折射率；
nd6：第六透镜L6的折射率；
nd7：第七透镜L7的折射率；
nd8：第八透镜L8的折射率；
ndg：光学过滤片GF的折射率；
vd:阿贝数；
v1：第一透镜L1的阿贝数；
v2：第二透镜L2的阿贝数；
v3：第三透镜L3的阿贝数；
v4：第四透镜L4的阿贝数；
v5：第五透镜L5的阿贝数；
v6：第六透镜L6的阿贝数；
v7：第七透镜L7的阿贝数；
v8：第八透镜L8的阿贝数；
vg：光学过滤片GF的阿贝数。
【表2】
Figure PCTCN2019103624-appb-000002
在表2中，k是圆锥系数，A4、A6、A8、A10、A12、A14、A16、A18、A20是非球面系数。
需要说明的是，本实施方式中各透镜的非球面优选的使用下述条件式(26)所示的非球面，但是，下述条件式(26)的具体形式仅为一个示例，实际上，并不限于条件式(26)中表示的非球面多项式形式。
y＝(x 2/R)/[1+{1-(k+1)(x 2/R 2)} 1/2]+A4x 4+A6x 6+A8x 8+A10x 10+A12x 12+A14x 14+A16x 16+A18x 18+A20x 20    (26)
表3、表4示出本发明实施例的摄像光学镜头10中各透镜的反曲点以及驻点设计数据。其中，P1R1、P1R2分别代表第一透镜L1的物侧面 和像侧面，P2R1、P2R2分别代表第二透镜L2的物侧面和像侧面，P3R1、P3R2分别代表第三透镜L3的物侧面和像侧面，P4R1、P4R2分别代表第四透镜L4的物侧面和像侧面，P5R1、P5R2分别代表第五透镜L5的物侧面和像侧面，P6R1、P6R2分别代表第六透镜L6的物侧面和像侧面，P7R1、P7R2分别代表第七透镜L7的物侧面和像侧面，P8R1、P8R2分别代表第八透镜L8的物侧面和像侧面。“反曲点位置”栏位对应数据为各透镜表面所设置的反曲点到摄像光学镜头10光轴的垂直距离。“驻点位置”栏位对应数据为各透镜表面所设置的驻点到摄像光学镜头10光轴的垂直距离。
【表3】
Figure PCTCN2019103624-appb-000003
【表4】
  驻点个数 驻点位置1 驻点位置2
P1R1      
P1R2      
P2R1      
P2R2      
P3R1 2 1.755 1.945
P3R2 1 1.855  
P4R1 1 0.575  
P4R2      
P5R1      
P5R2      
P6R1      
P6R2      
P7R1 1 2.015  
P7R2 1 2.255  
P8R1      
P8R2 1 1.225  
另外，在后续的表13中，还列出了第一实施方式中各种参数与条件式中已规定的参数所对应的值。
图2、图3分别示出了波长为650nm、610nm、555nm、510nm、和470nm的光经过第一实施方式的摄像光学镜头10后的轴向像差以及倍率色差示意图。图4则示出了，波长为555nm的光经过第一实施方式的摄像光学镜头10后的场曲及畸变示意图。图4的场曲S是弧矢方向的场曲，T是子午方向的场曲。
在本实施方式中，所述摄像光学镜头的入瞳直径为4.677mm，全视场像高为8.000mm，对角线的视场角为80.00°，广角、超薄，其轴上、轴外色像差充分补正，且具有优秀的光学特征。
第二实施方式：
图5是第二实施方式中摄像光学镜头20的结构示意图，第二实施方式与第一实施方式基本相同，符号含义与第一实施方式相同，以下只列出 不同点。
表5、表6示出本发明第二实施方式的摄像光学镜头20的设计数据。
【表5】
Figure PCTCN2019103624-appb-000004
【表6】
Figure PCTCN2019103624-appb-000005
Figure PCTCN2019103624-appb-000006
表7、表8示出本发明实施例的摄像光学镜头20中各透镜的反曲点以及驻点设计数据。
【表7】
Figure PCTCN2019103624-appb-000007
Figure PCTCN2019103624-appb-000008
【表8】
  驻点个数 驻点位置1 驻点位置2
P1R1      
P1R2      
P2R1      
P2R2      
P3R1 2 0.535 1.685
P3R2 1 0.775  
P4R1 1 1.095  
P4R2      
P5R1 1 0.555  
P5R2 1 0.885  
P6R1      
P6R2      
P7R1 1 1.825  
P7R2 1 1.945  
P8R1 1 5.905  
P8R2 1 1.485  
在后续的表13中，还列出了第二实施方式中各种参数与条件式中已规定的参数所对应的值。
图6、图7分别示出了波长为650nm、610nm、555nm、510nm、和470nm的光经过第二实施方式的摄像光学镜头20后的轴向像差以及倍率色差示意图。图8则示出了，波长为555nm的光经过第二实施方式的摄像光学镜头20后的场曲及畸变示意图。图8的场曲S是弧矢方向的场曲，T是子午方向的场曲。
在本实施方式中，所述摄像光学镜头的入瞳直径为4.643mm，全视场像高为8.000mm，对角线方向的视场角为80.00°，广角、超薄，其轴上、 轴外色像差充分补正，且具有优秀的光学特征。
第三实施方式：
图9是第三实施方式中摄像光学镜头30的结构示意图，第三实施方式与第一实施方式基本相同，在第三实施方式中，符号含义与第一实施方式相同，以下只列出不同点。
表9、表10示出了本发明第三实施方式的摄像光学镜头30的设计数据。
【表9】
Figure PCTCN2019103624-appb-000009
【表10】
Figure PCTCN2019103624-appb-000010
Figure PCTCN2019103624-appb-000011
表11、表12示出本发明实施例的摄像光学镜头30中各透镜的反曲点以及驻点设计数据。
【表11】
Figure PCTCN2019103624-appb-000012
Figure PCTCN2019103624-appb-000013
【表12】
  驻点个数 驻点位置1
P1R1    
P1R2 1 2.175
P2R1    
P2R2    
P3R1 1 1.805
P3R2    
P4R1    
P4R2    
P5R1 1 0.575
P5R2 1 1.015
P6R1    
P6R2    
P7R1 1 1.705
P7R2 1 1.555
P8R1 1 5.815
P8R2 1 0.955
在后续的表13中，还列出了第三实施方式中各种参数与条件式中已规定的参数所对应的值。
图10、图11分别示出了波长为650nm、610nm、555nm、510nm、 和470nm的光经过第三实施方式的摄像光学镜头30后的轴向像差以及倍率色差示意图。图12则示出了，波长为555nm的光经过第三实施方式的摄像光学镜头30后的场曲及畸变示意图。图12的场曲S是弧矢方向的场曲，T是子午方向的场曲。
在本实施方式中，所述摄像光学镜头的入瞳直径为4.679mm，全视场像高为8.000mm，对角线方向的视场角为80.00°，广角、超薄，其轴上、轴外色像差充分补正，且具有优秀的光学特征。
以下表13按照上述条件式列出了本实施方式中对应各条件式的数值。显然，本实施方式的摄像光学镜头满足上述的条件式。
【表13】
参数及条件式 实施例1 实施例2 实施例3
f1/f 0.74 0.84 0.66
f4/f 2.85 2.30 4.89
f5/f -3.31 -5.39 -2.70
f 9.026 9.030 9.031
f1 6.695 7.585 5.996
f2 -18.722 -25.789 -13.082
f3 -163.101 -45.283 47.511
f4 25.760 20.769 44.159
f5 -29.840 -48.708 -24.417
f6 -49.658 -21.794 -57.780
f7 14.340 9.678 13.650
f8 -7.376 -6.451 -6.241
f12 9.277 9.812 9.474
FNO 1.93 1.95 1.93
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (11)

  1. 一种摄像光学镜头，其特征在于，所述摄像光学镜头自物侧至像侧依序包含：具有正屈折力的第一透镜，具有负屈折力的第二透镜，第三透镜，具有正屈折力的第四透镜，具有负屈折力的第五透镜，具有负屈折力的第六透镜，具有正屈折力的第七透镜，以及具有负屈折力的第八透镜；
    所述摄像光学镜头的焦距为f，所述第一透镜的焦距为f1，所述第四透镜的焦距为f4，所述第五透镜的焦距为f5，且满足下列关系式：
    0.65≤f1/f≤0.85；
    2.00≤f4/f≤5.00；
    -5.50≤f5/f≤-2.50。
  2. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第七透镜物侧面的曲率半径为R13，所述第七透镜像侧面的曲率半径为R14，且满足下列关系式：
    -5.00≤(R13+R14)/(R13-R14)≤-1.00。
  3. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第五透镜的轴上厚度为d9，第五透镜的像侧面到第六透镜的物侧面的轴上距离为d10，且满足下列关系式：
    1.50≤d10/d9≤2.50。
  4. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第一透镜的轴上厚度为d1，所述摄像光学镜头的光学总长为TTL，所述第一透镜物侧面的曲率半径为R1，所述第一透镜像侧面的曲率半径为R2，且满足下列关系式：
    0.07≤d1/TTL≤0.21；
    -3.97≤(R1+R2)/(R1-R2)≤-0.78。
  5. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第二透镜的焦距为f2，所述第二透镜的轴上厚度为d3，所述摄像光学镜头的光学总长为TTL，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的 曲率半径为R4，且满足下列关系式：
    0.02≤d3/TTL≤0.05；
    0.64≤(R3+R4)/(R3-R4)≤6.98；
    -5.71≤f2/f≤-0.97。
  6. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第三透镜的焦距为f3，所述第三透镜的轴上厚度为d5，所述摄像光学镜头的光学总长为TTL，所述第三透镜物侧面的曲率半径为R5，所述第三透镜像侧面的曲率半径为R6，且满足下列关系式：
    0.02≤d5/TTL≤0.06；
    -2.74≤(R5+R6)/(R5-R6)≤2.64；
    -36.14≤f3/f≤7.89。
  7. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第四透镜的轴上厚度为d7，所述摄像光学镜头的光学总长为TTL，所述第四透镜物侧面的曲率半径为R7，所述第四透镜像侧面的曲率半径为R8，且满足下列关系式：
    0.02≤d7/TTL≤0.07；
    -0.86≤(R7+R8)/(R7-R8)≤9.27。
  8. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第五透镜的轴上厚度为d9，所述摄像光学镜头的光学总长为TTL，所述第五透镜物侧面的曲率半径为R9，所述第五透镜像侧面的曲率半径为R10，且满足下列关系式：
    0.02≤d9/TTL≤0.05；
    -3.80≤(R9+R10)/(R9-R10)≤4.40。
  9. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第六透镜的焦距为f6，所述第六透镜的轴上厚度为d11，所述摄像光学镜头的光学总长为TTL，所述第六透镜物侧面的曲率半径为R11，所述第六透镜像侧面的曲率半径为R12，且满足下列关系式：
    0.03≤d11/TTL≤0.08；
    -11.91≤(R11+R12)/(R11-R12)≤-1.27；
    -12.80≤f6/f≤-1.61。
  10. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第七透镜的焦距为f7，所述第七透镜的轴上厚度为d13，所述摄像光学镜头的光学总长为TTL，且满足下列关系式：
    0.03≤d13/TTL≤0.11；
    0.54≤f7/f≤2.38。
  11. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第八透镜的焦距为f8，所述第八透镜的轴上厚度为d15，所述摄像光学镜头的光学总长为TTL，所述第八透镜物侧面的曲率半径为R15，所述第八透镜像侧面的曲率半径为R16，且满足下列关系式：
    0.03≤d15/TTL≤0.13；
    -1.53≤(R15+R16)/(R15-R16)≤-0.23；
    -1.63≤f8/f≤-0.46。
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CN115561877A (zh) * 2021-07-01 2023-01-03 浙江舜宇光学有限公司 光学成像镜头

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI709777B (zh) 2019-11-15 2020-11-11 大立光電股份有限公司 攝像鏡頭組、取像裝置及電子裝置
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WO2021119883A1 (zh) * 2019-12-16 2021-06-24 诚瑞光学(常州)股份有限公司 摄像光学镜头
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WO2021127869A1 (zh) * 2019-12-23 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021127884A1 (zh) * 2019-12-23 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021127871A1 (zh) * 2019-12-23 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021127818A1 (zh) * 2019-12-23 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
CN111025555B (zh) * 2019-12-23 2021-10-08 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021127844A1 (zh) * 2019-12-23 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021127808A1 (zh) * 2019-12-23 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
CN111025554B (zh) * 2019-12-23 2021-12-14 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021127812A1 (zh) * 2019-12-23 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
CN111007633B (zh) * 2019-12-23 2021-12-14 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021128392A1 (zh) * 2019-12-28 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021128395A1 (zh) * 2019-12-28 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021128394A1 (zh) * 2019-12-28 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
CN111077657B (zh) * 2019-12-28 2021-09-24 诚瑞光学(常州)股份有限公司 摄像光学镜头
WO2021128381A1 (zh) * 2019-12-28 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
CN111290104B (zh) * 2020-02-20 2024-11-26 浙江舜宇光学有限公司 光学成像系统
EP3961283A4 (en) * 2020-03-11 2022-10-19 Jiangxi Jingchao Optical Co., Ltd. OPTICAL SYSTEM, CAMERA MODULE AND ELECTRONIC DEVICE
JP6748322B1 (ja) * 2020-03-25 2020-08-26 エーエーシー オプティックス ソリューションズ ピーティーイー リミテッド 撮像レンズ
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CN112230380B (zh) * 2020-10-30 2021-10-01 诚瑞光学(苏州)有限公司 摄像光学镜头
CN112698493B (zh) * 2020-12-30 2022-04-29 诚瑞光学(苏州)有限公司 摄像光学镜头
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CN115494626B (zh) * 2022-09-27 2024-10-15 舜宇光学(中山)有限公司 定焦镜头
WO2024116818A1 (ja) * 2022-12-01 2024-06-06 ソニーグループ株式会社 レンズ光学系および撮像装置
CN119335679B (zh) * 2024-12-19 2025-04-25 西安中科飞图光电科技有限公司 一种宽波段大相对孔径低畸变紫外调焦光学系统及镜头

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107703609A (zh) * 2017-11-22 2018-02-16 浙江舜宇光学有限公司 光学成像镜头
CN109541781A (zh) * 2018-07-20 2019-03-29 瑞声声学科技(深圳)有限公司 摄像镜头
CN109765679A (zh) * 2019-03-29 2019-05-17 广东旭业光电科技股份有限公司 光学成像镜头及电子设备
CN209070190U (zh) * 2017-11-08 2019-07-05 三星电机株式会社 光学成像系统

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS593725B2 (ja) * 1978-01-27 1984-01-25 旭光学工業株式会社 レトロフオ−カス型広角写真レンズ
JP2800293B2 (ja) * 1989-08-18 1998-09-21 株式会社ニコン 投影レンズ
JP2002098894A (ja) * 2000-09-26 2002-04-05 Canon Inc ズームレンズ及びそれを有した光学機器
JP5616535B2 (ja) * 2011-11-09 2014-10-29 富士フイルム株式会社 撮像レンズおよび撮像装置
CN103917907B (zh) * 2011-11-09 2016-05-18 富士胶片株式会社 摄像透镜及摄像装置
JP2013235239A (ja) * 2012-04-12 2013-11-21 Konica Minolta Inc マクロレンズおよび撮像装置
TWI553341B (zh) * 2015-08-11 2016-10-11 大立光電股份有限公司 影像擷取鏡片組、取像裝置及電子裝置
JP6478903B2 (ja) * 2015-12-21 2019-03-06 カンタツ株式会社 撮像レンズ
JP2017227667A (ja) * 2016-06-20 2017-12-28 株式会社リコー 結像レンズおよびカメラおよび検査装置
CN108107545B (zh) * 2017-09-29 2020-02-04 玉晶光电(厦门)有限公司 光学成像镜头
US10962742B2 (en) * 2017-10-24 2021-03-30 Zhejiang Sunny Optical Co., Ltd. Optical imaging lens assembly
US10935759B2 (en) * 2017-11-08 2021-03-02 Samsung Electro-Mechanics Co., Ltd. Optical imaging system
WO2019091170A1 (zh) * 2017-11-10 2019-05-16 浙江舜宇光学有限公司 摄像透镜组
CN107741630B (zh) * 2017-11-22 2020-04-21 浙江舜宇光学有限公司 光学成像镜头
CN107831588B (zh) * 2017-11-29 2019-11-26 浙江舜宇光学有限公司 光学成像镜头
CN207557562U (zh) * 2017-11-29 2018-06-29 浙江舜宇光学有限公司 光学成像镜头
CN118295106A (zh) * 2017-12-29 2024-07-05 玉晶光电(厦门)有限公司 光学成像镜头
CN108254890A (zh) * 2017-12-29 2018-07-06 玉晶光电(厦门)有限公司 光学成像镜头
CN108121056A (zh) * 2017-12-29 2018-06-05 玉晶光电(厦门)有限公司 光学成像镜头
CN111061042A (zh) * 2017-12-29 2020-04-24 玉晶光电(厦门)有限公司 光学成像镜头
CN115561882B (zh) * 2017-12-29 2026-04-17 玉晶光电(厦门)有限公司 光学成像镜头
JP6653111B2 (ja) * 2018-05-07 2020-02-26 カンタツ株式会社 撮像レンズ
TWI684024B (zh) * 2018-07-04 2020-02-01 大立光電股份有限公司 攝影光學鏡組、取像裝置及電子裝置
CN109343205B (zh) * 2018-12-14 2024-07-26 浙江舜宇光学有限公司 光学成像镜头
TWI684807B (zh) * 2019-06-14 2020-02-11 大立光電股份有限公司 光學透鏡系統、取像裝置及電子裝置
CN110412749B (zh) * 2019-08-28 2024-04-19 浙江舜宇光学有限公司 光学成像镜头

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209070190U (zh) * 2017-11-08 2019-07-05 三星电机株式会社 光学成像系统
CN107703609A (zh) * 2017-11-22 2018-02-16 浙江舜宇光学有限公司 光学成像镜头
CN109541781A (zh) * 2018-07-20 2019-03-29 瑞声声学科技(深圳)有限公司 摄像镜头
CN109765679A (zh) * 2019-03-29 2019-05-17 广东旭业光电科技股份有限公司 光学成像镜头及电子设备

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112987258A (zh) * 2021-03-30 2021-06-18 江西晶超光学有限公司 光学系统、取像模组及电子设备
CN115561877A (zh) * 2021-07-01 2023-01-03 浙江舜宇光学有限公司 光学成像镜头

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