WO2020024634A1 - 光学成像镜片组 - Google Patents

光学成像镜片组 Download PDF

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Publication number
WO2020024634A1
WO2020024634A1 PCT/CN2019/084947 CN2019084947W WO2020024634A1 WO 2020024634 A1 WO2020024634 A1 WO 2020024634A1 CN 2019084947 W CN2019084947 W CN 2019084947W WO 2020024634 A1 WO2020024634 A1 WO 2020024634A1
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Prior art keywords
lens
optical imaging
lens group
imaging lens
object side
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PCT/CN2019/084947
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English (en)
French (fr)
Inventor
李龙
吕赛锋
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浙江舜宇光学有限公司
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Publication of WO2020024634A1 publication Critical patent/WO2020024634A1/zh
Priority to US17/060,632 priority Critical patent/US11988812B2/en

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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
    • G02B13/18—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
    • 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

Definitions

  • the present application relates to an optical imaging lens group, and more particularly, the present application relates to an optical imaging lens group including eight lenses.
  • the present application provides an optical imaging lens set that is applicable to portable electronic products and can at least partially solve at least one of the above disadvantages in the prior art.
  • the present application provides such an optical imaging lens group.
  • the lens group includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, and a fourth lens having optical power.
  • the first lens and the fourth lens may each have a positive power; the eighth lens may have a negative power; the object side of the third lens may be convex, and the image side may be concave; the object side of the fourth lens may be Concave, image side can be convex.
  • the total effective focal length f of the optical imaging lens group, the effective focal length f2 of the second lens, and the effective focal length f3 of the third lens may satisfy
  • the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens may satisfy 1 ⁇ f1 / f4 ⁇ 2.5.
  • the total effective focal length f of the optical imaging lens group, the effective focal length f5 of the fifth lens, and the effective focal length f6 of the sixth lens may satisfy
  • the effective focal length f8 of the eighth lens and the total effective focal length f of the optical imaging lens group may satisfy -1.5 ⁇ f8 / f ⁇ -0.5.
  • the curvature radius R1 of the object side of the first lens and the curvature radius R2 of the image side of the first lens may satisfy 0.2 ⁇ R1 / R2 ⁇ 0.7.
  • the curvature radius R5 of the object side of the third lens and the curvature radius R6 of the image side of the third lens may satisfy 1 ⁇ R5 / R6 ⁇ 1.8.
  • the curvature radius R8 of the image side of the fourth lens and the curvature radius R7 of the object side of the fourth lens may satisfy 0 ⁇ R8 / R7 ⁇ 0.5.
  • the curvature radius R12 of the image side of the sixth lens and the curvature radius R11 of the object side of the sixth lens may satisfy 0.5 ⁇ R12 / R11 ⁇ 1.
  • the total effective focal length f of the optical imaging lens group and the curvature radius R16 of the image side of the eighth lens may satisfy 0.5 ⁇ f / R16 ⁇ 1.5.
  • the distance T67 between the sixth lens and the seventh lens on the optical axis and the center thickness CT7 of the seventh lens on the optical axis may satisfy 1.8 ⁇ T67 / CT7 ⁇ 3.
  • the center thickness CT4 of the fourth lens on the optical axis and the distance TTL on the optical axis from the object side of the first lens to the imaging surface of the optical imaging lens group can satisfy 1 ⁇ CT4 / TTL * 10 ⁇ 1.5 .
  • the distance TTL on the optical axis from the object side of the first lens to the imaging surface of the optical imaging lens group and half the diagonal length of the effective pixel area ImgH on the imaging surface of the optical imaging lens group can satisfy TTL / ImgH ⁇ 1.6.
  • the half of the diagonal length of the effective pixel area ImgH on the imaging surface of the optical imaging lens group and the total effective focal length f of the optical imaging lens group may satisfy ImgH / f ⁇ 1.
  • the total effective focal length f of the optical imaging lens group and the entrance pupil diameter EPD of the optical imaging lens group may satisfy f / EPD ⁇ 1.9.
  • This application uses multiple (for example, six) lenses, and by reasonably allocating the power, surface shape, center thickness of each lens, and the axial distance between each lens, etc., the above-mentioned optical imaging lens group has At least one of the beneficial effects of large aperture, low sensitivity, and high image quality.
  • FIG. 1 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 1 of the present application
  • FIGS. 2A to 2D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and distortion curves of the optical imaging lens group of Embodiment 1; Magnification chromatic aberration curve;
  • FIG. 3 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 2 of the present application
  • FIGS. 4A to 4D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and distortion curves of the optical imaging lens group of Embodiment 2; Magnification chromatic aberration curve;
  • FIG. 5 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 3 of the present application
  • FIGS. 6A to 6D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and distortion curves of the optical imaging lens group of Embodiment 3; Magnification chromatic aberration curve;
  • FIG. 7 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 4 of the present application
  • FIGS. 8A to 8D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and distortion curves of the optical imaging lens group of Embodiment 4; Magnification chromatic aberration curve;
  • FIG. 9 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 5 of the present application
  • FIGS. 10A to 10D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and distortion curves of the optical imaging lens group of Embodiment 5; Magnification chromatic aberration curve;
  • FIG. 11 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 6 of the present application
  • FIGS. 12A to 12D show axial chromatic aberration curves, astigmatism curves, distortion curves, and Magnification chromatic aberration curve;
  • FIG. 13 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 7 of the present application
  • FIGS. 14A to 14D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and distortion curves of the optical imaging lens group of Embodiment 7; Magnification chromatic aberration curve;
  • FIG. 15 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 8 of the present application
  • FIGS. 16A to 16D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and distortion curves of the optical imaging lens group of Embodiment 8; Magnification chromatic aberration curve;
  • FIG. 17 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 9 of the present application
  • FIGS. 18A to 18D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and distortion curves of the optical imaging lens group of Embodiment 9; Magnification chromatic aberration curve;
  • FIG. 19 shows a schematic structural diagram of an optical imaging lens group according to Embodiment 10 of the present application
  • FIGS. 20A to 20D show axial chromatic aberration curves, astigmatism curves, distortion curves, and Magnification chromatic aberration curve.
  • first, second, third, etc. are only used to distinguish one feature from another feature, and do not indicate any limitation on the feature. Therefore, without departing from the teachings of this application, a first lens discussed below may also be referred to as a second lens or a third lens.
  • the thickness, size, and shape of the lens have been slightly exaggerated.
  • the shape of the spherical or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings.
  • the drawings are only examples and are not drawn to scale.
  • the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial area; if the lens surface is concave and the concave position is not defined, it means that the lens surface is at least in the paraxial area Concave.
  • the surface of each lens closest to the object side is called the object side of the lens, and the surface of each lens closest to the image side is called the image side of the lens.
  • the optical imaging lens group may include, for example, eight lenses having optical power, that is, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, The seventh lens and the eighth lens. These eight lenses are arranged in order from the object side to the image side along the optical axis, and any two adjacent lenses can have an air gap.
  • the first lens may have a positive power
  • the second lens may have a positive power or a negative power
  • the third lens may have a positive power or a negative power
  • the object side may be convex, like The side can be concave
  • the fourth lens can have positive power
  • the object side can be concave
  • the image side can be convex
  • the fifth lens has positive or negative power
  • the sixth lens has positive or negative power Power
  • the seventh lens may have a positive or negative power
  • the eighth lens may have a negative power.
  • the object side surface of the first lens may be a convex surface
  • the image side surface may be a concave surface
  • the object-side surface of the fifth lens may be a concave surface, and the image-side surface may be a convex surface.
  • the object side of the sixth lens may be convex, and the image side may be concave.
  • the object side of the seventh lens may be convex.
  • the object-side surface of the eighth lens may be concave, and the image-side surface may be concave.
  • the optical imaging lens group of the present application may satisfy the conditional expression 1 ⁇ f1 / f4 ⁇ 2.5, where f1 is an effective focal length of the first lens and f4 is an effective focal length of the fourth lens. More specifically, f1 and f4 can further satisfy 1.83 ⁇ f1 / f4 ⁇ 2.42.
  • Reasonably distributing the power of the first lens and the fourth lens can effectively reduce the aberrations of the entire system and reduce the sensitivity of the system.
  • Reasonably controlling the effective focal length of the first lens is beneficial to avoiding an excessively large inclination angle of the object side surface of the first lens, which can make the first lens have better processability. Satisfying the conditional expression 1 ⁇ f1 / f4 ⁇ 2.5 is also conducive to avoiding problems such as poor system imaging quality and high sensitivity caused by an excessively large fourth lens aperture.
  • the optical imaging lens group of the present application may satisfy a conditional expression -1.5 ⁇ f8 / f ⁇ -0.5, where f8 is an effective focal length of the eighth lens, and f is a total effective focal length of the optical imaging lens group. More specifically, f8 and f can further satisfy -1.04 ⁇ f8 / f ⁇ -0.71. Reasonably controlling the ratio of the total effective focal length of the lens group to the effective focal length of the eighth lens can ensure that the system has a higher aberration correction ability while keeping the system size at a small level.
  • the optical imaging lens group of the present application can satisfy the conditional expression 1 ⁇ R5 / R6 ⁇ 1.8, where R5 is the curvature radius of the object side of the third lens and R6 is the curvature radius of the image side of the third lens. More specifically, R5 and R6 can further satisfy 1.00 ⁇ R5 / R6 ⁇ 1.76. Reasonable distribution of the curvature radii of the object side and the image side of the third lens can effectively correct the chromatic aberration of the system and achieve the balance of various aberrations. When the ratio of R5 / R6 is too large or too small, it is not conducive to the correction of system chromatic aberration.
  • the optical imaging lens group of the present application may satisfy the conditional TTL / ImgH ⁇ 1.6, where TTL is an axial distance from the object side of the first lens to the imaging surface of the optical imaging lens group, and ImgH is optical The half of the diagonal of the effective pixel area on the imaging surface of the imaging lens group. More specifically, TTL and ImgH can further satisfy 1.45 ⁇ TTL / ImgH ⁇ 1.59. Meeting the conditional TTL / ImgH ⁇ 1.6 can effectively reduce the overall size of the lens group, realize the ultra-thin characteristics and miniaturization of the lens group, so that the lens group can be better applied to more and more ultra-thin electronics on the market product.
  • the optical imaging lens group of the present application can satisfy the conditional expression
  • Effective focal length, f3 is the effective focal length of the third lens. More specifically, f, f2, and f3 can further satisfy 0 ⁇
  • the reasonable allocation of the total effective focal length of the lens group and the effective focal length of the second and third lenses can effectively shorten the size of the lens group and help to maintain the ultra-thin characteristics of the lens group while avoiding excessive concentration of the system's optical power. It satisfies the conditional expression
  • the optical imaging lens group of the present application can satisfy the conditional expression
  • Focal length, f6 is the effective focal length of the sixth lens. More specifically, f, f5, and f6 can further satisfy 0 ⁇
  • the reasonable allocation of the total effective focal length of the lens group and the effective focal lengths of the fifth and sixth lenses can effectively reduce the size of the lens group and help to maintain the ultra-thin characteristics of the lens group while avoiding excessive concentration of system power. It satisfies the conditional expression
  • the optical imaging lens group of the present application can satisfy the conditional expression 0 ⁇ R8 / R7 ⁇ 0.5, where R8 is the curvature radius of the image side of the fourth lens and R7 is the curvature radius of the object side of the fourth lens. More specifically, R8 and R7 can further satisfy 0.1 ⁇ R8 / R7 ⁇ 0.27.
  • the curvature radii of the object side and the image side of the fourth lens are reasonably allocated, so that the fourth lens can cooperate well with the first three lenses, which is beneficial to better correct the system aberration and chromatic aberration.
  • the optical imaging lens group of the present application can satisfy the conditional expression 0.5 ⁇ R12 / R11 ⁇ 1, where R12 is the curvature radius of the image side of the sixth lens and R11 is the curvature radius of the object side of the sixth lens. More specifically, R12 and R11 can further satisfy 0.61 ⁇ R12 / R11 ⁇ 0.97. Reasonably distributing the curvature radii of the object side and the image side of the sixth lens can effectively balance the astigmatism and coma of the sixth lens and the front lens, so that the lens group can maintain better imaging quality.
  • the optical imaging lens group of the present application can satisfy the conditional expression f / EPD ⁇ 1.9, where f is the total effective focal length of the optical imaging lens group, and EPD is the entrance pupil diameter of the optical imaging lens group. More specifically, f and EPD can further satisfy 1.53 ⁇ f / EPD ⁇ 1.82. Controlling the range of the ratio of f and EPD can effectively increase the light flux per unit time of the lens group, so that the lens group has a high degree of contrast, which can further improve the imaging quality of the lens group in a dark environment, so that The lens group is more practical.
  • the optical imaging lens group of the present application can satisfy the conditional expression 1.8 ⁇ T67 / CT7 ⁇ 3, where T67 is the distance between the sixth lens and the seventh lens on the optical axis, and CT7 is the seventh lens. Center thickness on the optical axis. More specifically, T67 and CT7 can further satisfy 1.95 ⁇ T67 / CT7 ⁇ 2.97. Reasonably controlling the air gap between the sixth lens and the seventh lens and the medium thickness of the seventh lens can effectively reduce the risk of ghosting in the system and help to reduce the size of the lens group.
  • the optical imaging lens group of the present application can satisfy the conditional expression 1 ⁇ CT4 / TTL * 10 ⁇ 1.5, where CT4 is the center thickness of the fourth lens on the optical axis, and TTL is the object of the first lens.
  • CT4 and TTL can further satisfy 1.20 ⁇ CT4 / TTL * 10 ⁇ 1.49.
  • Reasonably controlling the center thickness of the fourth lens is beneficial to the miniaturization of the system and reduces the risk of ghosting in the system.
  • the combination of the fourth lens and the first three lenses can effectively reduce the chromatic aberration of the system. Satisfying the conditional expression 1 ⁇ CT4 / TTL * 10 ⁇ 1.5 can also avoid processing difficulties caused by the fourth lens being too thin.
  • the optical imaging lens group of the present application can satisfy a conditional expression 0.2 ⁇ R1 / R2 ⁇ 0.7, wherein R1 is a curvature radius of the object side of the first lens and R2 is a curvature radius of the image side of the first lens. More specifically, R1 and R2 can further satisfy 0.42 ⁇ R1 / R2 ⁇ 0.55.
  • Reasonably controlling the curvature radii of the object side and the image side of the first lens can effectively reduce the system size; at the same time, it is conducive to the rational distribution of the system's optical power, so as not to focus on the first lens excessively, which is beneficial to subsequent lenses Aberration correction.
  • the optical imaging lens group of the present application can satisfy the conditional expression 0.5 ⁇ f / R16 ⁇ 1.5, where f is the total effective focal length of the optical imaging lens group, and R16 is the radius of curvature of the image side of the eighth lens. More specifically, f and R16 can further satisfy 0.86 ⁇ f / R16 ⁇ 1.18.
  • the optical imaging lens group of the present application can satisfy the conditional formula ImgH / f ⁇ 1, where ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens group, and f is optical imaging The total effective focal length of the lens group. More specifically, ImgH and f can further satisfy 0.89 ⁇ ImgH / f ⁇ 0.98.
  • the conditional formula ImgH / f ⁇ 1 and the conditional TTL / ImgH ⁇ 1.6 can be combined to make the system support a larger full field of view FOV while obtaining ultra-thin characteristics, thereby having a wider imaging range.
  • the above-mentioned optical imaging lens group may further include a diaphragm to improve the imaging quality of the lens.
  • the diaphragm may be disposed between the object side and the first lens.
  • the above-mentioned optical imaging lens group may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element on the imaging surface.
  • the optical imaging lens set according to the above embodiment of the present application may employ multiple lenses, such as the six described above.
  • the volume of the lens group can be effectively reduced, the sensitivity of the lens group can be reduced, and the usability of the lens group can be improved.
  • Processability makes the optical imaging lens group more conducive to production and processing and is applicable to portable electronic products.
  • the optical imaging lens group configured as described above can also have beneficial effects such as large aperture, low sensitivity, and high imaging quality.
  • aspheric mirror surfaces are often used for each lens.
  • Aspheric lenses are characterized by a curvature that varies continuously from the center of the lens to the periphery of the lens. Unlike spherical lenses, which have a constant curvature from the lens center to the periphery of the lens, aspheric lenses have better curvature radius characteristics, and have the advantages of improving distortion and astigmatic aberrations.
  • the use of aspheric lenses can eliminate as much aberrations as possible during imaging, thereby improving imaging quality.
  • the number of lenses constituting the optical imaging lens group may be changed to obtain various results and advantages described in this specification.
  • the optical imaging lens group is not limited to including eight lenses. If necessary, the optical imaging lens group may further include other numbers of lenses. Specific examples of the optical imaging lens group applicable to the above embodiments will be further described below with reference to the drawings.
  • FIG. 1 is a schematic structural diagram of an optical imaging lens group according to Embodiment 1 of the present application.
  • an optical imaging lens group includes an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, and its object side S1 is convex, and the image side S2 is concave.
  • the second lens E2 has a positive power, its object side S3 is convex, and the image side S4 is convex.
  • the third lens E3 has a negative power.
  • the optical power, the object side S5 is convex, and the image side S6 is concave; the fourth lens E4 has a positive power, the object side S7 is concave, and the image side S8 is convex; the fifth lens E5 has a negative power, which The object side S9 is concave and the image side S10 is convex; the sixth lens E6 has a negative power, the object side S11 is convex, and the image side S12 is concave; the seventh lens E7 has a positive power, and the object side S13 is convex The image side S14 is concave; the eighth lens E8 has negative power, the object side S15 is concave, and the image side S16 is concave.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 1 shows the surface type, the radius of curvature, the thickness, the material, and the conic coefficient of each lens of the optical imaging lens group of Example 1.
  • the units of the radius of curvature and thickness are millimeters (mm).
  • each aspheric lens can be defined using, but not limited to, the following aspheric formula:
  • x is the distance vector from the vertex of the aspheric surface when the aspheric surface is at the height h along the optical axis;
  • k is the conic coefficient (given in Table 1);
  • Ai is the correction coefficient of the aspherical i-th order.
  • Table 2 below shows the higher-order coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18, and A 20 that can be used for each aspherical mirror surface S1-S16 in Example 1. .
  • Table 3 shows the effective focal lengths f1 to f8 of each lens, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging plane S19 of the first lens E1, and the imaging plane S19
  • the diagonal of the upper effective pixel area is half ImgH.
  • FIG. 2A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 1, which indicates that the focal points of light with different wavelengths are deviated after passing through the lens group.
  • FIG. 2B shows an astigmatism curve of the optical imaging lens group of Example 1, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 2C illustrates a distortion curve of the optical imaging lens group of Example 1, which represents the magnitude of distortion at different image heights.
  • FIG. 2D shows the magnification chromatic aberration curve of the optical imaging lens group of Example 1, which represents the deviation of different image heights on the imaging plane after the light passes through the lens group. According to FIG. 2A to FIG. 2D, it can be known that the optical imaging lens group provided in Embodiment 1 can achieve good imaging quality.
  • FIG. 3 is a schematic structural diagram of an optical imaging lens group according to Embodiment 2 of the present application.
  • the optical imaging lens group includes: an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has positive power, and its object side S1 is convex, and the image side S2 is concave.
  • the second lens E2 has positive power, its object side S3 is concave, and the image side S4 is convex;
  • the object side S5 is convex, and the image side S6 is concave.
  • the fourth lens E4 has positive power, the object side S7 is concave, and the image side S8 is convex.
  • the fifth lens E5 has positive power, and its object The side surface S9 is concave, and the image side S10 is convex.
  • the sixth lens E6 has negative power, and its object side S11 is convex, and the image side S12 is concave.
  • the seventh lens E7 has positive power, and its object side S13 is convex.
  • the image side S14 is concave;
  • the eighth lens E8 has a negative power, the object side S15 is concave, and the image side S16 is concave.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 4 shows the surface type, the radius of curvature, the thickness, the material, and the conic coefficient of each lens of the optical imaging lens group of Example 2.
  • the units of the radius of curvature and thickness are millimeters (mm).
  • Table 5 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 2, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 6 shows the effective focal lengths f1 to f8 of each lens, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19
  • the diagonal of the upper effective pixel area is half ImgH.
  • FIG. 4A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 2, which indicates that the focal points of light rays with different wavelengths after passing through the lens group deviate.
  • FIG. 4B shows an astigmatism curve of the optical imaging lens group of Example 2, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 4C shows a distortion curve of the optical imaging lens group of Example 2, which represents the magnitude of the distortion at different image heights.
  • FIG. 4D shows a magnification chromatic aberration curve of the optical imaging lens group of Example 2, which represents the deviation of different image heights on the imaging plane after the light passes through the lens group. It can be known from FIG. 4A to FIG. 4D that the optical imaging lens group provided in Embodiment 2 can achieve good imaging quality.
  • FIG. 5 is a schematic structural diagram of an optical imaging lens group according to Embodiment 3 of the present application.
  • the optical imaging lens group includes, in order from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, and its object side S1 is convex, and the image side S2 is concave.
  • the second lens E2 has a positive power, its object side S3 is convex, and the image side S4 is convex.
  • the third lens E3 has a negative power.
  • the optical power, the object side S5 is convex, and the image side S6 is concave;
  • the fourth lens E4 has a positive power, the object side S7 is concave, and the image side S8 is convex;
  • the fifth lens E5 has a negative power, which The object side S9 is concave, and the image side S10 is convex.
  • the sixth lens E6 has positive power, its object side S11 is convex, and the image side S12 is concave.
  • the seventh lens E7 has positive power, and its object side S13 is convex.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 7 shows the surface type, the radius of curvature, the thickness, the material, and the conic coefficient of each lens of the optical imaging lens group of Example 3.
  • the units of the radius of curvature and thickness are millimeters (mm).
  • Table 8 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 3, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 9 shows the effective focal lengths f1 to f8 of each lens in Example 3, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19.
  • the diagonal of the upper effective pixel area is half ImgH.
  • FIG. 6A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 3, which indicates that the focal points of light with different wavelengths deviate after passing through the lens group.
  • FIG. 6B shows an astigmatism curve of the optical imaging lens group of Example 3, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 6C illustrates a distortion curve of the optical imaging lens group of Example 3, which represents the magnitude of distortion at different image heights.
  • FIG. 6D shows the magnification chromatic aberration curve of the optical imaging lens group of Example 3, which represents the deviation of different image heights on the imaging plane after the light passes through the lens group. According to FIG. 6A to FIG. 6D, it can be known that the optical imaging lens group provided in Embodiment 3 can achieve good imaging quality.
  • FIG. 7 is a schematic structural diagram of an optical imaging lens group according to Embodiment 4 of the present application.
  • the optical imaging lens group includes an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, and its object side S1 is convex, and the image side S2 is concave.
  • the second lens E2 has a positive power, its object side S3 is concave, and the image side S4 is convex.
  • the object side S5 is convex
  • the image side S6 is concave.
  • the fourth lens E4 has positive power, the object side S7 is concave, and the image side S8 is convex.
  • the fifth lens E5 has positive power, and its object The side surface S9 is concave, and the image side S10 is convex.
  • the sixth lens E6 has positive power, and its object side S11 is convex, and the image side S12 is concave.
  • the seventh lens E7 has positive power, and its object side S13 is convex.
  • the side surface S14 is a convex surface;
  • the eighth lens E8 has a negative power, the object side surface S15 is a concave surface, and the image side surface S16 is a concave surface.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens group of Example 4, where the units of the radius of curvature and thickness are millimeters (mm).
  • Table 11 shows the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 4, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 12 shows the effective focal lengths f1 to f8 of each lens, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19 The diagonal of the upper effective pixel area is half ImgH.
  • FIG. 8A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 4, which indicates that the focal points of light with different wavelengths are deviated after passing through the lens group.
  • FIG. 8B shows the astigmatism curve of the optical imaging lens group of Example 4, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 8C shows a distortion curve of the optical imaging lens group of Example 4, which represents the magnitude of the distortion at different image heights.
  • FIG. 8D shows the magnification chromatic aberration curve of the optical imaging lens group of Example 4, which represents the deviation of different image heights on the imaging plane after the light passes through the lens group. According to FIG. 8A to FIG. 8D, it can be known that the optical imaging lens group provided in Embodiment 4 can achieve good imaging quality.
  • FIG. 9 is a schematic structural diagram of an optical imaging lens group according to Embodiment 5 of the present application.
  • the optical imaging lens group includes an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, and its object side S1 is convex, and the image side S2 is concave;
  • the second lens E2 has a negative power, its object side S3 is convex, and the image side S4 is concave;
  • the third lens E3 has Negative power, its object side S5 is convex and image side S6 is concave;
  • fourth lens E4 has a positive power, its object side S7 is concave, and image side S8 is convex;
  • fifth lens E5 has a negative power
  • the object side S9 is concave, and the image side S10 is convex.
  • the sixth lens E6 has positive power, the object side S11 is convex, and the image side S12 is concave.
  • the seventh lens E7 has positive power, and the object side S13 is convex.
  • the image side S14 is convex;
  • the eighth lens E8 has a negative power, the object side S15 is concave, and the image side S16 is concave.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens group of Example 5, where the units of the radius of curvature and thickness are millimeters (mm).
  • Table 14 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 5, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 15 shows the effective focal lengths f1 to f8 of each lens in Example 5, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19.
  • the diagonal of the upper effective pixel area is half ImgH.
  • FIG. 10A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 5, which indicates that the focal points of light rays with different wavelengths are deviated after passing through the lens group.
  • FIG. 10B shows an astigmatism curve of the optical imaging lens group of Example 5, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 10C shows a distortion curve of the optical imaging lens group of Example 5, which represents the magnitude of the distortion at different image heights.
  • FIG. 10D shows the magnification chromatic aberration curve of the optical imaging lens group of Example 5, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. According to FIG. 10A to FIG. 10D, it can be known that the optical imaging lens group provided in Embodiment 5 can achieve good imaging quality.
  • FIG. 11 is a schematic structural diagram of an optical imaging lens group according to Embodiment 6 of the present application.
  • the optical imaging lens group includes an aperture STO, a first lens E1, a second lens E2, a third lens E3, and The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, the object side S1 is convex, and the image side S2 is concave; the second lens E2 has a negative power, the object side S3 is concave, and the image side S4 is concave; the third lens E3 has Positive power, the object side S5 is convex, and the image side S6 is concave; the fourth lens E4 has positive power, its object side S7 is concave, and the image side S8 is convex; the fifth lens E5 has negative power, which The object side S9 is concave, and the image side S10 is convex.
  • the sixth lens E6 has positive power, its object side S11 is convex, and the image side S12 is concave.
  • the seventh lens E7 has positive power, and its object side S13 is convex.
  • the image side S14 is convex;
  • the eighth lens E8 has a negative power, the object side S15 is concave, and the image side S16 is concave.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens group of Example 6, where the units of the radius of curvature and thickness are millimeters (mm).
  • Table 17 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 6, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 18 shows the effective focal lengths f1 to f8 of each lens in Example 6, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19.
  • the diagonal of the upper effective pixel area is half ImgH.
  • FIG. 12A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 6, which indicates that the focal points of light rays with different wavelengths pass through the lens group and deviate.
  • FIG. 12B shows an astigmatism curve of the optical imaging lens group of Example 6, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 12C shows a distortion curve of the optical imaging lens group of Example 6, which represents the magnitude of the distortion at different image heights.
  • FIG. 12D shows the magnification chromatic aberration curve of the optical imaging lens group of Example 6, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. According to FIG. 12A to FIG. 12D, it can be known that the optical imaging lens group provided in Embodiment 6 can achieve good imaging quality.
  • FIG. 13 is a schematic structural diagram of an optical imaging lens group according to Embodiment 7 of the present application.
  • the optical imaging lens group includes, in order from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, the object side S1 is convex, and the image side S2 is concave; the second lens E2 has a negative power, the object side S3 is concave, and the image side S4 is concave; the third lens E3 has Positive power, the object side S5 is convex, and the image side S6 is concave; the fourth lens E4 has positive power, its object side S7 is concave, and the image side S8 is convex; the fifth lens E5 has negative power, which The object side S9 is concave and the image side S10 is convex; the sixth lens E6 has a negative power, the object side S11 is convex, and the image side S12 is concave; the seventh lens E7 has a positive power, and the object side S13 is convex The image side S14 is concave; the eighth lens E8 has negative power, the object side S15 is concave, and the image side S16 is concave.
  • the filter E9 has
  • Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens group of Example 7, where the units of the radius of curvature and thickness are millimeters (mm).
  • Table 20 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 7, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 21 shows the effective focal lengths f1 to f8 of each lens in Example 7, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19.
  • the diagonal of the upper effective pixel area is half ImgH.
  • FIG. 14A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 7, which indicates that the focal points of light rays with different wavelengths after passing through the lens group deviate.
  • FIG. 14B shows an astigmatism curve of the optical imaging lens group of Example 7, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 14C shows a distortion curve of the optical imaging lens group of Example 7, which represents the magnitude of the distortion at different image heights.
  • FIG. 14D shows a magnification chromatic aberration curve of the optical imaging lens group of Example 7, which represents the deviation of different image heights on the imaging plane after the light passes through the lens group.
  • the optical imaging lens group provided in Embodiment 7 can achieve good imaging quality.
  • FIG. 15 is a schematic structural diagram of an optical imaging lens group according to Embodiment 8 of the present application.
  • the optical imaging lens group includes an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, the object side S1 is convex, and the image side S2 is concave; the second lens E2 has a negative power, the object side S3 is concave, and the image side S4 is concave; the third lens E3 has Positive power, the object side S5 is convex, and the image side S6 is concave; the fourth lens E4 has positive power, its object side S7 is concave, and the image side S8 is convex; the fifth lens E5 has positive power, its object The side surface S9 is concave, and the image side S10 is convex.
  • the sixth lens E6 has a negative power, and its object side S11 is convex, and the image side S12 is concave.
  • the seventh lens E7 has a negative power, and its object side S13 is concave.
  • the image side S14 is concave;
  • the eighth lens E8 has negative power, the object side S15 is concave, and the image side S16 is concave.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens group of Example 8, where the units of the radius of curvature and thickness are millimeters (mm).
  • Table 23 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 8, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 24 shows the effective focal lengths f1 to f8 of each lens, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19 The diagonal of the upper effective pixel area is half ImgH.
  • FIG. 16A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 8, which indicates that the focal points of the light rays with different wavelengths after passing through the lens group deviate.
  • FIG. 16B shows the astigmatism curve of the optical imaging lens group of Example 8, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 16C shows a distortion curve of the optical imaging lens group of Example 8, which represents the magnitude of the distortion at different image heights.
  • FIG. 16D shows the magnification chromatic aberration curve of the optical imaging lens group of Example 8, which represents the deviation of different image heights on the imaging plane after the light passes through the lens group. According to FIG. 16A to FIG. 16D, it can be known that the optical imaging lens group provided in Embodiment 8 can achieve good imaging quality.
  • FIG. 17 is a schematic structural diagram of an optical imaging lens group according to Embodiment 9 of the present application.
  • the optical imaging lens group includes an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, and its object side S1 is convex, and the image side S2 is concave.
  • the second lens E2 has a positive power, its object side S3 is convex, and the image side S4 is convex.
  • the third lens E3 has a negative power.
  • the object side S5 is convex, and the image side S6 is concave.
  • the fourth lens E4 has positive power, the object side S7 is concave, and the image side S8 is convex.
  • the fifth lens E5 has positive power, and its object The side surface S9 is concave, and the image side S10 is convex.
  • the sixth lens E6 has a negative power, and its object side S11 is convex, and the image side S12 is concave.
  • the seventh lens E7 has a negative power, and its object side S13 is concave.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 25 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens group of Example 9, where the units of the radius of curvature and thickness are millimeters (mm).
  • Table 26 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 9, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above.
  • Table 27 shows the effective focal lengths f1 to f8 of the lenses in Example 9, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19.
  • the diagonal of the upper effective pixel area is half ImgH.
  • FIG. 18A illustrates an on-axis chromatic aberration curve of the optical imaging lens group of Example 9, which indicates that the focal points of light rays with different wavelengths are shifted after passing through the lens group.
  • FIG. 18B shows the astigmatism curve of the optical imaging lens group of Example 9, which shows the meridional image plane curvature and sagittal image plane curvature.
  • FIG. 18C shows a distortion curve of the optical imaging lens group of Example 9, which represents the magnitude of the distortion at different image heights.
  • FIG. 18D shows the magnification chromatic aberration curve of the optical imaging lens group of Example 9, which represents the deviation of different image heights on the imaging surface after the light passes through the lens group. It can be known from FIG. 18A to FIG. 18D that the optical imaging lens group provided in Embodiment 9 can achieve good imaging quality.
  • FIG. 19 is a schematic structural diagram of an optical imaging lens group according to Embodiment 10 of the present application.
  • the optical imaging lens group includes, in order from the object side to the image side along the optical axis, an aperture STO, a first lens E1, a second lens E2, a third lens E3, The fourth lens E4, the fifth lens E5, the sixth lens E6, the seventh lens E7, the eighth lens E8, the filter E9, and the imaging surface S19.
  • the first lens E1 has a positive power, the object side S1 is convex, and the image side S2 is concave;
  • the second lens E2 has a negative power, the object side S3 is concave, and the image side S4 is convex;
  • the third lens E3 has Negative power, its object side S5 is convex, and its image side S6 is concave;
  • fourth lens E4 has a positive power, its object side S7 is concave, and its image side S8 is convex;
  • fifth lens E5 has a positive power, its The object side S9 is concave, and the image side S10 is convex.
  • the sixth lens E6 has a negative power, the object side S11 is convex, and the image side S12 is concave.
  • the seventh lens E7 has a negative power
  • the object side S13 is The concave surface
  • the image side S14 is a concave surface
  • the eighth lens E8 has a negative power
  • the object side surface S15 is a concave surface
  • the image side S16 is a concave surface.
  • the filter E9 has an object side surface S17 and an image side surface S18. The light from the object sequentially passes through the surfaces S1 to S18 and is finally imaged on the imaging surface S19.
  • Table 28 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens group of Example 10, where the units of the radius of curvature and thickness are millimeters (mm).
  • Table 29 shows the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 10, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 30 shows the effective focal lengths f1 to f8 of the lenses in Example 10, the total effective focal length f of the optical imaging lens group, the distance TTL on the optical axis from the object side S1 to the imaging surface S19 of the first lens E1, and the imaging surface S19.
  • the diagonal of the upper effective pixel area is half ImgH.
  • FIG. 20A shows an on-axis chromatic aberration curve of the optical imaging lens group of Example 10, which indicates that the focal points of light rays with different wavelengths are deviated after passing through the lens group.
  • FIG. 20B shows an astigmatism curve of the optical imaging lens group of Example 10, which represents a meridional image plane curvature and a sagittal image plane curvature.
  • FIG. 20C shows a distortion curve of the optical imaging lens group of Example 10, which represents the magnitude of the distortion at different image heights.
  • FIG. 20D shows a magnification chromatic aberration curve of the optical imaging lens group of Example 10, which represents the deviation of different image heights on the imaging surface after light passes through the lens group. According to FIG. 20A to FIG. 20D, it can be known that the optical imaging lens group provided in Embodiment 10 can achieve good imaging quality.
  • Examples 1 to 10 satisfy the relationships shown in Table 31, respectively.
  • the present application also provides an imaging device whose electronic photosensitive element may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).
  • the imaging device may be an independent imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a mobile phone.
  • the imaging device is equipped with the optical imaging lens group described above.

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Abstract

一种光学成像镜片组，该镜片组沿着光轴由物侧至像侧依序包括：具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜和第八透镜。其中，第一透镜和第四透镜均具有正光焦度；第八透镜具有负光焦度；第三透镜的物侧面为凸面，像侧面为凹面；第四透镜的物侧面为凹面，像侧面为凸面；以及光学成像镜片组的总有效焦距f、第二透镜的有效焦距f2与第三透镜的有效焦距f3满足|f/f2|+|f/f3|＜1。

Description

光学成像镜片组
相关申请的交叉引用
本申请要求于2018年08月02日提交于中国国家知识产权局(CNIPA)的、专利申请号为201810871383.8的中国专利申请的优先权和权益，该中国专利申请通过引用整体并入本文。
技术领域
本申请涉及一种光学成像镜片组，更具体地，本申请涉及一种包括八片透镜的光学成像镜片组。
背景技术
目前，智能手机已经成为人们生活中所必不可少的便携式电子产品之一，随着手机行业的迅猛发展，消费者对于搭载在手机上的摄像镜头的像素和像质的要求越来越高。理论上，通过增加镜头的透镜片数来平衡各类像差可以大幅度提升镜头的成像质量。但是，增加透镜片数势必会增加镜头的尺寸，这与当前大多数便携式电子产品的超薄化趋势相悖。因此，如何在镜头尺寸保持不变甚至变得更小的情况下设计出具有更高成像质量的、能够与更高像素的图像传感器以及更强的图像处理技术相匹配的镜头成为目前亟待解决的问题。
发明内容
本申请提供了可适用于便携式电子产品的、可至少解决或部分解决现有技术中的上述至少一个缺点的光学成像镜片组。
一方面，本申请提供这样一种光学成像镜片组，该镜片组沿着光轴由物侧至像侧依序包括：具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜和第八透镜。其中，第一透镜和第四透镜均可具有正光焦度；第八透镜可具有负光焦度；第三透镜的物侧面可为凸面，像侧面可为凹面；第四透镜的物侧面可为凹面，像侧面可为凸面。
在一个实施方式中，光学成像镜片组的总有效焦距f、第二透镜的有效焦距f2与第三透镜的有效焦距f3可满足|f/f2|+|f/f3|＜1。
在一个实施方式中，第一透镜的有效焦距f1与第四透镜的有效焦距f4可满足1＜f1/f4＜2.5。
在一个实施方式中，光学成像镜片组的总有效焦距f、第五透镜的有效焦距f5与第六透镜的有效焦距f6可满足|f/(f5+f6)|＜0.4。
在一个实施方式中，第八透镜的有效焦距f8与光学成像镜片组的总有效焦距f可满足-1.5＜f8/f＜-0.5。
在一个实施方式中，第一透镜的物侧面的曲率半径R1与第一透镜的像侧面的曲率半径R2可满足0.2＜R1/R2＜0.7。
在一个实施方式中，第三透镜的物侧面的曲率半径R5与第三透镜的像侧面的曲率半径R6可满足1≤R5/R6≤1.8。
在一个实施方式中，第四透镜的像侧面的曲率半径R8与第四透镜的物侧面的曲率半径R7可满足0＜R8/R7＜0.5。
在一个实施方式中，第六透镜的像侧面的曲率半径R12与第六透镜的物侧面的曲率半径R11可满足0.5＜R12/R11＜1。
在一个实施方式中，光学成像镜片组的总有效焦距f与第八透镜像侧面的曲率半径R16可满足0.5＜f/R16＜1.5。
在一个实施方式中，第六透镜和第七透镜在光轴上的间隔距离T67与第七透镜在光轴上的中心厚度CT7可满足1.8＜T67/CT7＜3。
在一个实施方式中，第四透镜在光轴上的中心厚度CT4与第一透镜的物侧面至光学成像镜片组的成像面在光轴上的距离TTL可满足1＜CT4/TTL*10＜1.5。
在一个实施方式中，第一透镜的物侧面至光学成像镜片组的成像面在光轴上的距离TTL与光学成像镜片组的成像面上有效像素区域对角线长的一半ImgH可满足TTL/ImgH≤1.6。
在一个实施方式中，光学成像镜片组的成像面上有效像素区域对角线长的一半ImgH与光学成像镜片组的总有效焦距f可满足ImgH/f＜1。
在一个实施方式中，光学成像镜片组的总有效焦距f与光学成像镜片组的入瞳直径EPD可满足f/EPD＜1.9。
本申请采用了多片(例如，六片)透镜，通过合理分配各透镜的光焦度、面型、各透镜的中心厚度以及各透镜之间的轴上间距等，使得上述光学成像镜片组具有大光圈、低敏感性和高成像品质等至少一个有益效果。
附图说明
结合附图，通过以下非限制性实施方式的详细描述，本申请的其他特征、目的和优点将变得更加明显。在附图中：
图1示出了根据本申请实施例1的光学成像镜片组的结构示意图；图2A至图2D分别示出了实施例1的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图3示出了根据本申请实施例2的光学成像镜片组的结构示意图；图4A至图4D分别示出了实施例2的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图5示出了根据本申请实施例3的光学成像镜片组的结构示意图；图6A至图6D分别示出了实施例3的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图7示出了根据本申请实施例4的光学成像镜片组的结构示意图；图8A至图8D分别示出了实施例4的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图9示出了根据本申请实施例5的光学成像镜片组的结构示意图；图10A至图10D分别示出了实施例5的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图11示出了根据本申请实施例6的光学成像镜片组的结构示意图；图12A至图12D分别示出了实施例6的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图13示出了根据本申请实施例7的光学成像镜片组的结构示意图；图14A至图14D分别示出了实施例7的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图15示出了根据本申请实施例8的光学成像镜片组的结构示意图；图16A至图16D分别示出了实施例8的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图17示出了根据本申请实施例9的光学成像镜片组的结构示意图；图18A至图18D分别示出了实施例9的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线；
图19示出了根据本申请实施例10的光学成像镜片组的结构示意图；图20A至图20D分别示出了实施例10的光学成像镜片组的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线。
具体实施方式
为了更好地理解本申请，将参考附图对本申请的各个方面做出更详细的说明。应理解，这些详细说明只是对本申请的示例性实施方式的描述，而非以任何方式限制本申请的范围。在说明书全文中，相同的附图标号指代相同的元件。表述“和/或”包括相关联的所列项目中的一个或多个的任何和全部组合。
应注意，在本说明书中，第一、第二、第三等的表述仅用于将一个特征与另一个特征区分开来，而不表示对特征的任何限制。因此，在不背离本申请的教导的情况下，下文中讨论的第一透镜也可被称作第二透镜或第三透镜。
在附图中，为了便于说明，已稍微夸大了透镜的厚度、尺寸和形状。具体来讲，附图中所示的球面或非球面的形状通过示例的方式示出。即，球面或非球面的形状不限于附图中示出的球面或非球面的形状。附图仅为示例而并非严格按比例绘制。
在本文中，近轴区域是指光轴附近的区域。若透镜表面为凸面且未界定该凸面位置时，则表示该透镜表面至少于近轴区域为凸面；若透镜表面为凹面且未界定该凹面位置时，则表示该透镜表面至少于近轴区域为凹面。每个透镜最靠近物侧的表面称为该透镜的物侧面，每个透镜最靠近像侧的表面称为该透镜的像侧面。
还应理解的是，用语“包括”、“包括有”、“具有”、“包含”和/或“包含有”，当在本说明书中使用时表示存在所陈述的特征、元件和/或部件，但不排除存在或附加有一个或多个其它特征、元件、部件和/或它们的组合。此外，当诸如“...中的至少一个”的表述出现在所列特征的列表之后时，修饰整个所列特征，而不是修饰列表中的单独元件。此外，当描述本申请的实施方式时，使用“可”表示“本申请的一个或多个实施方式”。并且，用语“示例性的”旨在指代示例或举例说明。
除非另外限定，否则本文中使用的所有用语(包括技术用语和科学用语)均具有与本申请所属领域普通技术人员的通常理解相同的含义。还应理解的是，用语(例如在常用词典中定义的用语)应被解释为具有与它们在相关技术的上下文中的含义一致的含义，并且将不被以理想化或过度正式意义解释，除非本文中明确如此限定。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。以下对本申请的特征、原理和其他方面进行详细 描述。
根据本申请示例性实施方式的光学成像镜片组可包括例如八片具有光焦度的透镜，即，第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜和第八透镜。这八片透镜沿着光轴由物侧至像侧依序排列，且任意相邻两透镜之间均可具有空气间隔。
在示例性实施方式中，第一透镜可具有正光焦度；第二透镜具有正光焦度或负光焦度；第三透镜具有正光焦度或负光焦度，其物侧面可为凸面，像侧面可为凹面；第四透镜可具有正光焦度，其物侧面可为凹面，像侧面可为凸面；第五透镜具有正光焦度或负光焦度；第六透镜具有正光焦度或负光焦度；第七透镜具有正光焦度或负光焦度；以及第八透镜可具有负光焦度。
在示例性实施方式中，第一透镜的物侧面可为凸面，像侧面可为凹面。
在示例性实施方式中，第五透镜的物侧面可为凹面，像侧面可为凸面。
在示例性实施方式中，第六透镜的物侧面可为凸面，像侧面可为凹面。
在示例性实施方式中，第七透镜的物侧面可为凸面。
在示例性实施方式中，第八透镜的物侧面可为凹面，像侧面可为凹面。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式1＜f1/f4＜2.5，其中，f1为第一透镜的有效焦距，f4为第四透镜的有效焦距。更具体地，f1和f4进一步可满足1.83≤f1/f4≤2.42。合理分配第一透镜和第四透镜的光焦度可以有效地减小整个系统的像差，降低系统的敏感性。合理控制第一透镜的有效焦距有利于避免第一透镜物侧面的面倾角过大，可以使得第一透镜拥有更好地加工工艺性。满足条件式1＜f1/f4＜2.5，还有利于避免第四透镜孔径过大而造成的系统成像质量差和敏感性高等问题。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式-1.5＜f8/f＜-0.5，其中，f8为第八透镜的有效焦距，f为光学成像镜片组的总有效焦距。更具体地，f8和f进一步可满足-1.04≤f8/f≤-0.71。合理控制镜片组的总有效焦距与第八透镜的有效焦距的比例，可以在保证系统拥有较高像差矫正能力的同时，使系统尺寸保持在较小水平。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式1≤R5/R6≤1.8，其中，R5为第三透镜物侧面的曲率半径，R6为第三透镜像侧面的曲率半径。更具体地，R5和R6进一步可满足1.00≤R5/R6≤1.76。合理分配第三透镜物侧面和像侧面的曲率半径，可以有效矫正系统色差，实现各种像差的平衡。当R5/R6的比值过大或过小时，均不利于系统色差的矫正。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式TTL/ImgH≤1.6，其中，TTL为第一透镜的物侧面至光学成像镜片组的成像面的轴上距离，ImgH为光学成像镜片组的成像面上有效像素区域对角线长的一半。更具体地，TTL和ImgH进一步可满足1.45≤TTL/ImgH≤1.59。满足条件式TTL/ImgH≤1.6，可以有效地缩小镜头组的总尺寸，实现镜头组的超薄特性和小型化，从而使得镜头组能够更好地适用于市场上愈来愈多的超薄电子产品。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式|f/f2|+|f/f3|＜1，其中，f为光学成像镜片组的总有效焦距，f2为第二透镜的有效焦距，f3为第三透镜的有效焦距。更具体地，f、f2和f3进一步可满足0＜|f/f2|+|f/f3|＜1，例如，0.09≤|f/f2|+|f/f3|≤0.95。合理分配镜头组的总有 效焦距和第二、三透镜的有效焦距，能有效地缩短镜头组尺寸，并有利于在保持镜头组超薄特性的同时，避免系统光焦度的过度集中。满足条件式|f/f2|+|f/f3|＜1，并配合后三片透镜，有利于使系统像差得到更好的校正。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式|f/(f5+f6)|＜0.4，其中，f为光学成像镜片组的总有效焦距，f5为第五透镜的有效焦距，f6为第六透镜的有效焦距。更具体地，f、f5和f6进一步可满足0＜|f/(f5+f6)|＜0.4，例如，0.01≤|f/(f5+f6)|≤0.27。合理分配镜头组的总有效焦距和第五、六透镜的有效焦距，能有效地缩短镜头组尺寸，并有利于在保持镜头组超薄特性的同时，避免系统光焦度的过度集中。满足条件式|f/(f5+f6)|＜0.4，并配合前四片透镜，有利于使系统像差得到更好的校正。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式0＜R8/R7＜0.5，其中，R8为第四透镜像侧面的曲率半径，R7为第四透镜物侧面的曲率半径。更具体地，R8和R7进一步可满足0.1≤R8/R7≤0.27。合理分配第四透镜物侧面和像侧面的曲率半径，使第四透镜能够与前三片透镜良好配合，以有利于更好地矫正系统像差、色差。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式0.5＜R12/R11＜1，其中，R12为第六透镜像侧面的曲率半径，R11为第六透镜物侧面的曲率半径。更具体地，R12和R11进一步可满足0.61≤R12/R11≤0.97。合理分配第六透镜物侧面和像侧面的曲率半径，可以有效地平衡第六透镜与前端透镜的像散和彗差，使镜片组保持更好地成像质量。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式f/EPD＜1.9，其中，f为光学成像镜片组的总有效焦距，EPD为光学成像镜片组的入瞳直径。更具体地，f和EPD进一步可满足1.53≤f/EPD≤1.82。控制f与EPD的比值范围，可以有效地增大镜片组单位时间内的通光量，使得镜片组拥有较高的相对照度，进而可以很好的提升镜片组在较暗环境下的成像质量，让镜片组更具有实用性。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式1.8＜T67/CT7＜3，其中，T67为第六透镜和第七透镜在光轴上的间隔距离，CT7为第七透镜在光轴上的中心厚度。更具体地，T67和CT7进一步可满足1.95≤T67/CT7≤2.97。合理的控制第六透镜和第七透镜之间的空气间隙以及第七透镜的中厚值，可以有效地降低系统产生鬼像的风险，并且有助于压缩镜头组的尺寸。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式1＜CT4/TTL*10＜1.5，其中，CT4为第四透镜在光轴上的中心厚度，TTL为第一透镜的物侧面至光学成像镜片组的成像面的轴上距离。更具体地，CT4和TTL进一步可满足1.20≤CT4/TTL*10≤1.49。合理控制第四透镜的中心厚度，有利于系统的小型化，降低系统产生鬼像的风险。第四透镜与前三片配合，可以有效地降低系统的色差。满足条件式1＜CT4/TTL*10＜1.5，还可以避免由于第四透镜过薄而带来的加工方面的困难。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式0.2＜R1/R2＜0.7，其中，R1为第一透镜物侧面的曲率半径，R2为第一透镜像侧面的曲率半径。更具体地，R1和R2进一步可满足0.42≤R1/R2≤0.55。合理控制第一透镜物侧面和像侧面的曲率半径，可以有效缩减系统尺寸； 同时，有利于使得系统的光焦度得到合理的分配，不至于过度集中在第一透镜上，进而有利于后续透镜的像差矫正。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式0.5＜f/R16＜1.5，其中，f为光学成像镜片组的总有效焦距，R16为第八透镜像侧面的曲率半径。更具体地，f和R16进一步可满足0.86≤f/R16≤1.18。通过将系统的总有效焦距与第八透镜像侧面的曲率半径的比值控制在合理范围，可以使得系统在保持小型化的同时，拥有较高的像差矫正能力和更好的可加工工艺性。
在示例性实施方式中，本申请的光学成像镜片组可满足条件式ImgH/f＜1，其中，ImgH为光学成像镜片组的成像面上有效像素区域对角线长的一半，f为光学成像镜片组的总有效焦距。更具体地，ImgH和f进一步可满足0.89≤ImgH/f≤0.98。条件式ImgH/f＜1与条件式TTL/ImgH≤1.6配合，可以使得系统在获得超薄特性的同时，支持更大的全视场角FOV，进而具有更广的成像范围。另外，通过适当调节像高和系统的总有效焦距，也有利于实现更大的全视场角FOV。
在示例性实施方式中，上述光学成像镜片组还可包括光阑，以提升镜头的成像质量。可选地，光阑可设置在物侧与第一透镜之间。
可选地，上述光学成像镜片组还可包括用于校正色彩偏差的滤光片和/或用于保护位于成像面上的感光元件的保护玻璃。
根据本申请的上述实施方式的光学成像镜片组可采用多片镜片，例如上文所述的六片。通过合理分配各透镜的光焦度、面型、各透镜的中心厚度以及各透镜之间的轴上间距等，可有效地缩小镜片组的体积、降低镜片组的敏感度并提高镜片组的可加工性，使得光学成像镜片组更有利于生产加工并且可适用于便携式电子产品。通过上述配置的光学成像镜片组还可具有大光圈、低敏感度、高成像品质等有益效果。
在本申请的实施方式中，各透镜多采用非球面镜面。非球面透镜的特点是：从透镜中心到透镜周边，曲率是连续变化的。与从透镜中心到透镜周边具有恒定曲率的球面透镜不同，非球面透镜具有更佳的曲率半径特性，具有改善歪曲像差及改善像散像差的优点。采用非球面透镜后，能够尽可能地消除在成像的时候出现的像差，从而改善成像质量。
然而，本领域的技术人员应当理解，在未背离本申请要求保护的技术方案的情况下，可改变构成光学成像镜片组的透镜数量，来获得本说明书中描述的各个结果和优点。例如，虽然在实施方式中以八个透镜为例进行了描述，但是该光学成像镜片组不限于包括八个透镜。如果需要，该光学成像镜片组还可包括其它数量的透镜。下面参照附图进一步描述可适用于上述实施方式的光学成像镜片组的具体实施例。
实施例1
以下参照图1至图2D描述根据本申请实施例1的光学成像镜片组。图1示出了根据本申请实施例1的光学成像镜片组的结构示意图。
如图1所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有正光焦度，其物侧面S3为凸面，像侧面S4为凸面；第三透镜E3具有负光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有负光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有负光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有正光焦度，其物侧面S13为凸面，像侧面S14为凹面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表1示出了实施例1的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。
Figure PCTCN2019084947-appb-000001
表1
由表1可知，第一透镜E1至第八透镜E8中的任意一个透镜的物侧面和像侧面均为非球面。在本实施例中，各非球面透镜的面型x可利用但不限于以下非球面公式进行限定：
Figure PCTCN2019084947-appb-000002
其中，x为非球面沿光轴方向在高度为h的位置时，距非球面顶点的距离矢高；c为非球面的近轴曲率，c＝1/R(即，近轴曲率c为上表1中曲率半径R的倒数)；k为圆锥系数(在表1中已给出)；Ai是非球面第i-th阶的修正系数。下表2给出了可用于实施例1中各非球面镜面S1-S16 的高次项系数A 4、A 6、A 8、A 10、A 12、A 14、A 16、A 18和A 20。
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -1.0280E-02 2.7364E-02 -1.4701E-01 4.3095E-01 -7.5024E-01 8.0456E-01 -5.2180E-01 1.8752E-01 -2.8790E-02
S2 -2.3710E-02 -9.3740E-02 4.1107E-01 -1.1358E+00 2.0098E+00 -2.2577E+00 1.5581E+00 -6.0392E-01 1.0062E-01
S3 -5.6950E-02 -6.4850E-02 1.0650E-01 -2.2168E-01 4.8260E-01 -6.9405E-01 5.8947E-01 -2.7196E-01 5.2854E-02
S4 -5.4360E-02 -1.2379E-01 2.9279E-01 -2.9980E-01 4.6144E-02 2.2996E-01 -2.5776E-01 1.1707E-01 -2.0150E-02
S5 -1.6956E-01 -1.0788E-01 2.4918E-01 -5.1990E-02 -5.2328E-01 9.0138E-01 -6.9936E-01 2.7324E-01 -4.3760E-02
S6 -1.4037E-01 -7.6110E-02 2.8774E-01 -4.1699E-01 3.5529E-01 -1.9303E-01 6.8360E-02 -1.4760E-02 1.4750E-03
S7 7.3610E-03 -3.0000E-04 -3.0250E-02 8.1011E-02 -9.1450E-02 3.8366E-02 2.9820E-03 -6.3200E-03 1.2220E-03
S8 -2.9500E-03 7.0080E-02 -1.1262E-01 1.1892E-01 -7.3050E-02 2.1871E-02 -6.0000E-04 -1.1600E-03 1.7500E-04
S9 -4.8300E-02 8.1461E-02 -1.1878E-01 1.2531E-01 -9.1080E-02 4.3698E-02 -1.3140E-02 2.2490E-03 -1.7000E-04
S10 -7.4920E-02 3.9225E-02 -4.9520E-02 4.9562E-02 -3.3570E-02 1.5254E-02 -4.5700E-03 8.2900E-04 -6.9000E-05
S11 -1.2218E-01 4.5250E-02 -6.6940E-02 5.8834E-02 -3.0820E-02 1.0115E-02 -2.2200E-03 3.3000E-04 -2.6000E-05
S12 -1.2002E-01 4.8185E-02 -6.3390E-02 5.6130E-02 -3.0240E-02 9.9810E-03 -2.0200E-03 2.3300E-04 -1.2000E-05
S13 -1.6940E-02 -2.3750E-02 2.6262E-02 -3.2510E-02 2.3502E-02 -1.0640E-02 2.9930E-03 -4.8000E-04 3.4300E-05
S14 1.3438E-02 -2.1550E-02 1.0266E-02 -3.2700E-03 7.6200E-04 -1.4000E-04 1.7200E-05 -1.3000E-06 3.9400E-08
S15 -8.1860E-02 5.2793E-02 -1.0150E-02 1.0700E-04 2.6300E-04 -4.6000E-05 3.7000E-06 -1.5000E-07 2.3800E-09
S16 -5.0240E-02 2.4566E-02 -6.4500E-03 8.2300E-04 -2.6000E-05 -7.1000E-06 1.0600E-06 -6.0000E-08 1.2500E-09
表2
表3给出实施例1中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
f1(mm) 9.01 f7(mm) 13.56
f2(mm) 9.25 f8(mm) -3.00
f3(mm) -7.33 f(mm) 3.87
f4(mm) 3.73 TTL(mm) 5.53
f5(mm) -67.59 ImgH(mm) 3.56
f6(mm) -31.16
表3
图2A示出了实施例1的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图2B示出了实施例1的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图2C示出了实施例1的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图2D示出了实施例1的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图2A至图2D可知，实施例1所给出的光学成像镜片组能够实现良好的成像品质。
实施例2
以下参照图3至图4D描述根据本申请实施例2的光学成像镜片组。在本实施例及以下实施例中，为简洁起见，将省略部分与实施例1相似的描述。图3示出了根据本申请实施例2的光学成像镜片组的结构示意图。
如图3所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有正光焦度，其物侧面S3为凹面，像侧面S4为凸面；第三透镜E3具有负光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有正光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有负光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有正光焦度，其物侧面S13为凸面，像侧面S14为凹面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表4示出了实施例2的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表5示出了可用于实施例2中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表6给出实施例2中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000003
表4
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -9.9200E-03 2.3219E-02 -1.4075E-01 4.2585E-01 -7.5375E-01 7.9729E-01 -4.9667E-01 1.6598E-01 -2.2760E-02
S2 -2.2460E-02 -7.2010E-02 3.7154E-01 -1.1638E+00 2.2815E+00 -2.8187E+00 2.1246E+00 -8.9317E-01 1.6064E-01
S3 -7.1790E-02 -6.3110E-02 8.5277E-02 -1.8760E-01 5.7136E-01 -1.0405E+00 1.0193E+00 -5.1570E-01 1.0692E-01
S4 -5.5650E-02 -1.7299E-01 4.2793E-01 -6.3286E-01 6.6666E-01 -5.7120E-01 3.7843E-01 -1.6021E-01 3.0516E-02
S5 -1.6281E-01 -1.2739E-01 3.4505E-01 -3.3309E-01 -3.2510E-02 3.6711E-01 -3.4579E-01 1.4405E-01 -2.3810E-02
S6 -1.4197E-01 -7.6040E-02 2.8741E-01 -4.2081E-01 3.6511E-01 -2.0119E-01 7.1449E-02 -1.5260E-02 1.5010E-03
S7 1.2552E-02 -2.2170E-02 2.8051E-02 -2.9610E-02 3.9039E-02 -5.3230E-02 4.0122E-02 -1.4360E-02 1.9500E-03
S8 -1.0600E-03 6.0541E-02 -8.6660E-02 8.1271E-02 -4.4970E-02 1.2991E-02 -1.4600E-03 1.0600E-04 -5.4000E-05
S9 -5.6670E-02 9.3043E-02 -1.2062E-01 1.1230E-01 -7.3620E-02 3.2966E-02 -9.5700E-03 1.6360E-03 -1.3000E-04
S10 -7.3060E-02 4.4646E-02 -6.3450E-02 7.0056E-02 -5.3190E-02 2.7063E-02 -8.8700E-03 1.6910E-03 -1.4000E-04
S11 -1.2031E-01 4.5260E-02 -7.3560E-02 7.9470E-02 -5.3980E-02 2.3631E-02 -6.6800E-03 1.1180E-03 -8.4000E-05
S12 -1.2877E-01 5.0322E-02 -5.8640E-02 5.4255E-02 -3.2380E-02 1.2108E-02 -2.8000E-03 3.6900E-04 -2.1000E-05
S13 -2.4250E-02 -4.9000E-03 -3.2600E-03 -1.4400E-03 2.0690E-03 -1.1600E-03 4.1700E-04 -9.2000E-05 8.5600E-06
S14 4.4080E-03 -8.9900E-03 7.8600E-04 8.5500E-04 -3.5000E-04 5.3700E-05 -3.1000E-06 -3.6000E-08 7.4200E-09
S15 -7.1120E-02 4.8815E-02 -1.0620E-02 6.5600E-04 1.2300E-04 -2.7000E-05 2.2500E-06 -8.7000E-08 1.2600E-09
S16 -5.0900E-02 2.4782E-02 -6.7700E-03 9.7800E-04 -6.2000E-05 -2.4000E-06 7.2300E-07 -4.7000E-08 1.0500E-09
表5
f1(mm) 7.67 f7(mm) 14.13
f2(mm) 11.51 f8(mm) -3.03
f3(mm) -7.17 f(mm) 3.88
f4(mm) 3.66 TTL(mm) 5.46
f5(mm) 179.16 ImgH(mm) 3.56
f6(mm) -18.47
表6
图4A示出了实施例2的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图4B示出了实施例2的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图4C示出了实施例2的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图4D示出了实施例2的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图4A至图4D可知，实施例2所给出的光学成像镜片组能够实现良好的成像品质。
实施例3
以下参照图5至图6D描述了根据本申请实施例3的光学成像镜片组。图5示出了根据本申请实施例3的光学成像镜片组的结构示意图。
如图5所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有正光焦度，其物侧面S3为凸面，像侧面S4为凸面；第三透镜E3具有负光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有负光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有正光焦度，其 物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有正光焦度，其物侧面S13为凸面，像侧面S14为凸面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表7示出了实施例3的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表8示出了可用于实施例3中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表9给出实施例3中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000004
表7
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -8.6800E-03 1.3981E-02 -1.1821E-01 3.9506E-01 -7.1759E-01 7.6890E-01 -4.8731E-01 1.6914E-01 -2.5130E-02
S2 -2.0870E-02 -9.3730E-02 4.4469E-01 -1.3017E+00 2.4306E+00 -2.8739E+00 2.0743E+00 -8.3274E-01 1.4220E-01
S3 -6.6820E-02 -6.7530E-02 8.1223E-02 -1.9553E-01 6.1152E-01 -1.0719E+00 1.0050E+00 -4.8662E-01 9.6256E-02
S4 -5.3420E-02 -1.7338E-01 3.9053E-01 -4.7060E-01 3.1622E-01 -1.1806E-01 3.2364E-02 -1.6310E-02 5.2610E-03
S5 -1.6806E-01 -1.1370E-01 2.7120E-01 -1.3036E-01 -3.5261E-01 6.7422E-01 -5.1837E-01 1.9500E-01 -2.9610E-02
S6 -1.4119E-01 -7.8220E-02 2.9082E-01 -4.2187E-01 3.6006E-01 -1.9512E-01 6.8430E-02 -1.4520E-02 1.4250E-03
S7 7.5380E-03 -4.4500E-03 -6.9900E-03 3.6073E-02 -3.6010E-02 -7.3700E-03 2.6078E-02 -1.2640E-02 1.9410E-03
S8 -5.7200E-03 7.0437E-02 -1.1571E-01 1.2704E-01 -8.2380E-02 2.8268E-02 -3.6800E-03 -2.0000E-04 4.0500E-05
S9 -4.0290E-02 7.2861E-02 -1.2240E-01 1.4682E-01 -1.1783E-01 6.0813E-02 -1.9300E-02 3.4450E-03 -2.7000E-04
S10 -8.0740E-02 4.6066E-02 -5.9490E-02 6.1597E-02 -4.3540E-02 2.0599E-02 -6.3600E-03 1.1730E-03 -9.8000E-05
S11 -1.2777E-01 4.9183E-02 -7.3930E-02 7.1688E-02 -4.7640E-02 2.2307E-02 -7.1200E-03 1.3570E-03 -1.1000E-04
S12 -1.0297E-01 2.4036E-02 -3.2900E-02 2.9094E-02 -1.5170E-02 4.9770E-03 -1.1000E-03 1.5800E-04 -1.1000E-05
S13 -9.9000E-04 -2.3680E-02 2.8160E-03 -6.7000E-04 1.4600E-04 -4.1000E-04 3.5600E-04 -1.1000E-04 1.2400E-05
S14 5.6442E-02 -4.1690E-02 1.4346E-02 -2.4100E-03 4.5300E-05 4.7200E-05 -6.7000E-06 3.1500E-07 -2.1000E-09
S15 -8.1300E-02 4.5088E-02 -3.1300E-03 -2.7700E-03 9.2700E-04 -1.4000E-04 1.1200E-05 -4.8000E-07 8.7100E-09
S16 -4.6040E-02 1.7096E-02 -1.1500E-03 -1.2100E-03 4.4100E-04 -7.3000E-05 6.6700E-06 -3.2000E-07 6.3400E-09
表8
f1(mm) 7.92 f7(mm) 8.59
f2(mm) 11.70 f8(mm) -2.62
f3(mm) -7.61 f(mm) 3.69
f4(mm) 3.63 TTL(mm) 5.26
f5(mm) -19.82 ImgH(mm) 3.56
f6(mm) 300.00
表9
图6A示出了实施例3的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图6B示出了实施例3的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图6C示出了实施例3的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图6D示出了实施例3的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图6A至图6D可知，实施例3所给出的光学成像镜片组能够实现良好的成像品质。
实施例4
以下参照图7至图8D描述了根据本申请实施例4的光学成像镜片组。图7示出了根据本申请实施例4的光学成像镜片组的结构示意图。
如图7所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有正光焦度，其物侧面S3为凹面，像侧面S4为凸面；第三透镜E3具有负光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有正光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有正光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有正光焦度，其物侧面S13为凸面，像侧面S14为凸面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表10示出了实施例4的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表11示出了可用于实施例4中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表12给出实施例4中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1 至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000005
表10
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -7.9000E-03 1.5202E-02 -1.1805E-01 3.9140E-01 -7.1100E-01 7.6558E-01 -4.8959E-01 1.7287E-01 -2.6520E-02
S2 -1.8430E-02 -8.7320E-02 4.2489E-01 -1.2675E+00 2.3925E+00 -2.8429E+00 2.0536E+00 -8.2232E-01 1.3949E-01
S3 -6.4250E-02 -5.4760E-02 6.9670E-02 -1.9192E-01 6.0624E-01 -1.0446E+00 9.6521E-01 -4.6221E-01 9.0715E-02
S4 -5.1120E-02 -1.6536E-01 3.6761E-01 -4.2990E-01 2.5948E-01 -4.8680E-02 -2.6620E-02 1.1462E-02 -4.5000E-05
S5 -1.6191E-01 -1.1711E-01 2.6675E-01 -1.4030E-01 -2.9181E-01 5.7996E-01 -4.4658E-01 1.6689E-01 -2.5090E-02
S6 -1.3682E-01 -7.7110E-02 2.7348E-01 -3.8332E-01 3.1582E-01 -1.6299E-01 5.3108E-02 -1.0150E-02 8.7500E-04
S7 9.3840E-03 -4.0500E-03 -8.1800E-03 4.6246E-02 -6.5270E-02 3.3673E-02 -3.5100E-03 -2.1500E-03 4.9700E-04
S8 -7.3800E-03 4.5550E-02 -7.6270E-02 9.1042E-02 -6.1240E-02 2.1566E-02 -3.2700E-03 5.9600E-05 5.1400E-06
S9 -2.4820E-02 3.4675E-02 -7.0160E-02 9.6552E-02 -8.2080E-02 4.3187E-02 -1.3780E-02 2.4640E-03 -1.9000E-04
S10 -8.2760E-02 5.7509E-02 -7.2250E-02 7.1664E-02 -4.9270E-02 2.2681E-02 -6.7300E-03 1.1760E-03 -9.2000E-05
S11 -1.1168E-01 2.3105E-02 -4.6450E-02 6.1014E-02 -4.9070E-02 2.4695E-02 -7.7600E-03 1.3950E-03 -1.1000E-04
S12 -6.1260E-02 -4.6040E-02 5.0600E-02 -3.4040E-02 1.6290E-02 -5.6100E-03 1.2580E-03 -1.6000E-04 8.4300E-06
S13 -1.7180E-02 3.1800E-05 -3.4240E-02 4.3922E-02 -3.3990E-02 1.5858E-02 -4.3300E-03 6.2900E-04 -3.7000E-05
S14 3.0918E-02 -1.5900E-02 1.4640E-03 1.9160E-03 -1.0200E-03 2.4000E-04 -3.0000E-05 2.0000E-06 -5.4000E-08
S15 -6.5600E-02 2.5729E-02 8.6020E-03 -7.0200E-03 1.8950E-03 -2.8000E-04 2.3300E-05 -1.1000E-06 2.1000E-08
S16 -3.2240E-02 -1.9300E-03 9.0600E-03 -4.5000E-03 1.1250E-03 -1.6000E-04 1.4300E-05 -6.7000E-07 1.3100E-08
表11
f1(mm) 7.49 f7(mm) 12.05
f2(mm) 13.12 f8(mm) -2.94
f3(mm) -7.54 f(mm) 3.67
f4(mm) 4.10 TTL(mm) 5.28
f5(mm) 300.02 ImgH(mm) 3.56
f6(mm) 300.00
表12
图8A示出了实施例4的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图8B示出了实施例4的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图8C示出了实施例4的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图8D示出了实施例4的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图8A至图8D可知，实施例4所给出的光学成像镜片组能够实现良好的成像品质。
实施例5
以下参照图9至图10D描述了根据本申请实施例5的光学成像镜片组。图9示出了根据本申请实施例5的光学成像镜片组的结构示意图。
如图9所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有负光焦度，其物侧面S3为凸面，像侧面S4为凹面；第三透镜E3具有负光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有负光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有正光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有正光焦度，其物侧面S13为凸面，像侧面S14为凸面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表13示出了实施例5的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表14示出了可用于实施例5中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表15给出实施例5中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000006
Figure PCTCN2019084947-appb-000007
表13
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -6.1500E-03 1.8700E-02 -1.1871E-01 3.8810E-01 -7.0319E-01 7.5897E-01 -4.8662E-01 1.7199E-01 -2.6010E-02
S2 -2.1650E-02 -7.9840E-02 3.7454E-01 -1.0790E+00 1.9769E+00 -2.2893E+00 1.6198E+00 -6.3924E-01 1.0736E-01
S3 -3.7060E-02 -1.0720E-01 2.3142E-01 -3.5295E-01 5.4897E-01 -7.3799E-01 6.5740E-01 -3.2317E-01 6.5785E-02
S4 -5.8470E-02 -1.5489E-01 3.8843E-01 -4.4891E-01 2.6099E-01 -2.6140E-02 -5.4890E-02 2.8148E-02 -4.0500E-03
S5 -1.6648E-01 -1.5247E-01 2.9577E-01 -2.9480E-01 1.6670E-01 -6.1490E-02 2.8818E-02 -1.4900E-02 2.7030E-03
S6 -1.0968E-01 -1.1130E-01 2.4490E-01 -2.8117E-01 2.2376E-01 -1.3938E-01 6.6996E-02 -2.0390E-02 2.7380E-03
S7 1.2204E-02 -1.4760E-02 4.1287E-02 -7.6040E-02 8.5026E-02 -7.5010E-02 4.3623E-02 -1.3390E-02 1.6180E-03
S8 2.9140E-03 5.4034E-02 -9.3930E-02 1.1013E-01 -8.9800E-02 5.1377E-02 -2.0250E-02 4.9960E-03 -5.7000E-04
S9 -4.4570E-02 8.8816E-02 -1.3390E-01 1.3033E-01 -8.7850E-02 4.1110E-02 -1.2210E-02 1.9850E-03 -1.3000E-04
S10 -1.0827E-01 9.7561E-02 -9.6070E-02 5.5708E-02 -1.1060E-02 -6.9100E-03 5.5910E-03 -1.5800E-03 1.6600E-04
S11 -1.3522E-01 4.2885E-02 -5.9500E-02 6.8163E-02 -4.8600E-02 2.1487E-02 -6.0600E-03 1.0270E-03 -7.9000E-05
S12 -8.6480E-02 -2.0280E-02 2.1786E-02 -2.8400E-03 -4.2300E-03 2.1470E-03 -4.0000E-04 2.8500E-05 -3.3000E-07
S13 -1.0980E-02 1.4281E-02 -3.2310E-02 1.3037E-02 -7.6000E-04 -1.7400E-03 8.5900E-04 -1.8000E-04 1.4800E-05
S14 4.0983E-02 9.9540E-03 -2.9710E-02 1.6855E-02 -4.8600E-03 8.0200E-04 -7.6000E-05 3.8600E-06 -8.0000E-08
S15 -7.1940E-02 3.1624E-02 8.9240E-03 -7.5100E-03 1.9250E-03 -2.6000E-04 2.0100E-05 -8.4000E-07 1.4900E-08
S16 -4.9280E-02 1.1126E-02 3.2240E-03 -2.6100E-03 6.9900E-04 -1.0000E-04 8.7200E-06 -4.0000E-07 7.8800E-09
表14
f1(mm) 6.72 f7(mm) 9.11
f2(mm) -300.00 f8(mm) -2.69
f3(mm) -15.00 f(mm) 3.63
f4(mm) 3.22 TTL(mm) 5.20
f5(mm) -13.19 ImgH(mm) 3.56
f6(mm) 300.00
表15
图10A示出了实施例5的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图10B示出了实施例5的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图10C示出了实施例5的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图10D示出了实施例5的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组 后在成像面上的不同的像高的偏差。根据图10A至图10D可知，实施例5所给出的光学成像镜片组能够实现良好的成像品质。
实施例6
以下参照图11至图12D描述了根据本申请实施例6的光学成像镜片组。图11示出了根据本申请实施例6的光学成像镜片组的结构示意图。
如图11所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有负光焦度，其物侧面S3为凹面，像侧面S4为凹面；第三透镜E3具有正光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有负光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有正光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有正光焦度，其物侧面S13为凸面，像侧面S14为凸面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表16示出了实施例6的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表17示出了可用于实施例6中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表18给出实施例6中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000008
Figure PCTCN2019084947-appb-000009
表16
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -5.8900E-03 1.5593E-02 -1.1932E-01 3.8894E-01 -7.0272E-01 7.5850E-01 -4.8662E-01 1.7199E-01 -2.6010E-02
S2 -1.7920E-02 -4.4010E-02 1.0861E-01 -1.8863E-01 1.6997E-01 7.2760E-03 -1.5471E-01 1.2376E-01 -3.2390E-02
S3 2.9960E-03 -9.7370E-02 -3.1130E-02 6.4337E-01 -1.6586E+00 2.2574E+00 -1.7636E+00 7.4652E-01 -1.3308E-01
S4 -7.2760E-02 -1.5601E-01 3.8769E-01 -4.4955E-01 2.6036E-01 -2.6610E-02 -5.4890E-02 2.8148E-02 -4.0500E-03
S5 -1.5754E-01 -1.4190E-01 1.8378E-01 -1.2492E-01 9.5967E-02 -1.4771E-01 1.4122E-01 -5.9710E-02 8.4490E-03
S6 -7.4330E-02 -1.4207E-01 1.8412E-01 -1.2614E-01 7.9934E-02 -8.4430E-02 7.0405E-02 -2.8720E-02 4.3930E-03
S7 6.0740E-03 4.0950E-03 -2.2300E-03 -3.3380E-02 8.6581E-02 -1.0489E-01 6.4368E-02 -1.9240E-02 2.2290E-03
S8 2.8550E-03 5.6787E-02 -1.1366E-01 1.4187E-01 -1.1559E-01 6.5278E-02 -2.5600E-02 6.2370E-03 -6.9000E-04
S9 -2.1800E-02 5.5970E-03 2.7950E-02 -9.2140E-02 1.2362E-01 -8.9090E-02 3.6633E-02 -8.1100E-03 7.4700E-04
S10 -1.1287E-01 5.5925E-02 3.9091E-02 -1.5035E-01 1.7625E-01 -1.1202E-01 4.1235E-02 -8.2700E-03 6.9800E-04
S11 -1.7195E-01 6.3747E-02 -5.7850E-02 4.4086E-02 -2.3530E-02 8.4900E-03 -2.3800E-03 4.9900E-04 -5.0000E-05
S12 -8.9070E-02 -2.1670E-02 2.3051E-02 -2.2900E-03 -6.1300E-03 3.7090E-03 -1.0000E-03 1.3800E-04 -8.1000E-06
S13 -1.6310E-02 3.6785E-02 -6.0660E-02 4.4880E-02 -2.4060E-02 8.5180E-03 -1.7400E-03 1.7400E-04 -5.6000E-06
S14 3.6467E-02 1.1530E-03 -1.1360E-02 3.3290E-03 5.1900E-04 -4.5000E-04 9.2500E-05 -8.3000E-06 2.8300E-07
S15 -7.3210E-02 3.4501E-02 8.1490E-03 -7.5400E-03 1.9650E-03 -2.7000E-04 2.0800E-05 -8.7000E-07 1.5600E-08
S16 -6.5190E-02 2.7256E-02 -3.2300E-03 -1.3900E-03 6.0200E-04 -1.0000E-04 9.3300E-06 -4.4000E-07 8.4500E-09
表17
f1(mm) 7.07 f7(mm) 10.04
f2(mm) -45.10 f8(mm) -2.60
f3(mm) 300.06 f(mm) 3.66
f4(mm) 3.40 TTL(mm) 5.15
f5(mm) -12.40 ImgH(mm) 3.56
f6(mm) 300.00
表18
图12A示出了实施例6的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图12B示出了实施例6的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图12C示出了实施例6的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图12D示出了实施例6的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图12A至图12D可知，实施例6所给出的光学成像镜片组能够实现良好的成像品质。
实施例7
以下参照图13至图14D描述了根据本申请实施例7的光学成像镜片组。图13示出了根据本申请实施例7的光学成像镜片组的结构示意图。
如图13所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有负光 焦度，其物侧面S3为凹面，像侧面S4为凹面；第三透镜E3具有正光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有负光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有负光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有正光焦度，其物侧面S13为凸面，像侧面S14为凹面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表19示出了实施例7的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表20示出了可用于实施例7中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表21给出实施例7中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000010
表19
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -5.1700E-03 1.6806E-02 -1.2014E-01 3.8902E-01 -7.0248E-01 7.5836E-01 -4.8662E-01 1.7199E-01 -2.6010E-02
S2 -1.6690E-02 -3.3330E-02 7.0732E-02 -9.5420E-02 1.7350E-02 1.6496E-01 -2.4884E-01 1.5099E-01 -3.4490E-02
S3 7.7210E-03 -1.0850E-01 5.7480E-02 3.3009E-01 -1.0493E+00 1.5426E+00 -1.2545E+00 5.4228E-01 -9.7190E-02
S4 -7.7940E-02 -1.5561E-01 3.8736E-01 -4.4967E-01 2.6045E-01 -2.6470E-02 -5.4890E-02 2.8148E-02 -4.0500E-03
S5 -1.5063E-01 -1.6668E-01 2.7104E-01 -3.5313E-01 4.9043E-01 -5.8479E-01 4.3739E-01 -1.7079E-01 2.6097E-02
S6 -6.1930E-02 -1.5597E-01 2.0036E-01 -1.4328E-01 9.4304E-02 -9.4480E-02 7.5043E-02 -2.9760E-02 4.4660E-03
S7 1.1337E-02 -1.2100E-02 3.0482E-02 -8.2330E-02 1.4007E-01 -1.4252E-01 7.9861E-02 -2.2610E-02 2.5240E-03
S8 4.2120E-03 4.1547E-02 -7.5330E-02 8.4345E-02 -5.5160E-02 2.4583E-02 -9.0600E-03 2.5190E-03 -3.3000E-04
S9 -3.5420E-02 3.7337E-02 -3.4580E-02 5.8670E-03 2.9425E-02 -3.2780E-02 1.5785E-02 -3.7300E-03 3.5100E-04
S10 -1.2290E-01 1.0377E-01 -6.5240E-02 -2.0800E-03 4.2466E-02 -3.5450E-02 1.4226E-02 -2.9200E-03 2.4600E-04
S11 -1.5856E-01 6.0693E-02 -6.6630E-02 6.2605E-02 -3.9650E-02 1.6186E-02 -4.4500E-03 7.9400E-04 -6.7000E-05
S12 -9.7360E-02 -1.6750E-02 2.2066E-02 -2.4000E-03 -6.6800E-03 4.3550E-03 -1.2600E-03 1.8500E-04 -1.1000E-05
S13 -4.2200E-02 9.2334E-02 -1.2655E-01 1.0109E-01 -5.7180E-02 2.1484E-02 -4.9200E-03 6.1100E-04 -3.1000E-05
S14 -2.3500E-02 6.8214E-02 -5.7730E-02 2.4020E-02 -5.4500E-03 6.5400E-04 -3.4000E-05 -1.9000E-07 5.8100E-08
S15 -7.7350E-02 3.4473E-02 8.1560E-03 -7.5400E-03 1.9650E-03 -2.7000E-04 2.0800E-05 -8.7000E-07 1.5600E-08
S16 -5.0630E-02 9.4840E-03 4.8930E-03 -3.3800E-03 8.9400E-04 -1.3000E-04 1.0800E-05 -4.8000E-07 9.0200E-09
表20
f1(mm) 7.12 f7(mm) 18.98
f2(mm) -45.02 f8(mm) -3.12
f3(mm) 99.98 f(mm) 3.77
f4(mm) 3.44 TTL(mm) 5.35
f5(mm) -185.49 ImgH(mm) 3.56
f6(mm) -13.74
表21
图14A示出了实施例7的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图14B示出了实施例7的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图14C示出了实施例7的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图14D示出了实施例7的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图14A至图14D可知，实施例7所给出的光学成像镜片组能够实现良好的成像品质。
实施例8
以下参照图15至图16D描述了根据本申请实施例8的光学成像镜片组。图15示出了根据本申请实施例8的光学成像镜片组的结构示意图。
如图15所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有负光焦度，其物侧面S3为凹面，像侧面S4为凹面；第三透镜E3具有正光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有正光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有负光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有负光焦度，其物侧面S13为凹面，像侧面S14为凹面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表22示出了实施例8的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表23示出了可用于实施例8中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表24给出实施例8中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000011
表22
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -4.9500E-03 1.7564E-02 -1.2034E-01 3.8910E-01 -7.0237E-01 7.5837E-01 -4.8662E-01 1.7199E-01 -2.6010E-02
S2 -1.7820E-02 -2.9570E-02 7.2285E-02 -1.2620E-01 1.2557E-01 -3.1570E-02 -5.1200E-02 4.7656E-02 -1.2770E-02
S3 8.7530E-03 -1.0824E-01 9.3599E-02 1.3512E-01 -5.4678E-01 8.1023E-01 -6.3834E-01 2.6366E-01 -4.4980E-02
S4 -7.9690E-02 -1.5534E-01 3.8747E-01 -4.4954E-01 2.6063E-01 -2.6280E-02 -5.4890E-02 2.8148E-02 -4.0500E-03
S5 -1.5203E-01 -1.5977E-01 2.7912E-01 -4.1780E-01 6.2152E-01 -7.3017E-01 5.3282E-01 -2.0568E-01 3.1697E-02
S6 -6.1980E-02 -1.4732E-01 1.9383E-01 -1.5633E-01 1.2085E-01 -1.1265E-01 7.9491E-02 -2.9460E-02 4.2650E-03
S7 1.1398E-02 -1.5970E-02 4.9576E-02 -1.2036E-01 1.8100E-01 -1.6648E-01 8.6905E-02 -2.3400E-02 2.5190E-03
S8 3.4290E-03 4.0920E-02 -6.8790E-02 7.1239E-02 -4.1050E-02 1.5827E-02 -5.9700E-03 1.9540E-03 -2.9000E-04
S9 -3.4780E-02 4.5498E-02 -6.1070E-02 4.7815E-02 -9.8100E-03 -1.0260E-02 8.0120E-03 -2.2500E-03 2.3100E-04
S10 -1.2577E-01 1.1158E-01 -7.7110E-02 1.0670E-02 3.3964E-02 -3.2090E-02 1.3481E-02 -2.8500E-03 2.4400E-04
S11 -1.5049E-01 3.8022E-02 -2.7670E-02 2.0413E-02 -9.1600E-03 2.0780E-03 -5.2000E-04 1.9800E-04 -2.9000E-05
S12 -1.0323E-01 -1.3150E-02 2.2723E-02 -5.0200E-03 -4.5200E-03 3.4040E-03 -1.0200E-03 1.5300E-04 -9.4000E-06
S13 1.1542E-02 7.4440E-03 -2.7450E-02 1.5330E-02 -4.9500E-03 1.2120E-03 -2.3000E-04 2.4800E-05 -9.9000E-07
S14 -3.2000E-04 2.0133E-02 -2.4380E-02 1.3742E-02 -4.2600E-03 7.6100E-04 -7.8000E-05 4.3100E-06 -9.9000E-08
S15 -8.2290E-02 3.4416E-02 8.1660E-03 -7.5400E-03 1.9650E-03 -2.7000E-04 2.0800E-05 -8.7000E-07 1.5600E-08
S16 -5.3880E-02 1.5665E-02 -1.1200E-03 -5.5000E-04 1.7400E-04 -2.4000E-05 1.8300E-06 -7.3000E-08 1.1800E-09
表23
f1(mm) 7.07 f7(mm) -36.49
f2(mm) -43.53 f8(mm) -4.09
f3(mm) 99.99 f(mm) 3.92
f4(mm) 3.44 TTL(mm) 5.53
f5(mm) 26.41 ImgH(mm) 3.56
f6(mm) -8.80
表24
图16A示出了实施例8的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图16B示出了实施例8的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图16C示出了实施例8的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图16D示出了实施例8的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图16A至图16D可知，实施例8所给出的光学成像镜片组能够实现良好的成像品质。
实施例9
以下参照图17至图18D描述了根据本申请实施例9的光学成像镜片组。图17示出了根据本申请实施例9的光学成像镜片组的结构示意图。
如图17所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有正光焦度，其物侧面S3为凸面，像侧面S4为凸面；第三透镜E3具有负光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有正光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有负光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有负光焦度，其物侧面S13为凹面，像侧面S14为凹面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表25示出了实施例9的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表26示出了可用于实施例9中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表27给出实施例9中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000012
Figure PCTCN2019084947-appb-000013
表25
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -5.7700E-03 1.8525E-02 -1.2114E-01 3.8872E-01 -7.0243E-01 7.5839E-01 -4.8662E-01 1.7199E-01 -2.6010E-02
S2 -2.2110E-02 -1.6900E-02 6.3017E-02 -1.6789E-01 2.6751E-01 -2.2657E-01 8.2921E-02 4.6360E-03 -8.4000E-03
S3 -1.2590E-02 -6.2500E-02 -1.0750E-02 3.4692E-01 -8.8489E-01 1.2061E+00 -9.4637E-01 4.0377E-01 -7.2810E-02
S4 -7.5890E-02 -1.5520E-01 3.8692E-01 -4.4977E-01 2.6066E-01 -2.6140E-02 -5.4890E-02 2.8148E-02 -4.0500E-03
S5 -1.4528E-01 -2.0551E-01 4.2102E-01 -6.1442E-01 7.7477E-01 -8.0406E-01 5.6397E-01 -2.2218E-01 3.6627E-02
S6 -6.5170E-02 -1.7035E-01 2.8199E-01 -2.7565E-01 1.9291E-01 -1.1773E-01 6.0998E-02 -1.9740E-02 2.7010E-03
S7 1.7562E-02 -3.1360E-02 7.3184E-02 -1.4572E-01 1.9988E-01 -1.7755E-01 9.2209E-02 -2.5050E-02 2.7370E-03
S8 3.1430E-03 4.2048E-02 -6.8980E-02 7.1829E-02 -4.3910E-02 1.9258E-02 -7.8100E-03 2.4440E-03 -3.5000E-04
S9 -4.3670E-02 7.3558E-02 -1.0726E-01 1.0404E-01 -5.8970E-02 1.8155E-02 -2.1300E-03 -2.4000E-04 6.2100E-05
S10 -1.2577E-01 1.1972E-01 -1.0061E-01 4.5032E-02 5.5220E-03 -1.8400E-02 9.7220E-03 -2.3100E-03 2.1400E-04
S11 -1.3778E-01 1.9029E-02 -6.4100E-03 8.7470E-03 -6.4800E-03 2.3410E-03 -7.8000E-04 2.3800E-04 -3.0000E-05
S12 -1.1255E-01 -1.0710E-02 2.8068E-02 -1.2960E-02 8.5400E-04 1.3460E-03 -5.7000E-04 9.9800E-05 -6.8000E-06
S13 -8.9800E-03 2.5376E-02 -4.7880E-02 3.8066E-02 -2.1530E-02 8.0470E-03 -1.7500E-03 1.8800E-04 -6.9000E-06
S14 -2.5640E-02 3.2591E-02 -2.1080E-02 8.5130E-03 -2.1100E-03 2.9900E-04 -2.2000E-05 6.2200E-07 1.9600E-09
S15 -8.3630E-02 3.4588E-02 8.1930E-03 -7.5400E-03 1.9650E-03 -2.7000E-04 2.0800E-05 -8.7000E-07 1.5600E-08
S16 -4.4900E-02 1.1305E-02 -7.5000E-04 -2.1000E-04 3.8500E-05 3.7500E-07 -6.1000E-07 5.6100E-08 -1.7000E-09
表26
f1(mm) 7.49 f7(mm) -52.67
f2(mm) 48.25 f8(mm) -4.06
f3(mm) -30.72 f(mm) 3.98
f4(mm) 3.59 TTL(mm) 5.60
f5(mm) 24.42 ImgH(mm) 3.56
f6(mm) -8.71
表27
图18A示出了实施例9的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图18B示出了实施例9的光学成像镜片组的象散曲线，其表示子午像面弯 曲和弧矢像面弯曲。图18C示出了实施例9的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图18D示出了实施例9的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图18A至图18D可知，实施例9所给出的光学成像镜片组能够实现良好的成像品质。
实施例10
以下参照图19至图20D描述了根据本申请实施例10的光学成像镜片组。图19示出了根据本申请实施例10的光学成像镜片组的结构示意图。
如图19所示，根据本申请示例性实施方式的光学成像镜片组沿光轴由物侧至像侧依序包括：光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7、第八透镜E8、滤光片E9和成像面S19。
第一透镜E1具有正光焦度，其物侧面S1为凸面，像侧面S2为凹面；第二透镜E2具有负光焦度，其物侧面S3为凹面，像侧面S4为凸面；第三透镜E3具有负光焦度，其物侧面S5为凸面，像侧面S6为凹面；第四透镜E4具有正光焦度，其物侧面S7为凹面，像侧面S8为凸面；第五透镜E5具有正光焦度，其物侧面S9为凹面，像侧面S10为凸面；第六透镜E6具有负光焦度，其物侧面S11为凸面，像侧面S12为凹面；第七透镜E7具有负光焦度，其物侧面S13为凹面，像侧面S14为凹面；第八透镜E8具有负光焦度，其物侧面S15为凹面，像侧面S16为凹面。滤光片E9具有物侧面S17和像侧面S18。来自物体的光依序穿过各表面S1至S18并最终成像在成像面S19上。
表28示出了实施例10的光学成像镜片组的各透镜的表面类型、曲率半径、厚度、材料及圆锥系数，其中，曲率半径和厚度的单位均为毫米(mm)。表29示出了可用于实施例10中各非球面镜面的高次项系数，其中，各非球面面型可由上述实施例1中给出的公式(1)限定。表30给出实施例10中各透镜的有效焦距f1至f8、光学成像镜片组的总有效焦距f、第一透镜E1的物侧面S1至成像面S19在光轴上的距离TTL以及成像面S19上有效像素区域对角线长的一半ImgH。
Figure PCTCN2019084947-appb-000014
Figure PCTCN2019084947-appb-000015
表28
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -5.5100E-03 1.7713E-02 -1.2110E-01 3.8873E-01 -7.0248E-01 7.5835E-01 -4.8662E-01 1.7199E-01 -2.6010E-02
S2 -1.9880E-02 -2.2600E-02 9.1730E-02 -2.6511E-01 4.6069E-01 -4.5526E-01 2.4173E-01 -5.5120E-02 1.1270E-03
S3 -4.5400E-03 -9.0020E-02 8.5036E-02 1.1601E-01 -5.2343E-01 8.5097E-01 -7.3861E-01 3.3814E-01 -6.4230E-02
S4 -7.7920E-02 -1.5500E-01 3.8720E-01 -4.4976E-01 2.6051E-01 -2.6320E-02 -5.4890E-02 2.8148E-02 -4.0500E-03
S5 -1.4636E-01 -1.9628E-01 4.0772E-01 -6.8546E-01 1.0235E+00 -1.1699E+00 8.5216E-01 -3.4005E-01 5.6217E-02
S6 -6.1740E-02 -1.6483E-01 2.6337E-01 -2.7087E-01 2.2747E-01 -1.7250E-01 9.9018E-02 -3.2730E-02 4.4730E-03
S7 1.4159E-02 -1.5780E-02 3.5973E-02 -8.5990E-02 1.3420E-01 -1.2892E-01 6.9457E-02 -1.9090E-02 2.0820E-03
S8 2.8790E-03 3.9895E-02 -6.2210E-02 5.8793E-02 -2.7650E-02 7.1420E-03 -2.6600E-03 1.2790E-03 -2.4000E-04
S9 -3.6070E-02 4.5403E-02 -5.1690E-02 3.0393E-02 6.7790E-03 -1.9950E-02 1.1523E-02 -2.9800E-03 2.9800E-04
S10 -1.2501E-01 1.1217E-01 -7.8340E-02 1.2053E-02 3.3162E-02 -3.2000E-02 1.3581E-02 -2.8900E-03 2.4900E-04
S11 -1.4382E-01 3.0134E-02 -1.7480E-02 1.2321E-02 -4.3200E-03 -1.4000E-04 2.0100E-04 5.5200E-05 -1.7000E-05
S12 -1.0751E-01 -1.1360E-02 2.3124E-02 -5.7600E-03 -4.1100E-03 3.3000E-03 -1.0200E-03 1.5500E-04 -9.7000E-06
S13 1.4623E-02 5.2120E-03 -3.3370E-02 3.0338E-02 -1.8000E-02 7.0170E-03 -1.6500E-03 2.0600E-04 -1.1000E-05
S14 -1.9500E-03 7.9880E-03 -6.4300E-03 2.9900E-03 -7.9000E-04 1.0800E-04 -6.2000E-06 -8.2000E-10 9.4200E-09
S15 -8.3970E-02 3.4547E-02 8.1830E-03 -7.5400E-03 1.9650E-03 -2.7000E-04 2.0800E-05 -8.7000E-07 1.5600E-08
S16 -5.0500E-02 1.8666E-02 -4.9000E-03 1.1180E-03 -2.2000E-04 3.0500E-05 -2.7000E-06 1.2800E-07 -2.6000E-09
表29
f1(mm) 6.98 f7(mm) -36.91
f2(mm) -100.00 f8(mm) -4.13
f3(mm) -64.07 f(mm) 3.97
f4(mm) 3.45 TTL(mm) 5.65
f5(mm) 23.27 ImgH(mm) 3.56
f6(mm) -8.40
表30
图20A示出了实施例10的光学成像镜片组的轴上色差曲线，其表示不同波长的光线经由镜片组后的会聚焦点偏离。图20B示出了实施例10的光学成像镜片组的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图20C示出了实施例10的光学成像镜片组的畸变曲线，其表示不同像高处的畸变大小值。图20D示出了实施例10的光学成像镜片组的倍率色差曲线，其表示光线经由镜片组后在成像面上的不同的像高的偏差。根据图20A至图20D可知，实施例10所给出的光学成像镜片组能够实现良好的成像品质。
综上，实施例1至实施例10分别满足表31中所示的关系。
条件式/实施例 1 2 3 4 5 6 7 8 9 10
f1/f4 2.42 2.10 2.18 1.83 2.09 2.08 2.07 2.05 2.09 2.02
f8/f -0.77 -0.78 -0.71 -0.80 -0.74 -0.71 -0.83 -1.04 -1.02 -1.04
R5/R6 1.72 1.76 1.64 1.69 1.33 1.02 1.00 1.01 1.18 1.11
TTL/ImgH 1.55 1.53 1.48 1.48 1.46 1.45 1.50 1.55 1.57 1.59
|f/f2|+|f/f3| 0.95 0.88 0.80 0.77 0.25 0.09 0.12 0.13 0.21 0.10
|f/(f5+f6)| 0.04 0.02 0.01 0.01 0.01 0.01 0.02 0.22 0.25 0.27
R8/R7 0.27 0.26 0.23 0.23 0.10 0.17 0.18 0.18 0.22 0.18
R12/R11 0.87 0.81 0.97 0.97 0.97 0.97 0.75 0.62 0.62 0.61
f/EPD 1.65 1.70 1.58 1.56 1.53 1.67 1.73 1.75 1.78 1.82
T67/CT7 2.90 2.97 2.80 2.49 2.07 2.90 2.71 1.97 1.95 2.13
CT4/TTL*10 1.23 1.20 1.30 1.24 1.46 1.49 1.43 1.35 1.28 1.27
R1/R2 0.55 0.44 0.49 0.46 0.43 0.46 0.47 0.47 0.50 0.42
f/R16 1.05 1.03 1.18 0.98 1.07 1.17 1.03 0.92 0.87 0.86
ImgH/f 0.92 0.92 0.96 0.97 0.98 0.97 0.94 0.91 0.89 0.90
表31
本申请还提供一种成像装置，其电子感光元件可以是感光耦合元件(CCD)或互补性氧化金属半导体元件(CMOS)。成像装置可以是诸如数码相机的独立成像设备，也可以是集成在诸如手机等移动电子设备上的成像模块。该成像装置装配有以上描述的光学成像镜片组。
以上描述仅为本申请的较佳实施例以及对所运用技术原理的说明。本领域技术人员应当理解，本申请中所涉及的发明范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖在不脱离所述发明构思的情况下，由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。

Claims (28)

  1. 光学成像镜片组，沿着光轴由物侧至像侧依序包括：具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜和第八透镜，其特征在于，
    所述第一透镜和所述第四透镜均具有正光焦度；所述第八透镜具有负光焦度；所述第三透镜的物侧面为凸面，像侧面为凹面；所述第四透镜的物侧面为凹面，像侧面为凸面；以及
    所述光学成像镜片组的总有效焦距f、所述第二透镜的有效焦距f2与所述第三透镜的有效焦距f3满足|f/f2|+|f/f3|＜1。
  2. 根据权利要求1所述的光学成像镜片组，其特征在于，所述第一透镜的有效焦距f1与所述第四透镜的有效焦距f4满足1＜f1/f4＜2.5。
  3. 根据权利要求1所述的光学成像镜片组，其特征在于，所述光学成像镜片组的总有效焦距f、所述第五透镜的有效焦距f5与所述第六透镜的有效焦距f6满足|f/(f5+f6)|＜0.4。
  4. 根据权利要求1所述的光学成像镜片组，其特征在于，所述第八透镜的有效焦距f8与所述光学成像镜片组的总有效焦距f满足-1.5＜f8/f＜-0.5。
  5. 根据权利要求1所述的光学成像镜片组，其特征在于，所述第一透镜的物侧面的曲率半径R1与所述第一透镜的像侧面的曲率半径R2满足0.2＜R1/R2＜0.7。
  6. 根据权利要求1所述的光学成像镜片组，其特征在于，所述第三透镜的物侧面的曲率半径R5与所述第三透镜的像侧面的曲率半径R6满足1≤R5/R6≤1.8。
  7. 根据权利要求1所述的光学成像镜片组，其特征在于，所述第四透镜的像侧面的曲率半径R8与所述第四透镜的物侧面的曲率半径R7满足0＜R8/R7＜0.5。
  8. 根据权利要求1所述的光学成像镜片组，其特征在于，所述第六透镜的像侧面的曲率半径R12与所述第六透镜的物侧面的曲率半径R11满足0.5＜R12/R11＜1。
  9. 根据权利要求1所述的光学成像镜片组，其特征在于，所述光学成像镜片组的总有效焦距f与所述第八透镜像侧面的曲率半径R16满足0.5＜f/R16＜1.5。
  10. 根据权利要求1所述的光学成像镜片组，其特征在于，所述第六透镜和所述第七透镜在所述光轴上的间隔距离T67与所述第七透镜在所述光轴上的中心厚度CT7满足1.8＜T67/CT7＜3。
  11. 根据权利要求1所述的光学成像镜片组，其特征在于，所述第四透镜在所述光轴上的中心厚度CT4与所述第一透镜的物侧面至所述光学成像镜片组的成像面在所述光轴上的距离TTL满足1＜CT4/TTL*10＜1.5。
  12. 根据权利要求1至11中任一项所述的光学成像镜片组，其特征在于，所述第一透镜的物侧面至所述光学成像镜片组的成像面在所述光轴上的距离TTL与所述光学成像镜片组的成像面上有效像素区域对角线长的一半ImgH满足TTL/ImgH≤1.6。
  13. 根据权利要求12所述的光学成像镜片组，其特征在于，所述光学成像镜片组的成像面上有效像素区域对角线长的一半ImgH与所述光学成像镜片组的总有效焦距f满足ImgH/f＜1。
  14. 根据权利要求1至11中任一项所述的光学成像镜片组，其特征在于，所述光学成像镜片组的总有效焦距f与所述光学成像镜片组的入瞳直径EPD满足f/EPD＜1.9。
  15. 光学成像镜片组，沿着光轴由物侧至像侧依序包括：具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜和第八透镜，其特征在于，
    所述第一透镜和所述第四透镜均具有正光焦度；所述第八透镜具有负光焦度；所述第三透镜的物侧面为凸面，像侧面为凹面；所述第四透镜的物侧面为凹面，像侧面为凸面；以及
    所述第一透镜的有效焦距f1与所述第四透镜的有效焦距f4满足1＜f1/f4＜2.5。
  16. 根据权利要求15所述的光学成像镜片组，其特征在于，所述第一透镜的物侧面的曲率半径R1与所述第一透镜的像侧面的曲率半径R2满足0.2＜R1/R2＜0.7。
  17. 根据权利要求15所述的光学成像镜片组，其特征在于，所述第四透镜的像侧面的曲率半径R8与所述第四透镜的物侧面的曲率半径R7满足0＜R8/R7＜0.5。
  18. 根据权利要求15所述的光学成像镜片组，其特征在于，所述第六透镜和所述第七透镜在所述光轴上的间隔距离T67与所述第七透镜在所述光轴上的中心厚度CT7满足1.8＜T67/CT7＜3。
  19. 根据权利要求15所述的光学成像镜片组，其特征在于，所述第三透镜的物侧面的曲率半径R5与所述第三透镜的像侧面的曲率半径R6满足1≤R5/R6≤1.8。
  20. 根据权利要求19所述的光学成像镜片组，其特征在于，所述光学成像镜片组的总有效焦距f、所述第二透镜的有效焦距f2与所述第三透镜的有效焦距f3满足|f/f2|+|f/f3|＜1。
  21. 根据权利要求15所述的光学成像镜片组，其特征在于，所述光学成像镜片组的总有效焦距f与所述第八透镜像侧面的曲率半径R16满足0.5＜f/R16＜1.5。
  22. 根据权利要求21所述的光学成像镜片组，其特征在于，所述第八透镜的有效焦距f8与所述光学成像镜片组的总有效焦距f满足-1.5＜f8/f＜-0.5。
  23. 根据权利要求15所述的光学成像镜片组，其特征在于，所述第六透镜的像侧面的曲率半径R12与所述第六透镜的物侧面的曲率半径R11满足0.5＜R12/R11＜1。
  24. 根据权利要求23所述的光学成像镜片组，其特征在于，所述光学成像镜片组的总有效焦距f、所述第五透镜的有效焦距f5与所述第六透镜的有效焦距f6满足|f/(f5+f6)|＜0.4。
  25. 根据权利要求15所述的光学成像镜片组，其特征在于，所述光学成像镜片组的成像面上有效像素区域对角线长的一半ImgH与所述光学成像镜片组的总有效焦距f满足ImgH/f＜1。
  26. 根据权利要求25所述的光学成像镜片组，其特征在于，所述第一透镜的物侧面至所述光学成像镜片组的成像面在所述光轴上的距离TTL与所述光学成像镜片组的成像面上有效像素区域对角线长的一半ImgH满足TTL/ImgH≤1.6。
  27. 根据权利要求25所述的光学成像镜片组，其特征在于，所述光学成像镜片组的总有效焦距f与所述光学成像镜片组的入瞳直径EPD满足f/EPD＜1.9。
  28. 根据权利要求26所述的光学成像镜片组，其特征在于，所述第四透镜在所述光轴上的中心厚度CT4与所述第一透镜的物侧面至所述光学成像镜片组的成像面在所述光轴上的距离TTL满足1＜CT4/TTL*10＜1.5。
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