WO2019174364A1 - 光学成像系统 - Google Patents

光学成像系统 Download PDF

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Publication number
WO2019174364A1
WO2019174364A1 PCT/CN2018/125311 CN2018125311W WO2019174364A1 WO 2019174364 A1 WO2019174364 A1 WO 2019174364A1 CN 2018125311 W CN2018125311 W CN 2018125311W WO 2019174364 A1 WO2019174364 A1 WO 2019174364A1
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Prior art keywords
lens
imaging system
optical imaging
focal length
effective focal
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PCT/CN2018/125311
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English (en)
French (fr)
Inventor
高雪
李明
闻人建科
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浙江舜宇光学有限公司
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Publication of WO2019174364A1 publication Critical patent/WO2019174364A1/zh

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    • 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 -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only
    • 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

Definitions

  • the present application relates to an optical imaging system and, more particularly, to an optical imaging system comprising seven lenses.
  • lenses suitable for portable electronic products require high pixel, high resolution, high relative brightness, and also require a large field of view.
  • the present application provides an optical imaging system that can be adapted for use in a portable electronic product that can at least solve or partially address at least one of the above disadvantages of the prior art.
  • the present application provides an optical imaging system including, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. a sixth lens and a seventh lens.
  • the first lens may have a positive power
  • the object side may be a convex surface
  • the image side may be a concave surface
  • the second lens may have a positive power
  • the third lens may have a negative power
  • the object side may be a convex surface, like the side
  • the fourth lens, the fifth lens, and the sixth lens each have a power
  • the seventh lens has a power
  • the object side surface may be a convex surface
  • the image side surface may be a concave surface.
  • the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging system may satisfy 2 ⁇ f1/f ⁇ 5.
  • the effective focal length f2 of the second lens and the total effective focal length f of the optical imaging system may satisfy 1.5 ⁇ f2 / f ⁇ 2.5.
  • the effective focal length f3 of the third lens and the total effective focal length f of the optical imaging system may satisfy 2.1 ⁇
  • the total effective focal length f of the optical imaging system and the radius of curvature R14 of the image side of the seventh lens may satisfy 3.5 ⁇ f / R 14 ⁇ 5.
  • the total effective focal length f of the optical imaging system and the radius of curvature R5 of the object side of the third lens may satisfy 1 ⁇ f / R5 ⁇ 1.5.
  • the radius of curvature R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens may satisfy 0.5 ⁇ R1/R2 ⁇ 1.
  • the radius of curvature R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens may satisfy 1.0 ⁇ R5/R6 ⁇ 2.0.
  • the distance TTL of the center of the object side of the first lens to the imaging plane of the optical imaging system on the optical axis is half the length of the effective pixel area of the imaging surface of the optical imaging system, and the ImgH can satisfy the TTL/ ImgH ⁇ 1.7.
  • the total effective focal length f of the optical imaging system, the center of the object side of the first lens to the distance TTL of the imaging surface of the optical imaging system on the optical axis, and the effective pixel area diagonal of the imaging surface of the optical imaging system Half of the line length ImgH can satisfy 4.5mm ⁇ f*TTL/ImgH ⁇ 5.5mm.
  • the sum of the total effective focal length f of the optical imaging system and the center thickness of the first to seventh lenses on the optical axis, respectively, ⁇ CT may satisfy 0.5 ⁇ f/ ⁇ CT ⁇ 1.5.
  • the center thickness CT2 of the second lens on the optical axis and the separation distance T23 of the second lens and the third lens on the optical axis may satisfy 10 ⁇ CT2/T23 ⁇ 12.
  • the separation distance T67 of the sixth lens and the seventh lens on the optical axis, the center thickness CT6 of the sixth lens on the optical axis, and the center thickness CT7 of the seventh lens on the optical axis can satisfy 0 ⁇ T67. /(CT6+CT7) ⁇ 0.5.
  • the total effective focal length f of the optical imaging system and the entrance pupil diameter EPD of the optical imaging system may satisfy f/EPD < 1.8.
  • the present application provides an optical imaging system including, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, and a fifth a lens, a sixth lens, and a seventh lens.
  • the first lens may have a positive power
  • the object side may be a convex surface
  • the image side may be a concave surface
  • the second lens may have a positive power
  • the third lens may have a negative power
  • the object side may be a convex surface, like the side
  • the fourth lens, the fifth lens, and the sixth lens each have a power
  • the seventh lens has a power
  • the object side surface may be a convex surface
  • the image side surface may be a concave surface.
  • the center thickness CT2 of the second lens on the optical axis and the separation distance T23 of the second lens and the third lens on the optical axis may satisfy 10 ⁇ CT2/T23 ⁇ 12.
  • the present application further provides an optical imaging system including, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, and a first A five lens, a sixth lens, and a seventh lens.
  • the first lens may have a positive power
  • the object side may be a convex surface
  • the image side may be a concave surface
  • the second lens may have a positive power
  • the third lens may have a negative power
  • the object side may be a convex surface, like the side
  • the fourth lens, the fifth lens, and the sixth lens each have a power
  • the seventh lens has a power
  • the object side surface may be a convex surface
  • the image side surface may be a concave surface.
  • a plurality of (for example, seven) lenses are used, and the above optical imaging system is super-over by rationally distributing the power of each lens, the surface shape, the center thickness of each lens, and the on-axis spacing between the lenses.
  • At least one beneficial effect such as thinness, miniaturization, large field of view, high image quality, and the like.
  • FIG. 1 is a schematic structural view of an optical imaging system according to Embodiment 1 of the present application.
  • 2A to 2D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging system of Embodiment 1;
  • FIG. 3 is a schematic structural view of an optical imaging system according to Embodiment 2 of the present application.
  • 4A to 4D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging system of Embodiment 2;
  • FIG. 5 is a schematic structural view of an optical imaging system according to Embodiment 3 of the present application.
  • 6A to 6D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging system of Embodiment 3.
  • FIG. 7 is a schematic structural view of an optical imaging system according to Embodiment 4 of the present application.
  • 8A to 8D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging system of Embodiment 4;
  • FIG. 9 is a schematic structural view of an optical imaging system according to Embodiment 5 of the present application.
  • 10A to 10D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging system of Embodiment 5;
  • Figure 11 is a block diagram showing the structure of an optical imaging system according to Embodiment 6 of the present application.
  • 12A to 12D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging system of Embodiment 6;
  • Figure 13 is a block diagram showing the structure of an optical imaging system according to Embodiment 7 of the present application.
  • 14A to 14D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging system of Embodiment 7;
  • Figure 15 is a block diagram showing the structure of an optical imaging system according to Embodiment 8 of the present application.
  • 16A to 16D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging system of Embodiment 8.
  • first, second, third, etc. are used to distinguish one feature from another, and do not represent any limitation of the feature.
  • first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
  • the thickness, size, and shape of the lens have been somewhat exaggerated for convenience of explanation.
  • the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the spherical or aspherical shape shown in the drawings.
  • the drawings are only examples and are not to scale.
  • a paraxial region refers to a region near the optical axis. If the surface of the lens is convex and the position of the convex surface is not defined, it indicates that the surface of the lens is convex at least in the paraxial region; if the surface of the lens is concave and the position of the concave surface is not defined, it indicates that the surface of the lens is at least in the paraxial region. Concave.
  • the surface closest to the object in each lens is referred to as the object side, and the surface of each lens closest to the image plane is referred to as the image side.
  • An optical imaging system may include, for example, seven lenses having powers, that is, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a Seven lenses. These seven lenses are arranged in order from the object side to the image side along the optical axis.
  • the first lens may have a positive power
  • the object side may be a convex surface
  • the image side may be a concave surface
  • the second lens may have a positive power
  • the third lens may have a negative power
  • the object The side surface may be a convex surface
  • the image side may be a concave surface
  • the fourth lens has a positive power or a negative power
  • the fifth lens has a positive power or a negative power
  • the sixth lens has a positive power or a negative power
  • the seventh lens has a positive power or a negative power
  • the object side surface may be a convex surface
  • the image side surface may be a concave surface.
  • At least one of the object side and the image side of the second lens may be convex.
  • the object side of the second lens is convex.
  • the fourth lens may have a positive power
  • the object side may be a convex surface
  • the image side may be a concave surface
  • At least one of the object side and the image side of the fifth lens may be a concave surface.
  • the object side of the fifth lens is a concave surface.
  • At least one of the object side and the image side of the sixth lens may be convex.
  • the object side of the sixth lens is convex.
  • the optical imaging system of the present application may satisfy the conditional HFOV ⁇ 45.0°, where HFOV is half the maximum field of view of the optical imaging system. More specifically, HFOV can further satisfy 45.0 ° ⁇ HFOV ⁇ 45.2 °. With a large field of view, it can effectively increase the shooting range of the optical imaging system and ensure the wide-angle characteristics of the optical imaging system.
  • the optical imaging system of the present application may satisfy Condition 2 ⁇ f1/f ⁇ 5, where f1 is the effective focal length of the first lens and f is the total effective focal length of the optical imaging system. More specifically, f1 and f can further satisfy 2.5 ⁇ f1/f ⁇ 4.5, for example, 3.01 ⁇ f1/f ⁇ 4.10.
  • Reasonably distributing the total effective focal length of the optical imaging system and the effective focal length of the first lens can effectively control the light deflection and reduce the sensitivity; at the same time, the spherical aberration and astigmatism of the system can be reduced, thereby effectively improving the optical imaging system. Imaging quality.
  • the optical imaging system of the present application may satisfy conditional formula ⁇ ⁇ F2 / f ⁇ 2.5, where f2 is the effective focal length of the second lens and f is the total effective focal length of the optical imaging system. More specifically, f2 and f can further satisfy 1.7 ⁇ f2 / f ⁇ 2.1, for example, 1.73 ⁇ f2 / f ⁇ 2.01. Reasonably distributing the total effective focal length of the entire optical imaging system and the effective focal length of the second lens can effectively balance the spherical aberration, coma, astigmatism and distortion of the system, and improve the imaging quality of the optical imaging system.
  • the optical imaging system of the present application may satisfy conditional formula 2.1 ⁇
  • Reasonably distributing the total effective focal length of the entire optical imaging system and the effective focal length of the third lens can effectively balance the field curvature, axial chromatic aberration, astigmatism and distortion of the system, and improve the resolution of the imaging system.
  • the optical imaging system of the present application may satisfy the conditional expression 3.5 ⁇ f/R14 ⁇ 5, where f is the total effective focal length of the optical imaging system and R14 is the radius of curvature of the image side of the seventh lens. More specifically, f and R14 may further satisfy 3.7 ⁇ f / R14 ⁇ 4.8, for example, 3.73 ⁇ f / R14 ⁇ 4.76.
  • Reasonable control of the total effective focal length of the optical imaging system and the radius of curvature of the side of the seventh lens image can reduce the astigmatism and distortion of the optical imaging system and improve the imaging quality of the optical imaging system.
  • the optical imaging system of the present application may satisfy Conditional Formula ⁇ /R5 ⁇ 1.5, where f is the total effective focal length of the optical imaging system and R5 is the radius of curvature of the object side of the third lens. More specifically, f and R5 may further satisfy 1.1 ⁇ f / R 5 ⁇ 1.4, for example, 1.17 ⁇ f / R5 ⁇ 1.32.
  • Reasonable control of the total effective focal length of the optical imaging system and the radius of curvature of the side of the third lens image can reduce the astigmatism and distortion of the optical imaging system and improve the imaging quality of the optical imaging system.
  • the optical imaging system of the present application may satisfy the conditional expression 0.5 ⁇ R1/R2 ⁇ 1, where R1 is the radius of curvature of the object side of the first lens, and R2 is the radius of curvature of the image side of the first lens. . More specifically, R1 and R2 may further satisfy 0.6 ⁇ R1/R2 ⁇ 0.8, for example, 0.69 ⁇ R1/R2 ⁇ 0.79.
  • Reasonable control of the radius of curvature of the side surface of the first lens and the radius of curvature of the side of the first lens image can reduce the deflection ability of the light, can effectively improve the contrast of the optical imaging system, and reduce the sensitivity of the system.
  • the optical imaging system of the present application can satisfy the conditional TTL / ImgH ⁇ 1.7, where TTL is the distance from the center of the object side of the first lens to the imaging plane of the optical imaging system on the optical axis, ImgH It is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging system. More specifically, TTL and ImgH can further satisfy TTL/ImgH ⁇ 1.5, for example, 1.45 ⁇ TTL / ImgH ⁇ 1.49. The conditional TTL/ImgH ⁇ 1.7 is satisfied, which can effectively compress the size of the optical imaging system and ensure the compact size characteristics of the imaging system.
  • the optical imaging system of the present application may satisfy Conditional Formula ⁇ CT2/T23 ⁇ 12, where CT2 is the center thickness of the second lens on the optical axis, and T23 is the second lens and the third lens.
  • CT2 and T23 can further satisfy 10 ⁇ CT2/T23 ⁇ 11.1, for example, 10.14 ⁇ CT2/T23 ⁇ 11.00.
  • the optical imaging system of the present application may satisfy the conditional expression 0.5 ⁇ f/ ⁇ CT ⁇ 1.5, where f is the total effective focal length of the optical imaging system, and ⁇ CT is the first to seventh lenses respectively The sum of the center thicknesses on the optical axis. More specifically, f and ⁇ CT may further satisfy 1.20 ⁇ f / ⁇ CT ⁇ 1.35, for example, 1.25 ⁇ f / ⁇ CT ⁇ 1.30. Satisfying the conditional formula 0.5 ⁇ f/ ⁇ CT ⁇ 1.5 is beneficial to ensure lens miniaturization. By reasonably distributing the center thickness of each lens, the deflection of the light tends to be moderated, and the sensitivity of the system is reduced. At the same time, the astigmatism, distortion and chromatic aberration of the optical imaging system are reduced, and the resolution is improved.
  • the optical imaging system of the present application may satisfy the conditional expression 1.0 ⁇ R5/R6 ⁇ 2.0, where R5 is the radius of curvature of the object side of the third lens, and R6 is the radius of curvature of the image side of the third lens. . More specifically, R5 and R6 may further satisfy 1.4 ⁇ R5 / R6 ⁇ 1.6, for example, 1.47 ⁇ R5 / R6 ⁇ 1.55. The radius of curvature of the side of the third lens and the side of the image are reasonably distributed so that the optical imaging system can better match the chief ray angle of the chip.
  • the optical imaging system of the present application may satisfy the conditional expression 0 ⁇ T67/(CT6+CT7) ⁇ 0.5, where T67 is the separation distance of the sixth lens and the seventh lens on the optical axis, and CT6 is The center thickness of the sixth lens on the optical axis, and CT7 is the center thickness of the seventh lens on the optical axis. More specifically, T67, CT6, and CT7 may further satisfy 0 ⁇ T67 / (CT6 + CT7) ⁇ 0.2, for example, 0.10 ⁇ T67 / (CT6 + CT7) ⁇ 0.17. Reasonably distributing the center thickness of the sixth lens and the seventh lens and the air gap between the sixth lens and the seventh lens can improve astigmatism and distortion of the optical imaging system, improve imaging quality, and reduce the optical imaging system Segment size.
  • the optical imaging system of the present application may satisfy the conditional formula 4.5 mm ⁇ f * TTL / ImgH ⁇ 5.5 mm, where f is the total effective focal length of the optical imaging system and TTL is the side of the object of the first lens
  • the distance from the center to the imaging plane of the optical imaging system on the optical axis, ImgH is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging system.
  • f, TTL, and ImgH can further satisfy 4.9 mm ⁇ f * TTL / ImgH ⁇ 5.4 mm, for example, 4.99 mm ⁇ f * TTL / ImgH ⁇ 5.34 mm.
  • Reasonably controlling the ratio of the product of the total effective focal length of the optical imaging system to the optical total length of the optical imaging system to the maximum image height of the optical imaging system can effectively ensure the ultra-thinness and wide-angle of the optical imaging system.
  • the optical imaging system can also include at least one aperture to enhance the imaging quality of the imaging system.
  • the diaphragm may be disposed between the object side and the first lens.
  • the optical imaging system described above may further include a filter for correcting color deviation and/or a cover glass for protecting the photosensitive element on the imaging surface.
  • An optical imaging system in accordance with the above-described embodiments of the present application can employ multiple lenses, such as the seven described above.
  • the system volume can be effectively reduced, the sensitivity of the system can be reduced, and the processability of the system can be improved.
  • the optical imaging system is made more advantageous for production processing and can be applied to portable electronic products.
  • the optical imaging system configured as described above can also have advantageous effects such as ultra-thin, large angle of view, low sensitivity, high image quality, and the like.
  • At least one of the mirror faces of each lens is an aspherical mirror.
  • the aspherical lens is characterized by a continuous change in curvature from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, the aspherical lens has better curvature radius characteristics, and has the advantages of improving distortion and improving astigmatic aberration. With an aspherical lens, the aberrations that occur during imaging can be eliminated as much as possible, improving image quality.
  • optical imaging system is not limited to including seven lenses.
  • the optical imaging system can also include other numbers of lenses if desired.
  • FIG. 1 is a block diagram showing the structure of an optical imaging system according to Embodiment 1 of the present application.
  • an optical imaging system sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side.
  • the first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens E2 has a positive refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has a positive refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a convex surface.
  • the sixth lens E6 has a positive refractive power
  • the object side surface S11 is a convex surface
  • the image side surface S12 is a convex surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging plane S17.
  • Table 1 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging system of Example 1, in which the unit of curvature radius and thickness are both millimeters (mm).
  • each aspherical lens can be defined by using, but not limited to, the following aspherical formula:
  • x is the distance of the aspherical surface at height h from the optical axis, and the distance from the aspherical vertex is high;
  • k is the conic coefficient (given in Table 1);
  • Ai is the correction coefficient of the a-th order of the aspherical surface.
  • Table 2 gives the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 which can be used for each aspherical mirror surface S1-S14 in the embodiment 1. .
  • Table 3 gives the effective focal lengths f1 to f7 of the lenses in Embodiment 1, the total effective focal length f of the optical imaging system, and the optical total length TTL (i.e., from the center of the object side S1 of the first lens E1 to the imaging plane S17 in the light The distance on the axis) and the half of the diagonal length of the effective pixel area on the imaging surface S17, ImgH.
  • HFOV 45.2°, where HFOV is half the maximum field of view of the optical imaging system
  • F1/f 3.17, where f1 is the effective focal length of the first lens E1, and f is the total effective focal length of the optical imaging system;
  • F2/f 2.01, where f2 is the effective focal length of the second lens E2, and f is the total effective focal length of the optical imaging system;
  • f/R14 4.44, where f is the total effective focal length of the optical imaging system, and R14 is the radius of curvature of the image side S14 of the seventh lens E7;
  • f/R5 1.17, where f is the total effective focal length of the optical imaging system, and R5 is the radius of curvature of the object side S5 of the third lens E3;
  • R1/R2 0.69, where R1 is the radius of curvature of the object side surface S1 of the first lens E1, and R2 is the radius of curvature of the image side surface S2 of the first lens E1;
  • TTL/ImgH 1.49, where TTL is the distance from the center of the object side surface S1 of the first lens E1 to the imaging plane S17 on the optical axis, and ImgH is half the diagonal length of the effective pixel area on the imaging surface S17;
  • CT2/T23 10.37, where CT2 is the center thickness of the second lens E2 on the optical axis, and T23 is the separation distance of the second lens E2 and the third lens E3 on the optical axis;
  • f / ⁇ CT 1.25, where f is the total effective focal length of the optical imaging system, and ⁇ CT is the sum of the central thicknesses of the first lens E1 to the seventh lens E7 on the optical axis, respectively;
  • R5/R6 1.55, where R5 is the radius of curvature of the object side surface S5 of the third lens E3, and R6 is the radius of curvature of the image side surface S6 of the third lens E3;
  • T67 / (CT6 + CT7) 0.11, wherein T67 is the separation distance of the sixth lens E6 and the seventh lens E7 on the optical axis, CT6 is the center thickness of the sixth lens E6 on the optical axis, and CT7 is the seventh lens The center thickness of E7 on the optical axis;
  • f/EPD 1.55, where f is the total effective focal length of the optical imaging system and EPD is the entrance pupil diameter of the optical imaging system;
  • f*TTL/ImgH 5.17mm, where f is the total effective focal length of the optical imaging system, TTL is the distance from the center of the object side S1 of the first lens E1 to the imaging plane S17 on the optical axis, and ImgH is on the imaging plane S17
  • the effective pixel area is half the length of the diagonal.
  • 2A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 1, which indicates that light of different wavelengths is deviated from a focus point after the system.
  • 2B shows an astigmatism curve of the optical imaging system of Embodiment 1, which shows meridional field curvature and sagittal image plane curvature.
  • 2C shows a distortion curve of the optical imaging system of Embodiment 1, which represents distortion magnitude values in the case of different viewing angles.
  • 2D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 1, which indicates the deviation of different image heights on the imaging plane after the light passes through the system.
  • the optical imaging system given in Embodiment 1 can achieve good imaging quality.
  • FIG. 3 is a block diagram showing the structure of an optical imaging system according to Embodiment 2 of the present application.
  • an optical imaging system sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side.
  • the first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens E2 has a positive refractive power, and the object side surface S3 is a convex surface, and the image side surface S4 is a convex surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has a negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a convex surface.
  • the sixth lens E6 has a positive refractive power
  • the object side surface S11 is a convex surface
  • the image side surface S12 is a convex surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging plane S17.
  • Table 4 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging system of Example 2, in which the unit of curvature radius and thickness are both millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical.
  • Table 5 shows the high order coefficient which can be used for each aspherical mirror in Embodiment 2, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 6 gives the effective focal lengths f1 to f7 of the lenses in Embodiment 2, the total effective focal length f of the optical imaging system, the optical total length TTL, and the half ImgH of the effective pixel area diagonal length on the imaging surface S17.
  • 4A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 2, which indicates that light of different wavelengths is deviated from a focus point after the system.
  • 4B shows an astigmatism curve of the optical imaging system of Embodiment 2, which shows meridional field curvature and sagittal image plane curvature.
  • 4C shows a distortion curve of the optical imaging system of Embodiment 2, which represents the distortion magnitude value in the case of different viewing angles.
  • 4D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 2, which shows the deviation of different image heights on the imaging plane after the light passes through the system.
  • the optical imaging system given in Embodiment 2 can achieve good imaging quality.
  • FIG. 5 is a block diagram showing the structure of an optical imaging system according to Embodiment 3 of the present application.
  • an optical imaging system sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side.
  • the first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens E2 has a positive refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has a positive refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a convex surface.
  • the sixth lens E6 has a positive refractive power
  • the object side surface S11 is a convex surface
  • the image side surface S12 is a concave surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging plane S17.
  • Table 7 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging system of Example 3, wherein the units of the radius of curvature and the thickness are all in millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical.
  • Table 8 shows the high order term coefficients which can be used for the respective aspherical mirrors in Embodiment 3, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 9 gives the effective focal lengths f1 to f7 of the lenses in Embodiment 3, the total effective focal length f of the optical imaging system, the optical total length TTL, and the half ImgH of the effective pixel area diagonal length on the imaging surface S17.
  • Fig. 6A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 3, which shows that light of different wavelengths is deviated from the focus point after the system.
  • Fig. 6B shows an astigmatism curve of the optical imaging system of Embodiment 3, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 6C shows a distortion curve of the optical imaging system of Embodiment 3, which shows distortion magnitude values in the case of different viewing angles.
  • Fig. 6D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 3, which shows the deviation of the different image heights on the imaging plane after the light passes through the system. 6A to 6D, the optical imaging system given in Embodiment 3 can achieve good imaging quality.
  • FIG. 7 is a block diagram showing the structure of an optical imaging system according to Embodiment 4 of the present application.
  • an optical imaging system sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side.
  • the first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens E2 has a positive refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has a negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a convex surface.
  • the sixth lens E6 has a positive refractive power
  • the object side surface S11 is a convex surface
  • the image side surface S12 is a convex surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging plane S17.
  • Table 10 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging system of Example 4, in which the unit of curvature radius and thickness are both millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical.
  • Table 11 shows the high order coefficient which can be used for each aspherical mirror in Embodiment 4, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 12 gives the effective focal lengths f1 to f7 of the lenses in Embodiment 4, the total effective focal length f of the optical imaging system, the optical total length TTL, and a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17.
  • Figure 8A shows an axial chromatic aberration curve for the optical imaging system of Example 4, which shows that light of different wavelengths deviates from the focus point after the system.
  • Fig. 8B shows an astigmatism curve of the optical imaging system of Embodiment 4, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 8C shows a distortion curve of the optical imaging system of Embodiment 4, which shows distortion magnitude values in the case of different viewing angles.
  • Fig. 8D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 4, which shows the deviation of different image heights on the imaging plane after the light passes through the system. 8A to 8D, the optical imaging system given in Embodiment 4 can achieve good imaging quality.
  • FIG. 9 is a block diagram showing the structure of an optical imaging system according to Embodiment 5 of the present application.
  • an optical imaging system sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side.
  • the first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens E2 has a positive refractive power, and the object side surface S3 is a convex surface, and the image side surface S4 is a convex surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has a negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a convex surface.
  • the sixth lens E6 has a positive refractive power
  • the object side surface S11 is a convex surface
  • the image side surface S12 is a concave surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging plane S17.
  • Table 13 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging system of Example 5, in which the unit of curvature radius and thickness are both millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical.
  • Table 14 shows the high order coefficient which can be used for each aspherical mirror surface in Embodiment 5, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 15 gives the effective focal lengths f1 to f7 of the lenses in Embodiment 5, the total effective focal length f of the optical imaging system, the optical total length TTL, and a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17.
  • Fig. 10A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 5, which shows that light of different wavelengths is deviated from the focus point after the system.
  • Fig. 10B shows an astigmatism curve of the optical imaging system of Embodiment 5, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 10C shows a distortion curve of the optical imaging system of Embodiment 5, which shows distortion magnitude values in the case of different viewing angles.
  • Fig. 10D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 5, which shows the deviation of different image heights on the imaging plane after the light passes through the system. 10A to 10D, the optical imaging system given in Embodiment 5 can achieve good imaging quality.
  • FIGS. 11 through 12D An optical imaging system according to Embodiment 6 of the present application is described below with reference to FIGS. 11 through 12D.
  • Figure 11 is a block diagram showing the structure of an optical imaging system according to Embodiment 6 of the present application.
  • an optical imaging system sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side.
  • the first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens E2 has a positive refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has a positive refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a convex surface.
  • the sixth lens E6 has a negative refractive power
  • the object side surface S11 is a convex surface
  • the image side surface S12 is a concave surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging plane S17.
  • Table 16 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging system of Example 6, wherein the unit of curvature radius and thickness are both millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical.
  • Table 17 shows the high order coefficient which can be used for each aspherical mirror surface in Embodiment 6, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 18 gives the effective focal lengths f1 to f7 of the lenses in Embodiment 6, the total effective focal length f of the optical imaging system, the optical total length TTL, and the half ImgH of the effective pixel area diagonal length on the imaging surface S17.
  • Fig. 12A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 6, which indicates that light of different wavelengths is deviated from the focus point after the system.
  • Fig. 12B shows an astigmatism curve of the optical imaging system of Embodiment 6, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 12C shows a distortion curve of the optical imaging system of Embodiment 6, which shows the distortion magnitude value in the case of different viewing angles.
  • Fig. 12D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 6, which shows the deviation of different image heights on the imaging plane after the light passes through the system. 12A to 12D, the optical imaging system given in Embodiment 6 can achieve good imaging quality.
  • FIG. 13 is a block diagram showing the structure of an optical imaging system according to Embodiment 7 of the present application.
  • an optical imaging system sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side.
  • the first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens E2 has a positive refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has a negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a concave surface.
  • the sixth lens E6 has a positive refractive power
  • the object side surface S11 is a convex surface
  • the image side surface S12 is a convex surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the image plane S17.
  • Table 19 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging system of Example 7, in which the unit of curvature radius and thickness are both millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical.
  • Table 20 shows the high order term coefficients which can be used for the respective aspherical mirrors in Embodiment 7, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 21 gives the effective focal lengths f1 to f7 of the lenses in Embodiment 7, the total effective focal length f of the optical imaging system, the optical total length TTL, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17.
  • FIG. 14A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 7, which indicates that light of different wavelengths is deviated from a focus point after the system.
  • Fig. 14B shows an astigmatism curve of the optical imaging system of Embodiment 7, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 14C shows a distortion curve of the optical imaging system of Embodiment 7, which shows the distortion magnitude value in the case of different viewing angles.
  • Fig. 14D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 7, which shows the deviation of the different image heights on the imaging plane after the light passes through the system. 14A to 14D, the optical imaging system given in Embodiment 7 can achieve good imaging quality.
  • FIG. 15 is a view showing the configuration of an optical imaging system according to Embodiment 8 of the present application.
  • an optical imaging system sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side.
  • the first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens E2 has a positive refractive power, and the object side surface S3 is a convex surface, and the image side surface S4 is a convex surface.
  • the third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface.
  • the fifth lens E5 has a negative refractive power
  • the object side surface S9 is a concave surface
  • the image side surface S10 is a convex surface.
  • the sixth lens E6 has a positive refractive power
  • the object side surface S11 is a convex surface
  • the image side surface S12 is a convex surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging plane S17.
  • Table 22 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging system of Example 8, in which the unit of curvature radius and thickness are both millimeters (mm).
  • the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical.
  • Table 23 shows the high order term coefficients which can be used for the respective aspherical mirrors in Embodiment 8, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.
  • Table 24 gives the effective focal lengths f1 to f7 of the lenses in Embodiment 8, the total effective focal length f of the optical imaging system, the optical total length TTL, and the half ImgH of the effective pixel area diagonal length on the imaging surface S17.
  • Fig. 16A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 8, which indicates that light of different wavelengths is deviated from the focus point after the system.
  • Fig. 16B shows an astigmatism curve of the optical imaging system of Embodiment 8, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 16C shows a distortion curve of the optical imaging system of Embodiment 8, which shows distortion magnitude values in the case of different viewing angles.
  • Fig. 16D shows a magnification chromatic aberration curve of the optical imaging system of Example 8, which shows the deviation of the different image heights on the imaging plane after the light passes through the system. According to Figs. 16A to 16D, the optical imaging system given in Embodiment 8 can achieve good image quality.
  • Embodiments 1 to 8 respectively satisfy the relationship shown in Table 25.
  • the present application also provides an image forming apparatus whose electronic photosensitive element may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).
  • the imaging device may be a stand-alone 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 system described above.

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Abstract

一种光学成像系统，沿着光轴由物侧至像侧依序包括：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）和第七透镜（E7）。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；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）、第五透镜（E5）、第六透镜（E6）均具有光焦度；第七透镜（E7）具有光焦度，其物侧面（S13）为凸面，像侧面（S14）为凹面。光学成像系统的最大视场角的一半HFOV满足HFOV≥45.0°。

Description

光学成像系统
相关申请的交叉引用
本申请要求于2018年03月13日提交于中国国家知识产权局(CNIPA)的、专利申请号为201810204941.5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系统，更具体地，本申请涉及一种包括七片透镜的光学成像系统。
背景技术
随着例如智能手机等便携式电子产品的多样化发展，消费者对便携式电子产品附带的拍照功能的要求越来越高。为了满足市场的需求，适用于便携式电子产品的镜头除了需要具备高像素、高分辨率、高相对亮度等特性，还要求具有较大的视场角度。
因此，需要一种具有超薄、大视场角、优良成像品质和低敏感性等特性的、可适用于便携式电子产品的光学成像系统。
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系统。
一方面，本申请提供了一种光学成像系统，该光学成像系统沿着光轴由物侧至像侧依序包括：第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜。第一透镜可具有正光焦度，其物侧面可为凸面，像侧面可为凹面；第二透镜可具有正光焦度；第三透镜可具有负光焦度，其物侧面可为凸面，像侧面可为凹面；第四透镜、第五透镜、第六透镜均具有光焦度；第七透镜具有光焦度，其物侧面可为凸面，像侧面可为凹面。其中，光学成像系统的最大视场角的一半HFOV满足HFOV≥45.0°。
在一个实施方式中，第一透镜的有效焦距f1与光学成像系统的总有效焦距f可满足2＜f1/f＜5。
在一个实施方式中，第二透镜的有效焦距f2与光学成像系统的总有效焦距f可满足1.5＜f2/f＜2.5。
在一个实施方式中，第三透镜的有效焦距f3与光学成像系统的总有效焦距f可满足2.1＜|f3/f|＜3。
在一个实施方式中，光学成像系统的总有效焦距f与第七透镜的像侧面的曲率半径R14可满足3.5＜f/R14＜5。
在一个实施方式中，光学成像系统的总有效焦距f与第三透镜的物侧面的曲率半径R5可满足1＜f/R5＜1.5。
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0.5＜R1/R2＜1。
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1.0＜R5/R6＜2.0。
在一个实施方式中，第一透镜的物侧面的中心至光学成像系统的成像面在光轴上的距离TTL与光学成像系统的成像面上有效像素区域对角线长的一半ImgH可满足TTL/ImgH＜1.7。
在一个实施方式中，光学成像系统的总有效焦距f、第一透镜的物侧面的中心至光学成像系统的成像面在光轴上的距离TTL以及光学成像系统的成像面上有效像素区域对角线长的一半ImgH可满足4.5mm＜f*TTL/ImgH＜5.5mm。
在一个实施方式中，光学成像系统的总有效焦距f与第一透镜至第七透镜分别于光轴上的中心厚度之和∑CT可满足0.5＜f/∑CT＜1.5。
在一个实施方式中，第二透镜于光轴上的中心厚度CT2与第二透镜和第三透镜在光轴上的间隔距离T23可满足10＜CT2/T23＜12。
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、第六透镜于光轴上的中心厚度CT6以及第七透镜于光轴上的中心厚度CT7可满足0＜T67/(CT6+CT7)＜0.5。
在一个实施方式中，光学成像系统的总有效焦距f与光学成像系 统的入瞳直径EPD可满足f/EPD＜1.8。
另一方面，本申请提供了一种光学成像系统，该光学成像系统沿着光轴由物侧至像侧依序包括：第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜。第一透镜可具有正光焦度，其物侧面可为凸面，像侧面可为凹面；第二透镜可具有正光焦度；第三透镜可具有负光焦度，其物侧面可为凸面，像侧面可为凹面；第四透镜、第五透镜、第六透镜均具有光焦度；第七透镜具有光焦度，其物侧面可为凸面，像侧面可为凹面。其中，第二透镜于光轴上的中心厚度CT2与第二透镜和第三透镜在光轴上的间隔距离T23可满足10＜CT2/T23＜12。
又一方面，本申请还提供了一种光学成像系统，该光学成像系统沿着光轴由物侧至像侧依序包括：第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜。第一透镜可具有正光焦度，其物侧面可为凸面，像侧面可为凹面；第二透镜可具有正光焦度；第三透镜可具有负光焦度，其物侧面可为凸面，像侧面可为凹面；第四透镜、第五透镜、第六透镜均具有光焦度；第七透镜具有光焦度，其物侧面可为凸面，像侧面可为凹面。其中，光学成像系统的总有效焦距f与第三透镜的物侧面的曲率半径R5可满足1＜f/R5＜1.5。
本申请采用了多片(例如，七片)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，使得上述光学成像系统具有超薄、小型化、大视场角、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的光学成像系统的结构示意图；
图2A至图2D分别示出了实施例1的光学成像系统的轴上色差曲线、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的光学成像系统的结构示意图；
图4A至图4D分别示出了实施例2的光学成像系统的轴上色差曲线、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的光学成像系统的结构示意图；
图6A至图6D分别示出了实施例3的光学成像系统的轴上色差曲线、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的光学成像系统的结构示意图；
图8A至图8D分别示出了实施例4的光学成像系统的轴上色差曲线、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的光学成像系统的结构示意图；
图10A至图10D分别示出了实施例5的光学成像系统的轴上色差曲线、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的光学成像系统的结构示意图；
图12A至图12D分别示出了实施例6的光学成像系统的轴上色差曲线、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的光学成像系统的结构示意图；
图14A至图14D分别示出了实施例7的光学成像系统的轴上色差曲线、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的光学成像系统的结构示意图；
图16A至图16D分别示出了实施例8的光学成像系统的轴上色差曲线、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。每个透镜中最靠近物体的表面称为物侧面，每个透镜中最靠近成像面的表面称为像侧面。
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系统可包括例如七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、第六透镜和第七透镜。这七片透镜沿着光轴由物侧至像侧依 序排列。
在示例性实施方式中，第一透镜可具有正光焦度，其物侧面可为凸面，像侧面可为凹面；第二透镜可具有正光焦度；第三透镜可具有负光焦度，其物侧面可为凸面，像侧面可为凹面；第四透镜具有正光焦度或负光焦度；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，其物侧面可为凸面，像侧面可为凹面。合理配置各个透镜的光焦度与面型，可以有效地缩短系统的总长度。
在示例性实施方式中，第二透镜的物侧面和像侧面中的至少一个可为凸面。可选地，第二透镜的物侧面为凸面。
在示例性实施方式中，第四透镜可具有正光焦度，其物侧面可为凸面，像侧面可为凹面。
在示例性实施方式中，第五透镜的物侧面和像侧面中的至少一个可为凹面。可选地，第五透镜的物侧面为凹面。
在示例性实施方式中，第六透镜的物侧面和像侧面中的至少一个可为凸面。可选地，第六透镜的物侧面为凸面。
在示例性实施方式中，本申请的光学成像系统可满足条件式HFOV≥45.0°，其中，HFOV为光学成像系统的最大视场角的一半。更具体地，HFOV进一步可满足45.0°≤HFOV≤45.2°。具有较大的视场角，可有效增大光学成像系统的拍摄范围，保证光学成像系统的广角特性。
在示例性实施方式中，本申请的光学成像系统可满足条件式2＜f1/f＜5，其中，f1为第一透镜的有效焦距，f为光学成像系统的总有效焦距。更具体地，f1和f进一步可满足2.5＜f1/f＜4.5，例如，3.01≤f1/f≤4.10。合理分配光学成像系统的总有效焦距和第一透镜的有效焦距，能够有效地控制光线偏折，降低敏感性；同时，能够减小系统的球差、像散等，从而有效地提高光学成像系统的成像品质。
在示例性实施方式中，本申请的光学成像系统可满足条件式1.5＜f2/f＜2.5，其中，f2为第二透镜的有效焦距，f为光学成像系统的总有效焦距。更具体地，f2和f进一步可满足1.7＜f2/f＜2.1，例如，1.73 ≤f2/f≤2.01。合理分配整个光学成像系统的总有效焦距和第二透镜的有效焦距，能有效地平衡系统的球差、彗差、象散和畸变，提高光学成像系统的成像质量。
在示例性实施方式中，本申请的光学成像系统可满足条件式2.1＜|f3/f|＜3，其中，f3为第三透镜的有效焦距，f为光学成像系统的总有效焦距。更具体地，f3和f进一步可满足2.3＜|f3/f|＜2.9，例如，2.39≤|f3/f|≤2.87。合理分配整个光学成像系统的总有效焦距和第三透镜的有效焦距，能有效地平衡系统的场曲、轴上色差、象散和畸变，提升成像系统的解析力。
在示例性实施方式中，本申请的光学成像系统可满足条件式3.5＜f/R14＜5，其中，f为光学成像系统的总有效焦距，R14为第七透镜的像侧面的曲率半径。更具体地，f和R14进一步可满足3.7＜f/R14＜4.8，例如，3.73≤f/R14≤4.76。合理控制光学成像系统的总有效焦距和第七透镜像侧面的曲率半径，可减小光学成像系统的像散和畸变，提高光学成像系统的成像品质。
在示例性实施方式中，本申请的光学成像系统可满足条件式1＜f/R5＜1.5，其中，f为光学成像系统的总有效焦距，R5为第三透镜的物侧面的曲率半径。更具体地，f和R5进一步可满足1.1＜f/R5＜1.4，例如，1.17≤f/R5≤1.32。合理控制光学成像系统的总有效焦距和第三透镜像侧面的曲率半径，可减小光学成像系统的像散和畸变，提高光学成像系统的成像质量。
在示例性实施方式中，本申请的光学成像系统可满足条件式0.5＜R1/R2＜1，其中，R1为第一透镜的物侧面的曲率半径，R2为第一透镜的像侧面的曲率半径。更具体地，R1和R2进一步可满足0.6＜R1/R2＜0.8，例如，0.69≤R1/R2≤0.79。合理的控制第一透镜物侧面的曲率半径和第一透镜像侧面的曲率半径，可降低光线的偏折能力，可有效地提高光学成像系统的相对照度，并降低该系统的敏感性。
在示例性实施方式中，本申请的光学成像系统可满足条件式TTL/ImgH＜1.7，其中，TTL为第一透镜的物侧面的中心至光学成像系统的成像面在光轴上的距离，ImgH为光学成像系统的成像面上有效 像素区域对角线长的一半。更具体地，TTL和ImgH进一步可满足TTL/ImgH＜1.5，例如，1.45≤TTL/ImgH≤1.49。满足条件式TTL/ImgH＜1.7，可有效地压缩光学成像系统的尺寸，保证成像系统紧凑的尺寸特性。
在示例性实施方式中，本申请的光学成像系统可满足条件式10＜CT2/T23＜12，其中，CT2为第二透镜于光轴上的中心厚度，T23为第二透镜和第三透镜在光轴上的间隔距离。更具体地，CT2和T23进一步可满足10＜CT2/T23＜11.1，例如，10.14≤CT2/T23≤11.00。合理控制第二透镜的中心厚度与第二透镜和第三透镜在光轴上的空气间隔的比值，可使光线偏折趋于缓和，降低系统敏感性，同时控制系统的前段尺寸。
在示例性实施方式中，本申请的光学成像系统可满足条件式0.5＜f/∑CT＜1.5，其中，f为光学成像系统的总有效焦距，∑CT为第一透镜至第七透镜分别于光轴上的中心厚度之和。更具体地，f和∑CT进一步可满足1.20＜f/∑CT＜1.35，例如，1.25≤f/∑CT≤1.30。满足条件式0.5＜f/∑CT＜1.5，有利于确保镜头小型化。通过合理分布各透镜的中心厚度，可使光线偏折趋于缓和，降低系统敏感性；同时，有利于减小光学成像系统的像散、畸变和色差，提升解析力。
在示例性实施方式中，本申请的光学成像系统可满足条件式1.0＜R5/R6＜2.0，其中，R5为第三透镜的物侧面的曲率半径，R6为第三透镜的像侧面的曲率半径。更具体地，R5和R6进一步可满足1.4＜R5/R6＜1.6，例如，1.47≤R5/R6≤1.55。合理分配第三透镜物侧面和像侧面的曲率半径，使光学成像系统能更好地匹配芯片的主光线角度。
在示例性实施方式中，本申请的光学成像系统可满足条件式0＜T67/(CT6+CT7)＜0.5，其中，T67为第六透镜和第七透镜在光轴上的间隔距离，CT6为第六透镜于光轴上的中心厚度，CT7为第七透镜于光轴上的中心厚度。更具体地，T67、CT6和CT7进一步可满足0＜T67/(CT6+CT7)＜0.2，例如，0.10≤T67/(CT6+CT7)≤0.17。合理分配第六透镜和第七透镜的中心厚度以及第六透镜和第七透镜之间的空气 间隙，可改善光学成像系统的象散和畸变，提高成像品质，同时可减小光学成像系统的后段尺寸。
在示例性实施方式中，本申请的光学成像系统可满足条件式f/EPD＜1.8，其中，f为光学成像系统的总有效焦距，EPD为光学成像系统的入瞳直径。更具体地，f和EPD进一步可满足f/EPD＜1.6，例如，f/EPD＝1.55。满足条件式f/EPD＜1.8，具有大光圈，能增强光线较弱环境下的成像效果，提高边缘视场的相对照度，提高成像质量。
在示例性实施方式中，本申请的光学成像系统可满足条件式4.5mm＜f*TTL/ImgH＜5.5mm，其中，f为光学成像系统的总有效焦距，TTL为第一透镜的物侧面的中心至光学成像系统的成像面在光轴上的距离，ImgH为光学成像系统的成像面上有效像素区域对角线长的一半。更具体地，f、TTL和ImgH进一步可满足4.9mm＜f*TTL/ImgH＜5.4mm，例如，4.99mm≤f*TTL/ImgH≤5.34mm。合理的控制光学成像系统的总有效焦距和光学成像系统光学总长度的乘积与光学成像系统最大像高的比值，可有效地确保光学成像系统的超薄性和广角性。
在示例性实施方式中，光学成像系统还可包括至少一个光阑，以提升成像系统的成像质量。可选地，光阑可设置在物侧与第一透镜之间。
可选地，上述光学成像系统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系统可采用多片镜片，例如上文所述的七片。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，可有效地缩小系统的体积、降低系统的敏感度并提高系统的可加工性，使得光学成像系统更有利于生产加工并且可适用于便携式电子产品。另外，通过上述配置的光学成像系统，还可具有例如超薄、大视场角、低敏感性、高成像质量等有益效果。
在本申请的实施方式中，各透镜的镜面中的至少一个为非球面镜面。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系统的透镜数量，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七个透镜为例进行了描述，但是该光学成像系统不限于包括七个透镜。如果需要，该光学成像系统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系统的具体实施例。
实施例1
以下参照图1至图2D描述根据本申请实施例1的光学成像系统。图1示出了根据本申请实施例1的光学成像系统的结构示意图。
如图1所示，根据本申请示例性实施方式的光学成像系统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、滤光片E8和成像面S17。
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为凸面，像侧面S8为凹面。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为凸面。第七透镜E7具有负光焦度，其物侧面S13为凸面，像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。
表1示出了实施例1的光学成像系统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 PCTCN2018125311-appb-000001
表1
由表1可知，第一透镜E1至第七透镜E7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 PCTCN2018125311-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-S14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 3.8685E-02 -7.5030E-02 3.3153E-01 -8.6131E-01 1.3624E+00 -1.3293E+00 7.7984E-01 -2.5164E-01 3.4238E-02
S2 5.4469E-02 -1.9043E-01 6.0871E-01 -1.4254E+00 2.1261E+00 -1.9731E+00 1.1023E+00 -3.3812E-01 4.3538E-02
S3 -6.6864E-02 1.2488E-01 -5.9352E-01 1.4800E+00 -2.2588E+00 2.2207E+00 -1.3648E+00 4.7386E-01 -7.0592E-02
S4 -7.5374E-02 3.1996E-01 -7.7013E-01 8.0091E-01 1.4394E-02 -8.4404E-01 8.1912E-01 -3.3640E-01 5.3024E-02
S5 5.8042E-03 1.2210E-01 -3.1004E-01 1.9523E-01 2.3677E-01 -4.9817E-01 3.5424E-01 -1.1656E-01 1.4924E-02
S6 1.8578E-02 -1.4635E-02 1.2901E-01 -4.0504E-01 5.9948E-01 -4.9839E-01 2.3870E-01 -6.1370E-02 6.5810E-03
S7 -2.9641E-02 -3.1319E-02 7.0065E-02 -8.0957E-02 5.2412E-02 -1.3549E-02 -3.4931E-03 2.9455E-03 -5.2411E-04
S8 -3.1224E-02 -3.2933E-03 -3.4057E-02 6.1965E-02 -6.4329E-02 3.9618E-02 -1.4152E-02 2.6731E-03 -2.0396E-04
S9 -6.4627E-02 1.9635E-01 -2.5667E-01 1.9263E-01 -9.2503E-02 2.8494E-02 -5.4207E-03 5.7917E-04 -2.6558E-05
S10 -2.1850E-01 3.0275E-01 -3.1380E-01 2.1124E-01 -9.1950E-02 2.5938E-02 -4.5582E-03 4.5054E-04 -1.9033E-05
S11 6.3824E-02 -2.4289E-02 -1.7585E-02 1.0223E-02 -2.3406E-03 3.0603E-04 -2.4797E-05 1.1905E-06 -2.6106E-08
S12 1.7625E-01 -5.1744E-02 -2.5195E-02 1.9425E-02 -5.5373E-03 8.5718E-04 -7.5434E-05 3.5316E-06 -6.7955E-08
S13 -5.6033E-02 -8.3701E-02 6.3967E-02 -2.0127E-02 3.5649E-03 -3.8234E-04 2.4689E-05 -8.8513E-07 1.3551E-08
S14 -8.6913E-02 2.6101E-03 7.5007E-03 -2.2168E-03 2.9335E-04 -2.0249E-05 6.6052E-07 -4.1175E-09 -1.8175E-10
表2
表3给出实施例1中各透镜的有效焦距f1至f7、光学成像系统的总有效焦距f、光学总长度TTL(即，从第一透镜E1的物侧面S1的中心至成像面S17在光轴上的距离)以及成像面S17上有效像素区域对角线长的一半ImgH。
f1(mm) 10.97 f6(mm) 5.40
f2(mm) 6.98 f7(mm) -20.42
f3(mm) -8.50 f(mm) 3.46
f4(mm) 35.17 TTL(mm) 5.22
f5(mm) 327.56 ImgH(mm) 3.50
表3
实施例1中的光学成像系统满足：
HFOV＝45.2°，其中，HFOV为光学成像系统的最大视场角的一半；
f1/f＝3.17，其中，f1为第一透镜E1的有效焦距，f为光学成像系统的总有效焦距；
f2/f＝2.01，其中，f2为第二透镜E2的有效焦距，f为光学成像系统的总有效焦距；
|f3/f|＝2.45，其中，f3为第三透镜E3的有效焦距，f为光学成像系统的总有效焦距；
f/R14＝4.44，其中，f为光学成像系统的总有效焦距，R14为第七 透镜E7的像侧面S14的曲率半径；
f/R5＝1.17，其中，f为光学成像系统的总有效焦距，R5为第三透镜E3的物侧面S5的曲率半径；
R1/R2＝0.69，其中，R1为第一透镜E1的物侧面S1的曲率半径，R2为第一透镜E1的像侧面S2的曲率半径；
TTL/ImgH＝1.49，其中，TTL为第一透镜E1的物侧面S1的中心至成像面S17在光轴上的距离，ImgH为成像面S17上有效像素区域对角线长的一半；
CT2/T23＝10.37，其中，CT2为第二透镜E2于光轴上的中心厚度，T23为第二透镜E2和第三透镜E3在光轴上的间隔距离；
f/∑CT＝1.25，其中，f为光学成像系统的总有效焦距，∑CT为第一透镜E1至第七透镜E7分别于光轴上的中心厚度之和；
R5/R6＝1.55，其中，R5为第三透镜E3的物侧面S5的曲率半径，R6为第三透镜E3的像侧面S6的曲率半径；
T67/(CT6+CT7)＝0.11，其中，T67为第六透镜E6和第七透镜E7在光轴上的间隔距离，CT6为第六透镜E6于光轴上的中心厚度，CT7为第七透镜E7于光轴上的中心厚度；
f/EPD＝1.55，其中，f为光学成像系统的总有效焦距，EPD为光学成像系统的入瞳直径；
f*TTL/ImgH＝5.17mm，其中，f为光学成像系统的总有效焦距，TTL为第一透镜E1的物侧面S1的中心至成像面S17在光轴上的距离，ImgH为成像面S17上有效像素区域对角线长的一半。
图2A示出了实施例1的光学成像系统的轴上色差曲线，其表示不同波长的光线经由系统后的会聚焦点偏离。图2B示出了实施例1的光学成像系统的象散曲线，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的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图2D示出了实施例1的光学成像系统的倍率色差曲线，其表示光线经由系统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所给出的光学成像系统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的光学成像系统。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的光学成像系统的结构示意图。
如图3所示，根据本申请示例性实施方式的光学成像系统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、滤光片E8和成像面S17。
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为凸面，像侧面S8为凹面。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为凸面。第七透镜E7具有负光焦度，其物侧面S13为凸面，像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。
表4示出了实施例2的光学成像系统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 PCTCN2018125311-appb-000003
Figure PCTCN2018125311-appb-000004
表4
由表4可知，在实施例2中，第一透镜E1至第七透镜E7中的任意一个透镜的物侧面和像侧面均为非球面。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。
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 4.9826E-02 -2.1260E-01 1.0896E+00 -3.3849E+00 6.5475E+00 -7.9055E+00 5.7728E+00 -2.3261E+00 3.9620E-01
S2 9.0310E-02 -5.6426E-01 2.6947E+00 -8.3528E+00 1.6233E+01 -1.9732E+01 1.4556E+01 -5.9512E+00 1.0326E+00
S3 -4.9787E-02 -8.6610E-02 5.4227E-01 -2.1194E+00 4.8490E+00 -6.5881E+00 5.2753E+00 -2.3002E+00 4.2015E-01
S4 -6.6415E-02 2.5223E-01 -5.3836E-01 2.8972E-01 8.8951E-01 -2.0225E+00 1.8774E+00 -8.5934E-01 1.5835E-01
S5 1.4501E-02 1.1866E-01 -3.9158E-01 5.1930E-01 -3.6853E-01 1.0292E-01 3.5325E-02 -3.3080E-02 6.8557E-03
S6 1.4278E-02 5.1462E-02 -1.1090E-01 5.9034E-02 4.9123E-02 -9.6734E-02 6.5369E-02 -2.1198E-02 2.7515E-03
S7 -5.9641E-02 1.2059E-01 -3.8085E-01 7.4167E-01 -8.8860E-01 6.6345E-01 -3.0065E-01 7.5551E-02 -8.0807E-03
S8 -4.8414E-02 4.6816E-02 -7.2679E-02 2.8786E-05 9.6787E-02 -1.1267E-01 6.0505E-02 -1.6209E-02 1.7475E-03
S9 -6.4214E-02 2.0909E-01 -2.6663E-01 1.8584E-01 -7.8180E-02 1.9196E-02 -2.3719E-03 6.9491E-05 8.0286E-06
S10 -2.4590E-01 3.5415E-01 -3.7695E-01 2.6306E-01 -1.2000E-01 3.5875E-02 -6.7420E-03 7.1690E-04 -3.2706E-05
S11 8.1928E-02 -6.1479E-02 1.6514E-02 -8.7923E-03 4.1420E-03 -1.0360E-03 1.3989E-04 -9.8417E-06 2.8513E-07
S12 2.0863E-01 -9.5843E-02 4.5061E-03 6.7244E-03 -1.9697E-03 2.0693E-04 -1.7885E-06 -1.1578E-06 5.9942E-08
S13 -6.0595E-02 -9.6206E-02 7.6298E-02 -2.5011E-02 4.6222E-03 -5.1788E-04 3.4985E-05 -1.3143E-06 2.1126E-08
S14 -9.3809E-02 4.3728E-03 7.5497E-03 -2.2507E-03 2.8205E-04 -1.6126E-05 1.6908E-07 2.2349E-08 -7.3190E-10
表5
表6给出实施例2中各透镜的有效焦距f1至f7、光学成像系统的总有效焦距f、光学总长度TTL以及成像面S17上有效像素区域对角线长的一半ImgH。
f1(mm) 12.32 f6(mm) 5.22
f2(mm) 6.44 f7(mm) -19.96
f3(mm) -8.29 f(mm) 3.47
f4(mm) 28.71 TTL(mm) 5.22
f5(mm) -74.3 ImgH(mm) 3.50
表6
图4A示出了实施例2的光学成像系统的轴上色差曲线，其表示不同波长的光线经由系统后的会聚焦点偏离。图4B示出了实施例2的光学成像系统的象散曲线，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的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图4D示出了实施例2的光学成像系统的倍率色差曲线，其表示光线经由系统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所给出的光学成像系统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的光学成像系统。图5示出了根据本申请实施例3的光学成像系统的结构示意图。
如图5所示，根据本申请示例性实施方式的光学成像系统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、滤光片E8和成像面S17。
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为凸面，像侧面S8为凹面。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具有负光焦度，其物侧面S13为凸面，像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。
表7示出了实施例3的光学成像系统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 PCTCN2018125311-appb-000005
表7
由表7可知，在实施例3中，第一透镜E1至第七透镜E7中的任意一个透镜的物侧面和像侧面均为非球面。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。
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.8790E-02 1.5890E-02 -1.2147E-01 3.8322E-01 -6.7037E-01 6.8896E-01 -4.1236E-01 1.3252E-01 -1.7618E-02
S2 8.4723E-02 -2.1494E-01 4.0876E-01 -7.1975E-01 1.0105E+00 -1.0397E+00 7.1846E-01 -2.8946E-01 5.0169E-02
S3 -4.1068E-02 -3.2006E-02 7.5100E-02 -4.6636E-01 1.2265E+00 -1.6583E+00 1.2574E+00 -5.0736E-01 8.4375E-02
S4 -2.5133E-02 1.1121E-01 -3.8488E-01 6.1581E-01 -6.9055E-01 6.9245E-01 -5.4623E-01 2.5338E-01 -4.8669E-02
S5 4.0167E-02 -2.6742E-03 -1.1963E-01 1.9622E-01 -2.4989E-01 3.0286E-01 -2.6646E-01 1.2726E-01 -2.3941E-02
S6 2.1507E-02 3.0306E-02 -7.2030E-02 8.3874E-03 9.6466E-02 -1.2460E-01 7.1170E-02 -1.9332E-02 2.0009E-03
S7 -6.0328E-02 1.3022E-01 -3.9213E-01 7.3005E-01 -8.5613E-01 6.3395E-01 -2.8751E-01 7.2955E-02 -7.9492E-03
S8 -7.0147E-02 9.0384E-02 -1.5615E-01 1.2169E-01 -3.3571E-02 -1.9093E-02 1.8566E-02 -5.7022E-03 6.3430E-04
S9 -1.3588E-01 3.5532E-01 -4.4934E-01 3.3283E-01 -1.5569E-01 4.6274E-02 -8.4964E-03 8.8397E-04 -4.0055E-05
S10 -3.1677E-01 5.1110E-01 -5.5811E-01 3.7814E-01 -1.5967E-01 4.2513E-02 -6.9671E-03 6.4311E-04 -2.5618E-05
S11 8.7959E-02 -2.6518E-02 -4.1880E-02 2.6419E-02 -7.1171E-03 1.0893E-03 -9.9589E-05 5.1267E-06 -1.1533E-07
S12 2.4354E-01 -1.0620E-01 -1.8017E-02 2.7754E-02 -1.0079E-02 1.8984E-03 -2.0126E-04 1.1382E-05 -2.6753E-07
S13 -6.8380E-02 -1.0250E-01 8.5658E-02 -2.8655E-02 5.2948E-03 -5.8412E-04 3.8417E-05 -1.3939E-06 2.1516E-08
S14 -1.8855E-01 8.8177E-02 -3.6778E-02 1.1910E-02 -2.4586E-03 3.0599E-04 -2.2272E-05 8.7441E-07 -1.4319E-08
表8
表9给出实施例3中各透镜的有效焦距f1至f7、光学成像系统的总有效焦距f、光学总长度TTL以及成像面S17上有效像素区域对角线长的一半ImgH。
f1(mm) 14.20 f6(mm) 5.73
f2(mm) 6.00 f7(mm) -29.18
f3(mm) -8.38 f(mm) 3.47
f4(mm) 37.84 TTL(mm) 5.20
f5(mm) 339.79 ImgH(mm) 3.50
表9
图6A示出了实施例3的光学成像系统的轴上色差曲线，其表示不同波长的光线经由系统后的会聚焦点偏离。图6B示出了实施例3的光学成像系统的象散曲线，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的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图6D示出了实施例3的光学成像系统的倍率色差曲线，其表示光线经由系统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所给出的光学成像系统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的光学成像系统。图7示出了根据本申请实施例4的光学成像系统的结构示意图。
如图7所示，根据本申请示例性实施方式的光学成像系统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、滤光片E8和成像面S17。
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为凸面，像侧面S8为凹面。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为凸面。第七透镜E7具有负光焦度，其物侧面S13为凸面，像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。
表10示出了实施例4的光学成像系统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 PCTCN2018125311-appb-000006
表10
由表10可知，在实施例4中，第一透镜E1至第七透镜E7中的任意一个透镜的物侧面和像侧面均为非球面。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。
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 4.7548E-02 -1.8294E-01 1.0016E+00 -3.2882E+00 6.6485E+00 -8.3192E+00 6.2598E+00 -2.5897E+00 4.5190E-01
S2 8.5629E-02 -5.3504E-01 2.5724E+00 -8.0355E+00 1.5733E+01 -1.9275E+01 1.4349E+01 -5.9300E+00 1.0424E+00
S3 -6.3709E-02 1.0246E-01 -4.2153E-01 6.9974E-01 -3.1218E-01 -6.0457E-01 1.0268E+00 -6.2147E-01 1.3884E-01
S4 -7.6430E-02 2.8174E-01 -4.1477E-01 -6.3705E-01 3.2455E+00 -5.1172E+00 4.1252E+00 -1.7197E+00 2.9444E-01
S5 2.8585E-03 2.0561E-01 -7.3477E-01 1.2110E+00 -1.1347E+00 5.9350E-01 -1.4647E-01 3.3151E-03 3.7481E-03
S6 8.1207E-03 8.2055E-02 -2.0831E-01 2.2442E-01 -9.9599E-02 -2.5949E-02 4.9236E-02 -2.0082E-02 2.8147E-03
S7 -2.5440E-02 -5.0051E-02 1.1700E-01 -1.5916E-01 1.5393E-01 -1.0811E-01 5.2051E-02 -1.5023E-02 1.9004E-03
S8 -2.3020E-02 -7.7826E-02 2.1859E-01 -4.1236E-01 4.6923E-01 -3.2775E-01 1.3729E-01 -3.1609E-02 3.0707E-03
S9 -6.4215E-02 1.9620E-01 -2.4842E-01 1.7367E-01 -7.3491E-02 1.7991E-02 -2.1165E-03 2.5430E-05 1.1817E-05
S10 -2.3585E-01 3.4816E-01 -3.7954E-01 2.6696E-01 -1.2078E-01 3.5223E-02 -6.3716E-03 6.4620E-04 -2.7946E-05
S11 6.7901E-02 -2.7218E-02 -1.8664E-02 1.1319E-02 -2.6810E-03 3.6609E-04 -3.1513E-05 1.6355E-06 -3.9190E-08
S12 1.8513E-01 -5.8639E-02 -2.3834E-02 1.9675E-02 -5.6818E-03 8.7843E-04 -7.6223E-05 3.4571E-06 -6.2583E-08
S13 -5.8662E-02 -9.1880E-02 7.2240E-02 -2.3457E-02 4.2961E-03 -4.7748E-04 3.2035E-05 -1.1970E-06 1.9171E-08
S14 -9.3992E-02 5.6680E-03 6.3078E-03 -1.7217E-03 1.5900E-04 6.4423E-07 -1.1674E-06 7.9920E-08 -1.7628E-09
表11
表12给出实施例4中各透镜的有效焦距f1至f7、光学成像系统的总有效焦距f、光学总长度TTL以及成像面S17上有效像素区域对角线长的一半ImgH。
f1(mm) 11.36 f6(mm) 5.28
f2(mm) 6.81 f7(mm) -21.86
f3(mm) -8.60 f(mm) 3.43
f4(mm) 35.76 TTL(mm) 5.16
f5(mm) -1000.05 ImgH(mm) 3.48
表12
图8A示出了实施例4的光学成像系统的轴上色差曲线，其表示不同波长的光线经由系统后的会聚焦点偏离。图8B示出了实施例4的光学成像系统的象散曲线，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的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图8D示出了实施例4的光学成像系统的倍率色差曲线，其表示光线经由系统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所给出的光学成像系统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的光学成像系 统。图9示出了根据本申请实施例5的光学成像系统的结构示意图。
如图9所示，根据本申请示例性实施方式的光学成像系统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、滤光片E8和成像面S17。
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为凸面，像侧面S8为凹面。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具有负光焦度，其物侧面S13为凸面，像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。
表13示出了实施例5的光学成像系统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 PCTCN2018125311-appb-000007
Figure PCTCN2018125311-appb-000008
表13
由表13可知，在实施例5中，第一透镜E1至第七透镜E7中的任意一个透镜的物侧面和像侧面均为非球面。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。
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.2644E-02 7.9301E-02 -3.5058E-01 8.7242E-01 -1.3394E+00 1.2799E+00 -7.3924E-01 2.3512E-01 -3.1471E-02
S2 4.9610E-02 -3.3084E-02 -3.4075E-01 1.5325E+00 -3.3019E+00 4.0569E+00 -2.8691E+00 1.0844E+00 -1.6937E-01
S3 -6.4367E-02 8.5187E-02 -3.3965E-01 6.2642E-01 -5.9004E-01 2.4276E-01 4.1982E-02 -7.7877E-02 2.0749E-02
S4 -1.9523E-02 -1.0280E-01 7.3628E-01 -2.5186E+00 4.7130E+00 -5.1179E+00 3.2405E+00 -1.1158E+00 1.6199E-01
S5 5.3278E-02 -8.7441E-02 1.5862E-01 -4.5678E-01 7.9405E-01 -7.5645E-01 3.8762E-01 -9.7159E-02 8.7280E-03
S6 4.0479E-02 -9.8469E-02 3.5630E-01 -8.9413E-01 1.3169E+00 -1.1623E+00 6.0675E-01 -1.7268E-01 2.0696E-02
S7 -1.3909E-02 -1.2144E-01 3.4221E-01 -6.0586E-01 6.9827E-01 -5.1719E-01 2.3701E-01 -6.1059E-02 6.7260E-03
S8 -5.0290E-02 6.4632E-02 -1.6264E-01 1.9817E-01 -1.5333E-01 7.5653E-02 -2.3120E-02 4.0262E-03 -3.0911E-04
S9 -9.3502E-02 3.0239E-01 -4.2674E-01 3.4784E-01 -1.8092E-01 6.0106E-02 -1.2278E-02 1.4024E-03 -6.8457E-05
S10 -2.5291E-01 3.9243E-01 -4.4599E-01 3.2435E-01 -1.4986E-01 4.4126E-02 -8.0010E-03 8.1074E-04 -3.5008E-05
S11 1.0504E-01 -7.6365E-02 6.0360E-03 4.5439E-03 -1.5588E-03 2.5617E-04 -2.6237E-05 1.6163E-06 -4.4786E-08
S12 2.6623E-01 -1.6076E-01 3.3789E-02 2.0305E-03 -2.6673E-03 6.0970E-04 -6.7809E-05 3.8009E-06 -8.5691E-08
S13 -2.8765E-02 -1.2683E-01 9.1184E-02 -2.8886E-02 5.1574E-03 -5.5281E-04 3.5335E-05 -1.2434E-06 1.8562E-08
S14 -1.2649E-01 3.7450E-02 -1.5051E-02 6.4640E-03 -1.6213E-03 2.2624E-04 -1.7683E-05 7.2744E-07 -1.2287E-08
表14
表15给出实施例5中各透镜的有效焦距f1至f7、光学成像系统的总有效焦距f、光学总长度TTL以及成像面S17上有效像素区域对角线长的一半ImgH。
f1(mm) 10.96 f6(mm) 5.68
f2(mm) 6.56 f7(mm) -28.88
f3(mm) -9.87 f(mm) 3.44
f4(mm) 28.71 TTL(mm) 5.14
f5(mm) -74.30 ImgH(mm) 3.50
表15
图10A示出了实施例5的光学成像系统的轴上色差曲线，其表示不同波长的光线经由系统后的会聚焦点偏离。图10B示出了实施例5的光学成像系统的象散曲线，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的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图10D示出了实施例5的光学成像系统的倍率色差曲线，其表示光线经由系统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所给出的光学成像系统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的光学成像系统。图11示出了根据本申请实施例6的光学成像系统的结构示意图。
如图11所示，根据本申请示例性实施方式的光学成像系统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、滤光片E8和成像面S17。
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为凸面，像侧面S8为凹面。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为凸面，像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。
表16示出了实施例6的光学成像系统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 PCTCN2018125311-appb-000009
Figure PCTCN2018125311-appb-000010
表16
由表16可知，在实施例6中，第一透镜E1至第七透镜E7中的任意一个透镜的物侧面和像侧面均为非球面。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。
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 5.2835E-02 -2.4058E-01 1.2548E+00 -3.9435E+00 7.7162E+00 -9.4347E+00 6.9855E+00 -2.8572E+00 4.9448E-01
S2 1.0968E-01 -6.4245E-01 3.0012E+00 -9.4614E+00 1.8828E+01 -2.3435E+01 1.7684E+01 -7.3892E+00 1.3098E+00
S3 -4.6076E-02 -7.5990E-02 5.1124E-01 -2.3066E+00 5.6629E+00 -7.9854E+00 6.5465E+00 -2.9047E+00 5.3855E-01
S4 -7.8728E-02 3.8826E-01 -1.1143E+00 1.4765E+00 -3.7215E-01 -1.4611E+00 1.9910E+00 -1.0628E+00 2.1332E-01
S5 3.0910E-02 1.0150E-01 -5.0396E-01 8.4368E-01 -6.9304E-01 1.6503E-01 1.5379E-01 -1.1863E-01 2.4398E-02
S6 2.4008E-02 4.6322E-02 -1.7535E-01 2.4032E-01 -1.8165E-01 6.1666E-02 7.5362E-03 -1.1397E-02 2.2765E-03
S7 -4.8620E-02 5.2360E-02 -1.6231E-01 3.5516E-01 -4.7751E-01 3.9461E-01 -1.9535E-01 5.3178E-02 -6.1475E-03
S8 -2.6671E-02 -8.2302E-02 2.3318E-01 -4.2646E-01 4.6982E-01 -3.2141E-01 1.3273E-01 -3.0117E-02 2.8711E-03
S9 -1.5937E-02 2.6623E-02 9.9838E-03 -7.1593E-02 8.4650E-02 -5.0800E-02 1.6764E-02 -2.8790E-03 2.0123E-04
S10 -3.4351E-01 5.7462E-01 -6.7268E-01 5.1370E-01 -2.5020E-01 7.7450E-02 -1.4760E-02 1.5783E-03 -7.2458E-05
S11 1.2568E-01 -6.0901E-02 -1.5125E-02 1.4779E-02 -3.7721E-03 4.2605E-04 -1.4127E-05 -1.1526E-06 8.1500E-08
S12 8.8639E-02 1.5451E-02 -7.5790E-02 4.7418E-02 -1.5224E-02 2.8947E-03 -3.2916E-04 2.0747E-05 -5.5908E-07
S13 -1.2414E-01 -1.9749E-02 4.3256E-02 -1.7773E-02 3.7534E-03 -4.6425E-04 3.4005E-05 -1.3703E-06 2.3451E-08
S14 -1.6910E-01 8.5166E-02 -3.2803E-02 8.9117E-03 -1.5665E-03 1.6912E-04 -1.0601E-05 3.4426E-07 -4.2509E-09
表17
表18给出实施例6中各透镜的有效焦距f1至f7、光学成像系统的总有效焦距f、光学总长度TTL以及成像面S17上有效像素区域对角线长的一半ImgH。
f1(mm) 13.28 f6(mm) -1353.69
f2(mm) 6.28 f7(mm) -123.3
f3(mm) -8.92 f(mm) 3.44
f4(mm) 26.64 TTL(mm) 5.08
f5(mm) 7.36 ImgH(mm) 3.50
表18
图12A示出了实施例6的光学成像系统的轴上色差曲线，其表示不同波长的光线经由系统后的会聚焦点偏离。图12B示出了实施例6的光学成像系统的象散曲线，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的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图12D示出了实施例6的光学成像系统的倍率色差曲线，其表示光线经由系统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所给出的光学成像系统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的光学成像系统。图13示出了根据本申请实施例7的光学成像系统的结构示意图。
如图13所示，根据本申请示例性实施方式的光学成像系统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、滤光片E8和成像面S17。
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为凸面，像侧面S8为凹面。第五透镜E5具有负光焦度，其物侧面S9为凹面，像侧面S10为凹面。第六透镜E6具有正光焦度，其物侧面S11为凸面，像侧面S12为凸面。第七透镜E7具有负光焦度，其物侧面S13为凸面，像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。来自物体的 光依序穿过各表面S1至S16并最终成像在成像面S17上。
表19示出了实施例7的光学成像系统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 PCTCN2018125311-appb-000011
表19
由表19可知，在实施例7中，第一透镜E1至第七透镜E7中的任意一个透镜的物侧面和像侧面均为非球面。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。
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 3.2106E-02 -1.8274E-02 8.2766E-02 -2.5551E-01 4.7395E-01 -5.2983E-01 3.4897E-01 -1.2408E-01 1.8286E-02
S2 5.1519E-02 -6.2949E-02 -2.2825E-01 1.2618E+00 -2.9259E+00 3.7866E+00 -2.7985E+00 1.1014E+00 -1.7891E-01
S3 -5.2635E-02 3.8132E-02 -2.4272E-01 5.0762E-01 -5.6345E-01 3.5715E-01 -9.4200E-02 -1.7765E-02 1.1411E-02
S4 -7.2011E-02 3.4465E-01 -1.0044E+00 1.5885E+00 -1.4816E+00 8.5195E-01 -3.0043E-01 5.8607E-02 -4.4664E-03
S5 1.1100E-02 1.6756E-01 -6.3626E-01 1.1120E+00 -1.2220E+00 9.0000E-01 -4.4403E-01 1.3404E-01 -1.8445E-02
S6 1.2567E-02 4.9292E-02 -7.0296E-02 -8.5196E-02 3.0806E-01 -3.5831E-01 2.1579E-01 -6.7318E-02 8.6321E-03
S7 -4.7640E-02 6.2614E-02 -1.9620E-01 3.7650E-01 -4.3922E-01 3.1825E-01 -1.4031E-01 3.4505E-02 -3.6487E-03
S8 -4.1372E-02 7.4713E-03 1.6584E-02 -1.1150E-01 1.7504E-01 -1.4004E-01 6.2360E-02 -1.4701E-02 1.4306E-03
S9 -9.7723E-02 2.9756E-01 -4.0413E-01 3.1443E-01 -1.5399E-01 4.7820E-02 -9.1142E-03 9.7257E-04 -4.4489E-05
S10 -2.3482E-01 3.4507E-01 -3.8177E-01 2.6818E-01 -1.1869E-01 3.3445E-02 -5.8287E-03 5.7134E-04 -2.4023E-05
S11 6.5549E-02 -2.2797E-02 -2.6157E-02 1.4015E-02 -2.7521E-03 2.2542E-04 1.4727E-07 -1.1679E-06 5.2920E-08
S12 2.0676E-01 -6.7385E-02 -3.1573E-02 2.7896E-02 -8.9040E-03 1.5524E-03 -1.5546E-04 8.3928E-06 -1.8946E-07
S13 -1.0787E-01 -5.7378E-02 6.6043E-02 -2.4410E-02 4.8320E-03 -5.6541E-04 3.9253E-05 -1.4989E-06 2.4310E-08
S14 -1.7372E-01 9.1987E-02 -3.8709E-02 1.1858E-02 -2.3713E-03 2.9451E-04 -2.1796E-05 8.7906E-07 -1.4862E-08
表20
表21给出实施例7中各透镜的有效焦距f1至f7、光学成像系统的总有效焦距f、光学总长度TTL以及成像面S17上有效像素区域对角线长的一半ImgH。
f1(mm) 11.70 f6(mm) 3.30
f2(mm) 6.70 f7(mm) -5.62
f3(mm) -8.65 f(mm) 3.41
f4(mm) 26.51 TTL(mm) 5.15
f5(mm) -46.12 ImgH(mm) 3.48
表21
图14A示出了实施例7的光学成像系统的轴上色差曲线，其表示不同波长的光线经由系统后的会聚焦点偏离。图14B示出了实施例7的光学成像系统的象散曲线，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的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图14D示出了实施例7的光学成像系统的倍率色差曲线，其表示光线经由系统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所给出的光学成像系统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的光学成像系统。图15示出了根据本申请实施例8的光学成像系统的结构示意图。
如图15所示，根据本申请示例性实施方式的光学成像系统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、滤光片E8和成像面S17。
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为凸面，像侧面S8为凹面。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为凸面。第七透镜E7具有负光焦度，其物侧面S13为凸面，像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。
表22示出了实施例8的光学成像系统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 PCTCN2018125311-appb-000012
表22
由表22可知，在实施例8中，第一透镜E1至第七透镜E7中的任意一个透镜的物侧面和像侧面均为非球面。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。
面号 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 3.1670E-02 -2.9352E-02 1.5445E-01 -4.5513E-01 7.7916E-01 -7.9769E-01 4.8063E-01 -1.5681E-01 2.1323E-02
S2 4.1365E-02 -4.2536E-02 -1.5396E-01 7.3915E-01 -1.5057E+00 1.7081E+00 -1.1045E+00 3.8028E-01 -5.4114E-02
S3 -5.7934E-02 4.6487E-02 -1.8993E-01 3.3263E-01 -2.9877E-01 1.3330E-01 -3.0841E-03 -2.3085E-02 6.7607E-03
S4 -6.2103E-02 2.4168E-01 -6.5150E-01 1.1064E+00 -1.3415E+00 1.1947E+00 -7.1887E-01 2.4963E-01 -3.6910E-02
S5 8.1606E-03 1.1119E-01 -3.7426E-01 6.4469E-01 -7.9602E-01 7.0296E-01 -4.0906E-01 1.3645E-01 -1.9370E-02
S6 1.5591E-02 -2.4572E-03 8.6501E-02 -2.9912E-01 4.4400E-01 -3.6793E-01 1.7719E-01 -4.6329E-02 5.1085E-03
S7 -3.6978E-02 4.0577E-02 -1.9247E-01 4.4106E-01 -5.6741E-01 4.3821E-01 -2.0205E-01 5.1304E-02 -5.5330E-03
S8 -3.2334E-02 -3.4941E-03 5.2383E-03 -4.6287E-02 7.5266E-02 -5.9991E-02 2.6154E-02 -5.9862E-03 5.6309E-04
S9 -7.8993E-02 2.2011E-01 -2.7128E-01 1.9117E-01 -8.5520E-02 2.4469E-02 -4.3272E-03 4.3127E-04 -1.8542E-05
S10 -1.9489E-01 2.4936E-01 -2.4081E-01 1.5005E-01 -6.0258E-02 1.5772E-02 -2.5977E-03 2.4296E-04 -9.7828E-06
S11 6.1380E-02 -3.3935E-02 -4.7151E-03 3.3387E-03 -3.0749E-04 -5.1584E-05 1.2504E-05 -9.4009E-07 2.5245E-08
S12 1.7882E-01 -7.5580E-02 -8.4629E-05 7.6255E-03 -2.4427E-03 3.7670E-04 -3.1647E-05 1.3716E-06 -2.3556E-08
S13 -1.0961E-01 -2.3240E-02 3.4775E-02 -1.2177E-02 2.2322E-03 -2.4195E-04 1.5634E-05 -5.5851E-07 8.5083E-09
S14 -1.3466E-01 5.9520E-02 -2.0043E-02 5.0409E-03 -8.5659E-04 9.2377E-05 -6.0118E-06 2.1488E-07 -3.2360E-09
表23
表24给出实施例8中各透镜的有效焦距f1至f7、光学成像系统的总有效焦距f、光学总长度TTL以及成像面S17上有效像素区域对角线长的一半ImgH。
f1(mm) 11.09 f6(mm) 4.75
f2(mm) 7.00 f7(mm) -8.70
f3(mm) -8.88 f(mm) 3.68
f4(mm) 37.82 TTL(mm) 5.42
f5(mm) -2363.45 ImgH(mm) 3.74
表24
图16A示出了实施例8的光学成像系统的轴上色差曲线，其表示不同波长的光线经由系统后的会聚焦点偏离。图16B示出了实施例8的光学成像系统的象散曲线，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的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图16D示出了实施例8的光学成像系统的倍率色差曲线，其表示光线经由系统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所给出的光学成像系统能够实现 良好的成像品质。
综上，实施例1至实施例8分别满足表25中所示的关系。
条件式\实施例 1 2 3 4 5 6 7 8
HFOV(°) 45.2 45.2 45.2 45.1 45.2 45.2 45.2 45.0
f1/f 3.17 3.56 4.10 3.31 3.19 3.87 3.43 3.01
f2/f 2.01 1.86 1.73 1.99 1.91 1.83 1.96 1.90
|f3/f| 2.45 2.39 2.42 2.51 2.87 2.60 2.54 2.41
f/R14 4.44 4.74 4.76 4.51 4.63 3.73 4.20 4.12
f/R5 1.17 1.23 1.19 1.26 1.17 1.32 1.23 1.22
R1/R2 0.69 0.73 0.79 0.71 0.71 0.77 0.72 0.70
TTL/ImgH 1.49 1.49 1.49 1.48 1.47 1.45 1.48 1.45
CT2/T23 10.37 10.46 10.47 10.24 11.00 10.14 10.24 10.58
f/∑CT 1.25 1.27 1.29 1.27 1.25 1.28 1.30 1.30
R5/R6 1.55 1.54 1.55 1.51 1.48 1.47 1.52 1.55
T67/(CT6+CT7) 0.11 0.10 0.13 0.10 0.10 0.10 0.16 0.17
f/EPD 1.55 1.55 1.55 1.55 1.55 1.55 1.55 1.55
f*TTL/ImgH(mm) 5.17 5.17 5.15 5.08 5.05 4.99 5.04 5.34
表25
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系统。
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 (42)

  1. 光学成像系统，沿着光轴由物侧至像侧依序包括：第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜，
    其特征在于，
    所述第一透镜具有正光焦度，其物侧面为凸面，像侧面为凹面；
    所述第二透镜具有正光焦度；
    所述第三透镜具有负光焦度，其物侧面为凸面，像侧面为凹面；
    所述第四透镜、所述第五透镜、所述第六透镜均具有光焦度；
    所述第七透镜具有光焦度，其物侧面为凸面，像侧面为凹面，
    所述光学成像系统的最大视场角的一半HFOV满足HFOV≥45.0°。
  2. 根据权利要求1所述的光学成像系统，其特征在于，所述第一透镜的有效焦距f1与所述光学成像系统的总有效焦距f满足2＜f1/f＜5。
  3. 根据权利要求1所述的光学成像系统，其特征在于，所述第二透镜的有效焦距f2与所述光学成像系统的总有效焦距f满足1.5＜f2/f＜2.5。
  4. 根据权利要求1所述的光学成像系统，其特征在于，所述第三透镜的有效焦距f3与所述光学成像系统的总有效焦距f满足2.1＜|f3/f|＜3。
  5. 根据权利要求1所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述第七透镜的像侧面的曲率半径R14满足3.5＜f/R14＜5。
  6. 根据权利要求1所述的光学成像系统，其特征在于，所述光学 成像系统的总有效焦距f与所述第三透镜的物侧面的曲率半径R5满足1＜f/R5＜1.5。
  7. 根据权利要求1所述的光学成像系统，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0.5＜R1/R2＜1。
  8. 根据权利要求1所述的光学成像系统，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1.0＜R5/R6＜2.0。
  9. 根据权利要求1所述的光学成像系统，其特征在于，所述第一透镜的物侧面的中心至所述光学成像系统的成像面在所述光轴上的距离TTL与所述光学成像系统的成像面上有效像素区域对角线长的一半ImgH满足TTL/ImgH＜1.7。
  10. 根据权利要求9所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f、所述第一透镜的物侧面的中心至所述光学成像系统的成像面在所述光轴上的距离TTL以及所述光学成像系统的成像面上有效像素区域对角线长的一半ImgH满足4.5mm＜f*TTL/ImgH＜5.5mm。
  11. 根据权利要求1所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述第一透镜至所述第七透镜分别于所述光轴上的中心厚度之和∑CT满足0.5＜f/∑CT＜1.5。
  12. 根据权利要求11所述的光学成像系统，其特征在于，所述第二透镜于所述光轴上的中心厚度CT2与所述第二透镜和所述第三透镜在所述光轴上的间隔距离T23满足10＜CT2/T23＜12。
  13. 根据权利要求11所述的光学成像系统，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、所述第六透镜于所述光轴上的中心厚度CT6以及所述第七透镜于所述光轴上的中心厚度CT7满足0＜T67/(CT6+CT7)＜0.5。
  14. 根据权利要求1至13中任一项所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述光学成像系统的入瞳直径EPD满足f/EPD＜1.8。
  15. 光学成像系统，沿着光轴由物侧至像侧依序包括：第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜，
    其特征在于，
    所述第一透镜具有正光焦度，其物侧面为凸面，像侧面为凹面；
    所述第二透镜具有正光焦度；
    所述第三透镜具有负光焦度，其物侧面为凸面，像侧面为凹面；
    所述第四透镜、所述第五透镜、所述第六透镜均具有光焦度；
    所述第七透镜具有光焦度，其物侧面为凸面，像侧面为凹面，
    所述第二透镜于所述光轴上的中心厚度CT2与所述第二透镜和所述第三透镜在所述光轴上的间隔距离T23满足10＜CT2/T23＜12。
  16. 根据权利要求15所述的光学成像系统，其特征在于，所述光学成像系统的最大视场角的一半HFOV满足HFOV≥45.0°。
  17. 根据权利要求15所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述第一透镜至所述第七透镜分别于所述光轴上的中心厚度之和∑CT满足0.5＜f/∑CT＜1.5。
  18. 根据权利要求15所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述光学成像系统的入瞳直径EPD满足f/EPD＜1.8。
  19. 根据权利要求15所述的光学成像系统，其特征在于，所述第一透镜的物侧面的中心至所述光学成像系统的成像面在所述光轴上的距离TTL与所述光学成像系统的成像面上有效像素区域对角线长的一半ImgH满足TTL/ImgH＜1.7。
  20. 根据权利要求15所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f、所述第一透镜的物侧面的中心至所述光学成像系统的成像面在所述光轴上的距离TTL以及所述光学成像系统的成像面上有效像素区域对角线长的一半ImgH满足4.5mm＜f*TTL/ImgH＜5.5mm。
  21. 根据权利要求15至20中任一项所述的光学成像系统，其特征在于，所述第一透镜的有效焦距f1与所述光学成像系统的总有效焦距f满足2＜f1/f＜5。
  22. 根据权利要求15至20中任一项所述的光学成像系统，其特征在于，所述第二透镜的有效焦距f2与所述光学成像系统的总有效焦距f满足1.5＜f2/f＜2.5。
  23. 根据权利要求15至20中任一项所述的光学成像系统，其特征在于，所述第三透镜的有效焦距f3与所述光学成像系统的总有效焦距f满足2.1＜|f3/f|＜3。
  24. 根据权利要求15至20中任一项所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述第七透镜的像侧面的曲率半径R14满足3.5＜f/R14＜5。
  25. 根据权利要求15至20中任一项所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述第三透镜的物侧面 的曲率半径R5满足1＜f/R5＜1.5。
  26. 根据权利要求15至20中任一项所述的光学成像系统，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0.5＜R1/R2＜1。
  27. 根据权利要求15至20中任一项所述的光学成像系统，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1.0＜R5/R6＜2.0。
  28. 根据权利要求15至20中任一项所述的光学成像系统，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、所述第六透镜于所述光轴上的中心厚度CT6以及所述第七透镜于所述光轴上的中心厚度CT7满足0＜T67/(CT6+CT7)＜0.5。
  29. 光学成像系统，沿着光轴由物侧至像侧依序包括：第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜，
    其特征在于，
    所述第一透镜具有正光焦度，其物侧面为凸面，像侧面为凹面；
    所述第二透镜具有正光焦度；
    所述第三透镜具有负光焦度，其物侧面为凸面，像侧面为凹面；
    所述第四透镜、所述第五透镜、所述第六透镜均具有光焦度；
    所述第七透镜具有光焦度，其物侧面为凸面，像侧面为凹面，
    所述光学成像系统的总有效焦距f与所述第三透镜的物侧面的曲率半径R5满足1＜f/R5＜1.5。
  30. 根据权利要求29所述的光学成像系统，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1.0＜R5/R6＜2.0。
  31. 根据权利要求29所述的光学成像系统，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0.5＜R1/R2＜1。
  32. 根据权利要求29所述的光学成像系统，其特征在于，所述第一透镜的有效焦距f1与所述光学成像系统的总有效焦距f满足2＜f1/f＜5。
  33. 根据权利要求29所述的光学成像系统，其特征在于，所述第二透镜的有效焦距f2与所述光学成像系统的总有效焦距f满足1.5＜f2/f＜2.5。
  34. 根据权利要求29所述的光学成像系统，其特征在于，所述第三透镜的有效焦距f3与所述光学成像系统的总有效焦距f满足2.1＜|f3/f|＜3。
  35. 根据权利要求32至34中任一项所述的光学成像系统，其特征在于，所述光学成像系统的最大视场角的一半HFOV满足HFOV≥45.0°。
  36. 根据权利要求32至34中任一项所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f、所述第一透镜的物侧面的中心至所述光学成像系统的成像面在所述光轴上的距离TTL以及所述光学成像系统的成像面上有效像素区域对角线长的一半ImgH满足4.5mm＜f*TTL/ImgH＜5.5mm。
  37. 根据权利要求36所述的光学成像系统，其特征在于，所述第一透镜的物侧面的中心至所述光学成像系统的成像面在所述光轴上的距离TTL与所述光学成像系统的成像面上有效像素区域对角线长的一半ImgH满足TTL/ImgH＜1.7。
  38. 根据权利要求32至34中任一项所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述光学成像系统的入瞳直径EPD满足f/EPD＜1.8。
  39. 根据权利要求38所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述第七透镜的像侧面的曲率半径R14满足3.5＜f/R14＜5。
  40. 根据权利要求38所述的光学成像系统，其特征在于，所述光学成像系统的总有效焦距f与所述第一透镜至所述第七透镜分别于所述光轴上的中心厚度之和∑CT满足0.5＜f/∑CT＜1.5。
  41. 根据权利要求40所述的光学成像系统，其特征在于，所述第二透镜于所述光轴上的中心厚度CT2与所述第二透镜和所述第三透镜在所述光轴上的间隔距离T23满足10＜CT2/T23＜12。
  42. 根据权利要求40所述的光学成像系统，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、所述第六透镜于所述光轴上的中心厚度CT6以及所述第七透镜于所述光轴上的中心厚度CT7满足0＜T67/(CT6+CT7)＜0.5。
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