WO2021082727A1 - 光学成像镜头 - Google Patents

光学成像镜头 Download PDF

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Publication number
WO2021082727A1
WO2021082727A1 PCT/CN2020/113226 CN2020113226W WO2021082727A1 WO 2021082727 A1 WO2021082727 A1 WO 2021082727A1 CN 2020113226 W CN2020113226 W CN 2020113226W WO 2021082727 A1 WO2021082727 A1 WO 2021082727A1
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Prior art keywords
lens
optical imaging
object side
optical
image side
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PCT/CN2020/113226
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English (en)
French (fr)
Inventor
陈晨
张凯元
徐标
戴付建
赵烈烽
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浙江舜宇光学有限公司
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Priority to US17/772,514 priority Critical patent/US20220365317A1/en
Publication of WO2021082727A1 publication Critical patent/WO2021082727A1/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 -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • 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

Definitions

  • This application relates to the field of optical elements, and in particular, to an optical imaging lens.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a first lens having a positive refractive power, the object side surface of which is convex, and the image side surface is Concave surface; a second lens with optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power; a sixth lens with positive optical power; and a negative lens
  • the seventh lens with power has a concave object side surface and a concave image side surface.
  • the maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT12 of the image side surface of the first lens, and the diagonal of the effective pixel area on the imaging surface of the optical imaging lens The longer half of ImgH satisfies: 2.4 ⁇ (DT11+DT12)/ImgH ⁇ 5 ⁇ 2.7.
  • half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies: ImgH>6.2mm.
  • the refractive index N1 of the first lens and the refractive index N2 of the second lens satisfy: N1+N2>3.3.
  • the distance between the object side of the first lens and the imaging surface of the optical imaging lens on the optical axis TTL is as long as the diagonal of the effective pixel area on the imaging surface of the optical imaging lens Half of ImgH meets: TTL/ImgH ⁇ 1.25.
  • the Abbe number V1 of the first lens and the Abbe number V2 of the second lens satisfy: 78 ⁇ V1+V2 ⁇ 88.
  • the total effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy: 0.5 ⁇ f/(f1+f6+f7) ⁇ 1.0.
  • the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, and the radius of curvature R3 of the object side surface of the second lens, and the second lens The radius of curvature R4 of the image side surface satisfies: 0.3 ⁇ (R1+R2)/(R3+R4) ⁇ 0.8.
  • the effective focal length f7 of the seventh lens, the curvature radius R13 of the object side surface of the seventh lens, and the curvature radius R14 of the image side surface of the seventh lens satisfy: 0.2 ⁇ f7/(R13- R14) ⁇ 0.6.
  • the maximum field of view FOV of the optical imaging lens satisfies: 82° ⁇ FOV ⁇ 88°.
  • the central thickness CT6 and the central thickness CT7 of the seventh lens on the optical axis satisfy: 0.8 ⁇ (T45+T56+T67)/(CT5+CT6+CT7) ⁇ 1.2.
  • At least one of the first lens to the seventh lens is a glass lens.
  • the optical imaging lens provided by the present application includes multiple lenses, such as the first lens to the seventh lens.
  • multiple lenses such as the first lens to the seventh lens.
  • Fig. 1 shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application
  • 2A to 2D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 1;
  • FIG. 3 shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application
  • 4A to 4D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 2;
  • FIG. 5 shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application.
  • 6A to 6D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 3;
  • FIG. 7 shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application.
  • 8A to 8D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 4;
  • FIG. 9 shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application.
  • 10A to 10D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 5;
  • FIG. 11 shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application.
  • 12A to 12D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 6;
  • FIG. 13 shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application.
  • 14A to 14D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 7;
  • FIG. 15 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application.
  • 16A to 16D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 8;
  • FIG. 17 shows a schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application.
  • 18A to 18D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Embodiment 9;
  • FIG. 19 shows a schematic structural diagram of an optical imaging lens according to Embodiment 10 of the present application.
  • 20A to 20D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 10.
  • first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any restriction on the feature. Therefore, without departing from the teachings of the present application, the 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 for ease of description.
  • 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 surface or the aspheric surface is not limited to the shape of the spherical surface or the aspheric surface shown in the drawings.
  • the drawings are only examples and are not drawn strictly to scale.
  • the paraxial area refers to the area near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is at least in the paraxial region. Concave. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging surface is called the image side of the lens.
  • the optical imaging lens according to the exemplary embodiment of the present application may include seven lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. lens.
  • the seven lenses are arranged in order from the object side to the image side along the optical axis.
  • Each adjacent lens can have an air gap.
  • the first lens may have positive refractive power, the object side surface is convex, and the image side surface is concave;
  • the second lens may have positive refractive power or negative refractive power;
  • the third lens may have positive refractive power or Negative refractive power;
  • the fourth lens may have positive refractive power or negative refractive power;
  • the fifth lens may have positive refractive power or negative refractive power;
  • the sixth lens may have positive refractive power;
  • the seventh lens may have negative refractive power
  • the object side is concave, and the image side is concave.
  • the image side surface of the fifth lens is concave.
  • the object side surface of the sixth lens is convex.
  • the maximum effective radius DT11 of the object side surface of the first lens, the maximum effective radius DT12 of the image side surface of the first lens, and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens ImgH satisfy : 2.4 ⁇ (DT11+DT12)/ImgH ⁇ 5 ⁇ 2.7.
  • the ratio of half of the diagonal length of the effective pixel area on the imaging surface of the imaging lens is not only conducive to the reasonable control of the uniformity of the lens shape transition of the first lens and the reliability of the subsequent lens forming and assembly, but also conducive to rationally limiting the light.
  • the incident range of the light beam will not be too large at the refraction angle of the first lens, thereby reducing the off-axis aberration and reducing the system sensitivity.
  • half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies: ImgH>6.2mm. Setting a half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfies the above conditions, which is beneficial to realize the characteristics of a large image surface and a large aperture of the lens, so that the optical imaging lens group has a higher resolution.
  • the refractive index N1 of the first lens and the refractive index N2 of the second lens satisfy: N1+N2>3.3.
  • Reasonably setting the values of the refractive index of the first lens and the refractive index of the second lens is beneficial to improve the performance of the optical system.
  • the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis TTL and half the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies: TTL/ ImgH ⁇ 1.25.
  • Reasonable setting of the ratio between the distance from the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens is conducive to the realization of the optical imaging lens Ultra-thin characteristics and miniaturization.
  • the Abbe number V1 of the first lens and the Abbe number V2 of the second lens satisfy: 78 ⁇ V1+V2 ⁇ 88.
  • Reasonably setting the value range of the sum of the Abbe number of the first lens and the Abbe number of the second lens is conducive to reasonably controlling the dispersion of the optical system, improving the ability of the optical system to correct chromatic aberration, and making the optical system have a better imaging effect .
  • the total effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens satisfy: 0.5 ⁇ f/(f1+f6 +f7) ⁇ 1.0. Setting the ratio of the total effective focal length of the optical imaging lens to the effective focal length of the first lens, the effective focal length of the sixth lens, and the effective focal length of the seventh lens within a reasonable value range is beneficial to control the overall optics of the lens. The contribution of the system aberration effectively balances the off-axis aberration of the system, thereby improving the imaging quality of the optical system.
  • the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, and the radius of curvature R3 of the object side surface of the second lens and the radius of curvature R4 of the image side surface of the second lens Satisfies: 0.3 ⁇ (R1+R2)/(R3+R4) ⁇ 0.8.
  • the effective focal length f7 of the seventh lens, the curvature radius R13 of the object side surface of the seventh lens, and the curvature radius R14 of the image side surface of the seventh lens satisfy: 0.2 ⁇ f7/(R13-R14) ⁇ 0.6, For example, 0.3 ⁇ f7/(R13-R14) ⁇ 0.5. Setting the ratio of the effective focal length f7 of the seventh lens to the difference between the radius of curvature of the object side and the image side of the seventh lens within a reasonable value range is conducive to reasonable control of the deflection angle of the edge light of the optical system and ensures that the optical lens has a good performance. Processing characteristics and reduced system sensitivity.
  • the maximum field of view FOV of the optical imaging lens satisfies: 82° ⁇ FOV ⁇ 88°.
  • Reasonably setting the angle value of the maximum angle of view is beneficial to control the imaging range of the optical system.
  • the separation distance T45 between the fourth lens and the fifth lens on the optical axis, the separation distance T56 between the fifth lens and the sixth lens on the optical axis, and the sixth lens and the seventh lens on the optical axis satisfy: 0.8 ⁇ (T45+T56+T67 )/(CT5+CT6+CT7) ⁇ 1.2.
  • At least one of the first lens to the seventh lens is a glass lens.
  • the use of a glass lens in an optical imaging lens can have at least one of the following benefits: a wider refractive index distribution of the glass, a wider selection of sources of materials, and a lower thermal expansion coefficient of the glass.
  • the use of glass lenses in optical imaging systems can optimize the adverse effects caused by ambient temperature and improve the thermal stability of the optical system.
  • the above-mentioned optical imaging lens may further include a diaphragm.
  • the diaphragm can be set at an appropriate position as required.
  • the diaphragm may be provided between the object side and the first lens.
  • the above-mentioned optical imaging lens 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 according to the above-mentioned embodiment of the present application may use multiple lenses, such as the above seven lenses.
  • the optical imaging lens of the present application satisfies the requirements of large aperture, large image area, high pixels, portability, etc., and adopts a lens structure that combines a glass lens and a plastic lens to effectively improve the performance of the optical system.
  • At least one of the mirror surfaces of each lens is an aspheric mirror surface, that is, at least one of the object side surface of the first lens to the image side surface of the seventh lens is an aspheric mirror surface.
  • the characteristic of an aspheric lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspheric lens has better curvature radius characteristics, and has the advantages of improving distortion and astigmatism. After the aspheric lens is used, the aberrations that occur during imaging can be eliminated as much as possible, thereby improving the imaging quality.
  • At least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspheric mirror surface .
  • the object side and the image side of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are aspheric mirror surfaces.
  • the present application also provides an imaging device, the electronic photosensitive element of which 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 described above.
  • Exemplary embodiments of the present application also provide an electronic device including the imaging device described above.
  • the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification.
  • the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens may also include other numbers of lenses.
  • FIG. 1 is a schematic diagram showing the structure of an optical imaging lens according to Embodiment 1 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has a negative refractive power
  • the object side surface S3 is a convex surface
  • 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 concave surface
  • the image side surface S6 is a convex surface.
  • the fourth lens E4 has a positive refractive power
  • the object side surface S7 is a convex surface
  • 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 convex 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 concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 1 shows the basic parameter table of the optical imaging lens of Embodiment 1, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm).
  • the object side and image side of any one of the first lens E1 to the seventh lens E7 are aspherical, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical formula :
  • x is the distance vector height of the aspheric surface from the vertex of the aspheric surface when the height is h along the optical axis direction;
  • k is the conic coefficient;
  • Ai is the correction coefficient of the i-th order of the aspheric surface.
  • Table 2 shows the high-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 aspheric mirror S1-S14 in Example 1. .
  • FIG. 2A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 2B shows the astigmatism curve of the optical imaging lens of Example 1, which represents meridional field curvature and sagittal field curvature.
  • FIG. 2C shows a distortion curve of the optical imaging lens of Embodiment 1, which represents the distortion magnitude values corresponding to different image heights.
  • FIG. 2D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 1, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 2A to 2D, it can be seen that the optical imaging lens provided in Embodiment 1 can achieve good imaging quality.
  • FIG. 3 shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has a negative refractive power
  • the object side surface S3 is a convex surface
  • 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 concave surface
  • 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
  • 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 convex 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 concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 3 shows the basic parameter table of the optical imaging lens of Embodiment 2, wherein the units of the radius of curvature, thickness/distance, and focal length are all 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 surfaces.
  • Table 4 below shows the high-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 aspheric mirror surface S1-S14 in Example 2. .
  • FIG. 4A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 4B shows the astigmatism curve of the optical imaging lens of Example 2, which represents meridional field curvature and sagittal field curvature.
  • FIG. 4C shows a distortion curve of the optical imaging lens of Embodiment 2, which represents the distortion magnitude values corresponding to different image heights.
  • 4D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 2, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 4A to 4D that the optical imaging lens provided in Embodiment 2 can achieve good imaging quality.
  • FIG. 5 shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has a negative refractive power
  • the object side surface S3 is a convex surface
  • the image side surface S4 is a concave surface.
  • the third lens E3 has a positive refractive power
  • the object side surface S5 is a convex surface
  • 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
  • the image side surface S8 is a convex surface.
  • the fifth lens E5 has a negative refractive power
  • the object side surface S9 is a convex 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 concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, wherein the units of the radius of curvature, thickness/distance, and focal length are all 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 surfaces.
  • Table 6 below shows the high-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 aspheric mirror surface S1-S14 in Example 3. .
  • FIG. 6A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 3, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • 6B shows the astigmatism curve of the optical imaging lens of Example 3, which represents meridional field curvature and sagittal field curvature.
  • FIG. 6C shows a distortion curve of the optical imaging lens of Embodiment 3, which represents the distortion magnitude values corresponding to different image heights.
  • 6D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 3, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 6A to 6D that the optical imaging lens provided in Embodiment 3 can achieve good imaging quality.
  • FIG. 7 shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has a negative refractive power
  • the object side surface S3 is a convex surface
  • 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 concave surface
  • 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
  • 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 convex 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 concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 7 shows the basic parameter table of the optical imaging lens of Embodiment 4, wherein the units of the radius of curvature, thickness/distance, and focal length are all 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 surfaces.
  • Table 8 below shows the high-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 aspheric mirror S1-S14 in Example 4. .
  • FIG. 8A shows the on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • FIG. 8B shows the astigmatism curve of the optical imaging lens of Example 4, which represents meridional field curvature and sagittal field curvature.
  • FIG. 8C shows a distortion curve of the optical imaging lens of Embodiment 4, which represents the distortion magnitude values corresponding to different image heights.
  • FIG. 8D shows the chromatic aberration curve of magnification of the optical imaging lens of Embodiment 4, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 8A to 8D that the optical imaging lens provided in Embodiment 4 can achieve good imaging quality.
  • FIG. 9 shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has negative refractive power
  • the object side surface S3 is convex
  • the image side surface S4 is concave.
  • the third lens E3 has a negative refractive power
  • the object side surface S5 is a concave surface
  • the image side surface S6 is a convex surface.
  • the fourth lens E4 has a positive refractive power
  • the object side surface S7 is a convex surface
  • 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 convex 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 concave surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 9 shows the basic parameter table of the optical imaging lens of Embodiment 5, wherein the units of the radius of curvature, thickness/distance, and focal length are all 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 surfaces.
  • Table 10 below shows the high-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 aspheric mirror surface S1-S14 in Example 5. .
  • FIG. 10A shows the on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of the focal point of light rays of different wavelengths after passing through the lens.
  • 10B shows the astigmatism curve of the optical imaging lens of Example 5, which represents meridional field curvature and sagittal field curvature.
  • FIG. 10C shows a distortion curve of the optical imaging lens of Embodiment 5, which represents the distortion magnitude values corresponding to different image heights.
  • FIG. 10D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 5, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 10A to 10D that the optical imaging lens provided in Embodiment 5 can achieve good imaging quality.
  • FIG. 11 shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • 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
  • 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 concave surface
  • 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
  • the image side surface S8 is a convex 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 concave surface.
  • the seventh lens E7 has a negative refractive power
  • the object side surface S13 is a concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 11 shows the basic parameter table of the optical imaging lens of Embodiment 6, wherein the units of the radius of curvature, thickness/distance, and focal length are all 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 surfaces.
  • Table 12 below shows the high-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 aspheric mirror S1-S14 in Example 6. .
  • FIG. 12A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • FIG. 12B shows the astigmatism curve of the optical imaging lens of Example 6, which represents meridional field curvature and sagittal field curvature.
  • FIG. 12C shows the distortion curve of the optical imaging lens of Embodiment 6, which represents the distortion magnitude values corresponding to different image heights.
  • FIG. 12D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 6, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 12A to 12D that the optical imaging lens provided in Embodiment 6 can achieve good imaging quality.
  • FIG. 13 shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has a negative refractive power
  • the object side surface S3 is a convex surface
  • the image side surface S4 is a concave surface.
  • the third lens E3 has positive refractive power
  • the object side surface S5 is convex
  • the image side surface S6 is concave.
  • the fourth lens E4 has a negative refractive power
  • the object side surface S7 is a convex surface
  • 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 convex 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 concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 13 shows the basic parameter table of the optical imaging lens of Embodiment 7, wherein the units of the radius of curvature, thickness/distance, and focal length are all 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 surfaces.
  • Table 14 below shows the high-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 aspheric mirror surface S1-S14 in Example 7. .
  • FIG. 14A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 7, which indicates the deviation of the focal point of light rays of different wavelengths after passing through the lens.
  • FIG. 14B shows the astigmatism curve of the optical imaging lens of Example 7, which represents meridional field curvature and sagittal field curvature.
  • FIG. 14C shows a distortion curve of the optical imaging lens of Embodiment 7, which represents the distortion magnitude values corresponding to different image heights.
  • FIG. 14D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 7, which represents the deviation of different image heights on the imaging surface after light passes through the lens. It can be seen from FIGS. 14A to 14D that the optical imaging lens provided in Embodiment 7 can achieve good imaging quality.
  • FIG. 15 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has a negative refractive power
  • the object side surface S3 is a convex surface
  • the image side surface S4 is a concave surface.
  • the third lens E3 has a positive refractive power
  • the object side surface S5 is a convex surface
  • the image side surface S6 is a convex surface.
  • the fourth lens E4 has a negative refractive power
  • the object side surface S7 is a convex surface
  • 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 convex 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 concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 15 shows the basic parameter table of the optical imaging lens of Embodiment 8, wherein the units of the radius of curvature, thickness, and focal length are all millimeters (mm).
  • Example 8 the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces.
  • Table 16 below shows the high-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 aspheric mirror surface S1-S14 in Example 8. .
  • FIG. 16A shows the axial chromatic aberration curve of the optical imaging lens of Example 8, which represents the deviation of the focal point of light rays of different wavelengths after passing through the lens.
  • 16B shows the astigmatism curve of the optical imaging lens of Example 8, which represents meridional field curvature and sagittal field curvature.
  • FIG. 16C shows a distortion curve of the optical imaging lens of Embodiment 8, which represents the distortion magnitude values corresponding to different image heights.
  • 16D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 8, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 16A to 16D, it can be seen that the optical imaging lens provided in Embodiment 8 can achieve good imaging quality.
  • FIG. 17 shows a schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has a negative refractive power
  • the object side surface S3 is a convex surface
  • 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 concave surface
  • the image side surface S6 is a concave surface.
  • the fourth lens E4 has negative refractive power, and its 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 convex 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 concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • Table 17 shows the basic parameter table of the optical imaging lens of Embodiment 9, wherein the units of the radius of curvature, thickness, and focal length are all millimeters (mm).
  • Example 9 the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces.
  • Table 18 shows the high-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 aspheric mirror S1-S14 in Example 9. .
  • FIG. 18A shows the axial chromatic aberration curve of the optical imaging lens of Example 9, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • FIG. 18B shows the astigmatism curve of the optical imaging lens of Example 9, which represents meridional field curvature and sagittal field curvature.
  • FIG. 18C shows a distortion curve of the optical imaging lens of Example 9, which represents the distortion magnitude values corresponding to different image heights.
  • FIG. 18D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 9, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 18A to 18D, it can be seen that the optical imaging lens provided in Embodiment 9 can achieve good imaging quality.
  • FIG. 19 shows a schematic structural diagram of an optical imaging lens according to Embodiment 10 of the present application.
  • the optical imaging lens includes in order from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, and a fifth lens E5. ,
  • the sixth lens E6 the seventh lens E7, the filter E8 and the imaging surface S17.
  • the first lens E1 has a positive refractive power
  • the object side surface S1 is a convex surface
  • the image side surface S2 is a concave surface.
  • the second lens E2 has a negative refractive power
  • the object side surface S3 is a convex surface
  • 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 concave surface
  • 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 concave surface
  • the image side surface S8 is a convex surface.
  • the fifth lens E5 has a positive refractive power
  • the object side surface S9 is a convex 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 concave 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. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface S17.
  • the distance from the object side S1 of the first lens E1 to the imaging surface S17 on the optical axis TTL 7.77mm
  • the effective pixel area on the imaging surface S17 corresponds to
  • Table 19 shows a table of basic parameters of the optical imaging lens of Embodiment 10, wherein the units of the radius of curvature, thickness, and focal length are all 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 surfaces.
  • the following table 20 shows the high-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 aspheric mirror S1-S14 in Embodiment 10. .
  • FIG. 20A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 10, which represents the deviation of the focusing point of light of different wavelengths after passing through the lens.
  • FIG. 20B shows the astigmatism curve of the optical imaging lens of Example 10, which represents meridional field curvature and sagittal field curvature.
  • FIG. 20C shows a distortion curve of the optical imaging lens of Embodiment 10, which represents the distortion magnitude values corresponding to different image heights.
  • 20D shows the chromatic aberration curve of magnification of the optical imaging lens of Example 10, which represents the deviation of different image heights on the imaging surface after light passes through the lens. According to FIGS. 20A to 20D, it can be seen that the optical imaging lens provided in Embodiment 10 can achieve good imaging quality.
  • Example 1 to Example 10 satisfy the relationships shown in Table 21, respectively.

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Abstract

本申请公开了一种光学成像镜头，其中，光学成像镜头沿着光轴由物侧至像侧依序包括具有正光焦度的第一透镜，其物侧面为凸面，像侧面为凹面；具有光焦度的第二透镜；具有光焦度的第三透镜；具有光焦度的第四透镜；具有光焦度的第五透镜；具有正光焦度的第六透镜；以及具有负光焦度的第七透镜，其物侧面为凹面，像侧面为凹面；其中，所述第一透镜的物侧面的最大有效半径DT11、所述第一透镜的像侧面的最大有效半径DT12以及所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：2.4<(DT11+DT12)/ImgH×5<2.7。

Description

光学成像镜头
相关申请的交叉引用
本申请要求于2019年11月1日提交于中国国家知识产权局(CNIPA)的专利申请号为201911061100.4的中国专利申请的优先权和权益，上述中国专利申请通过引用整体并入本文。
技术领域
本申请涉及光学元件领域，具体地，涉及一种光学成像镜头。
背景技术
近年来随着手机拍摄技术的快速发展，光学成像镜头在手机上的应用越来越多。各大终端厂商对镜头规格也逐渐提出了越来越多的要求。尤其是高端旗舰机型的主摄像头，其愈来愈呈现出大像面、大孔径的发展趋势。同时随着手机厚度减薄，市场要求手机内置的光学成像镜头不断小型化、轻薄化。
发明内容
本申请的一方面提供了这样一种光学成像镜头，该光学成像镜头沿着光轴由物侧至像侧依序包括：具有正光焦度的第一透镜，其物侧面为凸面，像侧面为凹面；具有光焦度的第二透镜；具有光焦度的第三透镜；具有光焦度的第四透镜；具有光焦度的第五透镜；具有正光焦度的第六透镜；以及具有负光焦度的第七透镜，其物侧面为凹面，像侧面为凹面。
在一个实施方式中，所述第一透镜的物侧面的最大有效半径DT11、所述第一透镜的像侧面的最大有效半径DT12以及所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：2.4<(DT11+DT12)/ImgH×5<2.7。
在一个实施方式中，所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：ImgH>6.2mm。
在一个实施方式中，所述第一透镜的折射率N1与所述第二透镜的折射率N2满足：N1+N2>3.3。
在一个实施方式中，所述第一透镜的物侧面至所述光学成像镜头的成像面在所述光轴上的距离TTL与所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：TTL/ImgH<1.25。
在一个实施方式中，所述第一透镜的阿贝数V1与所述第二透镜的阿贝数V2满足：78<V1+V2<88。
在一个实施方式中，所述光学成像镜头的总有效焦距f、所述第一透镜的有效焦距f1、与所述第六透镜的有效焦距f6以及所述第七透镜的有效焦距f7满足：0.5<f/(f1+f6+f7)<1.0。
在一个实施方式中，所述第一透镜的物侧面的曲率半径R1、所述第一透镜的像侧面的曲率半径R2以及所述第二透镜的物侧面的曲率半径R3与所述第二透镜的像侧面的曲率半径R4满足：0.3<(R1+R2)/(R3+R4)<0.8。
在一个实施方式中，所述第七透镜的有效焦距f7、所述第七透镜的物侧面的曲率半径R13与所述第七透镜的像侧面的曲率半径R14满足：0.2<f7/(R13-R14)<0.6。
在一个实施方式中，所述光学成像镜头的最大视场角FOV满足：82°<FOV<88°。
在一个实施方式中，所述第四透镜和所述第五透镜在所述光轴上的间隔距离T45、所述 第五透镜和所述第六透镜在所述光轴上的间隔距离T56、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、所述第五透镜在所述光轴上的中心厚度CT5、所述第六透镜在所述光轴上的中心厚度CT6以及所述第七透镜在所述光轴上的中心厚度CT7满足：0.8<(T45+T56+T67)/(CT5+CT6+CT7)<1.2。
在一个实施方式中，所述第一透镜至所述第七透镜中至少有一片透镜为玻璃透镜。
本申请提供的光学成像镜头包括多片透镜，例如第一透镜至第七透镜。通过合理设置所述第一透镜的物侧面的最大有效半径、所述第一透镜的像侧面的最大有效半径以及所述光学成像镜头的成像面上有效像素区域的对角线长的一半的相互关系，并优化各透镜的光焦度和面型，彼此合理搭配，以实现光学成像镜头小型化、轻薄化的同时，兼具大孔径、大成像面的特点。
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的光学成像镜头的结构示意图；
图2A至图2D分别示出了实施例1的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图4A至图4D分别示出了实施例2的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图6A至图6D分别示出了实施例3的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图8A至图8D分别示出了实施例4的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图10A至图10D分别示出了实施例5的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图12A至图12D分别示出了实施例6的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图14A至图14D分别示出了实施例7的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图16A至图16D分别示出了实施例8的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图18A至图18D分别示出了实施例9的光学成像镜头的轴上色差曲线、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的光学成像镜头的结构示意图；
图20A至图20D分别示出了实施例10的光学成像镜头的轴上色差曲线、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。每个透镜最靠近被摄物体的表面称为该透镜的物侧面，每个透镜最靠近成像面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头可包括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。各相邻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，其物侧面为凸面，像侧面为凹面；第二透镜可具有正光焦度或负光焦度；第三透镜可具有正光焦度或负光焦度；第四透镜可具有正光焦度或负光焦度；第五透镜可具有正光焦度或负光焦度；第六透镜可具有正光焦度；以及第七透镜可具有负光焦度，其物侧面为凹面，像侧面为凹面。合理搭配光学系统中各透镜的光焦度和面型，可有效平衡光学系统的像差，提高成像质量。
在示例性实施方式中，第五透镜的像侧面为凹面。
在示例性实施方式中，第六透镜的物侧面为凸面。
在示例性实施方式中，第一透镜的物侧面的最大有效半径DT11、第一透镜的像侧面的最大有效半径DT12以及光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：2.4<(DT11+DT12)/ImgH×5<2.7。合理设置第一透镜的物侧面的最大有效半径和第一透镜的像侧面的最大有效半径大小以及第一透镜的物侧面的最大有效半径和第一透镜的像侧面的最大有效半径之和与光学成像镜头的成像面上有效像素区域的对角线长的一半的比例关系，既有利于合理控制第一透镜的透镜形状过渡的均匀性和后续透镜成型装配的可靠性，又有利于合理限制光线的入射范围，使得光线在第一透镜的折射角不会太大，从而减小轴外像差、降低系统感度。
在示例性实施方式中，光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：ImgH>6.2mm。设置光学成像镜头的成像面上有效像素区域的对角线长的一半满足上述条件，有利于实现镜头大像面大孔径的特性，使光学成像镜头组具有较高的分辨率。
在示例性实施方式中，第一透镜的折射率N1与第二透镜的折射率N2满足：N1+N2>3.3。合理设置第一透镜的折射率与第二透镜的折射率的取值，有利于提升光学系统性能。
在示例性实施方式中，第一透镜的物侧面至光学成像镜头的成像面在光轴上的距离TTL与光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：TTL/ImgH<1.25。合理设置第一透镜的物侧面至光学成像镜头的成像面在光轴上的距离与光学成像镜头的成像面上有效像素区域的对角线长的一半的比例关系，有利于实现光学成像镜头的超薄特性和小型化。
在示例性实施方式中，第一透镜的阿贝数V1与第二透镜的阿贝数V2满足：78<V1+V2<88。合理设置第一透镜的阿贝数与第二透镜的阿贝数之和的取值范围，有利于合理控制光学系统的色散，提升光学系统矫正色差的能力，使得光学系统具有较佳的成像效果。
在示例性实施方式中，光学成像镜头的总有效焦距f、第一透镜的有效焦距f1、与第六透镜的有效焦距f6以及第七透镜的有效焦距f7满足：0.5<f/(f1+f6+f7)<1.0。设置光学成像镜头的总有效焦距与第一透镜的有效焦距、第六透镜的有效焦距和第七透镜的有效焦距的焦距之和的比值在合理的数值范围内，有利于控制上述透镜对整个光学系统像差的贡献量，有效平衡系统的轴外像差，从而提高光学系统的成像质量。
在示例性实施方式中，第一透镜的物侧面的曲率半径R1、第一透镜的像侧面的曲率半径R2以及第二透镜的物侧面的曲率半径R3与第二透镜的像侧面的曲率半径R4满足：0.3<(R1+R2)/(R3+R4)<0.8。设置第一透镜的物侧面和像侧面的曲率半径之和与第二透镜的物侧面和像侧面的曲率半径之和的比值在合理的数值范围内，有利于光学系统较好地实现光路偏折以及平衡光学系统产生的高级球差。
在示例性实施方式中，第七透镜的有效焦距f7、第七透镜的物侧面的曲率半径R13与第七透镜的像侧面的曲率半径R14满足：0.2<f7/(R13-R14)<0.6，例如，0.3<f7/(R13-R14)<0.5。设置七透镜的有效焦距f7与第七透镜的物侧面和像侧面的曲率半径之差的比值在合理的数值范围内，有利于合理控制光学系统边缘光线的偏转角，保证光学透镜具有良好的可加工特性以及降低系统感度。
在示例性实施方式中，光学成像镜头的最大视场角FOV满足：82°<FOV<88°。合理设置最大视场角的角度取值，有利于控制光学系统的成像范围。
在示例性实施方式中，第四透镜和第五透镜在光轴上的间隔距离T45、第五透镜和第六透镜在光轴上的间隔距离T56、第六透镜和第七透镜在光轴上的间隔距离T67、第五透镜在 光轴上的中心厚度CT5、第六透镜在光轴上的中心厚度CT6以及第七透镜在光轴上的中心厚度CT7满足：0.8<(T45+T56+T67)/(CT5+CT6+CT7)<1.2。设置上述透镜间间隔距离与中心厚度的相互关系，使其满足上述关系条件，有利于控制光学系统中各视场的场曲贡献量在合理的范围内，以平衡其它透镜的产生的场曲量，有效提升镜头解像力。
在示例性实施方式中，第一透镜至第七透镜中至少有一片透镜为玻璃透镜。光学成像镜头中采用玻璃透镜可具有以下好处中的至少一项：玻璃的折射率分布较宽、材料的选择来源更加广泛以及玻璃的热膨胀系数较低等。同时由于玻璃的热膨胀系数较低，玻璃透镜应用于光学成像系统中可优化由于环境温度带来的不良影响，提高光学系统的热稳定性。
在示例性实施方式中，上述光学成像镜头还可包括光阑。光阑可根据需要设置在适当位置处。例如，光阑可设置在物侧与第一透镜之间。可选地，上述光学成像镜头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头可采用多片镜片，例如上文的七片。本申请的光学成像镜头，满足大孔径、大像面、高像素、轻便化等要求，采用玻璃透镜和塑胶透镜相结合的镜头结构，有效提高光学系统性能。
在示例性实施方式中，各透镜的镜面中的至少一个为非球面镜面，即，第一透镜的物侧面至第七透镜的像侧面中的至少一个镜面为非球面镜面。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。可选地，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中的每个透镜的物侧面和像侧面中的至少一个为非球面镜面。可选地，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中的每片透镜的物侧面和像侧面均为非球面镜面。
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头。
本申请的示例性实施方式还提供一种电子设备，该电子设备包括以上描述的成像装置。
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头的透镜数量，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片透镜为例进行了描述，但是该光学成像镜头不限于包括七片透镜。如果需要，该光学成像镜头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头的具体实施例。
实施例1
以下参照图1至图2D描述根据本申请实施例1的光学成像镜头。图1是示出了根据本申请实施例1的光学成像镜头的结构示意图。
如图1所示，光学成像镜头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为凹面，像侧面S6为凸面。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为凸面，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为凹面，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的光学成像镜头的基本参数表，其中，曲率半径、厚度/距离和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000001
表1
在本实施例中，光学成像镜头的总有效焦距f＝6.62mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.50mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.45mm，以及光学成像镜头的最大视场角FOV＝87.5°。
在实施例1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，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 PCTCN2020113226-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；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 4.0700E-05 2.7260E-03 -4.9400E-03 6.1350E-03 -4.9500E-03 2.5750E-03 -8.4000E-04 1.5400E-04 -1.2000E-05
S2 -1.4250E-02 4.0980E-03 6.0740E-03 -1.1190E-02 1.0616E-02 -6.3500E-03 2.3140E-03 -4.6000E-04 3.8600E-05
S3 -8.5400E-03 8.3400E-03 6.6060E-03 -1.4630E-02 1.4719E-02 -9.1200E-03 3.5400E-03 -7.8000E-04 7.3900E-05
S4 -4.8000E-04 8.5660E-03 -3.1200E-03 3.2540E-03 -6.0700E-03 6.4060E-03 -3.5800E-03 1.0430E-03 -1.2000E-04
S5 -1.5550E-02 1.9270E-03 -4.0300E-03 -5.6500E-03 1.7337E-02 -1.9210E-02 1.1088E-02 -3.2600E-03 3.7700E-04
S6 -2.8530E-02 1.9569E-02 -2.2640E-02 1.1455E-02 7.1300E-03 -1.4140E-02 9.1350E-03 -2.7500E-03 3.2300E-04
S7 -3.5690E-02 1.9959E-02 -1.9480E-02 4.2260E-03 1.0434E-02 -1.2060E-02 6.0970E-03 -1.5000E-03 1.4500E-04
S8 -3.0900E-02 1.4311E-02 -2.1040E-02 2.0594E-02 -1.5480E-02 8.0030E-03 -2.6100E-03 4.8200E-04 -3.8000E-05
S9 -5.2890E-02 1.0165E-02 4.1990E-03 -8.1600E-03 4.4240E-03 -1.2400E-03 1.6900E-04 -6.4000E-06 -4.3000E-07
S10 -6.3400E-02 1.5429E-02 -1.4000E-03 -1.1900E-03 5.6100E-04 -9.8000E-05 7.3300E-06 -1.2000E-07 -7.0000E-09
S11 -1.5780E-02 -5.5200E-03 2.9910E-03 -9.4000E-04 1.6900E-04 -1.7000E-05 1.0400E-06 -3.3000E-08 4.3900E-10
S12 1.7041E-02 -1.1480E-02 3.6200E-03 -7.8000E-04 1.0900E-04 -9.6000E-06 5.1200E-07 -1.5000E-08 1.8600E-10
S13 -2.4520E-02 3.0030E-03 6.0100E-04 -1.6000E-04 1.6200E-05 -9.1000E-07 3.0100E-08 -5.5000E-10 4.3200E-12
S14 -2.0660E-02 3.4120E-03 -3.8000E-04 2.7000E-05 -1.2000E-06 2.0400E-08 4.6100E-10 -2.7000E-11 3.3000E-13
表2
图2A示出了实施例1的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图2B示出了实施例1的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图2D示出了实施例1的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头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的光学成像镜头。图3示出了根据本申请实施例2的光学成像镜头的结构示意图。
如图3所示，光学成像镜头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为凹面，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为凸面，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为凹面，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。
在本实施例中，光学成像镜头的总有效焦距f＝6.62mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.51mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.44mm，以及光学成像镜头的最大视场角FOV＝87.5°。
表3示出了实施例2的光学成像镜头的基本参数表，其中，曲率半径、厚度/距离和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000003
Figure PCTCN2020113226-appb-000004
表3
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。下表4给出了可用于实施例2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 2.4100E-04 2.3820E-03 -4.4000E-03 5.4390E-03 -4.3800E-03 2.2660E-03 -7.3000E-04 1.3300E-04 -1.1000E-05
S2 -1.3380E-02 3.0660E-03 6.4130E-03 -1.1790E-02 1.1449E-02 -7.0100E-03 2.6050E-03 -5.3000E-04 4.5200E-05
S3 -8.3100E-03 8.0320E-03 9.6410E-03 -2.1070E-02 2.2327E-02 -1.4530E-02 5.8130E-03 -1.2900E-03 1.2200E-04
S4 -6.8000E-05 1.0638E-02 -6.8400E-03 1.4601E-02 -2.5750E-02 2.6445E-02 -1.5500E-02 4.9010E-03 -6.5000E-04
S5 -1.7720E-02 7.3840E-03 -1.8340E-02 2.4254E-02 -2.4060E-02 1.7357E-02 -8.7700E-03 2.7860E-03 -4.1000E-04
S6 -3.0660E-02 2.1357E-02 -2.5630E-02 1.5738E-02 1.4410E-03 -9.1700E-03 6.3910E-03 -1.8900E-03 2.1000E-04
S7 -3.5360E-02 1.6769E-02 -1.1660E-02 -7.7700E-03 2.1449E-02 -1.8380E-02 8.2240E-03 -1.8700E-03 1.7000E-04
S8 -3.0280E-02 1.2834E-02 -1.8070E-02 1.6735E-02 -1.2090E-02 6.0470E-03 -1.9100E-03 3.4300E-04 -2.6000E-05
S9 -5.2180E-02 1.2559E-02 5.3700E-04 -4.9300E-03 2.8940E-03 -8.4000E-04 1.2400E-04 -7.1000E-06 -2.4000E-08
S10 -6.2290E-02 1.6347E-02 -2.3800E-03 -6.8000E-04 4.3700E-04 -9.1000E-05 9.1500E-06 -4.4000E-07 7.9200E-09
S11 -1.5930E-02 -5.1600E-03 2.7780E-03 -8.8000E-04 1.6200E-04 -1.7000E-05 1.0300E-06 -3.3000E-08 4.4700E-10
S12 1.6241E-02 -1.0900E-02 3.4000E-03 -7.2000E-04 1.0200E-04 -9.1000E-06 4.8700E-07 -1.4000E-08 1.8300E-10
S13 -2.5010E-02 3.0710E-03 6.2100E-04 -1.7000E-04 1.7000E-05 -9.7000E-07 3.2200E-08 -5.9000E-10 4.7000E-12
S14 -1.9450E-02 3.0200E-03 -2.9000E-04 1.2500E-05 1.9300E-07 -5.5000E-08 2.9900E-09 -7.3000E-11 6.8100E-13
表4
图4A示出了实施例2的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图4B示出了实施例2的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图4D示出了实施例2的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头能够实现良好的成像品质。
实施例3
以下参照图5至图6D描述根据本申请实施例3的光学成像镜头。图5示出了根据本申请实施例3的光学成像镜头的结构示意图。
如图5所示，光学成像镜头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为凸面，像侧面S8为凸面。第五透镜E5具有负光焦度，其物侧面S9为凸面，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为凹面，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。
在本实施例中，光学成像镜头的总有效焦距f＝6.62mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.52mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.42mm，以及光学成像镜头的最大视场角FOV＝87.2°。
表5示出了实施例3的光学成像镜头的基本参数表，其中，曲率半径、厚度/距离和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000005
表5
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。下表6给出了可用于实施例3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 4.6900E-04 1.7690E-03 -3.8000E-03 5.1000E-03 -4.3900E-03 2.3530E-03 -7.8000E-04 1.4100E-04 -1.1126E-05
S2 -1.1250E-02 2.6340E-03 4.8680E-03 -1.0880E-02 1.1560E-02 -7.4400E-03 2.8400E-03 -5.9000E-04 5.0541E-05
S3 -5.5300E-03 1.1856E-02 1.6700E-03 -1.0800E-02 1.2750E-02 -8.5800E-03 3.5110E-03 -7.9000E-04 7.4255E-05
S4 2.6560E-03 1.0806E-02 8.7900E-03 -3.1670E-02 4.7711E-02 -4.2780E-02 2.3174E-02 -6.9100E-03 8.7633E-04
S5 -2.1030E-02 1.7450E-03 1.6062E-02 -5.5040E-02 8.6595E-02 -7.9120E-02 4.2589E-02 -1.2480E-02 1.5462E-03
S6 -2.6140E-02 7.0530E-03 -1.0000E-04 -1.3040E-02 2.0207E-02 -1.5380E-02 6.5410E-03 -1.4100E-03 1.1705E-04
S7 -2.5780E-02 -3.2400E-03 2.1864E-02 -4.5530E-02 4.8405E-02 -3.0110E-02 1.0973E-02 -2.1300E-03 1.6945E-04
S8 -2.8600E-02 1.1406E-02 -1.5960E-02 1.4476E-02 -1.0120E-02 4.8090E-03 -1.4300E-03 2.3900E-04 -1.6729E-05
S9 -5.1490E-02 1.5966E-02 -4.5500E-03 -4.2000E-04 5.4900E-04 -1.1000E-04 -5.3000E-06 4.4700E-06 -3.9279E-07
S10 -5.9620E-02 1.6241E-02 -2.6200E-03 -4.7000E-04 3.7000E-04 -8.4000E-05 9.5900E-06 -5.6000E-07 1.3630E-08
S11 -1.4880E-02 -5.4900E-03 2.8310E-03 -8.7000E-04 1.5700E-04 -1.6000E-05 9.8100E-07 -3.2000E-08 4.2420E-10
S12 1.6994E-02 -1.0950E-02 3.3250E-03 -6.8000E-04 9.1900E-05 -7.9000E-06 4.1700E-07 -1.2000E-08 1.5040E-10
S13 -2.4480E-02 2.9580E-03 5.8200E-04 -1.5000E-04 1.5500E-05 -8.6000E-07 2.8100E-08 -5.0000E-10 3.8188E-12
S14 -1.6720E-02 2.1840E-03 -1.1000E-04 -1.0000E-05 2.0000E-06 -1.4000E-07 5.3600E-09 -1.0000E-10 8.2729E-13
表6
图6A示出了实施例3的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图6B示出了实施例3的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图6D示出了实施例3的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头能够实现良好的成像品质。
实施例4
以下参照图7至图8D描述根据本申请实施例4的光学成像镜头。图7示出了根据本申请实施例4的光学成像镜头的结构示意图。
如图7所示，光学成像镜头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为凹面，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为凸面，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为凹面，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。
在本实施例中，光学成像镜头的总有效焦距f＝6.62mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.53mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.41mm，以及光学成像镜头的最大视场角FOV＝87.1°。
表7示出了实施例4的光学成像镜头的基本参数表，其中，曲率半径、厚度/距离和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000006
Figure PCTCN2020113226-appb-000007
表7
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。下表8给出了可用于实施例4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 3.6600E-04 2.1440E-03 -4.4500E-03 5.9360E-03 -5.0752E-03 2.7330E-03 -9.1000E-04 1.6700E-04 -1.3000E-05
S2 -1.1480E-02 2.6370E-03 4.7790E-03 -9.5900E-03 9.8036E-03 -6.2200E-03 2.3640E-03 -4.9000E-04 4.2100E-05
S3 -5.0300E-03 8.8680E-03 6.3240E-03 -1.6830E-02 1.8842E-02 -1.2620E-02 5.1380E-03 -1.1500E-03 1.0900E-04
S4 3.3100E-03 1.0397E-02 -1.2800E-03 -1.6100E-03 6.8646E-05 2.3040E-03 -2.1600E-03 8.8100E-04 -1.4000E-04
S5 -2.2480E-02 9.2870E-03 -1.9220E-02 2.3989E-02 -2.1648E-02 1.3561E-02 -5.7500E-03 1.5740E-03 -2.1000E-04
S6 -3.3000E-02 1.8499E-02 -2.1690E-02 1.3852E-02 -1.0741E-03 -4.8100E-03 3.5390E-03 -1.0000E-03 1.0100E-04
S7 -3.3980E-02 1.3357E-02 -6.7600E-03 -1.0930E-02 2.0938E-02 -1.6260E-02 6.8240E-03 -1.4700E-03 1.2700E-04
S8 -3.1520E-02 1.2056E-02 -1.4200E-02 1.1278E-02 -7.3559E-03 3.4130E-03 -1.0100E-03 1.7100E-04 -1.2000E-05
S9 -4.5510E-02 1.0397E-02 -2.2200E-03 -7.2000E-04 4.3403E-04 -6.1000E-05 -1.1000E-05 4.0900E-06 -3.3000E-07
S10 -4.5290E-02 8.8000E-03 7.1100E-05 -1.1100E-03 4.7165E-04 -9.6000E-05 1.0700E-05 -6.3000E-07 1.5400E-08
S11 -1.0830E-02 -6.1700E-03 2.5250E-03 -7.1000E-04 1.2621E-04 -1.3000E-05 8.0300E-07 -2.6000E-08 3.5900E-10
S12 1.4286E-02 -1.0340E-02 2.8540E-03 -5.2000E-04 6.5758E-05 -5.6000E-06 2.9200E-07 -8.6000E-09 1.0900E-10
S13 -2.4820E-02 2.9630E-03 5.9900E-04 -1.6000E-04 1.6155E-05 -9.1000E-07 3.0500E-08 -5.6000E-10 4.4900E-12
S14 -1.7390E-02 2.3600E-03 -9.4000E-05 -1.9000E-05 3.0836E-06 -2.2000E-07 8.5200E-09 -1.8000E-10 1.4800E-12
表8
图8A示出了实施例4的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图8B示出了实施例4的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图8D示出了实施例4的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头能够实现良好的成像品质。
实施例5
以下参照图9至图10D描述根据本申请实施例5的光学成像镜头。图9示出了根据本申请实施例5的光学成像镜头的结构示意图。
如图9所示，光学成像镜头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为凹面，像侧面S6为凸面。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为凸面，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。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。
在本实施例中，光学成像镜头的总有效焦距f＝6.68mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.53mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.40mm，以及光学成像镜头的最大视场角FOV＝86.3°。
表9示出了实施例5的光学成像镜头的基本参数表，其中，曲率半径、厚度/距离和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000008
表9
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。下表10给出了可用于实施例5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 -6.7000E-05 2.7140E-03 -5.6465E-03 7.8040E-03 -6.9000E-03 3.8540E-03 -1.3200E-03 2.5100E-04 -2.0630E-05
S2 -1.2600E-02 2.5110E-03 1.1364E-02 -2.0940E-02 2.0026E-02 -1.1730E-02 4.1440E-03 -8.1000E-04 6.5802E-05
S3 -6.3800E-03 7.1680E-03 8.2171E-03 -1.8750E-02 2.0104E-02 -1.2770E-02 4.8850E-03 -1.0200E-03 8.8313E-05
S4 -1.1000E-04 6.7430E-03 -3.0460E-04 1.7240E-03 -7.9600E-03 1.1674E-02 -8.1200E-03 2.8600E-03 -4.0044E-04
S5 -1.5130E-02 -3.1000E-04 -1.1158E-02 2.5772E-02 -3.9800E-02 3.7235E-02 -2.0590E-02 6.2640E-03 -8.0397E-04
S6 -2.2420E-02 6.8910E-03 -1.1280E-02 9.3520E-03 -4.2700E-03 3.6900E-04 7.8700E-04 -3.4000E-04 4.3252E-05
S7 -3.3330E-02 2.4105E-02 -4.2637E-02 4.8498E-02 -3.5620E-02 1.6245E-02 -4.2800E-03 5.8900E-04 -3.2568E-05
S8 -2.9920E-02 9.4980E-03 -7.1521E-03 1.3150E-03 1.3250E-03 -1.1300E-03 3.8100E-04 -6.0000E-05 3.4973E-06
S9 -4.9630E-02 2.2279E-02 -1.1697E-02 4.1260E-03 -1.3100E-03 3.8000E-04 -9.0000E-05 1.3100E-05 -7.9935E-07
S10 -6.8220E-02 2.8191E-02 -1.0721E-02 3.2210E-03 -7.3000E-04 1.2100E-04 -1.3000E-05 8.3200E-07 -2.2371E-08
S11 -2.6470E-02 5.6700E-04 -1.4302E-04 -5.0000E-05 3.1300E-05 -5.2000E-06 3.9600E-07 -1.5000E-08 2.2658E-10
S12 2.0606E-02 -9.5100E-03 1.8718E-03 -2.4000E-04 2.1900E-05 -1.5000E-06 6.8700E-08 -1.8000E-09 2.1387E-11
S13 -2.5250E-02 2.8960E-03 4.5308E-04 -1.2000E-04 1.1200E-05 -5.7000E-07 1.6700E-08 -2.6000E-10 1.5701E-12
S14 -1.9760E-02 3.0130E-03 -4.1187E-04 4.4800E-05 -3.7000E-06 2.0800E-07 -7.2000E-09 1.3900E-10 -1.1315E-12
表10
图10A示出了实施例5的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图10B示出了实施例5的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图10D示出了实施例5的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头能够实现良好的成像品质。
实施例6
以下参照图11至图12D描述根据本申请实施例6的光学成像镜头。图11示出了根据本申请实施例6的光学成像镜头的结构示意图。
如图11所示，光学成像镜头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为凹面，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。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。
在本实施例中，光学成像镜头的总有效焦距f＝6.62mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.70mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.35mm，以及光学成像镜头的最大视场角FOV＝86.9°。
表11示出了实施例6的光学成像镜头的基本参数表，其中，曲率半径、厚度/距离和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000009
Figure PCTCN2020113226-appb-000010
表11
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。下表12给出了可用于实施例6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 1.1020E-03 -4.8634E-04 4.4400E-04 1.1100E-04 -4.4814E-04 2.4200E-04 -4.0000E-05 -7.7000E-06 2.0000E-06
S2 -1.0590E-02 -2.0924E-03 -8.3000E-04 3.6390E-03 -3.1921E-03 1.7530E-03 -7.3000E-04 1.9000E-04 -2.1000E-05
S3 -1.1970E-02 9.7352E-04 8.0600E-03 -8.3200E-03 9.3162E-03 -7.5100E-03 3.5160E-03 -8.7000E-04 9.0700E-05
S4 -5.3500E-03 4.8497E-04 2.3270E-02 -4.7440E-02 6.4198E-02 -5.5280E-02 2.8488E-02 -8.0400E-03 9.6300E-04
S5 -6.5700E-03 1.9418E-03 -3.4300E-03 -9.6300E-03 2.5530E-02 -2.8400E-02 1.6526E-02 -4.9800E-03 6.1600E-04
S6 -7.4880E-02 1.2848E-01 -1.7661E-01 1.7761E-01 -1.2371E-01 5.7925E-02 -1.7440E-02 3.0800E-03 -2.4000E-04
S7 -7.0990E-02 1.2139E-01 -1.7108E-01 1.6923E-01 -1.1500E-01 5.2448E-02 -1.5380E-02 2.6210E-03 -2.0000E-04
S8 -1.7670E-02 -3.6020E-03 6.0500E-03 -1.0290E-02 9.3465E-03 -5.0600E-03 1.6280E-03 -2.9000E-04 2.2700E-05
S9 -3.8180E-02 1.9919E-02 -2.2600E-02 1.8231E-02 -1.0905E-02 4.2770E-03 -1.0100E-03 1.3100E-04 -7.0000E-06
S10 -6.2450E-02 2.8931E-02 -1.7430E-02 8.7550E-03 -3.3659E-03 8.8800E-04 -1.4000E-04 1.2200E-05 -4.3000E-07
S11 -4.1500E-02 4.4006E-03 -1.0400E-03 2.7300E-04 -1.1312E-04 2.8900E-05 -3.6000E-06 2.1300E-07 -4.8000E-09
S12 -3.9000E-04 -9.1335E-03 3.8820E-03 -1.0500E-03 1.8456E-04 -2.0000E-05 1.3100E-06 -4.6000E-08 6.9200E-10
S13 -2.4630E-02 3.0311E-03 6.0700E-04 -1.6000E-04 1.6339E-05 -9.2000E-07 3.0200E-08 -5.5000E-10 4.2500E-12
S14 -2.2370E-02 4.0955E-03 -5.0000E-04 4.3300E-05 -2.7653E-06 1.2400E-07 -3.6000E-09 5.9300E-11 -4.3000E-13
表12
图12A示出了实施例6的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图12B示出了实施例6的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图12D示出了实施例6的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头能够实现良好的成像品质。
实施例7
以下参照图13至图14D描述根据本申请实施例7的光学成像镜头。图13示出了根据本申请实施例7的光学成像镜头的结构示意图。
如图13所示，光学成像镜头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具有负光焦度，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为凸面，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为凹面，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。
在本实施例中，光学成像镜头的总有效焦距f＝6.68mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.80mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.38mm，以及光学成像镜头的最大视场角FOV＝86.3°。
表13示出了实施例7的光学成像镜头的基本参数表，其中，曲率半径、厚度/距离和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000011
表13
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。下表14给出了可用于实施例7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 -1.1000E-04 3.8930E-03 -7.6579E-03 8.9460E-03 -6.7700E-03 3.1960E-03 -9.2000E-04 1.4700E-04 -9.7948E-06
S2 -9.2200E-03 3.0670E-03 2.6098E-03 -7.6800E-03 7.9640E-03 -4.8600E-03 1.7550E-03 -3.4000E-04 2.8142E-05
S3 -1.8400E-03 1.1007E-02 -1.8085E-04 -9.9300E-03 1.3593E-02 -9.5900E-03 3.9510E-03 -8.8000E-04 8.1853E-05
S4 4.7340E-03 8.3820E-03 3.7408E-03 -1.6450E-02 2.1978E-02 -1.6500E-02 7.4400E-03 -1.8500E-03 1.9922E-04
S5 -1.3600E-02 -1.3930E-02 3.0656E-02 -5.3430E-02 6.1308E-02 -4.6110E-02 2.1412E-02 -5.4900E-03 5.9327E-04
S6 -7.6200E-03 -1.9130E-02 3.4645E-02 -4.7850E-02 4.5706E-02 -2.8680E-02 1.1148E-02 -2.3700E-03 2.0788E-04
S7 -1.1870E-02 -1.3240E-02 2.8262E-02 -4.6010E-02 4.6141E-02 -2.8320E-02 1.0285E-02 -2.0000E-03 1.5975E-04
S8 -3.3960E-02 1.9633E-02 -2.2089E-02 1.6311E-02 -9.0100E-03 3.5000E-03 -9.0000E-04 1.3500E-04 -8.7111E-06
S9 -6.2200E-02 2.7113E-02 -1.5245E-02 6.0550E-03 -2.0900E-03 6.4500E-04 -1.6000E-04 2.3700E-05 -1.4973E-06
S10 -5.9340E-02 2.1791E-02 -7.9492E-03 2.1600E-03 -4.0000E-04 5.5600E-05 -5.6000E-06 3.5000E-07 -9.7295E-09
S11 -1.5670E-02 1.4340E-03 -2.2867E-04 -1.3000E-05 7.9000E-06 -9.1000E-07 4.9300E-08 -1.3000E-09 1.4532E-11
S12 6.7300E-03 -2.2500E-03 5.2063E-04 -1.1000E-04 1.4500E-05 -1.2000E-06 5.7200E-08 -1.5000E-09 1.6069E-11
S13 -1.9070E-02 1.9730E-03 3.3890E-04 -7.8000E-05 6.8500E-06 -3.3000E-07 9.5100E-09 -1.5000E-10 1.0054E-12
S14 -1.2680E-02 1.2930E-03 -4.9339E-05 -5.7000E-06 8.8300E-07 -5.5000E-08 1.8600E-09 -3.3000E-11 2.4059E-13
表14
图14A示出了实施例7的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图14B示出了实施例7的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图14D示出了实施例7的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头能够实现良好的成像品质。
实施例8
以下参照图15至图16D描述根据本申请实施例8的光学成像镜头。图15示出了根据本申请实施例8的光学成像镜头的结构示意图。
如图15所示，光学成像镜头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具有正光焦度，其物侧面S5为凸面，像侧面S6为凸面。第四透镜E4具有负光焦度，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为凸面，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为凹面，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。
在本实施例中，光学成像镜头的总有效焦距f＝6.69mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.79mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.36mm，以及光学成像镜头的最大视场角FOV＝86.1°。
表15示出了实施例8的光学成像镜头的基本参数表，其中，曲率半径、厚度和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000012
Figure PCTCN2020113226-appb-000013
表15
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。下表16给出了可用于实施例8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 -2.3700E-05 2.2633E-03 -4.6600E-03 5.5330E-03 -4.3483E-03 2.1580E-03 -6.7000E-04 1.1500E-04 -8.5832E-06
S2 -6.4090E-03 -1.0524E-06 2.6330E-03 -4.9700E-03 4.8307E-03 -2.8800E-03 1.0200E-03 -1.9000E-04 1.5310E-05
S3 -1.5710E-03 6.5863E-03 5.7900E-04 -4.2600E-03 5.2776E-03 -3.5900E-03 1.4580E-03 -3.2000E-04 2.7740E-05
S4 4.0811E-03 5.2099E-03 7.6980E-03 -1.8910E-02 2.4156E-02 -1.8780E-02 8.9190E-03 -2.3500E-03 2.6762E-04
S5 -1.2086E-02 -2.5973E-02 6.6332E-02 -1.1876E-01 1.3626E-01 -1.0020E-01 4.5360E-02 -1.1450E-02 1.2356E-03
S6 -7.1130E-03 -3.6831E-02 7.0646E-02 -9.7000E-02 8.8593E-02 -5.2270E-02 1.9109E-02 -3.8700E-03 3.2926E-04
S7 -9.5010E-03 -2.3072E-02 3.5336E-02 -4.4830E-02 3.8777E-02 -2.1710E-02 7.5100E-03 -1.4300E-03 1.1280E-04
S8 -2.8989E-02 1.0858E-02 -1.3100E-02 9.8750E-03 -5.9275E-03 2.5510E-03 -7.2000E-04 1.1600E-04 -7.9817E-06
S9 -5.5752E-02 1.9632E-02 -9.7300E-03 3.3610E-03 -1.2257E-03 4.3500E-04 -1.2000E-04 1.8300E-05 -1.1739E-06
S10 -5.2990E-02 1.5783E-02 -4.3800E-03 8.1800E-04 -9.3670E-05 1.1800E-05 -1.9000E-06 1.7800E-07 -6.3646E-09
S11 -1.2336E-02 -1.1733E-03 6.3000E-04 -1.9000E-04 3.0859E-05 -2.7000E-06 1.3500E-07 -3.5000E-09 3.7067E-11
S12 1.3353E-02 -5.7447E-03 1.4620E-03 -2.6000E-04 3.1829E-05 -2.4000E-06 1.1400E-07 -2.9000E-09 3.2379E-11
S13 -2.0701E-02 2.1920E-03 3.8500E-04 -9.2000E-05 8.3282E-06 -4.2000E-07 1.2300E-08 -2.0000E-10 1.3856E-12
S14 -1.4880E-02 1.9836E-03 -1.7000E-04 7.9900E-06 -1.1866E-07 -8.1000E-09 5.2900E-10 -1.2000E-11 1.0400E-13
表16
图16A示出了实施例8的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图16B示出了实施例8的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图16D示出了实施例8的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头能够实现良好的成像品质。
实施例9
以下参照图17至图18D描述根据本申请实施例9的光学成像镜头。图17示出了根据本申请实施例9的光学成像镜头的结构示意图。
如图17所示，光学成像镜头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为凹面，像侧面S6为凹面。第四透镜E4具有负光焦度，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为凸面，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为凹面，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。
在本实施例中，光学成像镜头的总有效焦距f＝6.68mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.80mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.30mm，以及光学成像镜头的最大视场角FOV＝85.5°。
表17示出了实施例9的光学成像镜头的基本参数表，其中，曲率半径、厚度和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000014
表17
在实施例9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。下表18给出了可用于实施例9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 9.2090E-06 3.2160E-03 -6.4234E-03 7.5550E-03 -5.7659E-03 2.7410E-03 -8.0000E-04 1.2700E-04 -8.5880E-06
S2 -8.8580E-03 1.9670E-03 2.8455E-03 -6.7500E-03 6.7036E-03 -4.0300E-03 1.4410E-03 -2.8000E-04 2.2675E-05
S3 -2.8960E-03 9.3290E-03 1.6016E-03 -1.0070E-02 1.2504E-02 -8.5100E-03 3.4280E-03 -7.5000E-04 6.8585E-05
S4 4.2686E-03 8.3290E-03 1.5168E-03 -8.8000E-03 1.1230E-02 -8.0000E-03 3.5210E-03 -8.7000E-04 9.7748E-05
S5 -1.3898E-02 -1.5810E-02 3.5896E-02 -5.8800E-02 6.4241E-02 -4.6510E-02 2.1004E-02 -5.2900E-03 5.6745E-04
S6 -7.7900E-03 -2.5030E-02 4.3115E-02 -5.4040E-02 4.8048E-02 -2.8650E-02 1.0691E-02 -2.2000E-03 1.8800E-04
S7 -9.5780E-03 -1.7960E-02 3.0398E-02 -4.2840E-02 4.0766E-02 -2.4500E-02 8.8080E-03 -1.7000E-03 1.3519E-04
S8 -3.4764E-02 1.9721E-02 -1.9723E-02 1.2282E-02 -5.5589E-03 1.7880E-03 -4.0000E-04 5.5000E-05 -3.3067E-06
S9 -6.3880E-02 2.5443E-02 -1.1426E-02 2.0300E-03 3.8374E-04 -3.1000E-04 6.9300E-05 -6.8000E-06 2.7696E-07
S10 -5.7105E-02 1.9231E-02 -6.0829E-03 1.2690E-03 -1.3091E-04 3.9100E-06 2.5700E-07 -1.4000E-08 -5.3234E-11
S11 -1.3650E-02 3.3700E-06 2.2136E-04 -9.4000E-05 1.6681E-05 -1.5000E-06 7.1600E-08 -1.8000E-09 1.8461E-11
S12 1.0184E-02 -4.4800E-03 1.1388E-03 -2.1000E-04 2.4941E-05 -1.9000E-06 8.6600E-08 -2.2000E-09 2.3367E-11
S13 -1.9170E-02 2.0000E-03 3.4374E-04 -8.0000E-05 7.0098E-06 -3.4000E-07 9.7800E-09 -1.5000E-10 1.0312E-12
S14 -1.3533E-02 1.6030E-03 -1.0258E-04 2.6500E-07 4.3980E-07 -3.4000E-08 1.2500E-09 -2.3000E-11 1.7246E-13
表18
图18A示出了实施例9的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图18B示出了实施例9的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图18D示出了实施例9的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头能够实现良好的成像品质。
实施例10
以下参照图19至图20D描述根据本申请实施例10的光学成像镜头。图19示出了根据本申请实施例10的光学成像镜头的结构示意图。
如图19所示，光学成像镜头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为凹面，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为凸面，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为凹面，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。
在本实施例中，光学成像镜头的总有效焦距f＝6.69mm，从第一透镜E1的物侧面S1至成像面S17在光轴上的距离TTL＝7.77mm，成像面S17上有效像素区域对角线长的一半ImgH＝6.43mm，以及光学成像镜头的最大视场角FOV＝86.9°。
表19示出了实施例10的光学成像镜头的基本参数表，其中，曲率半径、厚度和焦距的单位均为毫米(mm)。
Figure PCTCN2020113226-appb-000015
Figure PCTCN2020113226-appb-000016
表19
在实施例10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。下表20给出了可用于实施例10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 5.3300E-05 2.2564E-03 -4.8101E-03 6.1170E-03 -4.9901E-03 2.5550E-03 -8.1000E-04 1.4100E-04 -1.0698E-05
S2 -7.7940E-03 1.8252E-03 1.3282E-03 -3.2800E-03 3.2682E-03 -1.9900E-03 7.1100E-04 -1.4000E-04 1.0438E-05
S3 -3.3600E-03 6.9794E-03 1.5171E-03 -6.0300E-03 6.9237E-03 -4.5600E-03 1.8020E-03 -3.8000E-04 3.3552E-05
S4 2.7654E-03 6.8010E-03 1.9664E-03 -6.7400E-03 7.9786E-03 -5.4400E-03 2.2580E-03 -5.1000E-04 5.0150E-05
S5 -1.9251E-02 -1.6863E-02 4.1352E-02 -6.8110E-02 7.1806E-02 -4.9030E-02 2.0810E-02 -4.9400E-03 5.0321E-04
S6 -1.4851E-02 -2.4931E-02 4.6760E-02 -6.0780E-02 5.2702E-02 -2.9660E-02 1.0419E-02 -2.0300E-03 1.6601E-04
S7 -6.8220E-03 -2.1603E-02 3.1014E-02 -3.7090E-02 3.0130E-02 -1.5900E-02 5.2050E-03 -9.4000E-04 7.0549E-05
S8 -2.2637E-02 2.0979E-03 -1.6868E-03 -5.6000E-04 7.1495E-04 -2.8000E-04 5.5300E-05 -5.0000E-06 2.6583E-07
S9 -4.6893E-02 8.4680E-03 1.1470E-03 -4.5800E-03 2.9334E-03 -1.0400E-03 2.1800E-04 -2.6000E-05 1.3333E-06
S10 -4.3970E-02 8.9001E-03 -2.7902E-04 -1.0200E-03 4.7013E-04 -9.9000E-05 1.1400E-05 -6.9000E-07 1.7620E-08
S11 -9.1970E-03 -3.3033E-03 1.3496E-03 -3.5000E-04 5.3618E-05 -4.8000E-06 2.4200E-07 -6.6000E-09 7.5349E-11
S12 1.5960E-02 -7.8715E-03 2.1478E-03 -3.9000E-04 4.7784E-05 -3.7000E-06 1.7600E-07 -4.7000E-09 5.3272E-11
S13 -2.2003E-02 2.3989E-03 4.3235E-04 -1.1000E-04 9.9402E-06 -5.1000E-07 1.5600E-08 -2.6000E-10 1.8682E-12
S14 -1.6612E-02 2.6149E-03 -2.8589E-04 2.1600E-05 -1.2163E-06 4.9800E-08 -1.3000E-09 2.0700E-11 -1.3995E-13
表20
图20A示出了实施例10的光学成像镜头的轴上色差曲线，其表示不同波长的光线经由镜头后的会聚焦点偏离。图20B示出了实施例10的光学成像镜头的象散曲线，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的光学成像镜头的畸变曲线，其表示不同像高对应的畸变大小值。图20D示出了实施例10的光学成像镜头的倍率色差曲线，其表示光线经由镜头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头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21中所示的关系。
条件式/实施例 1 2 3 4 5 6 7 8 9 10
ImgH(mm) 6.45 6.44 6.42 6.41 6.40 6.35 6.38 6.36 6.30 6.43
N1+N2 3.52 3.52 3.52 3.52 3.47 3.51 3.42 3.50 3.38 3.50
TTL/ImgH 1.16 1.17 1.17 1.17 1.18 1.21 1.22 1.22 1.24 1.21
V1+V2 82.04 82.04 82.04 82.04 78.40 80.06 86.75 81.86 85.65 81.86
f/(f1+f6+f7) 0.79 0.79 0.80 0.69 0.75 0.52 0.91 0.84 0.85 0.75
(R1+R2)/(R3+R4) 0.69 0.65 0.52 0.56 0.76 0.39 0.50 0.56 0.50 0.65
f7/(R13-R14) 0.42 0.43 0.44 0.44 0.46 0.33 0.46 0.45 0.45 0.45
FOV(°) 87.5 87.5 87.2 87.1 86.3 86.9 86.3 86.1 85.5 86.9
(T45+T56+T67)/(CT5+CT6+CT7) 1.00 0.99 0.97 1.01 1.04 1.13 0.92 0.84 0.93 0.90
(DT11+DT12)/ImgH×5 2.51 2.59 2.53 2.53 2.55 2.53 2.61 2.61 2.64 2.58
表21
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 (21)

  1. 一种光学成像镜头，其特征在于，沿着光轴由物侧至像侧依序包括：
    具有正光焦度的第一透镜，其物侧面为凸面，像侧面为凹面；
    具有光焦度的第二透镜；
    具有光焦度的第三透镜；
    具有光焦度的第四透镜；
    具有光焦度的第五透镜；
    具有正光焦度的第六透镜；以及
    具有负光焦度的第七透镜，其物侧面为凹面，像侧面为凹面；
    其中，所述第一透镜的物侧面的最大有效半径DT11、所述第一透镜的像侧面的最大有效半径DT12以及所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：
    2.4<(DT11+DT12)/ImgH×5<2.7。
  2. 根据权利要求1所述的光学成像镜头，其特征在于，所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：ImgH>6.2mm。
  3. 根据权利要求1所述的光学成像镜头，其特征在于，所述第一透镜的折射率N1与所述第二透镜的折射率N2满足：
    N1+N2>3.3。
  4. 根据权利要求1所述的光学成像镜头，其特征在于，所述第一透镜的物侧面至所述光学成像镜头的成像面在所述光轴上的距离TTL与所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：
    TTL/ImgH<1.25。
  5. 根据权利要求1所述的光学成像镜头，其特征在于，所述第一透镜的阿贝数V1与所述第二透镜的阿贝数V2满足：
    78<V1+V2<88。
  6. 根据权利要求1所述的光学成像镜头，其特征在于，所述光学成像镜头的总有效焦距f、所述第一透镜的有效焦距f1、与所述第六透镜的有效焦距f6以及所述第七透镜的有效焦距f7满足：
    0.5<f/(f1+f6+f7)<1.0。
  7. 根据权利要求1所述的光学成像镜头，其特征在于，所述第一透镜的物侧面的曲率半径R1、所述第一透镜的像侧面的曲率半径R2、所述第二透镜的物侧面的曲率半径R3与所述第二透镜的像侧面的曲率半径R4满足：
    0.3<(R1+R2)/(R3+R4)<0.8。
  8. 根据权利要求1所述的光学成像镜头，其特征在于，所述第七透镜的有效焦距f7、所述第七透镜的物侧面的曲率半径R13与所述第七透镜的像侧面的曲率半径R14满足：
    0.2<f7/(R13-R14)<0.6。
  9. 根据权利要求1所述的光学成像镜头，其特征在于，所述光学成像镜头的最大视场角FOV满足：
    82°<FOV<88°。
  10. 根据权利要求1所述的光学成像镜头，其特征在于，所述第四透镜和所述第五透镜在所述光轴上的间隔距离T45、所述第五透镜和所述第六透镜在所述光轴上的间隔距离T56、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、所述第五透镜在所述光轴上的中心厚度CT5、所述第六透镜在所述光轴上的中心厚度CT6以及所述第七透镜在所述光轴上的中心厚度CT7满足：
    0.8<(T45+T56+T67)/(CT5+CT6+CT7)<1.2。
  11. 根据权利要求1所述的光学成像镜头，其特征在于，所述第一透镜至所述第七透镜中至少有一片透镜为玻璃透镜。
  12. 一种光学成像镜头，其特征在于，沿着光轴由物侧至像侧依序包括：
    具有正光焦度的第一透镜，其物侧面为凸面，像侧面为凹面；
    具有光焦度的第二透镜；
    具有光焦度的第三透镜；
    具有光焦度的第四透镜；
    具有光焦度的第五透镜；
    具有正光焦度的第六透镜；以及
    具有负光焦度的第七透镜，其物侧面为凹面，像侧面为凹面；
    其中，所述第一透镜的阿贝数V1与所述第二透镜的阿贝数V2满足：
    78<V1+V2<88。
  13. 根据权利要求12所述的光学成像镜头，其特征在于，所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：ImgH>6.2mm。
  14. 根据权利要求12所述的光学成像镜头，其特征在于，所述第一透镜的折射率N1与所述第二透镜的折射率N2满足：
    N1+N2>3.3。
  15. 根据权利要求12所述的光学成像镜头，其特征在于，所述第一透镜的物侧面至所述光学成像镜头的成像面在所述光轴上的距离TTL与所述光学成像镜头的成像面上有效像素区域的对角线长的一半ImgH满足：
    TTL/ImgH<1.25。
  16. 根据权利要求12所述的光学成像镜头，其特征在于，所述光学成像镜头的总有效焦距f、所述第一透镜的有效焦距f1、与所述第六透镜的有效焦距f6以及所述第七透镜的有效焦距f7满足：
    0.5<f/(f1+f6+f7)<1.0。
  17. 根据权利要求12所述的光学成像镜头，其特征在于，所述第一透镜的物侧面的曲率半径R1、所述第一透镜的像侧面的曲率半径R2以及所述第二透镜的物侧面的曲率半径R3与所述第二透镜的像侧面的曲率半径R4满足：
    0.3<(R1+R2)/(R3+R4)<0.8。
  18. 根据权利要求12所述的光学成像镜头，其特征在于，所述第七透镜的有效焦距f7、所述第七透镜的物侧面的曲率半径R13与所述第七透镜的像侧面的曲率半径R14满足：
    0.2<f7/(R13-R14)<0.6。
  19. 根据权利要求12所述的光学成像镜头，其特征在于，所述光学成像镜头的最大视场角FOV满足：
    82°<FOV<88°。
  20. 根据权利要求12所述的光学成像镜头，其特征在于，所述第四透镜和所述第五透镜在所述光轴上的间隔距离T45、所述第五透镜和所述第六透镜在所述光轴上的间隔距离T56、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、所述第五透镜在所述光轴上的中心厚度CT5、所述第六透镜在所述光轴上的中心厚度CT6以及所述第七透镜在所述光轴上的中心厚度CT7满足：
    0.8<(T45+T56+T67)/(CT5+CT6+CT7)<1.2。
  21. 根据权利要求12所述的光学成像镜头，其特征在于，所述第一透镜至所述第七透镜中至少有一片透镜为玻璃透镜。
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