WO2018103250A1 - 摄像镜头及摄像装置 - Google Patents

摄像镜头及摄像装置 Download PDF

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Publication number
WO2018103250A1
WO2018103250A1 PCT/CN2017/081195 CN2017081195W WO2018103250A1 WO 2018103250 A1 WO2018103250 A1 WO 2018103250A1 CN 2017081195 W CN2017081195 W CN 2017081195W WO 2018103250 A1 WO2018103250 A1 WO 2018103250A1
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Prior art keywords
lens
image pickup
imaging
image
aspherical
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Application number
PCT/CN2017/081195
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English (en)
French (fr)
Inventor
张凯元
闻人建科
李明
Original Assignee
浙江舜宇光学有限公司
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Priority to US15/766,288 priority Critical patent/US10761289B2/en
Publication of WO2018103250A1 publication Critical patent/WO2018103250A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

Definitions

  • the present application relates to an imaging lens and an imaging device equipped with the imaging lens.
  • Image information is an important category of various information that humans can acquire, and optical lenses are almost the only entry for image information acquisition.
  • the quality of the image is mainly achieved by increasing the sampling density of the pixels of the photosensitive element, so accordingly it is necessary to increase the aperture of the system and increase the transfer function of each field of view of the system to achieve the above requirements.
  • the amount of information acquired by the optical system can be represented by the optical invariants of the system, while the optical invariants of the system increase linearly with the field of view of the optical system.
  • the main means is to increase the field of view of the optical system.
  • the optical system At present, with the development of mobile phone lenses, consumers are increasingly demanding self-timer, and it is necessary to develop a wide-angle lens with a large field of view suitable for self-timer. Due to the height limitation of the mobile phone lens, the length of the optical system should be compressed as much as possible while taking into account the high resolution and high yield of the large field of view.
  • the present application provides a technical solution that satisfies at least the above requirements.
  • the application provides an imaging lens.
  • the imaging lens includes, in order from the object side to the image side along the optical axis, a first lens having a negative refractive power and a concave side thereof; a second lens having a power and a concave side of the image side; Third lens with a concave side and a convex side of the image side; a fourth lens having a negative power and its object.
  • the side surface is a concave surface; the fifth lens having positive refractive power and the object side surface is a concave surface; and the image side surface is a convex surface; and a sixth lens having a power.
  • the imaging lens further includes an electronic photosensitive element disposed on the imaging surface along the optical axis.
  • the on-axis distance TTL of the object side of the first lens to the imaging surface is half of the diagonal length ImgH of the effective pixel area of the photosensitive element: 1.5 ⁇ TTL / ImgH ⁇ 1.7, for example, 1.583 ⁇ TTL / ImgH ⁇ 1.660.
  • the imaging lens provided by the present application includes, in order from the object side to the image side along the optical axis, a first lens having a negative refractive power and a concave side of the object side surface, and a second lens having a concave side on the image side; a lens having a positive refractive power, a concave side of the object side, a convex surface like the side surface, a fourth lens having a negative refractive power and a concave side of the object surface, and a fifth lens having a positive refractive power, the object side being a concave surface, the image side a convex surface; and a sixth lens having a positive power or a negative power, wherein an axial distance between the third lens and the fourth lens is T34 and the fifth lens and the sixth The distance between the on-axis spacings T56 between the lenses satisfies: 0.5 ⁇ T34 / T56 ⁇ 1.2, for example, 0.633 ⁇ T34 /
  • half of the maximum angle of view of the above-described imaging lens HFOV can be set, for example, to HFOV > 50°.
  • the center thickness CT2 of the second lens on the optical axis and the center thickness CT3 of the third lens on the optical axis may satisfy: 1 ⁇ CT2/CT3 ⁇ 1.5, for example, 1.028 ⁇ CT2/CT3 ⁇ 1.424.
  • the effective focal length f4 of the fourth lens and the total effective focal length f of the imaging lens may satisfy: -2 ⁇ f4 / f ⁇ -1, for example, -1.773 ⁇ f4 / f ⁇ -1.336.
  • the effective focal length f3 of the third lens and the effective focal length f5 of the fifth lens may satisfy: 0.4 ⁇ f3 / f5 ⁇ 1, for example, 0.458 ⁇ f3 / f5 ⁇ 0.915.
  • the on-axis distance SAG51 between the intersection of the object side surface and the optical axis of the fifth lens to the effective radius vertex of the object side surface of the fifth lens and the axial distance from the object side surface of the first lens to the imaging surface are TTL It can be satisfied that: -0.2 ⁇ SAG51/TTL ⁇ -0.1, for example, -0.144 ⁇ SAG51/TTL ⁇ -0.119.
  • the radius of curvature R9 of the object side surface of the fifth lens and the radius of curvature R10 of the image side surface of the fifth lens may satisfy: 1 ⁇ R9/R10 ⁇ 1.5, for example, 1.166 ⁇ R9/R10 ⁇ 1.419 .
  • the on-axis spacing distance T34 between the third lens and the fourth lens and the on-axis spacing distance T56 between the fifth lens and the sixth lens may satisfy: 0.5 ⁇ T34/T56 ⁇ 1.2 For example, 0.633 ⁇ T34 / T56 ⁇ 1.118.
  • the effective radius DT11 of the object side of the first lens and the effective radius DT52 of the image side of the fifth lens may satisfy: 0.5 ⁇ DT11/DT52 ⁇ 1.2, for example, 0.608 ⁇ DT11/DT52 ⁇ 1.150.
  • the present application provides an image pickup apparatus equipped with the above-described image pickup lens.
  • the present application employs a plurality of (for example, six) plastic aspherical surfaces.
  • FIG. 1 is a schematic structural view showing an image pickup lens according to Embodiment 1 of the present application.
  • FIG. 2A shows an axial chromatic aberration curve of the imaging lens of Embodiment 1;
  • FIG. 3 is a schematic structural view showing an image pickup lens according to Embodiment 2 of the present application.
  • 4C shows a magnification chromatic aberration curve of the imaging lens of Embodiment 2;
  • FIG. 5 is a schematic structural view showing an image pickup lens according to Embodiment 3 of the present application.
  • 6A shows an axial chromatic aberration curve of the imaging lens of Embodiment 3.
  • 6B shows an astigmatism curve of the imaging lens of Embodiment 3.
  • 6C shows a magnification chromatic aberration curve of the imaging lens of Embodiment 3.
  • FIG. 7 is a schematic structural view showing an image pickup lens according to Embodiment 4 of the present application.
  • 8C is a magnification chromatic aberration curve of the image pickup lens of Embodiment 4.
  • FIG. 9 is a schematic structural view showing an image pickup lens according to Embodiment 5 of the present application.
  • FIG. 10A is a view showing an axial chromatic aberration curve of the imaging lens of Embodiment 5; FIG.
  • FIG. 10B shows an astigmatism curve of the image pickup lens of Embodiment 5;
  • FIG. 10C is a graph showing a magnification chromatic aberration curve of the image pickup lens of Embodiment 5; FIG.
  • FIG. 11 is a schematic structural view showing an image pickup lens according to Embodiment 6 of the present application.
  • FIG. 12A is a view showing an axial chromatic aberration curve of the image pickup lens of Embodiment 6; FIG.
  • FIG. 13 is a schematic structural view showing an image pickup lens according to Embodiment 7 of the present application.
  • FIG. 15 is a schematic structural view showing an image pickup lens according to Embodiment 8 of the present application.
  • 16A shows an axial chromatic aberration curve of the image pickup lens of Embodiment 8.
  • 16B shows an astigmatism curve of the image pickup lens of Embodiment 8.
  • 16C shows a magnification chromatic aberration curve of the image pickup lens of Embodiment 8.
  • first, second, 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 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. which is, The shape of the spherical or aspherical surface is not limited to the spherical or aspherical shape shown in the drawings.
  • the drawings are only examples and not strictly drawn to scale.
  • the paraxial region refers to a region near the optical axis.
  • the first lens is the lens closest to the object and the sixth lens is the lens closest to the photosensitive element.
  • 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.
  • the image pickup lens has a total effective focal length f, and may include a first lens, a plurality of subsequent lenses, and a photosensitive member which are sequentially arranged from the object side to the image side along the optical axis.
  • the first lens may have a negative power and its object side may be a concave surface.
  • the distance between the TTL of the first lens along the optical axis from the side of the object to the imaging surface, and the diagonal length of the effective pixel area of the electronic photosensitive element, ImgH, can be satisfied: 1.5 ⁇ TTL / ImgH ⁇ 1.7, for example, 1.583 ⁇ TTL /ImgH ⁇ 1.660.
  • the plurality of subsequent lenses may include second and third lenses arranged in sequence along the optical axis from the image side of the first lens.
  • the image side of the second lens may be a concave surface.
  • the third lens may have positive refractive power and an effective focal length of f3, the object side may be concave and its image side may be convex.
  • the thickness of each lens can be optimized.
  • the center thickness CT2 of the second lens on the optical axis and the center thickness CT3 of the third lens on the optical axis may satisfy: 1 ⁇ CT2/CT3 ⁇ 1.5, for example, 1.028 ⁇ CT2/CT3 ⁇ 1.424.
  • the plurality of subsequent lenses may further include a fourth lens disposed on an image side of the third lens.
  • the on-axis separation distance between the third lens and the fourth lens may be set to T34.
  • the fourth lens may have a negative power and an effective focal length of f4, and the object side may be a concave surface.
  • the effective focal length of the fourth lens is f4 and the total effective focal length f of the imaging lens can satisfy: -2 ⁇ f4 / f ⁇ -1, for example, -1.773 ⁇ f4 / f ⁇ -1.336.
  • spherical aberration is one of the most important factors limiting lens resolution. In the present application, by configuring the fourth lens to assume a certain negative power, the spherical aberration can be effectively corrected. Thereby improving the resolution of the camera lens.
  • the plurality of subsequent lenses may further include fifth and sixth lenses arranged in order from the image side of the third lens along the optical axis.
  • the on-axis spacing distance between the lenses can also be optimized.
  • the on-axis distance T34 between the third lens and the fourth lens and the on-axis distance T56 between the fifth lens and the sixth lens may satisfy: 0.5 ⁇ T34/T56 ⁇ 1.2, for example, 0.633 ⁇ T34/T56 ⁇ 1.118.
  • the fifth lens may have a positive power and an effective focal length of f5, the object side may be a concave surface and the image side may be a convex surface.
  • the effective focal length f5 of the fifth lens and the effective focal length f3 of the third lens may satisfy 0.4 ⁇ f3/f5 ⁇ 1, for example, 0.458 ⁇ f3/f5 ⁇ 0.915, so that the light can be smoothly deflected to the imaging surface and balanced. Aberrations effectively improve image quality.
  • the on-axis distance SAG51 between the intersection of the side of the fifth lens object and the optical axis to the apex of the effective radius of the side of the fifth lens object and the side of the first lens object to the imaging can satisfy: -0.2 ⁇ SAG51/TTL ⁇ -0.1, for example, -0.144 ⁇ SAG51/TTL ⁇ -0.119.
  • the spherical aberration of the fifth lens can be corrected by appropriately setting the radius of curvature R9 of the side surface of the fifth lens and the radius of curvature R10 of the side surface of the fifth lens image, thereby effectively ensuring the imaging quality of the imaging lens.
  • the radius of curvature R9 of the side surface of the fifth lens object and the radius of curvature R10 of the side surface of the fifth lens image may satisfy 1 ⁇ R9 / R10 ⁇ 1.5, for example, 1.166 ⁇ R9 / R10 ⁇ 1.419.
  • the first lens and the fifth lens may be disposed such that 0.5 ⁇ DT11/DT52 ⁇ 1.2 is satisfied between the effective radius DT11 of the first lens object side and the effective radius DT52 of the fifth lens image side, for example, 0.608 ⁇ DT11 /DT52 ⁇ 1.150.
  • the half HFOV of the maximum angle of view of the camera lens of the present application can also be set to: HFOV>50°, thereby effectively increasing the angle of view of the camera lens by properly distributing the power and surface of each lens. In order to ensure the miniaturization of the lens and improve the image quality.
  • the image pickup lens according to the above embodiment of the present application may employ a plurality of lenses, such as the six sheets described above.
  • the viewing angle of the imaging lens can be effectively increased, the lens can be miniaturized and the imaging quality can be improved, thereby making the imaging lens more favorable for production and processing. And it can be applied to portable electronic products.
  • at least one of the mirror faces of each lens is an aspherical mirror.
  • Aspherical lenses are characterized by a continuous change in curvature from the center of the lens to the periphery.
  • the aspherical lens Unlike a spherical lens having a certain curvature from the center of the lens to the periphery, the aspherical lens has a better curvature radius characteristic, has the advantages of improving distortion and improving astigmatic aberration, and can make the field of view larger and more realistic. With an aspherical lens, the aberrations that occur during imaging can be eliminated as much as possible, improving image quality.
  • the number of components of the lens can be varied to achieve the various results and advantages described below without departing from the technical solutions claimed herein.
  • the image pickup lens is not limited to including six lenses. If needed, The camera lens can also include other numbers of lenses.
  • Embodiment 1 of the image pickup lens of the above-described embodiment mode of the present application will be described below with reference to FIGS. 1 to 2C.
  • the first embodiment of the image pickup lens includes a first lens L1 having an object side surface S1 and an image side surface S2, a second lens L2 having an object side surface S3 and an image side surface S4, and an object side surface S5 and an image side surface S6.
  • the imaging lens may further include a diaphragm (not shown) and a filter L7 having an object side S13 and an image side surface S14 for filtering out the infrared light.
  • the aperture STO can also be set to mediate the amount of light entering. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
  • the effective focal lengths f1 to f6 of the respective lenses in Embodiment 1 are shown in Table 1 below.
  • f3/f5 0.799 may be satisfied between the effective focal length f3 of the third lens L3 and the effective focal length f5 of the fifth lens L5.
  • Table 2 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this embodiment.
  • Table 3 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 16 and A 18 of the respective aspheric surfaces S1 - S12 which can be used for the respective aspherical lenses in this embodiment.
  • CT2/CT3 1.028 is satisfied between the center thickness CT2 of the second lens L2 on the optical axis and the center thickness CT3 of the third lens L3 on the optical axis.
  • R9/R10 1.370 is satisfied between the radius of curvature R9 of the fifth lens object side surface S9 and the radius of curvature R10 of the fifth lens image side surface S10.
  • 2A shows an axial chromatic aberration curve of the imaging lens of Embodiment 1, which indicates that light beams of different wavelengths are deviated from a focus point after passing through the optical system.
  • 2B shows an astigmatism curve of the imaging lens of Embodiment 1, which shows meridional field curvature and sagittal image plane curvature.
  • 2C shows a magnification chromatic aberration curve of the imaging lens of Embodiment 1, which shows a deviation of different image heights on the imaging plane after the light passes through the imaging lens.
  • the imaging lens given in Embodiment 1 can achieve good imaging quality.
  • Embodiment 2 of the above-described image pickup lens of the present application will be described below with reference to FIGS. 3 to 4C.
  • the imaging lens described in the following embodiments is the same as the imaging lens described in Embodiment 1. For the sake of brevity, a description similar to that of Embodiment 1 will be omitted.
  • FIG. 3 is a block diagram showing the structure of an image pickup lens according to Embodiment 2 of the present application.
  • the imaging lens according to Embodiment 2 includes first to sixth lenses L1 to L6 having an object side and an image side, respectively.
  • the effective focal lengths f1 to f6 of the respective lenses in Embodiment 2 are shown in Table 4 below.
  • f3/f5 0.679 can be satisfied between the effective focal length f3 of the third lens L3 and the effective focal length f5 of the fifth lens L5.
  • Table 5 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this embodiment.
  • Table 6 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 16 and A 18 of the respective aspheric surfaces S1 - S12 which can be used for the respective aspherical lenses in this embodiment.
  • 4A shows an axial chromatic aberration curve of the imaging lens of Embodiment 2, which shows that light rays of different wavelengths are deviated from a focus point after passing through the optical system.
  • 4B shows an astigmatism curve of the imaging lens of Embodiment 2, which shows meridional field curvature and sagittal image plane curvature.
  • 4C shows a magnification chromatic aberration curve of the imaging lens of Embodiment 2, which shows deviations of different image heights on the imaging plane after the light passes through the imaging lens.
  • the imaging lens given in Embodiment 2 can achieve good imaging quality.
  • FIG. 5 is a block diagram showing the structure of an image pickup lens according to Embodiment 3 of the present application.
  • the imaging lens according to Embodiment 3 includes first to sixth lenses L1 to L6 each having an object side and an image side.
  • the effective focal lengths f1 to f6 of the respective lenses in Embodiment 3 are shown in Table 7 below.
  • Table 8 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this embodiment.
  • Table 9 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 16 and A 18 of the respective aspherical surfaces S1 - S12 of the respective aspherical lenses usable in this embodiment.
  • Fig. 6A shows an axial chromatic aberration curve of the imaging lens of Embodiment 3, which shows that the light of different wavelengths is deviated from the focus point after passing through the optical system.
  • Fig. 6B shows an astigmatism curve of the image pickup lens of Embodiment 3, which shows meridional field curvature and sagittal image plane curvature.
  • 6C shows a magnification chromatic aberration curve of the imaging lens of Embodiment 3, which shows deviations of different image heights on the imaging surface after the light passes through the imaging lens.
  • the imaging lens given in Embodiment 3 can achieve good imaging quality.
  • FIG. 7 is a block diagram showing the structure of an image pickup lens according to Embodiment 4 of the present application.
  • the imaging lens according to Embodiment 4 includes first to sixth lenses L1 to L6 each having an object side and an image side.
  • the effective focal lengths f1 to f6 of the respective lenses in Embodiment 4 are shown in Table 10 below.
  • Table 11 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this embodiment.
  • Table 12 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 16 and A 18 of the respective aspheric surfaces S1 to S12 which can be used for the respective aspherical lenses in this embodiment.
  • DT11 / DT52 1.057 is satisfied between the effective radius DT11 of the first lens object side S1 and the effective radius DT52 of the fifth lens image side surface S10.
  • Fig. 8A shows an axial chromatic aberration curve of the imaging lens of Embodiment 4, which shows that the light of different wavelengths is deviated from the focus point after passing through the optical system.
  • Fig. 8B shows an astigmatism curve of the image pickup lens of Embodiment 4, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 8C is a graph showing the magnification chromatic aberration curve of the imaging lens of Embodiment 4, which shows the deviation of the different image heights on the imaging plane after the light rays pass through the imaging lens. 8A to 8C, the imaging lens given in Embodiment 4 can achieve good imaging quality.
  • FIG. 9 is a block diagram showing the structure of an image pickup lens according to Embodiment 5 of the present application.
  • the imaging lens according to Embodiment 5 includes first to sixth lenses L1 to L6 each having an object side and an image side.
  • the effective focal lengths f1 to f6 of the respective lenses in Embodiment 5, and the imaging are shown in Table 13 below.
  • f3/f5 0.786 can be satisfied between the effective focal length f3 of the third lens L3 and the effective focal length f5 of the fifth lens L5.
  • Table 14 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this embodiment.
  • Table 15 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 16 and A 18 of the respective aspheric surfaces S1 - S12 which can be used for the respective aspherical lenses in this embodiment.
  • Fig. 10A shows an axial chromatic aberration curve of the imaging lens of Embodiment 5, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical system.
  • Fig. 10B shows an astigmatism curve of the imaging lens of Embodiment 5, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 10C is a graph showing the chromatic aberration of magnification of the imaging lens of Embodiment 5, which shows the deviation of the different image heights on the imaging plane after the light passes through the imaging lens. 10A to 10C, the imaging lens given in Embodiment 5 can achieve good imaging quality.
  • FIG. 11 is a block diagram showing the structure of an image pickup lens according to Embodiment 6 of the present application.
  • the imaging lens according to Embodiment 6 includes first having an object side and an image side, respectively.
  • the effective focal lengths f1 to f6 of the respective lenses in Embodiment 6 are shown in Table 16 below.
  • f3/f5 0.458 can be satisfied between the effective focal length f3 of the third lens L3 and the effective focal length f5 of the fifth lens L5.
  • Table 17 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this embodiment.
  • Table 18 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 16 and A 18 of the respective aspherical surfaces S1 - S12 which can be used for the respective aspherical lenses in this embodiment.
  • the center thickness CT2 of the second lens L2 on the optical axis is the same as
  • Fig. 12A shows an axial chromatic aberration curve of the image pickup lens of Example 6, which shows that light rays of different wavelengths are deviated from a focus point after passing through the optical system.
  • Fig. 12B shows an astigmatism curve of the image pickup lens of Embodiment 6, which shows the meridional field curvature and the sagittal image plane curvature.
  • Fig. 12C is a graph showing the magnification chromatic aberration curve of the image pickup lens of Example 6, which shows the deviation of the different image heights on the image plane after the light rays pass through the image pickup lens. 12A to 12C, the imaging lens given in Embodiment 6 can achieve good imaging quality.
  • FIG. 13 is a block diagram showing the structure of an image pickup lens according to Embodiment 7 of the present application.
  • the imaging lens according to Embodiment 7 includes first to sixth lenses L1 to L6 each having an object side and an image side.
  • the effective focal lengths f1 to f6 of the respective lenses in Embodiment 7 are shown in Table 19 below.
  • f3/f5 0.713 may be satisfied between the effective focal length f3 of the third lens L3 and the effective focal length f5 of the fifth lens L5.
  • Table 20 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this embodiment.
  • Table 21 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 16 and A 18 of the respective aspherical surfaces S1 - S12 of the respective aspherical lenses usable in this embodiment.
  • Fig. 14A shows an axial chromatic aberration curve of the image pickup lens of Embodiment 7, which shows that the light beams of different wavelengths are deviated from the focus point after passing through the optical system.
  • Fig. 14B shows an astigmatism curve of the image pickup lens of Embodiment 7, which shows the meridional field curvature and the sagittal image plane curvature.
  • Fig. 14C shows a magnification chromatic aberration curve of the image pickup lens of Example 7, which shows the deviation of the different image heights on the image plane after the light rays pass through the image pickup lens. 14A to 14C, the imaging lens given in Embodiment 7 can achieve good imaging quality.
  • Fig. 15 is a view showing the configuration of an image pickup lens according to Embodiment 8 of the present application.
  • the imaging lens according to Embodiment 8 includes first to sixth lenses L1 to L6 each having an object side and an image side.
  • the effective focal lengths f1 to f6 of the lenses in Embodiment 8 are shown in Table 22 below.
  • f3/f5 0.915 may be satisfied between the effective focal length f3 of the third lens L3 and the effective focal length f5 of the fifth lens L5.
  • Table 23 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this embodiment.
  • Table 24 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 16 and A 18 of the respective aspherical surfaces S1 - S12 of the respective aspherical lenses usable in this embodiment.
  • Fig. 16A shows an axial chromatic aberration curve of the image pickup lens of Example 8, which shows that the light of different wavelengths is deviated from the focus point after passing through the optical system.
  • Fig. 16B shows an astigmatism curve of the image pickup lens of Embodiment 8, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 16C is a graph showing the magnification chromatic aberration curve of the image pickup lens of Example 8, which shows the deviation of the different image heights on the image plane after the light rays pass through the image pickup lens.
  • the imaging lens given in Embodiment 8 can achieve good imaging quality.
  • Embodiments 1 to 8 respectively satisfy the relationships shown in Table 25 below.
  • the present application also proposes an image pickup device whose photosensitive element may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).
  • the camera device may be an independent camera device such as a digital camera, or may be a camera module integrated on a mobile electronic device such as a mobile phone.
  • This image pickup apparatus is equipped with the image pickup lens described in each of the above embodiments.

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Abstract

一种摄像镜头，沿着光轴从物侧至像侧依次包括第一透镜（L1）、多个后续透镜以及设置在成像面上的感光元件，第一透镜（L1）具有负光焦度且其物侧面（S1）为凹面；第一透镜的物侧面（S1）至成像面的轴上距离TTL与感光元件的有效像素区域对角线长的一半ImgH之间满足：1.5＜TTL/ImgH＜1.7。

Description

摄像镜头及摄像装置
相关申请的交叉引用
本申请要求于2016年12月5日提交至中华人民共和国知识产权局(SIPO)的、第201611100838.3号中国专利申请的优先权，该中国专利申请的全部内容通过引用并入本文。
技术领域
本申请涉及摄像镜头以及装配有该摄像镜头的摄像装置。
背景技术
图像信息是人类可以获取的各种信息中的重要一类，而光学镜头几乎是图像信息获取的唯一入口。随着科技的进步，人们对于获取图像的质量和信息量在不断提高。图像的质量主要通过提高感光元件的像素的采样密度来实现，因此相应地需要增大系统的孔径，提升系统各个视场的传递函数来实现上述需求。光学系统所获取图像的信息量可以由系统的光学不变量来表示，而系统的光学不变量随着光学系统的视场而线性增加。
因此为了提升所获取图像的信息量，主要手段便是增加光学系统的视场。目前随着手机镜头的发展，消费者对于自拍的要求越来越高，由此对开发适用于自拍的大视场高分辨率的广角镜头便是十分必要的。由于手机镜头的高度限制，在兼顾大视场高分辨率高良率的同时，还要尽可能的压缩光学系统的长度。
发明内容
本申请提供了至少满足以上需求的技术方案。
一方面，本申请提供了一种摄像镜头。该摄像镜头沿着光轴从物侧至像侧依次包括：具有负光焦度的第一透镜且其物侧面为凹面；具有光焦度的第二透镜且其像侧面为凹面；具有正光焦度的第三透镜且其物侧面为凹面以及像侧面为凸面；具有负光焦度的第四透镜且其物 侧面为凹面；具有正光焦度的第五透镜且其物侧面为凹面以及像侧面为凸面；以及具有光焦度的第六透镜。该摄像镜头还包括沿着光轴设置在成像面上的电子感光元件。
根据本申请的实施方式，第一透镜的物侧面至成像面的轴上距离TTL与感光元件的有效像素区域对角线长的一半ImgH之间可满足：1.5＜TTL/ImgH＜1.7，例如，1.583≤TTL/ImgH≤1.660。
另一方面，本申请提供的摄像镜头沿着光轴从物侧至像侧依次包括：第一透镜，具有负光焦度且其物侧面为凹面；第二透镜，像侧面为凹面；第三透镜，具有正光焦度，其物侧面为凹面，像侧面为凸面；第四透镜，具有负光焦度且物侧面为凹面；第五透镜，具有正光焦度，其物侧面为凹面，像侧面为凸面；以及第六透镜，具有正光焦度或负光焦度，其中，所述第三透镜和所述第四透镜之间的轴上间隔距离T34与所述第五透镜和所述第六透镜之间的轴上间隔距离T56之间满足：0.5＜T34/T56＜1.2，例如，0.633≤T34/T56≤1.118。
根据本申请的实施方式，上述摄像镜头的最大视场角的一半HFOV例如可设置为：HFOV＞50°。
根据本申请的实施方式，第二透镜在光轴上的中心厚度CT2与第三透镜在光轴上的中心厚度CT3之间可满足：1＜CT2/CT3＜1.5，例如，1.028≤CT2/CT3≤1.424。
根据本申请的实施方式，第四透镜的有效焦距f4与摄像镜头的总有效焦距f之间可满足：-2＜f4/f＜-1，例如，-1.573≤f4/f≤-1.336。
根据本申请的实施方式，第三透镜的有效焦距f3与第五透镜的有效焦距f5之间可满足：0.4＜f3/f5＜1，例如，0.458≤f3/f5≤0.915。
根据本申请的实施方式，第五透镜的物侧面和光轴的交点至第五透镜的物侧面的有效半径顶点之间的轴上距离SAG51与第一透镜的物侧面至成像面的轴上距离TTL之间可满足：-0.2＜SAG51/TTL＜-0.1，例如，-0.144≤SAG51/TTL≤-0.119。
根据本申请的实施方式，第五透镜的物侧面的曲率半径R9与第五透镜的像侧面的曲率半径R10之间可满足：1＜R9/R10＜1.5，例如，1.166≤R9/R10≤1.419。
根据本申请的实施方式，第三透镜和第四透镜之间的轴上间隔距离T34与第五透镜和第六透镜之间的轴上间隔距离T56之间可满足：0.5＜T34/T56＜1.2，例如，0.633≤T34/T56≤1.118。
根据本申请的实施方式，第一透镜的物侧面的有效半径DT11与所述第五透镜的像侧面的有效半径DT52之间可满足：0.5＜DT11/DT52＜1.2，例如，0.608≤DT11/DT52≤1.150。
另一方面，本申请提供了一种摄像装置，所述摄像装置装配有上述摄像镜头。
本申请采用了多片(例如，六片)塑料非球面，通过合理分配多片透镜的光焦度和面型，可有效增加摄像镜头的视角，从而可保证镜头的小型化并提高成像质量。
附图说明
通过参照以下附图进行的详细描述，本申请的实施方式的以上及其它优点将变得显而易见，附图旨在示出本申请的示例性实施方式而非对其进行限制。在附图中：
图1为示出根据本申请实施例1的摄像镜头的结构示意图；
图2A示出了实施例1的摄像镜头的轴上色差曲线；
图2B示出了实施例1的摄像镜头的象散曲线；
图2C示出了实施例1的摄像镜头的倍率色差曲线；
图3为示出根据本申请实施例2的摄像镜头的结构示意图；
图4A示出了实施例2的摄像镜头的轴上色差曲线；
图4B示出了实施例2的摄像镜头的象散曲线；
图4C示出了实施例2的摄像镜头的倍率色差曲线；
图5为示出根据本申请实施例3的摄像镜头的结构示意图；
图6A示出了实施例3的摄像镜头的轴上色差曲线；
图6B示出了实施例3的摄像镜头的象散曲线；
图6C示出了实施例3的摄像镜头的倍率色差曲线；
图7为示出根据本申请实施例4的摄像镜头的结构示意图；
图8A示出了实施例4的摄像镜头的轴上色差曲线；
图8B示出了实施例4的摄像镜头的象散曲线；
图8C示出了实施例4的摄像镜头的倍率色差曲线；
图9为示出根据本申请实施例5的摄像镜头的结构示意图；
图10A示出了实施例5的摄像镜头的轴上色差曲线；
图10B示出了实施例5的摄像镜头的象散曲线；
图10C示出了实施例5的摄像镜头的倍率色差曲线；
图11为示出根据本申请实施例6的摄像镜头的结构示意图；
图12A示出了实施例6的摄像镜头的轴上色差曲线；
图12B示出了实施例6的摄像镜头的象散曲线；
图12C示出了实施例6的摄像镜头的倍率色差曲线；
图13为示出根据本申请实施例7的摄像镜头的结构示意图；
图14A示出了实施例7的摄像镜头的轴上色差曲线；
图14B示出了实施例7的摄像镜头的象散曲线；
图14C示出了实施例7的摄像镜头的倍率色差曲线；
图15为示出根据本申请实施例8的摄像镜头的结构示意图；
图16A示出了实施例8的摄像镜头的轴上色差曲线；
图16B示出了实施例8的摄像镜头的象散曲线；
图16C示出了实施例8的摄像镜头的倍率色差曲线；
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。
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，
此外，近轴区域是指光轴附近的区域。第一透镜是最靠近物体的透镜而第六透镜是最靠近感光元件的透镜。在本文中，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、整体、步骤、操作、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、整体、步骤、操作、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“可以”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)均具有与本发明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。
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摄像镜头具有总有效焦距f，并可包括沿着光轴从物侧至像侧依次排列的第一透镜、多个后续透镜以及感光元件。
在示例性实施方式中，第一透镜可具有负光焦度并且其物侧面可为凹面。第一透镜沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间可满足：1.5＜TTL/ImgH＜1.7，例如，1.583≤TTL/ImgH≤1.660。通过合理设置第一透镜的物侧面至成像面的轴上距离TTL，可将镜头总长约束在较短的范围内，保证该系统的小型化，以便于在较薄的手机镜头中使用。在小于该范围的情况下，随着系统的长度继续减小，像质迅速破坏；而在大于该范围的情况下，失去了作为超薄镜头在手机中的应用优势。
在示例性实施方式中，多个后续透镜可包括沿着光轴从第一透镜的像侧面依次排列的第二透镜和第三透镜。第二透镜的像侧面可为凹面。第三透镜可具有正光焦度且有效焦距为f3，其物侧面可为凹面并且其像侧面可以为凸面。在应用中，可对各透镜的厚度进行优化。例如，第二透镜在光轴上的中心厚度CT2与第三透镜在光轴上的中心厚度CT3之间可满足：1＜CT2/CT3＜1.5，例如，1.028≤CT2/CT3≤1.424。通过合理分配第二透镜和第三透镜的中心厚度CT2和CT3，可确保光学系统具有较小的长度，从而保证摄像镜头的小型化。
在示例性实施方式中，多个后续透镜还可包括设置在第三透镜的像侧面的第四透镜。第三透镜与第四透镜的轴上间隔距离可设置为T34。第四透镜可具有负光焦度且有效焦距为f4，其物侧面可为凹面。第四透镜的有效焦距为f4与摄像镜头的总有效焦距f之间可满足：-2＜f4/f＜-1，例如，-1.573≤f4/f≤-1.336。如本领域技术人员已知的，球差是限制透镜分辨率的最主要的因素之一，在本申请中通过将第四透镜配置为承担一定的负光焦度，可有效地矫正球差，从而提高摄像镜头的分辨率。
在另一示例性实施方式中，多个后续透镜还可包括沿着光轴从第三透镜的像侧面依次排列的第五透镜和第六透镜。在实践中，还可对各透镜之间的轴上间隔距离进行优化。例如，第三透镜与第四透镜的轴上间隔距离T34和第五透镜与第六透镜的轴上间隔距离T56之间可满足：0.5＜T34/T56＜1.2，例如，0.633≤T34/T56≤1.118。通过合理设置各透镜之间的轴上间隔距离，可在保证使摄像镜头小型化的同时矫正三阶像差，从而提高成像品质。
第五透镜可具有正光焦度且有效焦距为f5，其物侧面可为凹面且像侧面可以为凸面。第五透镜的有效焦距f5与第三透镜的有效焦距f3之间可满足0.4＜f3/f5＜1，例如，0.458≤f3/f5≤0.915，以使光线能够较为平滑地偏转到成像面并平衡像差，从而有效地提高成像质量。
为了保证能够较容易地加工成形该摄像镜头，需要合理配置第五透镜的形状。例如，第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像 面的轴上距离TTL之间可满足：-0.2＜SAG51/TTL＜-0.1，例如，-0.144≤SAG51/TTL≤-0.119。
可通过合理设置第五透镜物侧面的曲率半径R9和第五透镜像侧面的曲率半径R10对第五透镜的球差进行矫正，从而可有效保证该摄像镜头的成像质量。第五透镜物侧面的曲率半径R9和第五透镜像侧面的曲率半径R10之间可满足1＜R9/R10＜1.5，例如，1.166≤R9/R10≤1.419。
此外，还可将第一透镜与第五透镜设置成使第一透镜物侧面的有效半径DT11与第五透镜像侧面的有效半径DT52之间满足0.5＜DT11/DT52＜1.2，例如，0.608≤DT11/DT52≤1.150。通过合理配置第五透镜像侧面的有效半径与第一透镜物侧面的有效半径，可有效地矫正畸变，同时有利于摄像镜头的成形，从而使得面精度得以保证。
在具体应用中，还可将本申请的摄像镜头的最大视场角的一半HFOV设置为：HFOV＞50°，从而通过合理分配各透镜的光焦度和面型来有效地增加摄像镜头的视角，进而保证镜头的小型化并提高成像质量。
根据本申请的上述实施方式的摄像镜头可采用多片镜片，例如上文所述的6片。通过合理分配各透镜的光焦度、面型、各透镜之间的轴上间距等，可有效增加摄像镜头的视角，保证镜头的小型化并提高成像质量，从而使得摄像镜头更有利于生产加工并且可适用于便携式电子产品。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：从透镜中心到周边曲率是连续变化的。与从透镜中心到周边有一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，能够使得视野变得更大而真实。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，可改变镜头的构成数量，来获得下面描述的各个结果和优点。例如，虽然在第一实施方式中的描述中采用由六个透镜为例进行了描述，但是该摄像镜头不限于包括六个透镜。如果需要， 该摄像镜头还可包括其它数量的透镜。
下面参照图1至图16C进一步描述可适用于上述实施方式的摄像镜头的具体实施例。
实施例1
以下参照图1至图2C描述本申请上述实施方方式的摄像镜头的实施例1。
如图1所示，摄像镜头的实施例1包括具有物侧面S1和像侧面S2的第一透镜L1、具有物侧面S3和像侧面S4的第二透镜L2、具有物侧面S5和像侧面S6的第三透镜L3、具有物侧面S7和像侧面S8的第四透镜L4、具有物侧面S9和像侧面S10的第五透镜L5以及具有物侧面S11和像侧面S12的第六透镜L6。摄像镜头还可包括光阑(未示出)以及用于滤除红外光的具有物侧面S13和像侧面S14的滤光片L7。在本实施例的摄像镜头中，还可设置光圈STO以调解进光量。来自物体的光依次穿过各表面S1至S14并最终成像在成像表面S15上。
下表1中示出了实施例1中的各透镜的有效焦距f1至f6、摄像镜头的总有效焦距f、摄像透镜的总长度TTL以及摄像镜头的最大视场角的一半HFOV。
参照表1，第三透镜L3的有效焦距f3与第五透镜L5的有效焦距f5之间可满足f3/f5＝0.799。第四透镜L4的有效焦距为f4与摄像镜头的总有效焦距f之间可满足f4/f＝-1.588。摄像镜头的最大视场角的一半HFOV可设置为HFOV＝60.003°。
f1(mm) -4.18 f(mm) 1.81
f2(mm) 2.37 Fno 2.50
f3(mm) 1.86 TTL(mm) 3.69
f4(mm) -2.83 HFOV(°) 60.003
f5(mm) 2.33    
f6(mm) -4.26    
表1
表2示出该实施例中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。表3示出了可用于该实施例中的各非球面透镜的各非球面S1-S12的高次项系数A4、A6、A8、A10、A12、A16和A18。
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1.6115 0.3725 1.544/56.11 -13.1237
S2 非球面 -5.9278 0.0556   -93.9130
S3 非球面 1.0460 0.3621 1.544/56.11 0.5667
S4 非球面 4.8181 0.0739   -76.9377
STO 球面 无穷 0.0784    
S5 非球面 -4.9767 0.3522 1.544/56.11 69.8514
S6 非球面 -0.8662 0.0500   -1.7153
S7 非球面 -7.6598 0.2003 1.651/21.52 -62.7705
S8 非球面 2.4729 0.2968   -0.2710
S9 非球面 -0.8419 0.5052 1.544/56.11 -3.8415
S10 非球面 -0.6145 0.0500   -1.7589
S11 非球面 0.8343 0.3000 1.535/55.8 -2.0198
S12 非球面 0.5344 0.4597   -3.0175
S13 球面 无穷 0.2100    
S14 球面 无穷 0.3231    
S15 球面 无穷      
表2
参照表2和表3，第二透镜L2在光轴上的中心厚度CT2与第三透镜L3在光轴上的中心厚度CT3之间满足CT2/CT3＝1.028。第五透镜物侧面S9的曲率半径R9和第五透镜像侧面S10的曲率半径R10之间满足R9/R10＝1.370。
面号 A4 A6 A8 A10 A12 A14 A16 A18
S1 2.6389E-01 -7.1287E-01 1.3916E+00 -1.9015E+00 1.7904E+00 -1.0946E+00 3.8814E-01 -6.0288E-02
S2 1.4224E+00 -9.2565E+00 4.5454E+01 -1.5545E+02 3.5934E+02 -5.2582E+02 4.3656E+02 -1.5530E+02
S3 9.0054E-01 -9.6856E+00 5.8831E+01 -2.3937E+02 6.2446E+02 -9.2459E+02 5.6473E+02 0.0000E+00
S4 9.6315E-02 -4.0693E-01 -2.7420E+00 4.4751E+01 -3.1293E+02 8.8750E+02 -8.8919E+02 0.0000E+00
S5 -3.6015E-01 -1.5037E+00 1.1638E+01 -2.3663E+02 2.0722E+03 -9.7481E+03 1.8234E+04 0.0000E+00
S6 -5.7870E-01 3.8650E-01 6.5744E-01 -5.1917E+01 3.4511E+02 -1.0927E+03 1.2872E+03 0.0000E+00
S7 -9.4547E-01 2.4951E+00 -1.2486E+01 5.5808E+01 -1.6961E+02 3.1686E+02 -2.7944E+02 0.0000E+00
S8 -6.2083E-01 1.3250E+00 -3.3444E+00 6.8775E+00 -1.0515E+01 1.1382E+01 -5.7592E+00 0.0000E+00
S9 7.4773E-02 -1.9764E+00 1.0729E+01 -2.1760E+01 1.6658E+01 5.1586E+00 -1.4508E+01 5.7764E+00
S10 -1.2278E-01 -8.9754E-01 4.6535E+00 -1.4247E+01 3.0938E+01 -3.7545E+01 2.2635E+01 -5.3238E+00
S11 -8.3790E-01 8.6289E-01 -5.4325E-01 1.8165E-01 -6.2297E-03 -1.6251E-02 4.8740E-03 -4.5176E-04
S12 -4.6756E-01 5.3653E-01 -4.4753E-01 2.5759E-01 -9.9906E-02 2.4213E-02 -3.2447E-03 1.8198E-04
表3
在该实施例中，第一透镜L1沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间满足TTL/ImgH＝1.615。第三透镜L3与第四透镜L4的轴上间隔距离T34和第五透镜L5与第六透镜L6的轴上间隔距离T56之间满足 T34/T56＝1。第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像面的轴上距离TTL之间满足SAG51/TTL＝-0.137。第一透镜物侧面S1的有效半径DT11与第五透镜像侧面S10的有效半径DT52之间满足DT11/DT52＝1.058。
图2A示出了实施例1的摄像镜头的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图2B示出了实施例1的摄像镜头的象散曲线，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的摄像镜头的倍率色差曲线，其表示光线经由摄像镜头后在成像面上的不同的像高的偏差。根据图2A至图2C可知，实施例1所给出的摄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4C描述本申请的上述摄像镜头的实施例2。除了摄像镜头的各镜片的参数之外，例如除了各镜片的曲率半径、厚度、材料、圆锥系数、有效焦距、轴上间距、各镜面的高次项系数等之外，在本实施例2及以下各实施例中描述的摄像镜头与实施例1中描述的摄像镜头的布置结构相同。为了简洁起见，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的摄像镜头的结构示意图。如图3所示，根据实施例2的摄像镜头包括分别具有物侧面和像侧面的第一至第六透镜L1-L6。
下表4中示出了实施例2中的各透镜的有效焦距f1至f6、摄像镜头的总有效焦距f、摄像透镜的总长度TTL以及摄像镜头的最大视场角的一半HFOV。
f1(mm) -2.90 f(mm) 1.88
f2(mm) 1.68 Fno 2.54
f3(mm) 2.06 TTL(mm) 3.65
f4(mm) -2.75 HFOV(°) 59.884
f5(mm) 3.04    
f6(mm) -5.14    
表4
参照表4，第三透镜L3的有效焦距f3与第五透镜L5的有效焦距f5之间可满足f3/f5＝0.679。第四透镜L4的有效焦距为f4与摄像镜头的总有效焦距f之间可满足f4/f＝-1.457。摄像镜头的最大视场角的一半HFOV可设置为HFOV＝59.884°。
表5示出该实施例中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。表6示出了可用于该实施例中的各非球面透镜的各非球面S1-S12的高次项系数A4、A6、A8、A10、A12、A16和A18。
参照表5和表6，第二透镜L2在光轴上的中心厚度CT2与第三透镜L3在光轴上的中心厚度CT3之间满足CT2/CT3＝1.317。第五透镜物侧面S9的曲率半径R9和第五透镜像侧面S10的曲率半径R10之间满足R9/R10＝1.255。
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1.3622 0.3762 1.544/56.11 -11.3142
S2 非球面 -10.6811 0.0541   79.4717
S3 非球面 0.8802 0.4099 1.544/56.11 -0.0499
S4 非球面 18.1358 0.0629   -95.0000
STO 球面 无穷 0.0973    
S5 非球面 -3.6761 0.3113 1.544/56.11 25.2468
S6 非球面 -0.8878 0.0500   -0.9878
S7 非球面 -5.0107 0.2000 1.651/21.52 66.8369
S8 非球面 2.8579 0.3180   -1.7256
S9 非球面 -0.8318 0.4631 1.544/56.11 -3.6482
S10 非球面 -0.6630 0.0500   -1.6113
S11 非球面 0.8684 0.3000 1.535/55.8 -1.8725
S12 非球面 0.5809 0.4406   -2.6529
S13 球面 无穷 0.2100 1.517/64.17  
S14 球面 无穷 0.3073    
S15 球面 无穷      
表5
在该实施例中，第一透镜L1沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间满足TTL/ImgH＝1.601。第三透镜L3与第四透镜L4的轴上间隔距离T34和第五透镜L5与第六透镜L6的轴上间隔距离T56之间满足T34/T56＝1。第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像面的轴上 距离TTL之间满足SAG51/TTL＝-0.140。第一透镜物侧面S1的有效半径DT11与第五透镜像侧面S10的有效半径DT52之间满足DT11/DT52＝1.082。
面号 A4 A6 A8 A10 A12 A14 A16 A18
S1 1.4446E-01 -2.7709E-01 4.6887E-01 -5.4289E-01 4.0638E-01 -1.7522E-01 3.3411E-02 -6.3844E-04
S2 8.8748E-01 -4.4453E+00 2.2580E+01 -8.2701E+01 2.1576E+02 -3.7165E+02 3.7868E+02 -1.6992E+02
S3 2.1963E-01 -3.1884E+00 1.6077E+01 -3.9930E+01 2.6507E+01 8.7368E+01 -1.3961E+02 0.0000E+00
S4 -3.9739E-02 -1.5971E-01 -7.5945E-02 1.0151E+00 -1.2475E+00 5.8515E-01 -9.7371E-02 0.0000E+00
S5 -2.6992E-01 -9.8511E-01 -6.0480E+00 5.2683E+01 -2.5543E+02 -1.0529E+02 2.2048E+03 0.0000E+00
S6 -1.3573E-01 -2.3942E+00 1.9187E+01 -1.7643E+02 9.7526E+02 -2.8743E+03 3.3787E+03 0.0000E+00
S7 -5.6830E-01 -6.4090E-01 4.9951E+00 -2.4483E+01 9.5805E+01 -1.9534E+02 1.3615E+02 0.0000E+00
S8 -5.4750E-01 7.9971E-01 -1.7061E+00 4.0680E+00 -6.0927E+00 6.2136E+00 -3.3374E+00 0.0000E+00
S9 1.0385E-02 -2.7217E+00 1.2897E+01 -2.6799E+01 3.3156E+01 -2.4901E+01 1.0224E+01 -1.7361E+00
S10 -1.0742E-01 -1.0467E+00 4.7877E+00 -1.5514E+01 3.6295E+01 -4.6127E+01 2.8775E+01 -6.9824E+00
S11 -8.3495E-01 4.7801E-01 2.8433E-01 -6.2492E-01 4.3129E-01 -1.5298E-01 2.8015E-02 -2.1016E-03
S12 -5.5582E-01 6.0125E-01 -4.6713E-01 2.4543E-01 -8.1413E-02 1.4142E-02 -6.6661E-04 -6.9308E-05
表6
图4A示出了实施例2的摄像镜头的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图4B示出了实施例2的摄像镜头的象散曲线，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的摄像镜头的倍率色差曲线，其表示光线经由摄像镜头后在成像面上的不同的像高的偏差。根据图4A至图4C可知，实施例2所给出的摄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6C描述本申请的上述摄像镜头的实施例3。图5示出了根据本申请实施例3的摄像镜头的结构示意图。如图5所示，根据实施例3的摄像镜头包括分别具有物侧面和像侧面的第一至第六透镜L1-L6。
下表7中示出了实施例3中的各透镜的有效焦距f1至f6、摄像镜头的总有效焦距f、摄像透镜的总长度TTL以及摄像镜头的最大视场角的一半HFOV。
参照表7，第三透镜L3的有效焦距f3与第五透镜L5的有效焦距f5之间可满足f3/f5＝0.702。第四透镜L4的有效焦距为f4与摄像镜头的总有效焦距f之间可满足f4/f＝-1.408。摄像镜头的最大视场角的一 半HFOV可设置为HFOV＝59.889°。
f1(mm) -2.86 f(mm) 1.88
f2(mm) 1.63 Fno 2.53
f3(mm) 2.04 TTL(mm) 3.64
f4(mm) -2.65 HFOV(°) 59.889
f5(mm) 2.90    
f6(mm) -4.70    
表7
表8示出该实施例中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。表9示出了可用于该实施例中的各非球面透镜的各非球面S1-S12的高次项系数A4、A6、A8、A10、A12、A16和A18。
参照表8和表9，第二透镜L2在光轴上的中心厚度CT2与第三透镜L3在光轴上的中心厚度CT3之间满足CT2/CT3＝1.400。第五透镜物侧面S9的曲率半径R9和第五透镜像侧面S10的曲率半径R10之间满足R9/R10＝1.259。
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1.3569 0.3734 1.544/56.11 -11.3505
S2 非球面 -11.2388 0.0518   -10.7734
S3 非球面 0.8798 0.4151 1.544/56.11 -0.1448
S4 非球面 68.1962 0.0655   95.0000
STO 球面 无穷 0.1034    
S5 非球面 -3.2513 0.2965 1.544/56.11 27.6669
S6 非球面 -0.8556 0.0500   -1.3010
S7 非球面 -4.2561 0.2000 1.651/21.52 -3.3675
S8 非球面 3.0032 0.3064   -1.6824
S9 非球面 -0.8240 0.4831 1.544/56.11 -3.7332
S10 非球面 -0.6543 0.0500   -1.6097
S11 非球面 0.9022 0.3000 1.535/55.8 -1.8755
S12 非球面 0.5875 0.4365   -2.6798
S13 球面 无穷 0.2100 1.517/64.17  
S14 球面 无穷 0.3032    
S15 球面 无穷      
表8
在该实施例中，第一透镜L1沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间满足TTL/ImgH＝1.599。第三透镜L3与第四透镜L4的轴上间隔距离T34和第五透镜L5与第六透镜L6的轴上间隔距离T56之间满足 T34/T56＝1。第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像面的轴上距离TTL之间满足SAG51/TTL＝-0.142。第一透镜物侧面S1的有效半径DT11与第五透镜像侧面S10的有效半径DT52之间满足DT11/DT52＝1.069。
面号 A4 A6 A8 A10 A12 A14 A16 A18
S1 1.4800E-01 -2.9010E-01 4.9138E-01 -5.5453E-01 3.9484E-01 -1.5623E-01 2.3713E-02 1.1707E-03
S2 9.4112E-01 -4.7952E+00 2.4133E+01 -8.7244E+01 2.2646E+02 -3.9161E+02 4.0362E+02 -1.8441E+02
S3 2.8150E-01 -3.3965E+00 1.5728E+01 -2.9620E+01 -2.8769E+01 2.2103E+02 -2.8285E+02 0.0000E+00
S4 -5.0927E-02 -4.4316E-01 3.6254E+00 -2.8974E+01 1.2287E+02 -2.8844E+02 2.6811E+02 0.0000E+00
S5 -2.5285E-01 -4.7337E-01 -1.5738E+01 1.5977E+02 -8.9602E+02 1.8243E+03 3.5758E+01 0.0000E+00
S6 -3.2796E-02 -4.8694E+00 5.2851E+01 -4.6089E+02 2.3640E+03 -6.4791E+03 7.2489E+03 0.0000E+00
S7 -5.5936E-01 -1.7262E+00 1.4207E+01 -7.9585E+01 2.7297E+02 -4.8105E+02 2.8824E+02 0.0000E+00
S8 -5.7804E-01 9.2619E-01 -1.8814E+00 3.6386E+00 -3.6078E+00 2.0410E+00 -9.5274E-01 0.0000E+00
S9 -5.7374E-02 -2.5428E+00 1.3321E+01 -2.8525E+01 3.5208E+01 -2.5979E+01 1.0457E+01 -1.7466E+00
S10 -1.1987E-01 -8.5164E-01 3.4418E+00 -1.0490E+01 2.6212E+01 -3.5172E+01 2.2678E+01 -5.6168E+00
S11 -8.3153E-01 4.1252E-01 4.6066E-01 -8.4863E-01 5.8545E-01 -2.1214E-01 3.9921E-02 -3.0831E-03
S12 -5.7251E-01 6.3574E-01 -5.0764E-01 2.7489E-01 -9.4451E-02 1.7256E-02 -9.7499E-04 -6.6872E-05
表9
图6A示出了实施例3的摄像镜头的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图6B示出了实施例3的摄像镜头的象散曲线，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的摄像镜头的倍率色差曲线，其表示光线经由摄像镜头后在成像面上的不同的像高的偏差。根据图6A至图6C可知，实施例3所给出的摄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8C描述本申请的上述摄像镜头的实施例4。图7示出了根据本申请实施例4的摄像镜头的结构示意图。如图7所示，根据实施例4的摄像镜头包括分别具有物侧面和像侧面的第一至第六透镜L1-L6。
下表10中示出了实施例4中的各透镜的有效焦距f1至f6、摄像镜头的总有效焦距f、摄像透镜的总长度TTL以及摄像镜头的最大视场角的一半HFOV。
f1(mm) -2.73 f(mm) 1.88
f2(mm) 1.58 Fno 2.53
f3(mm) 2.09 TTL(mm) 3.65
f4(mm) -2.71 HFOV(°) 60.005
f5(mm) 2.94    
f6(mm) -4.83    
表10
参照表10，第三透镜L3的有效焦距f3与第五透镜L5的有效焦距f5之间可满足f3/f5＝0.709。第四透镜L4的有效焦距为f4与摄像镜头的总有效焦距f之间可满足f4/f＝-1.437。摄像镜头的最大视场角的一半HFOV可设置为HFOV＝60.005°。
表11示出该实施例中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。表12示出了可用于该实施例中的各非球面透镜的各非球面S1-S12的高次项系数A4、A6、A8、A10、A12、A16和A18。
参照表11和表12，第二透镜L2在光轴上的中心厚度CT2与第三透镜L3在光轴上的中心厚度CT3之间满足CT2/CT3＝1.424。第五透镜物侧面S9的曲率半径R9和第五透镜像侧面S10的曲率半径R10之间满足R9/R10＝1.254。
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1.3464 0.3703 1.544/56.11 -11.6584
S2 非球面 -15.1731 0.0500   -24.0654
S3 非球面 0.8560 0.4242 1.544/56.11 -0.1287
S4 非球面 108.0227 0.0621   -95.0000
STO 球面 无穷 0.1060    
S5 非球面 -3.1276 0.2979 1.544/56.11 29.5155
S6 非球面 -0.8626 0.0500   -1.1074
S7 非球面 -4.0845 0.2000 1.651/21.52 4.1158
S8 非球面 3.2044 0.2991   -2.1626
S9 非球面 -0.8251 0.4838 1.544/56.11 -3.7792
S10 非球面 -0.6578 0.0500   -1.6039
S11 非球面 0.8911 0.3000 1.535/55.8 -1.7815
S12 非球面 0.5851 0.4385   -2.6172
S13 球面 无穷 0.2100 1.517/64.17  
S14 球面 无穷 0.3052    
S15 球面 无穷      
表11
在该实施例中，第一透镜L1沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间满 足TTL/ImgH＝1.596。第三透镜L3与第四透镜L4的轴上间隔距离T34和第五透镜L5与第六透镜L6的轴上间隔距离T56之间满足T34/T56＝1。第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像面的轴上距离TTL之间满足SAG51/TTL＝-0.142。第一透镜物侧面S1的有效半径DT11与第五透镜像侧面S10的有效半径DT52之间满足DT11/DT52＝1.057。
面号 A4 A6 A8 A10 A12 A14 A16 A18
S1 1.4053E-01 -2.6281E-01 4.2243E-01 -4.4294E-01 2.7908E-01 -8.3618E-02 -7.8064E-04 4.4890E-03
S2 8.8523E-01 -4.4949E+00 2.3079E+01 -8.5187E+01 2.2444E+02 -3.8934E+02 3.9695E+02 -1.7720E+02
S3 2.0583E-01 -3.0788E+00 1.6129E+01 -4.3389E+01 5.1015E+01 2.1749E+01 -8.4459E+01 0.0000E+00
S4 -3.2738E-02 -3.8317E-01 2.9344E+00 -1.5112E+01 3.5207E+01 -3.5750E+01 1.3074E+01 0.0000E+00
S5 -2.4837E-01 -3.2793E-01 -1.7314E+01 1.8014E+02 -1.0616E+03 2.5287E+03 -1.1797E+03 0.0000E+00
S6 -1.1788E-01 -4.0026E+00 4.7526E+01 -4.4125E+02 2.3159E+03 -6.4052E+03 7.1728E+03 0.0000E+00
S7 -6.4832E-01 -8.9759E-01 8.8343E+00 -5.6375E+01 2.0586E+02 -3.6519E+02 1.9762E+02 0.0000E+00
S8 -5.7356E-01 9.5273E-01 -2.0273E+00 3.9888E+00 -4.1207E+00 2.4037E+00 -1.0132E+00 0.0000E+00
S9 -5.1058E-02 -2.5306E+00 1.3110E+01 -2.7690E+01 3.3497E+01 -2.4107E+01 9.4377E+00 -1.5302E+00
S10 -1.2072E-01 -8.1936E-01 3.3089E+00 -1.0232E+01 2.5825E+01 -3.4733E+01 2.2397E+01 -5.5455E+00
S11 -8.3793E-01 4.0617E-01 4.6864E-01 -8.4457E-01 5.7545E-01 -2.0630E-01 3.8444E-02 -2.9427E-03
S12 -5.8069E-01 6.4779E-01 -5.1912E-01 2.8261E-01 -9.7828E-02 1.8178E-02 -1.1208E-03 -5.6607E-05
表12
图8A示出了实施例4的摄像镜头的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图8B示出了实施例4的摄像镜头的象散曲线，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的摄像镜头的倍率色差曲线，其表示光线经由摄像镜头后在成像面上的不同的像高的偏差。根据图8A至图8C可知，实施例4所给出的摄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10C描述本申请的上述摄像镜头的实施例5。图9示出了根据本申请实施例5的摄像镜头的结构示意图。如图9所示，根据实施例5的摄像镜头包括分别具有物侧面和像侧面的第一至第六透镜L1-L6。
下表13中示出了实施例5中的各透镜的有效焦距f1至f6、摄像 镜头的总有效焦距f、摄像透镜的总长度TTL以及摄像镜头的最大视场角的一半HFOV。
f1(mm) -3.57 f(mm) 1.88
f2(mm) 2.05 Fno 2.53
f3(mm) 1.96 TTL(mm) 3.62
f4(mm) -2.57 HFOV(°) 60.008
f5(mm) 2.50    
f6(mm) -4.20    
表13
参照表13，第三透镜L3的有效焦距f3与第五透镜L5的有效焦距f5之间可满足f3/f5＝0.786。第四透镜L4的有效焦距为f4与摄像镜头的总有效焦距f之间可满足f4/f＝-1.363。摄像镜头的最大视场角的一半HFOV可设置为HFOV＝60.008°。
表14示出该实施例中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。表15示出了可用于该实施例中的各非球面透镜的各非球面S1-S12的高次项系数A4、A6、A8、A10、A12、A16和A18。
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1.3320 0.3100 1.544/56.11 -13.1601
S2 非球面 -4.5659 0.0659   -79.3509
S3 非球面 1.1206 0.3594 1.544/56.11 0.8667
S4 非球面 -573.2212 0.0609   95.0000
STO 球面 无穷 0.0840    
S5 非球面 -5.2460 0.3060 1.544/56.11 95.0000
S6 非球面 -0.9081 0.0559   -1.1362
S7 非球面 -7.0783 0.2000 1.651/21.52 -76.1524
S8 非球面 2.2362 0.3513   -8.2981
S9 非球面 -0.9196 0.4689 1.544/56.11 -3.1029
S10 非球面 -0.6482 0.0500   -1.6506
S11 非球面 0.8994 0.3096 1.535/55.8 -2.0085
S12 非球面 0.5656 0.4596   -2.7664
S13 球面 无穷 0.2100 1.517/64.17  
S14 球面 无穷 0.3263    
S15 球面 无穷      
表14
参照表14和表15，第二透镜L2在光轴上的中心厚度CT2与第三透镜L3在光轴上的中心厚度CT3之间满足CT2/CT3＝1.175。第五透镜物侧面S9的曲率半径R9和第五透镜像侧面S10的曲率半径R10 之间满足R9/R10＝1.419。
面号 A4 A6 A8 A10 A12 A14 A16 A18
S1 1.4446E-01 -2.7375E-01 3.8131E-01 -2.8063E-01 1.0202E-01 -1.4280E-02 -9.8016E-04 3.7629E-04
S2 1.2772E+00 -7.2933E+00 3.7565E+01 -1.4661E+02 4.1415E+02 -7.6701E+02 8.3141E+02 -3.9553E+02
S3 5.4397E-01 -6.2323E+00 3.3288E+01 -1.2776E+02 3.0662E+02 -3.8593E+02 1.4634E+02 0.0000E+00
S4 -3.7371E-02 -7.8287E-01 2.2179E+00 -1.9066E+01 1.0737E+02 -3.2918E+02 3.8380E+02 0.0000E+00
S5 -1.0157E-01 -1.7442E+00 6.4589E+00 -3.5854E+01 7.3618E+01 -1.8894E+02 8.0331E+02 0.0000E+00
S6 2.0628E-01 -4.6103E+00 2.3336E+01 -8.7815E+01 2.4828E+02 -5.9341E+02 7.1894E+02 0.0000E+00
S7 -3.1623E-01 -2.8219E+00 1.1888E+01 -1.7602E+00 -1.2125E+02 3.5022E+02 -3.4359E+02 0.0000E+00
S8 -3.7850E-01 1.3041E-01 7.6228E-01 -6.0372E-01 -2.9320E+00 5.6050E+00 -2.7347E+00 0.0000E+00
S9 2.4633E-01 -2.3997E+00 8.3336E+00 -1.3936E+01 1.3256E+01 -7.4588E+00 2.3307E+00 -3.1293E-01
S10 -5.6255E-02 -8.4078E-01 3.1941E+00 -9.4029E+00 2.0374E+01 -2.3123E+01 1.2482E+01 -2.5568E+00
S11 -7.8359E-01 5.1492E-01 6.8897E-02 -3.6328E-01 2.7461E-01 -1.0112E-01 1.8854E-02 -1.4222E-03
S12 -5.2686E-01 6.0657E-01 -5.1952E-01 3.1174E-01 -1.2582E-01 3.1461E-02 -4.3069E-03 2.4440E-04
表15
在该实施例中，第一透镜L1沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间满足TTL/ImgH＝1.583。第三透镜L3与第四透镜L4的轴上间隔距离T34和第五透镜L5与第六透镜L6的轴上间隔距离T56之间满足T34/T56＝1.118。第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像面的轴上距离TTL之间满足SAG51/TTL＝-0.144。第一透镜物侧面S1的有效半径DT11与第五透镜像侧面S10的有效半径DT52之间满足DT11/DT52＝0.608。
图10A示出了实施例5的摄像镜头的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图10B示出了实施例5的摄像镜头的象散曲线，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的摄像镜头的倍率色差曲线，其表示光线经由摄像镜头后在成像面上的不同的像高的偏差。根据图10A至图10C可知，实施例5所给出的摄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12C描述本申请的上述摄像镜头的实施例6。图11示出了根据本申请实施例6的摄像镜头的结构示意图。如图11所示，根据实施例6的摄像镜头包括分别具有物侧面和像侧面的第一 至第六透镜L1-L6。
下表16中示出了实施例6中的各透镜的有效焦距f1至f6、摄像镜头的总有效焦距f、摄像透镜的总长度TTL以及摄像镜头的最大视场角的一半HFOV。
参照表16，第三透镜L3的有效焦距f3与第五透镜L5的有效焦距f5之间可满足f3/f5＝0.458。第四透镜L4的有效焦距为f4与摄像镜头的总有效焦距f之间可满足f4/f＝-1.336。摄像镜头的最大视场角的一半HFOV可设置为HFOV＝60.002°。
f1(mm) -3.37 f(mm) 1.80
f2(mm) 1.96 Fno 2.52
f3(mm) 1.99 TTL(mm) 3.70
f4(mm) -2.40 HFOV(°) 60.002
f5(mm) 4.34    
f6(mm) 26.24    
表16
表17示出该实施例中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。表18示出了可用于该实施例中的各非球面透镜的各非球面S1-S12的高次项系数A4、A6、A8、A10、A12、A16和A18。
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1.4051 0.2716 1.544/56.11 -15.7572
S2 非球面 -6.3340 0.0553   -22.9241
S3 非球面 1.1024 0.3662 1.544/56.11 -0.5510
S4 非球面 -29.7965 0.0500   95.0000
STO 球面 无穷 0.0996    
S5 非球面 -3.6304 0.2924 1.544/56.11 9.2005
S6 非球面 -0.8601 0.0501   -1.0143
S7 非球面 -2.7738 0.2000 1.651/21.52 20.8479
S8 非球面 3.7507 0.2173   -17.8073
S9 非球面 -0.8788 0.4370 1.544/56.11 -4.3498
S10 非球面 -0.7538 0.0792   -1.8033
S11 非球面 1.5299 0.5810 1.535/55.8 -78.5572
S12 非球面 1.4887 0.7352   -9.5931
S13 球面 无穷 0.2100 1.517/64.17  
S14 球面 无穷 0.0550    
S15 球面 无穷      
表17
参照表17和表18，第二透镜L2在光轴上的中心厚度CT2与第 三透镜L3在光轴上的中心厚度CT3之间满足CT2/CT3＝1.252。第五透镜物侧面S9的曲率半径R9和第五透镜像侧面S10的曲率半径R10之间满足R9/R10＝1.166。
面号 A4 A6 A8 A10 A12 A14 A16 A18
S1 2.7891E-01 -8.0376E-01 1.7780E+00 -2.6596E+00 2.5347E+00 -1.4605E+00 4.5890E-01 -5.9568E-02
S2 1.3901E+00 -8.6478E+00 4.1855E+01 -1.2963E+02 2.6031E+02 -3.3730E+02 2.8480E+02 -1.2650E+02
S3 6.8810E-01 -1.1494E+01 8.4051E+01 -3.6598E+02 9.3396E+02 -1.2429E+03 6.3241E+02 0.0000E+00
S4 -3.8614E-01 1.6842E+00 -1.7355E+01 1.2251E+02 -4.7142E+02 8.8117E+02 -6.2602E+02 0.0000E+00
S5 -2.0767E-01 -1.9275E+00 1.3033E+01 -1.1945E+02 6.4463E+02 -1.4879E+03 1.2110E+03 0.0000E+00
S6 -2.4152E-01 9.7001E-01 1.2800E+01 -3.8390E+02 2.5694E+03 -7.2703E+03 7.5841E+03 0.0000E+00
S7 -6.3755E-01 -1.4198E+00 4.0416E+01 -4.3036E+02 1.9733E+03 -4.0638E+03 3.0841E+03 0.0000E+00
S8 -8.4411E-01 4.0464E+00 -1.7509E+01 4.6854E+01 -7.5261E+01 6.7590E+01 -2.5786E+01 0.0000E+00
S9 -1.0446E+00 6.6849E+00 -1.7199E+01 2.7978E+01 -3.1377E+01 2.2992E+01 -9.6265E+00 1.7130E+00
S10 -1.3404E+00 6.1854E+00 -1.4957E+01 1.4084E+01 1.2864E+01 -3.8062E+01 2.8505E+01 -7.2096E+00
S11 1.8317E-01 -1.9622E-01 -3.9038E-01 6.0261E-01 -3.2428E-01 8.4547E-02 -1.0791E-02 5.4047E-04
S12 8.1022E-03 -6.1766E-03 -9.1068E-02 8.8374E-02 -3.9354E-02 9.4214E-03 -1.1580E-03 5.7188E-05
表18
在该实施例中，第一透镜L1沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间满足TTL/ImgH＝1.619。第三透镜L3与第四透镜L4的轴上间隔距离T34和第五透镜L5与第六透镜L6的轴上间隔距离T56之间满足T34/T56＝0.633。第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像面的轴上距离TTL之间满足SAG51/TTL＝-0.119。第一透镜物侧面S1的有效半径DT11与第五透镜像侧面S10的有效半径DT52之间满足DT11/DT52＝1.150。
图12A示出了实施例6的摄像镜头的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图12B示出了实施例6的摄像镜头的象散曲线，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的摄像镜头的倍率色差曲线，其表示光线经由摄像镜头后在成像面上的不同的像高的偏差。根据图12A至图12C可知，实施例6所给出的摄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14C描述本申请的上述摄像镜头的实施例7。 图13示出了根据本申请实施例7的摄像镜头的结构示意图。如图13所示，根据实施例7的摄像镜头包括分别具有物侧面和像侧面的第一至第六透镜L1-L6。
下表19中示出了实施例7中的各透镜的有效焦距f1至f6、摄像镜头的总有效焦距f、摄像透镜的总长度TTL以及摄像镜头的最大视场角的一半HFOV。
f1(mm) -3.46 f(mm) 1.88
f2(mm) 1.89 Fno 2.54
f3(mm) 1.97 TTL(mm) 3.70
f4(mm) -2.58 HFOV(°) 60.002
f5(mm) 2.76    
f6(mm) -4.49    
表19
参照表19，第三透镜L3的有效焦距f3与第五透镜L5的有效焦距f5之间可满足f3/f5＝0.713。第四透镜L4的有效焦距为f4与摄像镜头的总有效焦距f之间可满足f4/f＝-1.369。摄像镜头的最大视场角的一半HFOV可设置为HFOV＝60.002°。
表20示出该实施例中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。表21示出了可用于该实施例中的各非球面透镜的各非球面S1-S12的高次项系数A4、A6、A8、A10、A12、A16和A18。
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1.4054 0.3861 1.544/56.11 -11.3154
S2 非球面 -6.0348 0.0651   -12.5751
S3 非球面 1.0075 0.3900 1.544/56.11 0.5777
S4 非球面 36.3309 0.0661   -95.0000
STO 球面 无穷 0.0962    
S5 非球面 -3.6848 0.3145 1.544/56.11 -75.4084
S6 非球面 -0.8573 0.0500   -1.5296
S7 非球面 -6.0554 0.2000 1.651/21.52 -51.2037
S8 非球面 2.3802 0.3337   -2.3885
S9 非球面 -0.8919 0.4804 1.544/56.11 -3.5861
S10 非球面 -0.6669 0.0500   -1.6200
S11 非球面 0.8884 0.3000 1.535/55.8 -1.8910
S12 非球面 0.5727 0.4434   -2.9244
S13 球面 无穷 0.2100 1.517/64.17  
S14 球面 无穷 0.3101    
S15 球面 无穷      
表20
参照表20和表21，第二透镜L2在光轴上的中心厚度CT2与第三透镜L3在光轴上的中心厚度CT3之间满足CT2/CT3＝1.240。第五透镜物侧面S9的曲率半径R9和第五透镜像侧面S10的曲率半径R10之间满足R9/R10＝1.337。
面号 A4 A6 A8 A10 A12 A14 A16 A18
S1 1.4012E-01 -2.5794E-01 3.8870E-01 -3.8549E-01 2.3624E-01 -7.1142E-02 -2.9631E-04 3.8721E-03
S2 1.1145E+00 -5.5487E+00 2.6038E+01 -9.0905E+01 2.2943F+02 -3.8627E+02 3.8770E+02 -1.7359E+02
S3 4.6418E-01 -4.7150E+00 2.1303E+01 -5.5588E+01 4.8918E+01 9.1011E+01 -1.9732E+02 0.0000E+00
S4 -4.4373E-02 -4.3674E-01 2.7998E+00 -2.8289E+01 1.4183E+02 -3.7990E+02 3.9447E+02 0.0000E+00
S5 -5.0376E-01 -6.4698E-01 -7.9298E+00 7.9685E+01 -4.5336E+02 6.1669E+02 1.1783E+03 0.0000E+00
S6 -4.4936E-02 -3.2712E+00 2.3232E+01 -1.8214E+02 9.5816E+02 -2.7934E+03 3.2977E+03 0.0000E+00
S7 -5.4553E-01 -6.2975E-01 1.4931E+00 7.0305E+00 -3.3954E+01 4.4797E+01 -2.9208E+01 0.0000E+00
S8 -6.1514E-01 1.3735E+00 -4.5316E+00 1.3125E+01 -2.4149E+01 2.5160E+01 -1.0988E+01 0.0000E+00
S9 6.8351E-02 -2.8776E+00 1.3714E+01 -3.1667E+01 4.4693E+01 -3.7711E+01 1.7027E+01 -3.1334E+00
S10 -5.4466E-02 -1.3016E+00 5.7316E+00 -1.6695E+01 3.3786E+01 -3.8292E+01 2.1773E+01 -4.8777E+00
S11 -8.6643E-01 6.7868E-01 -1.4097E-01 -1.7468E-01 1.6877E-01 -6.6835E-02 1.3074E-02 -1.0381E-03
S12 -4.7558E-01 4.7598E-01 -3.4029E-01 1.5979E-01 -4.5153E-02 5.6605E-03 2.4621E-04 -9.6221E-05
表21
在该实施例中，第一透镜L1沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间满足TTL/ImgH＝1.617。第三透镜L3与第四透镜L4的轴上间隔距离T34和第五透镜L5与第六透镜L6的轴上间隔距离T56之间满足T34/T56＝1。第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像面的轴上距离TTL之间满足SAG51/TTL＝-0.141。第一透镜物侧面S1的有效半径DT11与第五透镜像侧面S10的有效半径DT52之间满足DT11/DT52＝1.076。
图14A示出了实施例7的摄像镜头的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图14B示出了实施例7的摄像镜头的象散曲线，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的摄像镜头的倍率色差曲线，其表示光线经由摄像镜头后在成像面上的不同的像高的偏差。根据图14A至图14C可知，实施例7所给出的摄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16C描述本申请的上述摄像镜头的实施例8。图15示出了根据本申请实施例8的摄像镜头的结构示意图。如图15所示，根据实施例8的摄像镜头包括分别具有物侧面和像侧面的第一至第六透镜L1-L6。
下表22中示出了实施例8中的各透镜的有效焦距f1至f6、摄像镜头的总有效焦距f、摄像透镜的总长度TTL以及摄像镜头的最大视场角的一半HFOV。
f1(mm) -3.69 f(mm) 1.86
f2(mm) 1.95 Fno 2.38
f3(mm) 2.14 TTL(mm) 3.79
f4(mm) -2.93 HFOV(°) 59.993
f5(mm) 2.35    
f6(mm) -4.26    
表22
参照表22，第三透镜L3的有效焦距f3与第五透镜L5的有效焦距f5之间可满足f3/f5＝0.915。第四透镜L4的有效焦距为f4与摄像镜头的总有效焦距f之间可满足f4/f＝-1.573。摄像镜头的最大视场角的一半HFOV可设置为HFOV＝59.993°。
表23示出该实施例中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1.3718 0.3353 APL5514 -12.6458
S2 非球面 -4.6743 0.0821   -72.9675
S3 非球面 1.0832 0.3917 APL5514 0.6682
S4 非球面 -52.9416 0.0999   -95.0000
STO 球面 无穷 0.1179    
S5 非球面 -3.4920 0.3200 APL5514 46.3021
S6 非球面 -0.9052 0.0500   -1.3887
S7 非球面 -5.1987 0.2306 EP7000 38.7957
S8 非球面 3.0996 0.3027   0.0561
S9 非球面 -0.7731 0.5325 APL5514 -3.4263
S10 非球面 -0.5993 0.0500   -1.8249
S11 非球面 0.8685 0.2996 K26R -2.1503
S12 非球面 0.5537 0.4533   -3.5285
S13 球面 无穷 0.2100 BK7  
S14 球面 无穷 0.3165    
S15 球面 无穷      
表23
参照表20和表21，第二透镜L2在光轴上的中心厚度CT2与第三透镜L3在光轴上的中心厚度CT3之间满足CT2/CT3＝1.224。第五透镜物侧面S9的曲率半径R9和第五透镜像侧面S10的曲率半径R10之间满足R9/R10＝1.290。
在该实施例中，第一透镜L1沿着光轴从物侧面至成像面的轴上距离TTL与电子感光元件有效像素区域对角线长的一半ImgH之间满足TTL/ImgH＝1.660。第三透镜L3与第四透镜L4的轴上间隔距离T34和第五透镜L5与第六透镜L6的轴上间隔距离T56之间满足T34/T56＝1。第五透镜物侧面与光轴的交点至第五透镜物侧面的有效半径的顶点之间的轴上距离SAG51与第一透镜物侧面至成像面的轴上距离TTL之间满足SAG51/TTL＝-0.132。第一透镜物侧面S1的有效半径DT11与第五透镜像侧面S10的有效半径DT52之间满足DT11/DT52＝1.001。
表24示出了可用于该实施例中的各非球面透镜的各非球面S1-S12的高次项系数A4、A6、A8、A10、A12、A16和A18。
面号 A4 A6 A8 A10 A12 A14 A16 A18
S1 2.4959E-01 -7.3884E-01 1.5209E+00 -2.2518E+00 2.3956E+00 -1.7059E+00 7.1428E-01 -1.3113E-01
S2 1.4250E+00 -7.8587E+00 3.5120E+01 -1.1570E+02 2.6907E+02 -4.0410E+02 3.4799E+02 -1.2941E+02
S3 7.1558E-01 -6.7163E+00 3.5335E+01 -1.2728E+02 2.9606E+02 -3.7868E+02 1.7594E+02 0.0000E+00
S4 -2.4215E-02 -1.3819E-01 -1.8231E+00 2.0288E+01 -8.6393E+01 1.1316E+02 -2.8990E+00 0.0000E+00
S5 -2.5582E-01 3.6547E-01 -3.2642E+01 4.5086E+02 -3.7482E+03 1.6184E+04 -2.8849E+04 0.0000E+00
S6 -7.3036E-01 3.9338E+00 -2.9944E+01 9.6126E+01 -6.1460E+01 -7.4797E+02 1.7609E+03 0.0000E+00
S7 -1.1779E+00 5.4463E+00 -3.1498E+01 1.2605E+02 -3.5571E+02 6.3171E+02 -5.0433E+02 0.0000E+00
S8 -7.1213E-01 1.7165E+00 -3.7575E+00 4.3578E+00 -1.8032E+00 1.4672E+00 -1.9556E+00 0.0000E+00
S9 -8.6161E-03 -1.4199E+00 7.6147E+00 -8.7379E+00 -1.6853E+01 5.4953E+01 -5.3654E+01 1.8322E+01
S10 -8.5215E-02 -7.9044E-01 3.3533E+00 -8.0687E+00 1.5488E+01 -1.7596E+01 9.8969E+00 -2.1219E+00
S11 -7.2111E-01 7.9416E-01 -6.1503E-01 2.7949E-01 -5.1307E-02 -6.5225E-03 3.9919E-03 -4.3740E-04
S12 -3.4797E-01 3.7060E-01 -2.8663E-01 1.4436E-01 -4.6164E-02 8.2714E-03 -6.0590E-04 -2.2619E-06
表24
图16A示出了实施例8的摄像镜头的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图16B示出了实施例8的摄像镜头的象散曲线，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的摄像镜头的倍率色差曲线，其表示光线经由摄像镜头后在成像面上的不同的像高的偏差。根据图16A至图16C可知，实施例8所给出的摄像镜头能够实现良好的成像品质。
综上所述，实施例1至实施例8分别满足以下表25所示的关系。
条件式/实施例 1 2 3 4 5 6 7 8
HFOV(°) 60.003 59.884 59.889 60.005 60.008 60.002 60.002 59.993
f4/f -1.558 -1.457 -1.408 -1.437 -1.363 -1.336 -1.369 -1.573
TTL/ImgH 1.615 1.601 1.599 1.596 1.583 1.619 1.617 1.660
f3/f5 0.799 0.679 0.702 0.709 0.786 0.458 0.713 0.915
SAG51/TTL -0.137 -0.140 -0.142 -0.142 -0.144 -0.119 -0.141 -0.132
R9/R10 1.370 1.255 1.259 1.254 1.419 1.166 1.337 1.290
CT2/CT3 1.028 1.317 1.400 1.424 1.175 1.252 1.240 1.224
T34/T56 1.000 1.000 1.000 1.000 1.118 0.633 1.000 1.000
DT11/DT52 1.058 1.082 1.069 1.057 0.608 1.150 1.076 1.001
表25
本申请还提出了一种摄像装置，其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)。摄像装置可以是诸如数码相机的独立摄像设备，也可以是集成在诸如手机等移动电子设备上的摄像模块。该摄像装置装配有如上各实施例所述的摄像镜头。
以上参照附图对本申请的示例性实施例进行了描述。本领域技术人员应该理解，上述实施例仅是为了说明的目的而所举的示例，而不是用来限制本申请的范围。凡在本申请的教导和权利要求保护范围下所作的任何修改、等同替换等，均应包含在本申请要求保护的范围内。

Claims (20)

  1. 摄像镜头，所述摄像镜头沿着光轴从物侧至像侧依次包括第一透镜、多个后续透镜，以及
    感光元件，设置在成像面上，
    其特征在于，所述第一透镜具有负光焦度且其物侧面为凹面；以及
    所述第一透镜的物侧面至所述成像面的轴上距离TTL与所述感光元件的有效像素区域对角线长的一半ImgH之间满足：1.5＜TTL/ImgH＜1.7。
  2. 如权利要求1所述的摄像镜头，其特征在于，所述多个后续透镜从所述物侧至所述像侧依次包括：
    第二透镜，具有正光焦度或负光焦度，其像侧面为凹面；
    第三透镜，具有正光焦度，其物侧面为凹面，像侧面为凸面；
    第四透镜，具有负光焦度且物侧面为凹面；
    第五透镜，具有正光焦度，其物侧面为凹面，像侧面为凸面；以及
    第六透镜，具有正光焦度或负光焦度。
  3. 如权利要求2所述的摄像镜头，其特征在于，
    所述摄像镜头的最大视场角的一半HFOV满足：HFOV＞50°。
  4. 如权利要求2所述的摄像镜头，其特征在于，
    所述第二透镜在光轴上的中心厚度CT2与所述第三透镜在光轴上的中心厚度CT3之间满足：1＜CT2/CT3＜1.5。
  5. 如权利要求2所述的摄像镜头，其特征在于，
    所述第四透镜的有效焦距f4与所述摄像镜头的总有效焦距f之间满足：-2＜f4/f＜-1。
  6. 如权利要求2所述的摄像镜头，其特征在于，
    所述第三透镜的有效焦距f3与所述第五透镜的有效焦距f5之间满足：0.4＜f3/f5＜1。
  7. 如权利要求2所述的摄像镜头，其特征在于，
    所述第五透镜的物侧面和光轴的交点至所述第五透镜的物侧面的有效半径顶点之间的轴上距离SAG51与所述第一透镜的物侧面至成像面的轴上距离TTL之间满足：-0.2＜SAG51/TTL＜-0.1。
  8. 如权利要求2所述的摄像镜头，其特征在于，
    所述第五透镜的物侧面的曲率半径R9与所述第五透镜的像侧面的曲率半径R10之间满足：1＜R9/R10＜1.5。
  9. 如权利要求2所述的摄像镜头，其特征在于，
    所述第三透镜和所述第四透镜之间的轴上间隔距离T34与所述第五透镜和所述第六透镜之间的轴上间隔距离T56之间满足：0.5＜T34/T56＜1.2。
  10. 如权利要求2所述的摄像镜头，其特征在于，
    所述第一透镜的物侧面的有效半径DT11与所述第五透镜的像侧面的有效半径DT52之间满足：0.5＜DT11/DT52＜1.1。
  11. 摄像镜头，所述摄像镜头沿着光轴从物侧至像侧依次包括：
    第一透镜，具有负光焦度且其物侧面为凹面；
    第二透镜，具有正光焦度或负光焦度，其像侧面为凹面；
    第三透镜，具有正光焦度，其物侧面为凹面，像侧面为凸面；
    第四透镜，具有负光焦度且物侧面为凹面；
    第五透镜，具有正光焦度，其物侧面为凹面，像侧面为凸面；以及
    第六透镜，具有正光焦度或负光焦度，
    其中，所述第三透镜和所述第四透镜之间的轴上间隔距离T34与所述第五透镜和所述第六透镜之间的轴上间隔距离T56之间满足：0.5＜T34/T56＜1.2。
  12. 如权利要求11所述的摄像镜头，其特征在于，还包括：
    感光元件，设置在成像面上，
    其中，所述第一透镜的物侧面至成像面的轴上距离TTL与所述感光元件的有效像素区域对角线长的一半ImgH之间满足：1.5＜TTL/ImgH＜1.7。
  13. 如权利要求11或12所述的摄像镜头，其特征在于，
    所述摄像镜头的最大视场角的一半HFOV满足：HFOV＞50°。
  14. 如权利要求11所述的摄像镜头，其特征在于，
    所述第二透镜在光轴上的中心厚度CT2与所述第三透镜在光轴上的中心厚度CT3之间满足：1＜CT2/CT3＜1.5。
  15. 如权利要求11所述的摄像镜头，其特征在于，
    所述第四透镜的有效焦距f4与所述摄像镜头的总有效焦距f之间满足：-2＜f4/f＜-1。
  16. 如权利要求11所述的摄像镜头，其特征在于，
    所述第三透镜的有效焦距f3与所述第五透镜的有效焦距f5之间满足：0.4＜f3/f5＜1。
  17. 如权利要求11所述的摄像镜头，其特征在于，
    所述第五透镜的物侧面和光轴的交点至所述第五透镜的物侧面的有效半径顶点之间的轴上距离SAG51与所述第一透镜的物侧面至成像面的轴上距离TTL之间满足：-0.2＜SAG51/TTL＜-0.1。
  18. 如权利要求11所述的摄像镜头，其特征在于，
    所述第五透镜的物侧面的曲率半径R9与所述第五透镜的像侧面的曲率半径R10之间满足：1＜R9/R10＜1.5。
  19. 如权利要求11所述的摄像镜头，其特征在于，
    所述第一透镜的物侧面的有效半径DT11与所述第五透镜的像侧面的有效半径DT52之间满足：0.5＜DT11/DT52＜1.1。
  20. 摄像装置，其特征在于，所述摄像装置装备有如权利要求1-9中任一项所述的摄像镜头。
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