WO2018188236A1 - 摄像镜头光学成像系统 - Google Patents

摄像镜头光学成像系统 Download PDF

Info

Publication number
WO2018188236A1
WO2018188236A1 PCT/CN2017/096589 CN2017096589W WO2018188236A1 WO 2018188236 A1 WO2018188236 A1 WO 2018188236A1 CN 2017096589 W CN2017096589 W CN 2017096589W WO 2018188236 A1 WO2018188236 A1 WO 2018188236A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
imaging system
optical imaging
focal length
optical
Prior art date
Application number
PCT/CN2017/096589
Other languages
English (en)
French (fr)
Inventor
黄林
Original Assignee
浙江舜宇光学有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201720379889.8U external-priority patent/CN206990886U/zh
Priority claimed from CN201710236524.4A external-priority patent/CN106802477B/zh
Application filed by 浙江舜宇光学有限公司 filed Critical 浙江舜宇光学有限公司
Priority to US15/772,860 priority Critical patent/US10921557B2/en
Publication of WO2018188236A1 publication Critical patent/WO2018188236A1/zh

Links

Images

Classifications

    • 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
    • G02B13/004—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 four lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
    • G02B13/146—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation with corrections for use in multiple wavelength bands, such as infrared and visible light, e.g. FLIR systems

Definitions

  • the present application relates to an optical imaging system and, more particularly, to an optical imaging system including a plurality of lenses.
  • the photosensitive element of a general optical system is nothing more than a photosensitive coupling element (CCD) or a complementary oxidized metal semiconductor element (CMOS).
  • CCD photosensitive coupling element
  • CMOS complementary oxidized metal semiconductor element
  • the optical system tends to be higher in pixels, and the pixel size of the chip is higher. The smaller the size, the higher the imaging quality requirements for the matching optical system.
  • the requirements for lenses with iris recognition are getting higher and higher, not only to ensure compact structure, but also to have high brightness and resolution, so that the recognition accuracy of the lens is greatly improved.
  • the present application aims to provide a compact optical imaging system with high brightness and high resolution.
  • an optical imaging system may be sequentially disposed from the object side to the imaging side along the optical axis: a first lens, a second lens, a third lens, and a fourth lens.
  • the first lens may have positive refractive power
  • the object side surface is a convex surface
  • the image side surface may be a concave surface
  • the object side surface of the second lens is a convex surface
  • the image side surface may be a concave surface
  • the third lens and the fourth lens may have a negative power; wherein the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens and the effective focal length f of the optical imaging system satisfy: -0.8 ⁇ (f1 + f4) ) / f ⁇ 0, for example: -0.772 ⁇ (f1 + f4) / f ⁇ -0.356.
  • an optical imaging system may be sequentially disposed from the object side to the imaging side along the optical axis: a first lens, a second lens, a third lens, and a fourth lens.
  • the first lens may have a positive power
  • the object side is a convex surface
  • the image side may be a concave surface
  • the object side of the second lens is a convex surface
  • the image side may be a concave surface
  • the third lens and the fourth lens may have a negative optical focus degree.
  • the center thickness CT1 of the first lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis satisfy: 0.4 ⁇ CT4 / CT1 ⁇ 0.8, for example, 0.498 ⁇ CT4 / CT1 ⁇ 0.634.
  • an aperture stop is disposed between the subject and the second lens.
  • the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 1 ⁇ f3 / f4 ⁇ 3, for example: 1.259 ⁇ f3 / f4 ⁇ 2.710.
  • the effective radius DT11 of the side surface of the first lens object and the effective radius DT21 of the side surface of the second lens object satisfy: 1.2 ⁇ DT11 / DT21 ⁇ 1.8, for example: 1.269 ⁇ DT11 / DT21 ⁇ 1.714.
  • the center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis satisfy: 2.5 ⁇ CT1/CT3 ⁇ 3.1, for example: 2.538 ⁇ CT1/CT3 ⁇ 3.06.
  • the radius of curvature R2 of the side surface of the first lens image and the radius of curvature R3 of the side surface of the second lens object satisfy: 1.3 ⁇ R2 / R3 ⁇ 1.9, for example: 1.393 ⁇ R2 / R3 ⁇ 1.870.
  • the radius of curvature R2 of the first lens image side and the radius of curvature R4 of the second lens image side satisfy: 1 ⁇ R2 / R4 ⁇ 2.1, for example: 1.28 ⁇ R2 / R4 ⁇ 2.059.
  • the distance TTL between the side of the first lens object to the imaging plane on the optical axis and the effective focal length f of the optical imaging system is satisfied: TTL / f ⁇ 1, for example: TTL / f ⁇ 0.941.
  • the on-axis distance SAG32 between the apex of the effective radius of the mirror side and the center thickness CT3 of the third lens on the optical axis satisfy: -0.7 ⁇ SAG32/CT3 ⁇ -0.3, for example: -0.601 ⁇ SAG32/CT3 ⁇ -0.413 .
  • the distance TTL between the side of the first lens object and the imaging surface on the optical axis and the center thickness CT4 of the fourth lens on the optical axis may satisfy: CT4/TTL ⁇ 0.1, for example: CT4/TTL ⁇ 0.093.
  • the effective radius DT42 of the side of the fourth lens image satisfies half of the diagonal length ImgH of the effective pixel area of the electronic photosensitive element: 0.5 ⁇ DT42 / ImgH ⁇ 0.9, for example: 0.742 ⁇ DT42 / ImgH ⁇ 0.784.
  • the present application employs a plurality of (for example, four) lenses, and the optical imaging system can have at least one of the following advantages by rationally distributing the power of each lens, the surface shape, the on-axis spacing between the lenses, and the like:
  • FIG. 1 shows a schematic structural view of an optical imaging system of Embodiment 1 of the present application
  • FIG. 2A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 1;
  • 2D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 1;
  • FIG. 3 is a schematic structural view showing an optical imaging system of Embodiment 2 of the present application.
  • 4A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 2;
  • 4D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 2;
  • FIG. 5 is a schematic structural view showing an optical imaging system of Embodiment 3 of the present application.
  • 6A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 3.
  • 6B shows an astigmatism curve of the optical imaging system of Embodiment 3.
  • 6C shows a distortion curve of the optical imaging system of Embodiment 3.
  • 6D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 3.
  • 6E shows a phase contrast curve of the optical imaging system of Embodiment 3.
  • FIG. 7 is a schematic structural view showing an optical imaging system of Embodiment 4 of the present application.
  • FIG. 9 is a schematic structural view showing an optical imaging system of Embodiment 5 of the present application.
  • 10A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 5;
  • Figure 10B shows an astigmatism curve of the optical imaging system of Example 5.
  • FIG. 10C shows a distortion curve of the optical imaging system of Embodiment 5.
  • 10D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 5;
  • FIG. 10E shows a phase contrast curve of the optical imaging system of Example 5.
  • first, second, third, etc. are used to distinguish one feature from another, and do not represent any limitation of the feature.
  • first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
  • the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation, but it should be understood that the dimensions of the respective components are not limited by the drawings, but may be appropriately adjusted within a certain range.
  • the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the spherical or aspherical shape shown in the drawings.
  • the drawings are only examples and are not to scale.
  • the paraxial region refers to a region near the optical axis.
  • the first lens is the lens closest to the object and the fourth 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 application provides an optical imaging system.
  • the optical imaging system may be provided with a first lens, a second lens, a third lens, and a fourth lens in order from the object side to the imaging side along the optical axis.
  • the optical imaging system can have an effective focal length f.
  • the first lens may have a positive power
  • the object side may be a convex surface
  • the image side may be a concave surface.
  • the first lens having positive power has a large refractive power, and setting the image side of the first lens to a concave surface is advantageous for shortening the overall length of the optical imaging system and reducing the volume of the optical imaging system, thereby achieving miniaturization of the lens. .
  • the second lens has a power, and the object side surface may be a convex surface, and the image side surface may be a concave surface.
  • the second lens with power can reduce the angle between the off-axis field of view and the optical axis, thereby improving the astigmatism of the off-axis field of view, providing imaging quality for the optical imaging system.
  • the third lens and the fourth lens have negative power.
  • an optical imaging system further includes an aperture stop disposed between the subject and the second lens.
  • the optical imaging system according to the present application further includes a filter disposed between the fourth lens and the imaging surface, the filter being an IR infrared filter having a band pass wavelength ranging, for example, from 750 nm to 900 nm.
  • the bandpass filter is in a certain band, only a small segment in the middle is a high transmittance passband, and on both sides of the passband is a high reflectance cutoff band.
  • the proper passage of the infrared band can help the system not to introduce the influence of chromatic aberration, control the diameter of the diffuse spot, and the infrared band is beneficial to eliminate the interference of ambient visible light, thereby improving the imaging quality of the lens. With such a configuration, efficient identification of the optical imaging system over the effective spectral range is ensured.
  • the distance TTL between the side of the first lens object to the imaging surface on the optical axis and the effective focal length f of the optical imaging system may satisfy: TTL/f ⁇ 1, and more specifically, TTL/f ⁇ 0.941.
  • the optical imaging system is miniaturized while ensuring the effective recognition accuracy of the optical imaging system, while maintaining the optical imaging system with a longer focal length and a wider depth of focus.
  • the distance TTL of the first lens object side to the imaging surface on the optical axis and the center thickness CT4 of the fourth lens on the optical axis may satisfy: CT4/TTL ⁇ 0.1, more specifically, Meet CT4/TTL ⁇ 0.093.
  • the effective radius DT11 and the second side of the first lens object side can satisfy: 1.2 ⁇ DT11 / DT21 ⁇ 1.8, and more specifically, 1.269 ⁇ DT11 / DT21 ⁇ 1.714 can be satisfied.
  • Such a configuration is more advantageous for structural positioning stability during assembly, reduces bending deformation caused by a difference in positioning aperture between the first lens and the second lens, and at the same time improves the resolution of the lens.
  • the radius of curvature R2 of the first lens image side and the radius of curvature R3 of the second lens object side may satisfy: 1.3 ⁇ R2/R3 ⁇ 1.9, and more specifically, 1.393 ⁇ R2/R3 may be satisfied. ⁇ 1.870.
  • the radius of curvature R2 of the first lens image side and the radius of curvature R4 of the second lens image side may satisfy: 1 ⁇ R2/R4 ⁇ 2.1, and more specifically, 1.28 ⁇ R2/R4 ⁇ 2.059.
  • the center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis may satisfy: 2.5 ⁇ CT1/CT3 ⁇ 3.1, and more specifically, 2.538 ⁇ CT1/CT3 ⁇ 3.06.
  • the center thickness CT1 of the first lens on the optical axis and the center thickness CT4 of the fourth lens on the optical axis may satisfy: 0.4 ⁇ CT4/CT1 ⁇ 0.8, and more specifically, 0.498 ⁇ CT4/CT1 ⁇ 0.634.
  • the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens and the effective focal length f of the optical imaging system may satisfy: -0.8 ⁇ (f1+f4)/f ⁇ 0, more specific Ground, can satisfy -0.772 ⁇ (f1 + f4) / f ⁇ -0.356.
  • the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy: 1 ⁇ f3 / f4 ⁇ 3, and more specifically, 1.259 ⁇ f3 / f4 ⁇ 2.710.
  • Reasonable distribution of the power of the third lens and the fourth lens ensures the magnification of the optical imaging system within the application range to ensure effective recognition accuracy; and can reduce aberrations and improve the resolution of the optical imaging system.
  • the on-axis distance SAG32 between the intersection of the third lens image side and the optical axis to the effective radius vertex of the third lens image side and the center thickness CT3 of the third lens on the optical axis may satisfy: -0.7 ⁇ SAG32 / CT3 ⁇ - 0.3, more specifically, -0.601 ⁇ SAG32 / CT3 ⁇ -0.413 can be satisfied.
  • the third lens thus configured has a large refractive power to the off-axis field of view, thereby facilitating shortening of the overall length of the lens. At the same time, such a configuration can also reduce aberrations and improve the resolution of the system.
  • the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens and the effective focal length f of the optical imaging system may satisfy: -4.5 ⁇ (f3 + f4) / f ⁇ -3, more Specifically, -2.454 ⁇ (f3 + f4) / f ⁇ - 3.386 can be satisfied.
  • Reasonably assigning the power of the third lens and the fourth lens to the effective focal length f of the imaging system ensures the magnification of the optical imaging system within the application range, and ensures effective recognition accuracy.
  • the effective radius DT42 of the side of the fourth lens image and the half ImgH of the diagonal length of the effective pixel area of the electronic photosensitive element may satisfy: 0.5 ⁇ DT42/ImgH ⁇ 0.9, and more specifically, may satisfy 0.742 ⁇ DT42 / ImgH ⁇ 0.784.
  • the optical imaging system may employ a plurality of lenses, such as four in the present application, but it should be understood that this is merely an example and not a limitation.
  • a compact optical imaging system with high brightness and high resolution can be provided.
  • 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 optical imaging system is not limited to including four lenses.
  • the optical imaging system can also include other numbers of lenses if desired.
  • FIG. 1 is a block diagram showing the structure of an optical imaging system according to Embodiment 1 of the present application.
  • Embodiment 1 of the optical imaging system includes four lenses L1-L4 sequentially arranged from the object side to the imaging side along the optical axis.
  • the first lens L1 has an object side surface S1 and an image side surface S2;
  • the second lens L2 has an object side surface S3 and an image side surface S4;
  • the third lens L3 has an object side surface S5 and an image side surface S6;
  • the fourth lens L4 has an object side surface S7 and an image Side S8.
  • the first lens may have a positive power, and the object side is a convex surface, and the image side may be a concave surface; the second lens may have a positive power or a negative power, and the object side is a convex surface, like The sides may be concave; and the third lens and the fourth lens may each have a negative power.
  • the optical imaging system further includes a filter L5 having an object side S9 and an image side surface S10, the filter being an IR infrared filter having a band pass wavelength ranging from 750 nm to 900 nm.
  • an aperture STO is also provided to mediate the amount of light entering. Light from the object sequentially passes through the respective surfaces S1 to S10 and is finally imaged on the imaging plane S11.
  • the effective focal lengths f1 to f4 of the lenses in Embodiment 1 are shown in Table 1 below.
  • TTL/f 0.940 is satisfied between the distance TTL of the first lens object side to the imaging plane on the optical axis and the effective focal length f of the optical imaging system.
  • Table 2 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this Example 1.
  • CT1/CT3 2.559 is satisfied between the center thickness CT1 of the first lens on the optical axis and the center thickness CT3 of the third lens on the optical axis.
  • R2/R3 1.497 is satisfied between the radius of curvature R2 of the side surface of the first lens image and the radius of curvature R3 of the side surface of the second lens object.
  • the radius of curvature R2 of the side of the first lens image and the side of the second lens image R2/R4 1.392 is satisfied between the curvature radii R4.
  • each aspherical surface type x is defined by the following formula:
  • x is the distance of the aspherical surface at height h from the optical axis, and the distance from the aspherical vertex is high;
  • k is the conic coefficient (given in Table 1 above);
  • Ai is the correction coefficient of the a-th order of the aspheric surface.
  • Table 3 shows the higher order coefficient A 4 , A 6 , A 8 , A 10 , A 12 , A 14 and A 16 of the respective spherical or aspheric surfaces S1 - S8 of the lenses usable in the embodiment 1. .
  • 2A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 1, which indicates that light of different wavelengths is deflected by a focus point after passing through the optical system.
  • 2B shows an astigmatism curve of the optical imaging system of Embodiment 1, which shows meridional field curvature and sagittal image plane curvature.
  • 2C shows a distortion curve of the optical imaging system of Embodiment 1, which represents distortion magnitude values in the case of different viewing angles.
  • 2D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 1, which shows the deviation of different image heights on the imaging plane after the light passes through the optical imaging system.
  • the optical imaging system according to Embodiment 1 can obtain a high-quality imaging effect of high luminance and high resolution while ensuring compactness.
  • Embodiment 2 of the above optical imaging system of the present application is described below with reference to FIGS. 3 to 4E.
  • the optical imaging system described in the respective embodiments is the same as the optical imaging system described in Embodiment 1.
  • a description similar to that of Embodiment 1 will be omitted.
  • FIG. 3 is a block diagram showing the structure of an optical imaging system according to Embodiment 2 of the present application.
  • the optical imaging system according to Embodiment 2 includes first to fourth lenses L1 - L4 having an object side and an image side, respectively.
  • the effective focal lengths f1 to f4 of the lenses in Embodiment 2 are shown in Table 4 below.
  • Table 5 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this Example 2.
  • Table 6 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 and A 16 of the respective spherical or aspheric surfaces S1 to S8 which can be used for the lenses in the second embodiment.
  • 4A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 2, which is represented Light of different wavelengths is deflected by the focus point after the optical system.
  • 4B shows an astigmatism curve of the optical imaging system of Embodiment 2, which shows meridional field curvature and sagittal image plane curvature.
  • 4C shows a distortion curve of the optical imaging system of Embodiment 2, which represents the distortion magnitude value in the case of different viewing angles.
  • 4D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 2, which shows the deviation of different image heights on the imaging plane after the light passes through the optical imaging system.
  • FIGS. 4A to 4E shows a phase contrast curve of the optical imaging system of Embodiment 2, which shows the degree of brightness of the image on the optical axis of the lens, that is, the center of the screen.
  • the optical imaging system according to Embodiment 2 can obtain a high-quality imaging effect of high luminance and high resolution while ensuring compactness.
  • FIG. 5 is a block diagram showing the structure of an optical imaging system according to Embodiment 3 of the present application.
  • the optical imaging system according to Embodiment 3 includes first to fourth lenses L1 - L4 having an object side and an image side, respectively.
  • the effective focal lengths f1 to f4 of the 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 Example 3.
  • Table 9 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 and A 16 of the respective spherical or aspheric surfaces S1 to S8 which can be used for the lenses in the third embodiment.
  • 6A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 3, which shows that light of different wavelengths is deflected by a focus point after passing through the optical system.
  • Fig. 6B shows an astigmatism curve of the optical imaging system of Embodiment 3, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 6C shows a distortion curve of the optical imaging system of Embodiment 3, which shows distortion magnitude values in the case of different viewing angles.
  • 6D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 3, which shows the deviation of different image heights on the imaging plane after the light passes through the optical imaging system.
  • Fig. 6A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 3, which shows that light of different wavelengths is deflected by a focus point after passing through the optical system.
  • Fig. 6B shows an astigmatism curve of the optical imaging system of Embod
  • FIGS. 6A to 6E shows a phase contrast curve of the optical imaging system of Embodiment 3, which shows the degree of brightness of the image on the optical axis of the lens, that is, the center of the screen.
  • the optical imaging system according to Embodiment 3 can obtain a high-quality imaging effect of high luminance and high resolution while ensuring compactness.
  • FIG. 7 is a block diagram showing the structure of an optical imaging system according to Embodiment 4 of the present application.
  • the optical imaging system according to Embodiment 4 includes first to fourth lenses L1 - L4 having an object side and an image side, respectively.
  • the effective focal lengths f1 to f4 of the 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 Example 4.
  • Table 12 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 and A 16 of the respective spherical or aspheric surfaces S1 to S8 which can be used for the respective lenses in the embodiment 4.
  • Fig. 8A shows an axial chromatic aberration curve of the optical imaging system 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 optical imaging system of Embodiment 4, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 8C shows a distortion curve of the optical imaging system of Embodiment 4, which shows distortion magnitude values in the case of different viewing angles.
  • Fig. 8D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 4, which shows the deviation of different image heights on the imaging plane after the light passes through the optical imaging system.
  • Fig. 8A shows an axial chromatic aberration curve of the optical imaging system 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 optical imaging
  • Embodiment 4 shows a phase contrast curve of the optical imaging system of Embodiment 4, which shows the brightness of the image on the optical axis of the lens, that is, the center of the screen.
  • the optical imaging system according to Embodiment 4 can obtain a high-quality imaging effect of high luminance and high resolution while ensuring compactness.
  • FIG. 9 is a block diagram showing the structure of an optical imaging system according to Embodiment 5 of the present application.
  • the optical imaging system according to Embodiment 5 includes a body having an object side and an image side, respectively.
  • the effective focal lengths f1 to f4 of the lenses in Embodiment 5 are shown in Table 13 below.
  • Table 14 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens in this Example 5.
  • Table 15 shows the high order term coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 and A 16 of the respective spherical or aspheric surfaces S1 to S8 which can be used for the lenses in the embodiment 5.
  • Fig. 10A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 5, which shows that the light of different wavelengths is deviated from the focus point after passing through the optical system.
  • Fig. 10B shows an astigmatism curve of the optical imaging system of Embodiment 5, which shows meridional field curvature and sagittal image plane curvature.
  • Fig. 10C shows a distortion curve of the optical imaging system of Embodiment 5, which shows distortion magnitude values in the case of different viewing angles.
  • Fig. 10D shows a magnification chromatic aberration curve of the optical imaging system of Embodiment 5, which shows the deviation of different image heights on the imaging plane after the light passes through the optical imaging system.
  • Fig. 10A shows an axial chromatic aberration curve of the optical imaging system of Embodiment 5, which shows that the light of different wavelengths is deviated from the focus point after passing through the optical system.
  • Fig. 10B shows an astigmatism curve of the optical imaging
  • FIGS. 10A to 10E shows a phase contrast curve of the optical imaging system of Embodiment 5, which shows the degree of brightness of the image on the optical axis of the lens, that is, the center of the screen.
  • the optical imaging system according to Embodiment 5 can obtain a high-quality imaging effect of high luminance and high resolution while ensuring compactness.
  • CT4/CT1 0.590 0.527 0.634 0.518 0.498 DT11/DT21 1.346 1.271 1.269 1.470 1.714 DT42/ImgH 0.747 0.744 0.742 0.782 0.784 SAG32/CT3 -0.413 -0.492 -0.458 -0.601 -0.481 TTL/f 0.940 0.941 0.939 0.940 0.934

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Lenses (AREA)

Abstract

一种摄像镜头光学成像系统，该光学成像系统沿着光轴从物侧至成像侧依次设置有：第一透镜(L1)，具有正光焦度，其物侧面为凸面，像侧面为凹面；第二透镜(L2)，其物侧面为凸面，像侧面为凸面；第三透镜(L3)，具有负光焦度；以及第四透镜(L4)，具有负光焦度；其中，第一透镜(L1)的焦距f1和第四透镜(L4)的有效焦距f4与光学成像系统的有效焦距f之间满足：-0.8＜(f1+f4)/f＜0。

Description

摄像镜头光学成像系统
相关申请的交叉引用
本申请要求于2017年4月12日提交于中国国家知识产权局(SIPO)的、第201710236524.4号以及第201720379889.8号中国专利申请的优先权和权益，这两个中国专利申请的全部内容通过引用并入本文。
技术领域
本申请涉及一种光学成像系统，更具体地，涉及一种包括多片镜片的光学成像系统。
背景技术
近年来，随着科技的发展，便携式电子产品逐步兴起，特别是具有摄像功能的便携式电子产品得到人们更多的青睐。一般光学系统的感光元件不外乎是感光耦合元件(CCD)或互补性氧化金属半导体元件(CMOS)两种，随着半导体制程技术的精进，光学系统趋向于更高像素，芯片的像素尺寸越来越小，对相配套的光学系统的成像质量要求也越来越高。特别是在安防领域，对带有虹膜识别的镜头要求也越来越高，不仅需要保证结构紧凑，还需拥有较高的光亮度和解像力，使得镜头的识别精度大大提高。
发明内容
本申请旨在提供一种高亮度、高解像力的紧凑型光学成像系统。
根据本申请的一个方面，提供了一种光学成像系统。该光学成像系统沿着光轴从物侧至成像侧可依次设置有：第一透镜、第二透镜、第三透镜、第四透镜。其中，第一透镜可具有正光焦度，其物侧面为凸面，像侧面可为凹面；第二透镜的物侧面为凸面，像侧面可为凹面； 第三透镜和第四透镜可具有负光焦度；其中，第一透镜的有效焦距f1和第四透镜的有效焦距f4与光学成像系统的有效焦距f之间满足：-0.8＜(f1+f4)/f＜0，例如：-0.772≤(f1+f4)/f≤-0.356。
根据本申请的另一方面，提供了一种光学成像系统。该光学成像系统沿着光轴从物侧至成像侧可依次设置有：第一透镜、第二透镜、第三透镜、第四透镜。其中，第一透镜可具有正光焦度，其物侧面为凸面，像侧面可为凹面；第二透镜的物侧面为凸面，像侧面可为凹面；第三透镜和第四透镜可具有负光焦度。第一透镜在光轴上的中心厚度CT1与第四透镜在光轴上的中心厚度CT4之间满足：0.4＜CT4/CT1＜0.8，例如：0.498≤CT4/CT1≤0.634。
根据本申请的实施方式，在被摄物与第二透镜之间设置有孔径光阑。
根据本申请的实施方式，第三透镜的有效焦距f3与第四透镜的有效焦距f4之间满足：1＜f3/f4＜3，例如：1.259≤f3/f4≤2.710。
根据本申请的实施方式，第一透镜物侧面的有效半径DT11与第二透镜物侧面的有效半径DT21之间满足：1.2＜DT11/DT21＜1.8，例如：1.269≤DT11/DT21≤1.714。
根据本申请的实施方式，第一透镜在光轴上的中心厚度CT1与第三透镜在光轴上的中心厚度CT3之间满足：2.5＜CT1/CT3＜3.1，例如：2.538≤CT1/CT3≤3.06。
根据本申请的实施方式，第一透镜像侧面的曲率半径R2与第二透镜物侧面的曲率半径R3之间满足：1.3＜R2/R3＜1.9，例如：1.393≤R2/R3≤1.870。
根据本申请的实施方式，第一透镜像侧面的曲率半径R2与第二透镜像侧面的曲率半径R4之间满足：1＜R2/R4＜2.1，例如：1.28≤R2/R4≤2.059。
根据本申请的实施方式，第一透镜物侧面至成像面在光轴上的距离TTL与光学成像系统的有效焦距f之间满足：TTL/f＜1，例如：TTL/f≤0.941。
根据本申请的实施方式，第三透镜像侧面和光轴的交点至第三透 镜像侧面的有效半径顶点之间的轴上距离SAG32与第三透镜在光轴上的中心厚度CT3之间满足：-0.7＜SAG32/CT3＜-0.3，例如：-0.601≤SAG32/CT3≤-0.413。
此外，第一透镜物侧面至成像面在光轴上的距离TTL与第四透镜在光轴上的中心厚度CT4之间可满足：CT4/TTL＜0.1，例如：CT4/TTL≤0.093。
根据本申请的实施方式，第四透镜像侧面的有效半径DT42与电子光感元件有效像素区域对角线长的一半ImgH之间满足：0.5＜DT42/ImgH＜0.9，例如：0.742≤DT42/ImgH≤0.784。
本申请采用了多片(例如，四片)透镜，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，可使光学成像系统具有以下至少一个优点：
有效扩大镜头孔径；
缩短镜头总长度；
保证镜头的有效通光直径；
保证系统的紧凑性；
校正了各类像差；以及
提高镜头的解析度与成像品质。
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示出了本申请的实施例1的光学成像系统的示意性结构图；
图2A示出了实施例1的光学成像系统的轴上色差曲线；
图2B示出了实施例1的光学成像系统的象散曲线；
图2C示出了实施例1的光学成像系统的畸变曲线；
图2D示出了实施例1的光学成像系统的倍率色差曲线；
图2E示出了实施例1的光学成像系统的相对照度曲线；
图3示出了本申请的实施例2的光学成像系统的示意性结构图；
图4A示出了实施例2的光学成像系统的轴上色差曲线；
图4B示出了实施例2的光学成像系统的象散曲线；
图4C示出了实施例2的光学成像系统的畸变曲线；
图4D示出了实施例2的光学成像系统的倍率色差曲线；
图4E示出了实施例2的光学成像系统的相对照度曲线；
图5示出了本申请的实施例3的光学成像系统的示意性结构图；
图6A示出了实施例3的光学成像系统的轴上色差曲线；
图6B示出了实施例3的光学成像系统的象散曲线；
图6C示出了实施例3的光学成像系统的畸变曲线；
图6D示出了实施例3的光学成像系统的倍率色差曲线；
图6E示出了实施例3的光学成像系统的相对照度曲线；
图7示出了本申请的实施例4的光学成像系统的示意性结构图；
图8A示出了实施例4的光学成像系统的轴上色差曲线；
图8B示出了实施例4的光学成像系统的象散曲线；
图8C示出了实施例4的光学成像系统的畸变曲线；
图8D示出了实施例4的光学成像系统的倍率色差曲线；
图8E示出了实施例4的光学成像系统的相对照度曲线；
图9示出了本申请的实施例5的光学成像系统的示意性结构图；
图10A示出了实施例5的光学成像系统的轴上色差曲线；
图10B示出了实施例5的光学成像系统的象散曲线；
图10C示出了实施例5的光学成像系统的畸变曲线；
图10D示出了实施例5的光学成像系统的倍率色差曲线；
图10E示出了实施例5的光学成像系统的相对照度曲线。
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，但应理解各部件的尺寸不由附图限制，而是可在一定的范围内适当调整。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四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，但不排除存在或添加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/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。
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。
本申请提供了一种光学成像系统。根据本申请的示例性实施方式，该光学成像系统沿着光轴从物侧至成像侧可依次设置有第一透镜、第二透镜、第三透镜、第四透镜。该光学成像系统可具有有效焦距f。
在示例性实施方式中，第一透镜可具有正光焦度，其物侧面可为凸面，像侧面可为凹面。具有正光焦度的第一透镜具有较大的折光能力，并且将第一透镜的像侧面设置为凹面有利于缩短光学成像系统的整体长度，减小光学成像系统的体积，从而实现镜头的小型化。
第二透镜具有光焦度，其物侧面可为凸面，像侧面可为凹面。具有光焦度的第二透镜可以减小轴外视场在光线与光轴之间的夹角，从而改善轴外视场的象散，提供光学成像系统的成像品质。
第三透镜和第四透镜具有负光焦度。
在示例性实施方式中，根据本申请的光学成像系统，还包括设置在被摄物与第二透镜之间的孔径光阑。根据本申请的光学成像系统，还包括设置在第四透镜与成像面之间的滤光片，该滤光片为IR红外滤光片，带通波长范围例如为750nm-900nm。带通滤光片在一定的波段内，只有中间一小段是高透射率的通带，而在通带的两侧，是高反射率的截止带。红外波段的适当通过，可有利于系统不引入色差的影响，控制弥散斑直径，同时红外波段有利于消除环境可见光的干扰，从而提升镜头的成像品质。通过这样的配置，保证了光学成像系统在有效光谱范围内的有效识别。
在示例性实施方式中，第一透镜物侧面至成像面在光轴上的距离TTL与光学成像系统的有效焦距f之间可满足：TTL/f＜1，更具体地，可满足TTL/f≤0.941。在确保光学成像系统有效识别精度的情况下，使光学成像系统的尺寸小型化，同时使光学成像系统保持较长的焦距，具有更宽的焦深。
在示例性实施方式中，第一透镜物侧面至成像面在光轴上的距离TTL与第四透镜在光轴上的中心厚度CT4之间可满足：CT4/TTL＜0.1，更具体地，可满足CT4/TTL≤0.093。通过合理配置镜片形状与位置，可有效提升周边相对照度。
在示例性实施方式中，第一透镜物侧面的有效半径DT11与第二 透镜物侧面的有效半径DT21之间可满足：1.2＜DT11/DT21＜1.8，更具体地，可满足1.269≤DT11/DT21≤1.714。这样的配置，在组装时更有利于结构定位稳定性，降低由第一透镜与第二透镜定位口径差造成的弯曲变形，同时还可提升镜头的解像力。
在示例性实施方式中，第一透镜像侧面的曲率半径R2与第二透镜物侧面的曲率半径R3之间可满足：1.3＜R2/R3＜1.9，更具体地，可满足1.393≤R2/R3≤1.870。通过合理地配置曲率半径和镜片形状，能够提升相对照度，有利于修正像差，特别是减小彗差，从而使得光学成像系统具有高成像品质。
在示例性实施方式中，第一透镜像侧面的曲率半径R2与第二透镜像侧面的曲率半径R4之间可满足：1＜R2/R4＜2.1，更具体地，可满足1.28≤R2/R4≤2.059。通过合理地配置曲率半径和镜片形状，能够提升相对照度，有利于修正像差，特别是降低像差，从而提高光学成像系统的解像力。
在示例性实施方式中，第一透镜在光轴上的中心厚度CT1与第三透镜在光轴上的中心厚度CT3之间可满足：2.5＜CT1/CT3＜3.1，更具体地，可满足2.538≤CT1/CT3≤3.06。通过合理配置第一片透镜的中心厚度与第二透镜的中心厚度，能够有效地控制光学成像系统的色球差。
在示例性实施方式中，第一透镜在光轴上的中心厚度CT1与第四透镜在光轴上的中心厚度CT4之间可满足：0.4＜CT4/CT1＜0.8，更具体地，可满足0.498≤CT4/CT1≤0.634。使第一透镜与第四透镜的形状相互配合，能够有效提升周边的相对照度。
在示例性实施方式中，第一透镜的有效焦距f1和第四透镜的有效焦距f4与光学成像系统的有效焦距f之间可满足：-0.8＜(f1+f4)/f＜0，更具体地，可满足-0.772≤(f1+f4)/f≤-0.356。通过合理分配第一透镜与第四透镜的光焦度，能有效地控制系统的球差和慧差，从而提高光学成像系统的解像力和成像品质。
在示例性实施方式中，第三透镜的有效焦距f3与第四透镜的有效焦距f4之间可满足：1＜f3/f4＜3，更具体地，满足1.259≤f3/f4≤2.710。 合理分配第三透镜与第四透镜的光焦度，确保光学成像系统在应用范围内放大倍率，以保证有效的识别精度；并且可降低像差，提升光学成像系统的解像力。
在示例性实施方式中，第三透镜像侧面和光轴的交点至第三透镜像侧面的有效半径顶点之间的轴上距离SAG32与第三透镜在光轴上的中心厚度CT3之间可满足：-0.7＜SAG32/CT3＜-0.3，更具体地，可满足-0.601≤SAG32/CT3≤-0.413。这样配置的第三透镜对轴外视场具有较大的折光能力，从而有利于缩短镜头的整体长度。同时，这样的配置还可降低像差，提升系统的解像力。
在示例性实施方式中，第三透镜的有效焦距f3和第四透镜的有效焦距f4与光学成像系统的有效焦距f之间可满足：-4.5＜(f3+f4)/f＜-3，更具体地，可满足-4.254≤(f3+f4)/f≤-3.386。合理分配第三透镜、第四透镜的光焦度与成像系统的有效焦距f，确保光学成像系统在应用范围内放大倍率，保证有效的识别精度。
在示例性实施方式中，第四透镜像侧面的有效半径DT42与电子光感元件有效像素区域对角线长的一半ImgH之间可满足：0.5＜DT42/ImgH＜0.9，更具体地，可满足0.742≤DT42/ImgH≤0.784。通过合理配置光学成像系统的成像面上有效像素区域对角线长的一半ImgH和第四透镜像侧面的有效半径DT42，能够有效地控制主光线入射角度，并提升周边的相对照度。
根据本申请的上述实施方式的光学成像系统可采用多片镜片，例如在本申请中采用4片，但应理解这只是示例而非限制。通过合理设置各透镜的光焦度、中心厚度、面型、各透镜之间的轴上间距等，可提供一种高亮度、高解像力的紧凑型光学成像系统。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，在不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种结果和优点。例如，虽然在第一实施方式中的描述中采用由四个透镜为例进行了描述，但是该光学成像系统不限于包括四个透镜。如果需要，该光学成像系统还可包括其它数量的透镜。
下面参照附图进一步描述可适用于上述实施方式的光学成像系统的具体实施例。
实施例1
以下参照图1至图2E描述本申请上述实施方式的光学成像系统的实施例1。图1示出了根据本申请实施例1的光学成像系统的结构示意图。
如图1所示，光学成像系统的实施例1沿着光轴包括从物侧至成像侧依序排列的四个透镜L1-L4。第一透镜L1具有物侧面S1和像侧面S2；第二透镜L2具有物侧面S3和像侧面S4；第三透镜L3具有物侧面S5和像侧面S6；以及第四透镜L4具有物侧面S7和像侧面S8。在该实施例中，第一透镜可具有正光焦度，且其物侧面为凸面，像侧面可为凹面；第二透镜可具有正光焦度或负光焦度，且其物侧面为凸面，像侧面可为凹面；以及第三透镜和第四透镜均可具有负光焦度。该光学成像系统还又包括具有物侧面S9和像侧面S10的滤光片L5，该滤光片为IR红外滤光片，带通波长范围为750nm-900nm。在本实施例的光学成像系统中，还设置有光圈STO以调解进光量。来自物体的光依序穿过各表面S1至S10并最终成像在成像面S11上。
下表1中示出了实施例1中的各透镜的有效焦距f1至f4、光学成像系统的有效焦距f、电子光感元件的有效像素区域的对角线长的一半ImgH、光学成像系统的最大视场角的一半HFOV、光学成像系统的光圈数Fno以及摄像透镜的总长度TTL。
表1
参数 ImgH(mm) HFOV(°) Fno f(mm) f1(mm)
数值 1.965 23.929 2.19 4.235 3.585
参数 f2(mm) f3(mm) f4(mm) TTL(mm)  
数值 28.471 -8.567 -5.5774 3.980  
参照表1，第一透镜物侧面至成像面在光轴上的距离TTL与光学成像系统的有效焦距f之间满足TTL/f＝0.940。第一透镜的有效焦距f1和第四透镜的有效焦距f4与光学成像系统的有效焦距f之间满足-0.8＜(f1+f4)/f＝-0.517。第三透镜的有效焦距f3与第四透镜的有效焦距f4之间满足f3/f4＝1.484。第三透镜的有效焦距f3和第四透镜的有效焦距f4与光学成像系统的有效焦距f之间满足(f3+f4)/f＝-3.386。
表2示出了该实施例1中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。
表2
Figure PCTCN2017096589-appb-000001
参照表2，第一透镜在光轴上的中心厚度CT1与第三透镜在光轴上的中心厚度CT3之间满足CT1/CT3＝2.559。第一透镜在光轴上的中心厚度CT1与第四透镜在光轴上的中心厚度CT4之间满足CT4/CT1＝0.59。第一透镜像侧面的曲率半径R2与第二透镜物侧面的曲率半径R3之间满足R2/R3＝1.497。第一透镜物侧面至成像面在光轴上的距离TTL与第四透镜在光轴上的中心厚度CT4之间满足CT4/TTL＝0.087。第一透镜像侧面的曲率半径R2与第二透镜像侧面的 曲率半径R4之间满足R2/R4＝1.392。
本实施例采用了4片透镜作为示例，通过合理分配个镜片的焦距与面型，有效扩大镜头的孔径，缩短镜头总长度，保证镜头的大孔径与小型化；同时校正各类像差，提高了镜头的解析度与成像品质。各非球面面型x由以下公式限定：
Figure PCTCN2017096589-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2中曲率半径R的倒数)；k为圆锥系数(在上表1中已给出)；Ai是非球面第i-th阶的修正系数。下表3示出了可用于该实施例1中的各透镜的各球面或非球面S1-S8的高次项系数A4、A6、A8、A10、A12、A14和A16。
表3
面号 A4 A6 A8 A10 A12 A14 A16
S1 4.2598E-03 8.0390E-03 5.6871E-03 -5.7764E-02 1.3728E-01 -1.3709E-01 5.3122E-02
S2 -3.7293E-03 8.0358E-02 -3.8353E-01 1.0679E+00 -1.5990E+00 1.2262E+00 -3.5924E-01
S3 1.5146E-02 -4.5397E-02 3.4813E-01 -3.0285E-01 -1.2592E-01 6.3794E-01 -8.9105E-02
S4 -2.9946E-02 4.6317E-02 -2.9061E-01 6.0316E-01 1.0664E-01 -1.5035E+00 1.1364E+00
S5 -4.7103E-01 -4.2993E-01 8.6790E-01 -3.8100E+00 5.7919E+00 -5.6836E+00 1.9258E+00
S6 -3.0570E-01 1.1354E-01 -3.1033E-01 7.4215E-01 -6.5304E-01 4.8934E-01 -1.6184E-01
S7 -3.2670E-01 3.3255E-01 -2.6684E-01 6.0235E-02 5.4947E-02 -3.3164E-02 5.1649E-03
S8 -3.1214E-01 3.2685E-01 -3.1111E-01 1.8680E-01 -7.0249E-02 1.4816E-02 -1.3134E-03
参照表1至表3，第一透镜物侧面的有效半径DT11与第二透镜物侧面的有效半径DT21之间满足DT11/DT21＝1.346。第三透镜像侧面和光轴的交点至第三透镜像侧面的有效半径顶点之间的轴上距离SAG32与第三透镜在光轴上的中心厚度CT3之间满足SAG32/CT3＝-0.413。第四透镜像侧面的有效半径DT42与电子光感元件有效像素区域对角线长的一半ImgH之间满足DT42/ImgH＝0.747。 光学成像系统的成像高度对应的光线入射电子感光组件的最大角度CRAmax满足CRAmax＝31.397。
图2A示出了实施例1的光学成像系统的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图2B示出了实施例1的光学成像系统的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图2C示出了实施例1的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图2D示出了实施例1的光学成像系统的倍率色差曲线，其表示光线经由光学成像系统后在成像面上的不同的像高的偏差。图2E示出了实施例1的光学成像系统的相对照度曲线，其表示在镜头的光轴上，也就是画面中心的影像的明亮程度。综上所述并参照图2A至图2E可以看出，根据实施例1的光学成像系统在保证紧凑的情况下可获得高亮度、高解像力的高质量的成像效果。
实施例2
以下参照图3至图4E描述本申请的上述光学成像系统的实施例2。除了光学成像系统的各镜片的参数之外，例如除了各镜片的曲率半径、厚度、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光学成像系统与实施例1中描述的光学成像系统的布置结构相同。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的光学成像系统的结构示意图。如图3所示，根据实施例2的光学成像系统包括分别具有物侧面和像侧面的第一至第四透镜L1-L4。
下表4中示出了实施例2中的各透镜的有效焦距f1至f4、光学成像系统的有效焦距f、电子光感元件的有效像素区域的对角线长的一半ImgH、光学成像系统的最大视场角的一半HFOV、光学成像系统的光圈数Fno以及光学成像系统的总长度TTL。
表4
参数 ImgH(mm) HFOV(°) Fno f(mm) f1(mm)
数值 1.965 23.985 2.19 4.229 3.641
参数 f2(mm) f3(mm) f4(mm) TTL(mm)  
数值 26.933 -8.321 -6.608 3.980  
表5示出了该实施例2中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。
表5
Figure PCTCN2017096589-appb-000003
表6示出了可用于该实施例2中的各透镜的各球面或非球面S1-S8的高次项系数A4、A6、A8、A10、A12、A14和A16。
表6
面号 A4 A6 A8 A10 A12 A14 A16
S1 6.5522E-03 -1.5398E-02 1.2197E-01 -3.4843E-01 5.3559E-01 -4.2031E-01 1.3626E-01
S2 -6.0400E-03 6.7426E-02 -2.7188E-01 6.7107E-01 -8.6524E-01 5.4634E-01 -1.0163E-01
S3 5.6533E-03 -3.7809E-02 3.3792E-01 -2.9566E-01 -1.0947E-01 6.3365E-01 -4.5668E-02
S4 -3.7367E-02 6.6576E-02 -2.9776E-01 4.7819E-01 3.4924E-01 -1.5035E+00 1.1364E+00
S5 -4.7684E-01 -3.9853E-01 8.2541E-01 -3.6820E+00 5.4735E+00 -5.6836E+00 1.9258E+00
S6 -3.2187E-01 1.4697E-01 -3.2673E-01 6.9018E-01 -6.7204E-01 5.2623E-01 -1.5823E-01
S7 -4.1196E-01 4.8668E-01 -5.0309E-01 3.3139E-01 -1.3026E-01 2.9911E-02 -3.0396E-03
S8 -2.7445E-01 2.5169E-01 -2.1836E-01 1.1398E-01 -3.4204E-02 4.7202E-03 -1.3689E-04
图4A示出了实施例2的光学成像系统的轴上色差曲线，其表示 不同波长的光线经由光学系统后的会聚焦点偏离。图4B示出了实施例2的光学成像系统的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图4C示出了实施例2的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图4D示出了实施例2的光学成像系统的倍率色差曲线，其表示光线经由光学成像系统后在成像面上的不同的像高的偏差。图4E示出了实施例2的光学成像系统的相对照度曲线，其表示在镜头的光轴上，也就是画面中心的影像的明亮程度。综上所述并参照图4A至图4E可以看出，根据实施例2的光学成像系统在保证紧凑的情况下可获得高亮度、高解像力的高质量的成像效果。
实施例3
以下参照图5至图6E描述本申请的上述光学成像系统的实施例3。图5示出了根据本申请实施例3的光学成像系统的结构示意图。如图5所示，根据实施例3的光学成像系统包括分别具有物侧面和像侧面的第一至第四透镜L1-L4。
下表7中示出了实施例3中的各透镜的有效焦距f1至f4、光学成像系统的总有效焦距f、电子光感元件的有效像素区域的对角线长的一半ImgH、光学成像系统的最大视场角的一半HFOV、光学成像系统的光圈数Fno以及摄像透镜的总长度TTL。
表7
参数 ImgH(mm) HFOV(°) Fno f(mm) f1(mm)
数值 1.965 23.906 2.20 4.240 3.639
参数 f2(mm) f3(mm) f4(mm) TTL(mm)  
数值 25.370 -8.780 -6.046 3.980  
表8示出了该实施例3中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。
表8
Figure PCTCN2017096589-appb-000004
表9示出了可用于该实施例3中的各透镜的各球面或非球面S1-S8的高次项系数A4、A6、A8、A10、A12、A14和A16。
表9
面号 A4 A6 A8 A10 A12 A14 A16
S1 5.2529E-03 -1.4774E-02 1.2793E-01 -3.7110E-01 5.7652E-01 -4.5218E-01 1.4646E-01
S2 -2.5755E-03 3.4644E-02 -6.3715E-02 6.4658E-02 1.1338E-01 -2.6458E-01 1.6906E-01
S3 5.1071E-03 -2.7331E-02 3.3775E-01 -2.9187E-01 -1.1049E-01 6.1445E-01 -3.1843E-02
S4 -3.8736E-02 6.5302E-02 -2.7468E-01 4.7363E-01 3.4553E-01 -1.5035E+00 1.1364E+00
S5 -5.0813E-01 -4.0837E-01 7.0937E-01 -3.6356E+00 5.7777E+00 -5.6836E+00 1.9258E+00
S6 -3.2412E-01 1.0694E-01 -2.9913E-01 7.3142E-01 -6.4339E-01 5.2849E-01 -2.1021E-01
S7 -3.3189E-01 3.7837E-01 -3.6551E-01 1.7376E-01 -8.8667E-03 -1.5833E-02 3.3429E-03
S8 -2.5663E-01 2.1153E-01 -1.4462E-01 2.9478E-02 2.0314E-02 -1.3612E-02 2.3794E-03
图6A示出了实施例3的光学成像系统的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图6B示出了实施例3的光学成像系统的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图6C示出了实施例3的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图6D示出了实施例3的光学成像系统的倍率色差曲线，其表示光线经由光学成像系统后在成像面上的不同的像高的偏差。图6E示出了实施例3的光学成像系统的相对照度曲线，其表示在镜头的光轴上，也就是画面中心的影像的明亮程度。综上所 述并参照图6A至图6E可以看出，根据实施例3的光学成像系统在保证紧凑的情况下可获得高亮度、高解像力的高质量的成像效果。
实施例4
以下参照图7至图8E描述本申请的上述光学成像系统的实施例4。图7示出了根据本申请实施例4的光学成像系统的结构示意图。如图7所示，根据实施例4的光学成像系统包括分别具有物侧面和像侧面的第一至第四透镜L1-L4。
下表10中示出了实施例4中的各透镜的有效焦距f1至f4、光学成像系统的总有效焦距f、电子光感元件的有效像素区域的对角线长的一半ImgH、光学成像系统的最大视场角的一半HFOV、光学成像系统的光圈数Fno以及摄像透镜的总长度TTL。
表10
参数 ImgH(mm) HFOV(°) Fno f(mm) f1(mm)
数值 1.965 24.022 2.19 4.232 3.344
参数 f2(mm) f3(mm) f4(mm) TTL(mm)  
数值 194.998 -13.152 -4.853 3.980  
表11示出了该实施例4中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。
表11
Figure PCTCN2017096589-appb-000005
Figure PCTCN2017096589-appb-000006
表12示出了可用于该实施例4中的各透镜的各球面或非球面S1-S8的高次项系数A4、A6、A8、A10、A12、A14和A16。
表12
面号 A4 A6 A8 A10 A12 A14 A16
S1 -1.2762E-02 -2.1151E-02 1.6782E-02 -2.4137E-02 7.1846E-03 -1.5325E-03 0.0000E+00
S2 3.1977E-02 -5.7865E-02 8.3184E-02 -1.0469E-01 7.3509E-02 -1.9755E-02 0.0000E+00
S3 -6.7136E-02 -3.4551E-01 2.1253E+00 -6.2494E+00 9.7710E+00 -6.2966E+00 0.0000E+00
S4 -1.4229E-01 -2.8744E-01 1.2418E+00 -4.0581E+00 6.8061E+00 -5.3201E+00 0.0000E+00
S5 -3.1293E-01 -7.9039E-01 2.0954E+00 -7.3127E+00 1.1542E+01 -9.3772E+00 0.0000E+00
S6 -1.2963E-01 -2.3996E-01 4.8940E-01 -6.2835E-01 6.7012E-01 -2.6628E-01 0.0000E+00
S7 -8.7783E-02 1.0282E-01 -3.9235E-02 7.8333E-03 -8.4456E-04 4.5935E-05 -9.8600E-07
S8 -1.2169E-01 6.2009E-02 -2.3881E-02 4.2808E-03 -3.9067E-04 1.8220E-05 -3.5013E-07
图8A示出了实施例4的光学成像系统的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图8B示出了实施例4的光学成像系统的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图8C示出了实施例4的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图8D示出了实施例4的光学成像系统的倍率色差曲线，其表示光线经由光学成像系统后在成像面上的不同的像高的偏差。图8E示出了实施例4的光学成像系统的相对照度曲线，其表示在镜头的光轴上，也就是画面中心的影像的明亮程度。综上所述并参照图8A至图8E可以看出，根据实施例4的光学成像系统在保证紧凑的情况下可获得高亮度、高解像力的高质量的成像效果。
实施例5
以下参照图9至图10E描述本申请的上述光学成像系统的实施例5。图9示出了根据本申请实施例5的光学成像系统的结构示意图。如图9所示，根据实施例5的光学成像系统包括分别具有物侧面和像侧面的第 一至第四透镜L1-L4。
下表13中示出了实施例5中的各透镜的有效焦距f1至f4、光学成像系统的总有效焦距f、电子光感元件的有效像素区域的对角线长的一半ImgH、光学成像系统的最大视场角的一半HFOV、光学成像系统的光圈数Fno以及摄像透镜的总长度TTL。
表13
参数 ImgH(mm) HFOV(°) Fno f(mm) f1(mm)
数值 1.815 22.529 2.24 4.256 3.193
参数 f2(mm) f3(mm) f4(mm) TTL(mm)  
数值 -30.418 -9.793 -6.477 3.973  
表14示出了该实施例5中的各透镜的表面类型、曲率半径、厚度、材料和圆锥系数。
表14
Figure PCTCN2017096589-appb-000007
表15示出了可用于该实施例5中的各透镜的各球面或非球面S1-S8的高次项系数A4、A6、A8、A10、A12、A14和A16。
表15
面号 A4 A6 A8 A10 A12 A14 A16
S1 1.8752E-02 -5.1040E-02 1.2377E-01 -1.3354E-01 5.6256E-02 1.1079E-02 -1.1860E-02
S2 -1.4825E-03 4.4649E-04 1.1817E-02 -3.3963E-02 3.7787E-02 -2.8131E-02 6.7750E-03
S3 6.5526E-02 -2.9416E-01 1.7133E+00 -2.6488E+00 -2.1044E+00 1.1070E+01 -8.9033E+00
S4 -2.8042E-02 4.9982E-01 -2.0348E+00 5.1222E+00 2.1632E+00 -2.7349E+01 3.2299E+01
S5 -2.7561E-01 -1.0730E+00 7.1781E+00 -3.0890E+01 7.7208E+01 -1.0338E+02 5.4734E+01
S6 -2.6455E-01 4.3708E-01 -1.8219E+00 5.3347E+00 -8.3698E+00 6.6714E+00 -2.1750E+00
S7 -4.0948E-01 7.3790E-01 -1.1939E+00 1.2722E+00 -7.6319E-01 2.3757E-01 -3.0083E-02
S8 -2.2991E-01 2.1209E-01 -1.9481E-01 8.9887E-02 -9.9298E-03 -5.2622E-03 1.2885E-03
图10A示出了实施例5的光学成像系统的轴上色差曲线，其表示不同波长的光线经由光学系统后的会聚焦点偏离。图10B示出了实施例5的光学成像系统的象散曲线，其表示子午像面弯曲和弧矢像面弯曲。图10C示出了实施例5的光学成像系统的畸变曲线，其表示不同视角情况下的畸变大小值。图10D示出了实施例5的光学成像系统的倍率色差曲线，其表示光线经由光学成像系统后在成像面上的不同的像高的偏差。图10E示出了实施例5的光学成像系统的相对照度曲线，其表示在镜头的光轴上，也就是画面中心的影像的明亮程度。综上所述并参照图10A至图10E可以看出，根据实施例5的光学成像系统在保证紧凑的情况下可获得高亮度、高解像力的高质量的成像效果。
综上所述，参照表1至表15，实施例1至实施例5的各参数之间分别可满足下表16所示的关系。
表16
实施例/条件式 1 2 3 4 5
f3/f4 1.484 1.259 1.452 2.710 1.512
CT4/TTL 0.087 0.077 0.093 0.081 0.093
(f1+f4)/f -0.517 -0.702 -0.568 -0.356 -0.772
R2/R3 1.497 1.393 1.505 1.870 1.724
CRAmax(°) 31.397 31.884 31.640 31.710 33.575
(f3+f4)/f -3.386 -3.530 -3.497 -4.254 -3.823
CT1/CT3 2.559 2.538 2.538 2.702 3.060
R2/R4 1.392 1.280 1.389 1.895 2.059
CT4/CT1 0.590 0.527 0.634 0.518 0.498
DT11/DT21 1.346 1.271 1.269 1.470 1.714
DT42/ImgH 0.747 0.744 0.742 0.782 0.784
SAG32/CT3 -0.413 -0.492 -0.458 -0.601 -0.481
TTL/f 0.940 0.941 0.939 0.940 0.934
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 (28)

  1. 一种光学成像系统，所述光学成像系统沿着光轴从物侧至成像侧依次设置有第一透镜、第二透镜、第三透镜和第四透镜，
    其特征在于，
    所述第一透镜具有正光焦度，其物侧面为凸面，像侧面为凹面；
    所述第二透镜的物侧面为凸面，像侧面为凹面；
    所述第三透镜和所述第四透镜具有负光焦度；
    其中，所述第一透镜的有效焦距f1和所述第四透镜的所述有效焦距f4与所述光学成像系统的有效焦距f之间满足：-0.8＜(f1+f4)/f＜0。
  2. 如权利要求1所述的光学成像系统，其特征在于，所述第一透镜物侧面至成像面在光轴上的距离TTL与所述第四透镜在光轴上的中心厚度CT4之间可满足：CT4/TTL＜0.1。
  3. 如权利要求1所述的光学成像系统，其特征在于，所述第一透镜像侧面的曲率半径R2与所述第二透镜物侧面的曲率半径R3之间满足：1.3＜R2/R3＜1.9。
  4. 如权利要求3所述的光学成像系统，其特征在于，所述第一透镜像侧面的所述曲率半径R2与所述第二透镜像侧面的曲率半径R4之间满足：1＜R2/R4＜2.1。
  5. 如权利要求1所述的光学成像系统，其特征在于，所述第三透镜的有效焦距f3与所述第四透镜的有效焦距f4之间满足：1＜f3/f4＜3。
  6. 如权利要求1-4中任一项所述的光学成像系统，其特征在于，所述第一透镜物侧面的有效半径DT11与所述第二透镜物侧面的有效半径DT21之间满足：1.2＜DT11/DT21＜1.8。
  7. 如权利要求1-4中任一项所述的光学成像系统，其特征在于，所述第四透镜像侧面的有效半径DT42与电子光感元件有效像素区域对角线长的一半ImgH之间满足：0.5＜DT42/ImgH＜0.9。
  8. 如权利要求1-4中任一项所述的光学成像系统，其特征在于，所述第三透镜像侧面和光轴的交点至所第三透镜像侧面的有效半径顶点之间的轴上距离SAG32与所述第三透镜在光轴上的所述中心厚度CT3之间满足：-0.7＜SAG32/CT3＜-0.3。
  9. 如权利要求1所述的光学成像系统，其特征在于，所述第三透镜的所述有效焦距f3和所述第四透镜的所述有效焦距f4与所述光学成像系统的所述有效焦距f之间满足：-4.5＜(f3+f4)/f＜-3。
  10. 如权利要求1-4中任一项所述的光学成像系统，其特征在于，所述第一透镜在光轴上的中心厚度CT1与所述第三透镜在光轴上的中心厚度CT3之间满足：2.5＜CT1/CT3＜3.1。
  11. 如权利要求1所述的光学成像系统，其特征在于，所述第四透镜与成像面之间设置有滤光片，所述滤光片为IR红外滤光片。
  12. 如权利要求11所述的光学成像系统，所述IR红外滤光片的带通波长范围为750nm-900nm。
  13. 如权利要求1-4中任一项所述的光学成像系统，其特征在于，所述第一透镜物侧面至成像面在光轴上的所述距离TTL与所述光学成像系统的所述有效焦距f之间满足：TTL/f＜1。
  14. 如权利要求1-4中任一项所述的光学成像系统，其特征在于，所述第一透镜在光轴上的所述中心厚度CT1与所述第四透镜在光轴上 的所述中心厚度CT4之间满足：0.4＜CT4/CT1＜0.8。
  15. 一种光学成像系统，所述光学成像系统沿着光轴从物侧至成像侧依次设置有第一透镜、第二透镜、第三透镜和第四透镜，
    其特征在于，
    所述第一透镜具有正光焦度，其物侧面为凸面，像侧面为凹面；
    所述第二透镜的物侧面为凸面，像侧面为凹面；
    所述第三透镜和所述第四透镜具有负光焦度；
    其中，所述第一透镜在光轴上的所述中心厚度CT1与所述第四透镜在光轴上的所述中心厚度CT4之间满足：0.4＜CT4/CT1＜0.8。
  16. 如权利要求15所述的光学成像系统，其特征在于，所述第一透镜物侧面至成像面在光轴上的距离TTL与所述第四透镜在光轴上的中心厚度CT4之间可满足：CT4/TTL＜0.1。
  17. 如权利要求16所述的光学成像系统，其特征在于，所述第三透镜的有效焦距f3与所述第四透镜的有效焦距f4之间满足：1＜f3/f4＜3。
  18. 如权利要求15-17中任一项所述的光学成像系统，其特征在于，所述第一透镜像侧面的曲率半径R2与所述第二透镜物侧面的曲率半径R3之间满足：1.3＜R2/R3＜1.9。
  19. 如权利要求18所述的光学成像系统，其特征在于，所述第一透镜像侧面的所述曲率半径R2与所述第二透镜像侧面的曲率半径R4之间满足：1＜R2/R4＜2.1。
  20. 如权利要求18所述的光学成像系统，其特征在于，所述第一透镜物侧面的有效半径DT11与所述第二透镜物侧面的有效半径DT21之间满足：1.2＜DT11/DT21＜1.8。
  21. 如权利要求18所述的光学成像系统，其特征在于，所述第一透镜的有效焦距f1和所述第四透镜的所述有效焦距f4与所述光学成像系统的有效焦距f之间满足：-0.8＜(f1+f4)/f＜0。
  22. 如权利要求15-17中任一项所述的光学成像系统，其特征在于，所述第四透镜像侧面的有效半径DT42与电子光感元件有效像素区域对角线长的一半ImgH之间满足：0.5＜DT42/ImgH＜0.9。
  23. 如权利要求15-17中任一项所述的光学成像系统，其特征在于，所述第三透镜像侧面和光轴的交点至所第三透镜像侧面的有效半径顶点之间的轴上距离SAG32与所述第三透镜在光轴上的所述中心厚度CT3之间满足：-0.7＜SAG32/CT3＜-0.3。
  24. 如权利要求15-17中任一项所述的光学成像系统，其特征在于，所述第三透镜的所述有效焦距f3和所述第四透镜的所述有效焦距f4与所述光学成像系统的所述有效焦距f之间满足：-4.5＜(f3+f4)/f＜-3。
  25. 如权利要求15-17中任一项所述的光学成像系统，其特征在于，所述第一透镜在光轴上的中心厚度CT1与所述第三透镜在光轴上的中心厚度CT3之间满足：2.5＜CT1/CT3＜3.1。
  26. 如权利要求15-17中任一项所述的光学成像系统，其特征在于，所述第四透镜与成像面之间设置有滤光片，所述滤光片为IR红外滤光片。
  27. 如权利要求26所述的光学成像系统，所述IR红外滤光片的带通波长范围为750nm-900nm。
  28. 如权利要求15-17中任一项所述的光学成像系统，其特征在 于，所述第一透镜物侧面至成像面在光轴上的所述距离TTL与所述光学成像系统的所述有效焦距f之间满足：TTL/f＜1。
PCT/CN2017/096589 2017-04-12 2017-08-09 摄像镜头光学成像系统 WO2018188236A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/772,860 US10921557B2 (en) 2017-04-12 2017-08-09 Optical imaging system of camera lens assembly

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201710236524.4 2017-04-12
CN201720379889.8 2017-04-12
CN201720379889.8U CN206990886U (zh) 2017-04-12 2017-04-12 摄像镜头光学成像系统
CN201710236524.4A CN106802477B (zh) 2017-04-12 2017-04-12 摄像镜头光学成像系统

Publications (1)

Publication Number Publication Date
WO2018188236A1 true WO2018188236A1 (zh) 2018-10-18

Family

ID=63792272

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/096589 WO2018188236A1 (zh) 2017-04-12 2017-08-09 摄像镜头光学成像系统

Country Status (2)

Country Link
US (1) US10921557B2 (zh)
WO (1) WO2018188236A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11112583B2 (en) * 2017-03-27 2021-09-07 Zhejiang Sunny Optical Co., Ltd Camera lens assembly and camera device comprising the camera lens assembly
KR102388071B1 (ko) * 2019-08-01 2022-04-19 주식회사 제이투씨 렌즈 광학계
CN113341539B (zh) * 2021-05-20 2022-08-30 江西晶超光学有限公司 光学系统、镜头模组和电子设备
TWI778904B (zh) * 2022-01-03 2022-09-21 新鉅科技股份有限公司 成像透鏡組及攝像模組

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6744570B1 (en) * 2003-01-30 2004-06-01 Minolta Co., Ltd. Taking lens system
US20090128927A1 (en) * 2007-11-16 2009-05-21 Chen Chun Shan Optical Lens System for Taking Image
JP2009288377A (ja) * 2008-05-28 2009-12-10 Hitachi Maxell Ltd レンズユニット及びカメラモジュール
CN202256843U (zh) * 2011-05-16 2012-05-30 大立光电股份有限公司 光学影像镜头
CN106154493A (zh) * 2016-03-18 2016-11-23 玉晶光电(厦门)有限公司 光学镜片组
CN106802477A (zh) * 2017-04-12 2017-06-06 浙江舜宇光学有限公司 摄像镜头光学成像系统

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS572013A (en) * 1980-06-06 1982-01-07 Canon Inc Small-sized lens for photograph
JP2000171701A (ja) * 1998-09-30 2000-06-23 Fuji Photo Optical Co Ltd 変形ガウス型レンズ
KR101425792B1 (ko) * 2012-12-31 2014-08-06 주식회사 코렌 촬영 렌즈 광학계
JP5917431B2 (ja) * 2013-03-29 2016-05-11 富士フイルム株式会社 撮像レンズおよび撮像レンズを備えた撮像装置
TWI480575B (zh) 2014-02-11 2015-04-11 Largan Precision Co Ltd 光學攝影鏡頭、取像裝置及電子裝置
TWI487941B (zh) 2014-02-24 2015-06-11 Largan Precision Co Ltd 光學成像鏡組、取像裝置以及可攜裝置
TWI512326B (zh) 2014-07-14 2015-12-11 Largan Precision Co Ltd 攝像用光學鏡頭、取像裝置及可攜裝置
CN105259636B (zh) 2015-10-19 2017-07-07 浙江舜宇光学有限公司 长焦镜头
CN205049806U (zh) 2015-10-19 2016-02-24 浙江舜宇光学有限公司 长焦镜头
CN106324804B (zh) * 2016-06-02 2018-12-18 玉晶光电(厦门)有限公司 光学成像镜头
CN106526790B (zh) 2016-08-26 2019-02-22 玉晶光电(厦门)有限公司 光学成像镜头
CN106526791B (zh) 2016-08-26 2019-05-03 玉晶光电(厦门)有限公司 光学成像镜头
CN106526789B (zh) 2016-08-26 2019-03-22 玉晶光电(厦门)有限公司 光学成像镜头

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6744570B1 (en) * 2003-01-30 2004-06-01 Minolta Co., Ltd. Taking lens system
US20090128927A1 (en) * 2007-11-16 2009-05-21 Chen Chun Shan Optical Lens System for Taking Image
JP2009288377A (ja) * 2008-05-28 2009-12-10 Hitachi Maxell Ltd レンズユニット及びカメラモジュール
CN202256843U (zh) * 2011-05-16 2012-05-30 大立光电股份有限公司 光学影像镜头
CN106154493A (zh) * 2016-03-18 2016-11-23 玉晶光电(厦门)有限公司 光学镜片组
CN106802477A (zh) * 2017-04-12 2017-06-06 浙江舜宇光学有限公司 摄像镜头光学成像系统

Also Published As

Publication number Publication date
US10921557B2 (en) 2021-02-16
US20200257081A1 (en) 2020-08-13

Similar Documents

Publication Publication Date Title
WO2020019794A1 (zh) 光学成像镜头
WO2019210672A1 (zh) 光学成像系统
WO2019100868A1 (zh) 光学成像镜头
WO2019169853A1 (zh) 光学成像镜头
CN109358414B (zh) 光学成像系统
WO2019210740A1 (zh) 光学成像镜头
WO2020119171A1 (zh) 光学成像镜头
WO2018192126A1 (zh) 摄像镜头
WO2018103250A1 (zh) 摄像镜头及摄像装置
WO2020186759A1 (zh) 光学成像镜头
WO2018214349A1 (zh) 摄像镜头
WO2020073703A1 (zh) 光学透镜组
WO2020107936A1 (zh) 光学成像系统
WO2019169856A1 (zh) 摄像镜头组
WO2019056817A1 (zh) 光学成像系统
WO2019137055A1 (zh) 摄像透镜系统
WO2019052220A1 (zh) 光学成像镜头
WO2018209855A1 (zh) 光学成像系统
CN106802477B (zh) 摄像镜头光学成像系统
WO2019033756A1 (zh) 光学成像镜头
WO2019080610A1 (zh) 摄像镜头
WO2019019626A1 (zh) 成像镜头
WO2018188236A1 (zh) 摄像镜头光学成像系统
WO2020134027A1 (zh) 光学成像镜头
WO2018218889A1 (zh) 光学成像系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17905257

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17905257

Country of ref document: EP

Kind code of ref document: A1