CN208172363U - A kind of microcephaly's large aperture camera - Google Patents
A kind of microcephaly's large aperture camera Download PDFInfo
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- CN208172363U CN208172363U CN201820716608.8U CN201820716608U CN208172363U CN 208172363 U CN208172363 U CN 208172363U CN 201820716608 U CN201820716608 U CN 201820716608U CN 208172363 U CN208172363 U CN 208172363U
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- lens
- microcephaly
- large aperture
- aperture camera
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Abstract
The utility model relates to a kind of microcephaly's large aperture camera, microcephaly's large aperture camera from an object side, successively by：With positive refracting power, and image side is the first lens of concave surface, has negative refractive power, and object side is the second lens of concave surface, has positive refracting power, and image side is the third lens on convex surface and has negative refractive power, and object side is the 4th lens composition on convex surface.Using 4 aspherical glass lens, optics overall length may be implemented less than 2.9mm, f-number is the bright camera lens of F/1.9, has good performance for imaging also under darker environment, maximum as circle is φ 3.9mm.And the first lens, structure of the second lens clear aperture less than φ 1.5mm are applicable to shield smart phone comprehensively.
Description
Technical field
The utility model relates to shield the smart phone of high pixel or thin video photographic device technical field comprehensively, especially
A kind of microcephaly's large aperture camera.
Background technique
With the development of image sensor chip technology, single pixel size is done smaller and smaller, and this requires take therewith
The pick-up lens parsing power matched is also higher and higher.Smart phone with camera function, recently as the market demand also new hair
Exhibition trend, in addition to high pixel, large aperture, except extra-thin requirement, comprehensive screen of smart phone also lifts on the market recently
Play upsurge.This requires pick-up lens other than meeting described above require, and the size of object side is small as far as possible, with
Meet the requirement of screen structure design aspect comprehensively.
Utility model content
The purpose of this utility model is to provide for a kind of microcephaly's large aperture camera.
The technical solution of the utility model is：A kind of microcephaly's large aperture camera, microcephaly's large aperture camera is from object
Side rise, successively by：With positive refracting power, and image side is the first lens of concave surface, has a negative refractive power, and object side is the of concave surface
Two lens, have positive refracting power, and image side be convex surface the third lens and have negative refractive power, and object side be convex surface the 4th thoroughly
Microscope group is at and meeting conditional below：
1<(R5+R6)/(R5-R6)<2
0<F3/F<0.6
Wherein, 1.5<(R5+R6)/(R5-R6)<2.5,0.5<F3/F<1, wherein R5, R6 are respectively the third lens
Object side and image side curvature radius, F3, F are respectively the third lens focal length and system focal length.
A kind of above-mentioned microcephaly's large aperture camera, microcephaly's large aperture camera also meet following relationship：
0.6<Y1/ImgH<0.8
Wherein, Y1 is the effective clear aperture in object side of the 4th lens, and ImgH is total image height.
A kind of above-mentioned microcephaly's large aperture camera, microcephaly's large aperture camera also meet following relationship：
-10<F2/F<-1
Wherein, F2, F are respectively the focal length and system focal length of second lens.
The utility model has the beneficial effects that：The utility model uses 4 aspherical glass lens, and it is total that optics may be implemented
Long to be less than 2.9mm, f-number is the bright camera lens of F/1.9, has good performance for imaging also under darker environment, maximum picture
Circle is φ 3.9mm.And the first lens, structure of the second lens clear aperture less than φ 1.5mm are applicable to shield intelligence comprehensively
Mobile phone.
Detailed description of the invention
Fig. 1 is the optical axis direction sectional view of the utility model microcephaly's large aperture camera；
Fig. 2 is the X-Y scheme of microcephaly's large aperture camera in the utility model embodiment 1；
The optical distortion indicatrix of microcephaly's large aperture camera in Fig. 3 the utility model embodiment 1；
The astigmatism field curve of microcephaly's large aperture camera in Fig. 4 the utility model embodiment 1；
The longitudinal spherical aberration curve of microcephaly's large aperture camera in Fig. 5 the utility model embodiment 1；
Fig. 6 is the X-Y scheme of microcephaly's large aperture camera in the utility model embodiment 2；
The optical distortion indicatrix of microcephaly's large aperture camera in Fig. 7 utility model embodiment 2；
The astigmatism field curve of imaging lens system group in Fig. 8 the utility model embodiment 2；
The longitudinal spherical aberration curve of microcephaly's large aperture camera in Fig. 9 the utility model embodiment 2.
In figure：P1. the first lens, the second lens of P2., P3. the third lens, the 4th lens of P4..
Specific embodiment
In order to more clearly state the utility model, the utility model is further described with reference to the accompanying drawing.
A kind of microcephaly's large aperture camera, microcephaly's large aperture camera from an object side, successively by：With positive refraction
Power, and image side is the first lens P1 of concave surface, has negative refractive power, and object side is the second lens P2 of concave surface, has positive refraction
Power, and image side be convex surface the third lens P3 and have negative refractive power, and object side be convex surface the 4th lens P4 form, for
The distribution of the positive negative power of upper 4 eyeglasses, makes each aberration obtain good correction, the system lateral color correction to less than
2.5um, and meet conditional below：
1<(R5+R6)/(R5-R6)<2
0<F3/F<0.6
Wherein, 1.5<(R5+R6)/(R5-R6)<2.5,0.5<F3/F<1, wherein R5, R6 are respectively the third lens
The object side of P3 and image side curvature radius, F3, F are respectively the third lens P3 focal length and system focal length.Appropriate setting the
The condition of three lens curvature radius can ensure that above there is no problem and shortens lens overall length for lens processing.
A kind of above-mentioned microcephaly's large aperture camera, microcephaly's large aperture camera also meet following relationship：
0.6<Y1/ImgH<0.8
Wherein, Y1 is the effective clear aperture in object side of the 4th lens P4, and ImgH is total image height.This conditional is advantageous
In promoting the edge relative illumination of system, and realize the more small-bore need to meet comprehensive screen mobile phone structure design in object side
It asks.
A kind of above-mentioned microcephaly's large aperture camera, microcephaly's large aperture camera also meet following relationship：
-10<F2/F<-1
Wherein, F2, F are respectively the focal length and system focal length of the second lens P2.This condition is for constraining the second lens
The focal length of P2 accounts for the ratio of system focal length, will be unfavorable for system compensation aberration more than the upper limit or lower limit, it is difficult to improve the solution of system
Analyse power.
4 eyeglasses of microcephaly's large aperture camera all use even aspheric surface glass lens, and asphericity coefficient meets such as
Lower equation：
Z=cy2/[1+{1-(1+k)c2y2}+1/2]+A4y4+A6y6+A8y8
+A10y10+A12y12+A14y14+A16y16+A18y18+A20y20
Wherein,
Z：Aspherical rise,
C：Aspherical paraxial curvature,
y：Camera lens aperture,
k：Circular cone coefficient,
A4：4 asphericity coefficients,
A6：6 asphericity coefficients,
A8：8 asphericity coefficients,
A10：10 asphericity coefficients,
A12：12 asphericity coefficients,
A14：14 asphericity coefficients,
A16：16 asphericity coefficients,
A18：18 asphericity coefficients,
A20：20 asphericity coefficients.
The utility model uses 4 aspherical glass lens, and optics overall length may be implemented less than 2.9mm, f-number F/
1.9 bright camera lens has good performance for imaging also under darker environment, maximum as circle is φ 3.9mm.And first thoroughly
Mirror P1, structure of the second lens P2 clear aperture less than φ 1.5mm are applicable to shield smart phone comprehensively.
Embodiment 1
Field angle is 83.5 °, aperture F1.98, and optics overall length TTL (distance of eyeglass front end to image planes) TTL is
The optical system that 2.904mm, image height and TTL ratio are 0.625.The design parameter of microcephaly's large aperture camera please refers to table 1 (a)
With table 1 (b).
Table 1 (a)
| Surface number | Surface type | Radius of curvature | Thickness | Material property (Nd:Vd) |
| Object plane | Spherical surface | Infinitely | Infinitely | |
| stop | Spherical surface | Infinitely | -0.0879 | |
| 3 | It is aspherical | 1.2082 | 0.4157 | |
| 4 | It is aspherical | 7.7340 | 0.2122 | 1.544:56.1 |
| 5 | It is aspherical | -12.2778 | 0.2400 | |
| 6 | It is aspherical | 7.4198 | 0.1032 | 1.661:20.4 |
| 7 | It is aspherical | -1.5038 | 0.5508 | |
| 8 | It is aspherical | -0.5180 | 0.0500 | 1.544:56.1 |
| 9 | It is aspherical | 1.1637 | 0.2806 | |
| 10 | It is aspherical | 0.4449 | 0.3365 | 1.535:56.1 |
| 11 | Spherical surface | Infinitely | 0.2100 | |
| 12 | Spherical surface | Infinitely | 0.5052 | 1.517:64.2 |
| Image planes | Spherical surface | Infinitely | 0.0000 |
Table 1 (b)
| 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| k | -2.6129E+00 | -2.3579E+01 | 9.8059E+01 | 8.9998E+01 | 2.1191E-01 | -6.7621E+00 | -4.3357E-01 | -4.1370E+00 |
| A4 | 1.1801E-01 | -4.7745E-01 | -9.2863E-01 | -2.0058E-01 | 7.8070E-01 | -2.6624E+00 | -1.1785E+00 | -4.9544E-01 |
| A6 | -4.2743E-01 | 5.4228E+00 | 1.5109E+00 | 1.7020E+00 | 6.3285E-01 | 1.8456E+01 | 1.6591E+00 | 6.8592E-01 |
| A8 | 3.2378E+01 | -1.5119E+02 | -4.4917E+01 | -4.3212E+01 | -2.8392E+01 | -9.6929E+01 | -1.5341E+00 | -5.1367E-01 |
| A10 | -9.0164E+02 | 2.1843E+03 | 4.4095E+02 | 4.2811E+02 | 2.8823E+02 | 3.6040E+02 | 6.6919E-01 | -1.3664E-01 |
| A12 | 1.2002E+04 | -1.9362E+04 | -2.8963E+03 | -2.5074E+03 | -1.5805E+03 | -8.9253E+02 | -1.5568E-01 | 7.0202E-01 |
| A14 | -8.9051E+04 | 1.0567E+05 | 1.2713E+04 | 8.7966E+03 | 4.9026E+03 | 1.4504E+03 | 4.0323E-01 | -7.0674E-01 |
| A16 | 3.7501E+05 | -3.4513E+05 | -3.4102E+04 | -1.8161E+04 | -8.6918E+03 | -1.4849E+03 | -5.2697E-01 | 3.6156E-01 |
| A18 | -8.3816E+05 | 6.1707E+05 | 5.1864E+04 | 2.0511E+04 | 8.2817E+03 | 8.6583E+02 | 2.5592E-01 | -9.6150E-02 |
| A20 | 7.7194E+05 | -4.6287E+05 | -3.4789E+04 | -9.7965E+03 | -3.3062E+03 | -2.1846E+02 | -4.3430E-02 | 1.0509E-02 |
The value that the value that the value of (R5+R6)/(R5-R6) is 2.05, F3/F in embodiment is 0.61, Y1/ImgH is 0.71,
F2/F<Value be -3.48.
As shown in Figure 1, being the X-Y scheme of microcephaly's large aperture camera in the present embodiment.The mirror of microcephaly's large aperture camera
Plate shape is more well-balanced, convenient for molding production.And eyeglass spacing is reasonable, designs convenient for the structure in later period.
It is the optical distortion indicatrix of microcephaly's large aperture camera in the present embodiment if Fig. 3 shows, indicates different perspectives
In the case of distortion sizes values.
It is the astigmatism field curve of microcephaly's large aperture camera in the present embodiment if Fig. 4 shows, indicates meridianal image surface and arc
Swear curvature of the image.
It is the longitudinal spherical aberration curve of microcephaly's large aperture camera in the present embodiment if Fig. 5 shows.
Embodiment 2
Field angle is 83.5 °, aperture F1.98, and optics overall length TTL (distance of eyeglass front end to image planes) TTL is
The optical system that 2.89mm, image height and TTL ratio are 0.627.
The design parameter of microcephaly's large aperture camera please refers to table 2 (a) and table 2 (b)：
Table 2 (a)
| Surface number | Surface type | Radius of curvature | Thickness | Material property (Nd:Vd) |
| Object plane | Spherical surface | Infinitely | Infinitely | |
| stop | Spherical surface | Infinitely | -0.0879 | |
| 3 | It is aspherical | 1.1950 | 0.4144 | 1.546:56.1 |
| 4 | It is aspherical | 7.2748 | 0.2019 | |
| 5 | It is aspherical | -12.2833 | 0.2400 | 1.661:21.4 |
| 6 | It is aspherical | 7.2044 | 0.1106 | |
| 7 | It is aspherical | -1.4800 | 0.5422 | 1.546:56.1 |
| 8 | It is aspherical | -0.5181 | 0.0500 | |
| 9 | It is aspherical | 1.1512 | 0.2800 | 1.535:56.1 |
| 10 | It is aspherical | 0.4467 | 0.3365 | |
| 11 | Spherical surface | Infinitely | 0.2100 | 1.517:64.2 |
| 12 | Spherical surface | Infinitely | 0.5080 | |
| Image planes | Spherical surface | Infinitely | 0.0000 |
Table 2 (b)
| Surface number | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| k | -2.6129E+00 | -2.3579E+01 | 9.8059E+01 | 8.9998E+01 | 2.1191E-01 | -6.7621E+00 | -4.3357E-01 | -4.1370E+00 |
| A4 | 1.1801E-01 | -4.7745E-01 | -9.2863E-01 | -2.0058E-01 | 7.8070E-01 | -2.6624E+00 | -1.1785E+00 | -4.9544E-01 |
| A6 | -4.2743E-01 | 5.4228E+00 | 1.5109E+00 | 1.7020E+00 | 6.3285E-01 | 1.8456E+01 | 1.6591E+00 | 6.8592E-01 |
| A8 | 3.2378E+01 | -1.5119E+02 | -4.4917E+01 | -4.3212E+01 | -2.8392E+01 | -9.6929E+01 | -1.5341E+00 | -5.1367E-01 |
| A10 | -9.0164E+02 | 2.1843E+03 | 4.4095E+02 | 4.2811E+02 | 2.8823E+02 | 3.6040E+02 | 6.6919E-01 | -1.3664E-01 |
| A12 | 1.2002E+04 | -1.9362E+04 | -2.8963E+03 | -2.5074E+03 | -1.5805E+03 | -8.9253E+02 | -1.5568E-01 | 7.0202E-01 |
| A14 | -8.9051E+04 | 1.0567E+05 | 1.2713E+04 | 8.7966E+03 | 4.9026E+03 | 1.4504E+03 | 4.0323E-01 | -7.0674E-01 |
| A16 | 3.7501E+05 | -3.4513E+05 | -3.4102E+04 | -1.8161E+04 | -8.6918E+03 | -1.4849E+03 | -5.2697E-01 | 3.6156E-01 |
| A18 | -8.3816E+05 | 6.1707E+05 | 5.1864E+04 | 2.0511E+04 | 8.2817E+03 | 8.6583E+02 | 2.5592E-01 | -9.6150E-02 |
| A20 | 7.7194E+05 | -4.6287E+05 | -3.4789E+04 | -9.7965E+03 | -3.3062E+03 | -2.1846E+02 | -4.3430E-02 | 1.0509E-02 |
The value that (R5+R6) of microcephaly's large aperture camera/(R5-R6) value is 2.10, F3/F in the present embodiment is 0.61,
The value of Y1/ImgH is 0.71, F2/F<Value be -3.49.
As shown in fig. 6, being the X-Y scheme of microcephaly's large aperture camera in the present embodiment.
It is the optical distortion indicatrix of microcephaly's large aperture camera in the present embodiment if Fig. 7 shows.
It is the astigmatism field curve of microcephaly's large aperture camera in the present embodiment if Fig. 8 shows.
It is the longitudinal spherical aberration curve of microcephaly's large aperture camera in the present embodiment if Fig. 9 shows.
The embodiment created above to the utility model is described in detail, but the content is only the utility model wound
The preferred embodiment made, should not be considered as limiting the scope of the present invention.It is all to create range according to the utility model
Made all the changes and improvements etc., shall still fall within the scope of this patent.
Claims (3)
1. a kind of microcephaly's large aperture camera, which is characterized in that microcephaly's large aperture camera from an object side, successively by：Tool
There is positive refracting power, and image side is the first lens (P1) of concave surface, has negative refractive power, and object side is the second lens of concave surface
(P2), there is positive refracting power, and image side is the third lens (P3) on convex surface and has negative refractive power, and object side is the 4 of convex surface
Lens (P4) composition, and meet conditional below：
1<(R5+R6)/(R5-R6)<2
0<F3/F<0.6
Wherein, 1.5<(R5+R6)/(R5-R6)<2.5,0.5<F3/F<1, wherein R5, R6 are respectively the third lens (P3)
Object side and image side curvature radius, F3, F are respectively the third lens (P3) focal length and system focal length.
2. one of according to claim 1 microcephaly's large aperture camera, which is characterized in that microcephaly's large aperture camera is also
Meet following relationship：
0.6<Y1/ImgH<0.8
Wherein, Y1 is the effective clear aperture in object side of the 4th lens (P4), and ImgH is total image height.
3. one of according to claim 1 microcephaly's large aperture camera, which is characterized in that microcephaly's large aperture camera is also
Meet following relationship：
-10<F2/F<-1
Wherein, F2, F are respectively the focal length and system focal length of second lens (P2).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020140499A1 (en) * | 2018-12-31 | 2020-07-09 | 瑞声通讯科技(常州)有限公司 | Camera optical lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020140499A1 (en) * | 2018-12-31 | 2020-07-09 | 瑞声通讯科技(常州)有限公司 | Camera optical lens |
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| GR01 | Patent grant | ||
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Effective date of registration: 20200422 Address after: 124000 2F, No.4 electronic workshop, high tech Industrial Development Zone, no.388, Zhonghua North Road, Xinglongtai District, Panjin City, Liaoning Province Patentee after: Liaoning Zhonglan Photoelectric Technology Co., Ltd Address before: 124000 Xinglongtai District, Panjin, Liaoning Province, China Road East Patentee before: LIAONING ZHONGLAN ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A small head large aperture camera Effective date of registration: 20210726 Granted publication date: 20181130 Pledgee: China Construction Bank Corporation Panjin branch Pledgor: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Registration number: Y2021210000049 |
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