CN203630432U - Mini wide-angle imaging lens - Google Patents
Mini wide-angle imaging lens Download PDFInfo
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- CN203630432U CN203630432U CN201320723990.2U CN201320723990U CN203630432U CN 203630432 U CN203630432 U CN 203630432U CN 201320723990 U CN201320723990 U CN 201320723990U CN 203630432 U CN203630432 U CN 203630432U
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Abstract
The utility model provides a mini wide-angle imaging lens which successively comprises a firs lens body, a second lens body and a third lens body from the object side to the image side. The first lens body includes a lens of a negative power; the second lens body includes a meniscus lens of a positive power, and the object side of the meniscus lens includes a convex surface; and the third lens includes a lens of the positive power. The lens satisfies -2.6<f12/f3<-1.6, wherein f1.2 is the combined focal length of the first and second lens bodies, and f3 is the focal length of the third lens body. The mini wide-angle imaging lens employs the three plastic aspherical lens bodies, overcomes the defects in the prior art via different focal power distribution, and provides a novel scheme for present specification and performance requirements.
Description
Technical field
The utility model relates to a kind of imaging optical system being made up of three groups of lens, especially relates to a kind of miniature wide-angle imaging lens that can be applicable near infrared imaging.
Background technology
In recent years, along with the development of the chip technology such as CCD or CMOS, the Pixel Dimensions of chip was more and more less, drove pick-up lens gradually toward miniaturization, lightweight and the development of high pixel field.And, in pursuing the high picture element of miniaturization, also further require to provide the performance such as wide-angle and large aperture.For above-mentioned requirements, the patent No. is " US7751128 ", within open day, is the utility model patent of " 2010.07.06 ", proposed a kind of wide-angle camera of 3 chip architectures.Three groups of lens in this camera lens from the object side to the image side successively by thering is negative dioptric first lens, the 3rd lens that have the second lens of positive diopter and have a positive diopter form.Although this system has been taken into account the characteristic of wide-angle, limit to some extent for the pursuit of miniaturization, and its wide-angleization is also insufficient.And this system has been used glass as the material of first lens, improve the manufacturing cost of camera lens, the space being therefore improved.
In addition, along with the range of application of pick-up lens is more and more extensive, particularly in industries such as mobile phone camera, on-vehicle lens, safe imaging monitoring and electronic entertainment, use the demand of the phtographic lens of infrared ray wave band also to improve, the lens that conventional being only designed for receives visible ray cannot satisfy the demands thereupon.Thus, the utility model proposes a kind of wide-angle imaging lens with larger field angle, can effectively shorten the total length of system, reduce the susceptibility of system, to obtain good image quality, can be applicable to infrared optical system field simultaneously.
Utility model content
The utility model provides a kind of miniature wide-angle imaging lens, solved there is high pixel, image quality is good but shortcoming that camera lens is not portable, applicable to portable type electronic product, its technical scheme is as described below:
A kind of miniature wide-angle imaging lens, comprises first lens, the second lens, the 3rd lens, the eyeglass that described first lens is negative power successively from object space to image space; The second lens are the falcate eyeglass that the object side of positive light coke is convex surface; The eyeglass that the 3rd lens are positive light coke; Described camera lens meets
-2.6<f12/f3<-1.6
Wherein, f12 is the combined focal length of first lens and the second lens; F3 is the focal length of the 3rd lens.
Further, described camera lens meets
0.75<Y’/(f*TTL)<5.0
Wherein, Y ' is the maximum image height on imaging surface; F is the focal length of whole lens combination; TTL is the overall length of lens.
Wherein, to have a face at least be aspheric surface to this lens system.
Further, between the second lens and the 3rd lens, be provided with diaphragm.
The utility model has adopted 3 plastic aspherical element eyeglasses, distributes by different focal powers, has overcome the defect of prior art, and current specification requirement and performance requirement have been proposed to a kind of new solution.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the miniature wide-angle imaging lens embodiment 1 that provides of the utility model;
Fig. 2 is chromaticity difference diagram (mm) on the axle of embodiment 1;
Fig. 3 is the astigmatism figure (mm) of embodiment 1;
Fig. 4 is the distortion figure (%) of embodiment 1;
Fig. 5 is that (μ m) for the ratio chromatism, figure of embodiment 1;
Fig. 6 is the schematic diagram of the miniature wide-angle imaging lens embodiment 2 that provides of the utility model;
Fig. 7 is chromaticity difference diagram (mm) on the axle of embodiment 2;
Fig. 8 is the astigmatism figure (mm) of embodiment 2;
Fig. 9 is the distortion figure (%) of embodiment 2;
Figure 10 is that (μ m) for the ratio chromatism, figure of embodiment 2;
Figure 11 is the schematic diagram of the miniature wide-angle imaging lens embodiment 3 that provides of the utility model;
Figure 12 is chromaticity difference diagram (mm) on the axle of embodiment 3;
Figure 13 is the astigmatism figure (mm) of embodiment 3;
Figure 14 is the distortion figure (%) of embodiment 3;
Figure 15 is that (μ m) for the ratio chromatism, figure of embodiment 3.
Embodiment
In embodiment 1, as Fig. 1 the utility model is made up of three groups of lens, comprise successively first lens E1, the second lens E2, diaphragm, the 3rd lens E3, color filter E4, optical glass, the eyeglass that described first lens E1 is negative power from object space to image space; The falcate eyeglass that the object side that the second lens E2 is positive light coke is convex surface; The eyeglass that the 3rd lens E3 is positive light coke; It is aspheric surface that this system has a face at least; From the object side to the image side, described first lens E1 two sides is S1, S2, and the second lens E2 two sides is S3, S4, and diaphragm face is S5, and the 3rd lens E3 two sides is S6, S7, and color filter E4 two sides is S8, S9, and the face of optical lens is S10.
The parameter of camera lens meets:
TTL=7.004；f1=-1.798；f2=10.810；f3=1.585；f=0.781；
f12/f3=-1.686；
Y’/(f*TTL)=0.877；
Systematic parameter: 1/4 " sensor devices f-number 2.0
Table 1
| Surface type | Radius-of-curvature | Thickness | Material | Effective diameter | Circular cone coefficient |
| Sphere | Infinite | Infinite | ? | ? | ? |
| Aspheric surface | 9.7060 | 0.5921 | 1.535/55.78 | 8.7371 | 3.0890 |
| Aspheric surface | 0.8459 | 1.9918 | ? | 3.8110 | -1.1382 |
| Aspheric surface | 3.5491 | 0.5163 | 1.535/55.78 | 2.5620 | -119.2531 |
| Aspheric surface | 8.9237 | 0.1854 | ? | 1.5392 | -80.6538 |
| Sphere | Infinite | 0.1794 | ? | 0.8748 | ? |
| Aspheric surface | 5.0750 | 1.3925 | 1.535/55.78 | 2.6017 | -155.9082 |
| Aspheric surface | -0.9061 | 0.1000 | ? | 3.0083 | -1.0020 |
| Sphere | Infinite | 0.7000 | 1.517/64.17 | 3.7065 | ? |
| Sphere | Infinite | 1.3469 | ? | 4.0309 | ? |
| Sphere | Infinite | ? | ? | 5.0072 | ? |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12, A14, the A16 of non-spherical lens:
Table 2
| A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| 2.5562E-04 | 1.7819E-05 | -7.0637E-08 | -1.5991E-08 | 2.2154E-10 | -9.2277E-12 | 2.0617E-12 |
| -2.9628E-03 | 1.3353E-03 | 1.4503E-04 | 2.4303E-05 | 8.8328E-06 | 6.6284E-07 | -7.6055E-07 |
| -1.6192E-02 | 2.3634E-02 | 5.0702E-03 | -2.3389E-03 | -2.6233E-03 | 4.6618E-04 | 2.1308E-04 |
| -5.2842E-03 | 2.9720E-01 | -9.7431E-02 | -1.1110E-01 | -2.2248E-01 | 2.4343E-01 | 1.1038E-01 |
| 6.7334E-02 | -2.1195E-02 | -2.4822E-03 | 4.2523E-03 | 6.5941E-04 | 1.6267E-05 | -6.1539E-04 |
| 2.2635E-02 | 1.6945E-02 | 3.0618E-03 | 2.4526E-03 | 8.0688E-04 | 7.0922E-05 | -4.1344E-04 |
In embodiment bis-, as shown in Figure 6, described camera lens comprises first lens E1, the second lens E2, diaphragm, the 3rd lens E3, color filter E4, optical glass, the eyeglass that described first lens E1 is negative power successively from object space to image space; The falcate eyeglass that the object side that the second lens E2 is positive light coke is convex surface; The eyeglass that the 3rd lens E3 is positive light coke; It is aspheric surface that this system has a face at least; From the object side to the image side, described first lens E1 two sides is S1, S2, and the second lens E2 two sides is S3, S4, and diaphragm face is S5, and the 3rd lens E3 two sides is S6, S7, and color filter E4 two sides is S8, S9, and the face of optical lens is S10, and the parameter of camera lens is as follows:
TTL=2.50；f1=-0.714；f2=1.333；f3=0.771；f=0.676；
f12/f3=-2.438；
Y’/(f*TTL)=1.449；
Systematic parameter: 1/7 " sensor devices f-number 2.1
Table 3
| Surface type | Radius-of-curvature | Thickness | Material | Effective diameter | Circular cone coefficient |
| Sphere | Infinite | 400.0000 | ? | 2489.7543 | ? |
| Aspheric surface | 6.5900 | 0.2000 | 1.535/55.78 | 2.0368 | 21.2093 |
| Aspheric surface | 0.3526 | 0.1555 | ? | 1.3271 | -1.5943 |
| Aspheric surface | 0.6074 | 0.2850 | 1.535/55.78 | 1.2308 | -8.6981 |
| Aspheric surface | 3.7318 | 0.0664 | ? | 0.6960 | -117.0495 |
| Sphere | Infinite | 0.0896 | ? | 0.4210 | ? |
| Aspheric surface | 7.3061 | 0.5780 | 1.535/55.78 | 1.0272 | 5.4632 |
| Aspheric surface | -0.4191 | 0.0500 | ? | 1.2148 | -2.3577 |
| Sphere | Infinite | 0.3000 | 1.517/64.17 | 1.6229 | ? |
| Sphere | Infinite | 0.7758 | ? | 1.8197 | ? |
| Sphere | Infinite | ? | ? | 2.5973 | ? |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12, A14, the A16 of non-spherical lens:
Table 4
| A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| 1.3898E-01 | -5.2540E-02 | 1.8941E-02 | -6.2563E-03 | -1.0621E-02 | -1.4494E-02 | 3.7631E-05 |
| -4.9411E-01 | -8.3334E-01 | -8.7508E-01 | 2.8374E-01 | 3.9272E+00 | 7.0896E+00 | -1.1196E+01 |
| -9.2959E-01 | 1.9889E+00 | 3.5533E+00 | 3.3022E+00 | -1.6052E+01 | -3.4971E+01 | 2.2227E+01 |
| 7.0054E-01 | 4.7909E-01 | 1.6849E+02 | -1.0475E+03 | 1.4855E+03 | 1.4069E+05 | -8.8941E+05 |
| 2.6288E-01 | 1.8347E+00 | -1.0646E+01 | 2.7701E+01 | 7.3977E+01 | -5.9215E+02 | 9.3361E+02 |
| -2.2051E+00 | 4.3358E+00 | 2.2159E-01 | 1.9109E+00 | 2.4826E+01 | 2.9384E+01 | -1.9285E+02 |
In embodiment tri-, as described in Figure 11, described camera lens comprises first lens E1, the second lens E2, diaphragm, the 3rd lens E3, color filter E4, optical glass, the eyeglass that described first lens E1 is negative power successively from object space to image space; The falcate eyeglass that the object side that the second lens E2 is positive light coke is convex surface; The eyeglass that the 3rd lens E3 is positive light coke; It is aspheric surface that this system has a face at least; From the object side to the image side, described first lens E1 two sides is S1, S2, and the second lens E2 two sides is S3, S4, and diaphragm face is S5, and the 3rd lens E3 two sides is S6, S7, and color filter E4 two sides is S8, S9, and the face of optical lens is S10, and the parameter of described camera lens is as follows:
TTL=4.856；f1=-1.225；f2=2.585；f3=1.340；f=1.026；
f12/f3=-2.181；
Y’/(f*TTL)=0.964；
Systematic parameter: 1/4 " sensor devices f-number 2.1
Table 5
| Surface type | Radius-of-curvature | Thickness | Material | Effective diameter | Circular cone coefficient |
| Sphere | Infinite | Infinite | ? | ? | ? |
| Aspheric surface | 12.4627 | 0.2990 | 1.535/55.78 | 3.8755 | 7.7823 |
| Aspheric surface | 0.6092 | 0.3839 | ? | 2.6545 | -1.6766 |
| Aspheric surface | 1.1605 | 0.6772 | 1.535/55.78 | 2.3407 | -7.3876 |
| Aspheric surface | 6.2151 | 0.0916 | ? | 1.1415 | 40.5849 |
| Sphere | Infinite | 0.1460 | ? | 0.7011 | 0.0000 |
| Aspheric surface | 6.9177 | 1.2974 | 1.535/55.78 | 1.9828 | 18.9419 |
| Aspheric surface | -0.7362 | 0.1000 | ? | 2.3899 | -2.4814 |
| Sphere | Infinite | 0.7000 | 1.517/64.17 | 3.1734 | ? |
| Sphere | Infinite | 1.1609 | ? | 3.6336 | ? |
| Sphere | Infinite | ? | ? | 4.7829 | ? |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12, A14, the A16 of non-spherical lens:
Table 6
| A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| 1.8578E-02 | -2.9866E-03 | 3.3076E-04 | -9.6673E-06 | -1.0207E-05 | -3.6869E-06 | 2.6047E-07 |
| -7.8851E-02 | -3.5388E-02 | -9.6417E-03 | 2.0662E-03 | 4.7566E-03 | 2.5677E-03 | -1.5920E-03 |
| -1.4032E-01 | 7.2103E-02 | 2.8731E-02 | 7.4159E-03 | -2.2693E-02 | -9.0772E-03 | 8.7628E-03 |
| 1.1012E-01 | 2.1934E-02 | 2.2467E+00 | -4.0683E+00 | 1.6803E+00 | 4.6350E+01 | -8.5345E+01 |
| 5.0587E-02 | 1.0486E-01 | -2.0006E-01 | 1.1619E-01 | 1.1198E-01 | -1.8380E-01 | 6.4093E-02 |
| -3.4661E-01 | 1.9850E-01 | 2.9547E-03 | 7.4212E-03 | 2.8082E-02 | 9.6809E-03 | -1.8505E-02 |
Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are chromaticity difference diagram on the axle of embodiment 1, astigmatism figure, distortion figure and ratio chromatism, figure, Fig. 7, Fig. 8, Fig. 9 and Figure 10 are chromaticity difference diagram on the axle of embodiment 2, astigmatism figure, distortion figure and ratio chromatism, figure, Figure 12, Figure 13, Figure 14 and Figure 15 are chromaticity difference diagram on the axle of embodiment 3, astigmatism figure, distortion figure and ratio chromatism, figure, by chromaticity difference diagram, astigmatism figure, distortion figure and ratio chromatism, figure on the axle of each embodiment, can find out and the utlity model has good optical property.
Although described principle of the present utility model and embodiment for miniature wide-angle imaging lens above; but under above-mentioned instruction of the present utility model; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion all drop in protection domain of the present utility model.It will be understood by those skilled in the art that specific descriptions are above in order to explain the purpose of this utility model, and not for limiting the utility model, protection domain of the present utility model is limited by claim and equivalent thereof.
Claims (4)
1. a miniature wide-angle imaging lens, is characterized in that: comprise successively first lens, the second lens, the 3rd lens, the eyeglass that described first lens is negative power from object space to image space; The second lens are the falcate eyeglass that the object side of positive light coke is convex surface; The eyeglass that the 3rd lens are positive light coke; Described camera lens meets
-2.6<f12/f3<-1.6
Wherein, f12 is the combined focal length of first lens and the second lens; F3 is the focal length of the 3rd lens.
2. miniature wide-angle imaging lens according to claim 1, is characterized in that: described camera lens meets
0.75<Y’/(f*TTL)<5.0
Wherein, Y ' is the maximum image height on imaging surface; F is the focal length of whole lens combination; TTL is the overall length of lens.
3. miniature wide-angle imaging lens according to claim 1, is characterized in that: it is aspheric surface that this lens system has a face at least.
4. miniature wide-angle imaging lens according to claim 1, is characterized in that: between the second lens and the 3rd lens, be provided with diaphragm.
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| CN201320723990.2U CN203630432U (en) | 2013-11-15 | 2013-11-15 | Mini wide-angle imaging lens |
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| CN201320723990.2U CN203630432U (en) | 2013-11-15 | 2013-11-15 | Mini wide-angle imaging lens |
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| CN203630432U true CN203630432U (en) | 2014-06-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777315A (en) * | 2013-11-15 | 2014-05-07 | 浙江舜宇光学有限公司 | Miniaturized wide angle imaging lens |
| WO2020037508A1 (en) * | 2018-08-21 | 2020-02-27 | 深圳市汇顶科技股份有限公司 | Lens system, fingerprint identification device and terminal device |
| USRE48828E1 (en) | 2015-01-09 | 2021-11-23 | Largan Precision Co., Ltd. | Compact optical system, image capturing unit and electronic device |
-
2013
- 2013-11-15 CN CN201320723990.2U patent/CN203630432U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777315A (en) * | 2013-11-15 | 2014-05-07 | 浙江舜宇光学有限公司 | Miniaturized wide angle imaging lens |
| CN103777315B (en) * | 2013-11-15 | 2016-05-11 | 浙江舜宇光学有限公司 | Miniature wide-angle imaging lens |
| USRE48828E1 (en) | 2015-01-09 | 2021-11-23 | Largan Precision Co., Ltd. | Compact optical system, image capturing unit and electronic device |
| USRE49703E1 (en) | 2015-01-09 | 2023-10-17 | Largan Precision Co., Ltd. | Compact optical system, image capturing unit and electronic device |
| WO2020037508A1 (en) * | 2018-08-21 | 2020-02-27 | 深圳市汇顶科技股份有限公司 | Lens system, fingerprint identification device and terminal device |
| US11774708B2 (en) | 2018-08-21 | 2023-10-03 | Shenzhen GOODIX Technology Co., Ltd. | Lens system, fingerprint identification apparatus and terminal device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20160511 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |