CN103576297B - Pick-up lens - Google Patents
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- CN103576297B CN103576297B CN201310528905.1A CN201310528905A CN103576297B CN 103576297 B CN103576297 B CN 103576297B CN 201310528905 A CN201310528905 A CN 201310528905A CN 103576297 B CN103576297 B CN 103576297B
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Abstract
The invention provides a kind of pick-up lens, comprise the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens successively from object space to image space, described first lens have positive light coke, and its thing side is convex surface; Described second lens have negative power, and its face, image side is concave surface; Described 4th lens have positive light coke, and its face, image side is convex surface; The face, image side of described 5th lens is concave surface, and has a point of inflexion at least in the surface of its thing side or image side; The thing side of described 6th lens is concave surface, and face, image side is convex surface.Present invention employs 6 plastic aspherical element eyeglasses, distributed by different focal powers, overcome the defect of prior art, there is high pixel, image quality is good and camera lens total length is shorter, portable advantage, proposes a kind of new solution to current specification requirement and performance requirement.
Description
Technical field
The present invention relates to a kind of imaging optical system of camera lens, relate to a kind of pick-up lens be made up of six groups of lens specifically.
Background technology
In recent years at present, with the development of the chip technologies such as CCD or CMOS, the Pixel Dimensions of chip is more and more less, require also more and more higher to the image quality of the optical system matched, the optical lens size being equipped on the electronic product such as mobile phone or digital camera but becomes more and more less, makes pick-up lens toward miniaturization and high pixel neighborhoods high speed development.At present, the general slim camera lens of high pixel, many employing five chip lens arrangements are main, if the patent No. is for shown in the United States Patent (USP) of " US8369027 ", but growing due to portable type electronic product, promote further the pixel of miniaturization phtographic lens and the requirement of image quality, known optical system cannot meet higher photography demand.Therefore, be badly in need of one and be applicable to portable type electronic product, there is the good and optical imaging lens systems that camera lens total length is shorter of high pixel, image quality.
Summary of the invention
The invention provides a kind of pick-up lens, solve and have the good but shortcoming that camera lens is not portable of high pixel, image quality, be applicable to portable type electronic product, its technical scheme is as described below:
A kind of pick-up lens, comprise the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens successively from object space to image space, described first lens have positive light coke, and its thing side is convex surface; Described second lens have negative power, and its face, image side is concave surface; Described 4th lens have positive light coke, and its face, image side is convex surface; The face, image side of described 5th lens is concave surface, and has a point of inflexion at least in the surface of its thing side or image side; The thing side of described 6th lens is concave surface, and face, image side is convex surface.
Described pick-up lens meets following relationship: 4.5<f4/CT4<7.5
Wherein, f4 is the focal length of the 4th lens; CT4 is the center thicknesses of the 4th lens on optical axis.
Described pick-up lens meets following relationship:
-3.0<f2/f4<-0.95
Wherein, f2 is the focal length of the second eyeglass; F4 is the focal length of the 4th eyeglass.
The thing side surface of described 4th lens there is a point of inflexion.
Described pick-up lens meets following relationship:
0.5<Yc41/SD41<0.95
Wherein, Yc41 is the vertical range of the point of inflexion on the thing side surface of the 4th eyeglass and optical axis; SD41 is the effective radius of the thing side surface of the 4th eyeglass.
Described pick-up lens has at least a face to be aspheric surface.
Light hurdle is provided with between object and the second eyeglass.
Described pick-up lens have employed glass lens.
Present invention employs 6 plastic aspherical element eyeglasses, distributed by different focal powers, overcome the defect of prior art, there is high pixel, image quality is good and camera lens total length is shorter, portable advantage, proposes a kind of new solution to current specification requirement and performance requirement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of pick-up lens embodiment 1 provided by the invention;
Fig. 2 be embodiment 1 axle on chromaticity difference diagram (mm);
Fig. 3 is the astigmatism figure (mm) of embodiment 1;
Fig. 4 is the distortion figure (%) of embodiment 1;
Fig. 5 is the ratio chromatism, figure (μm) of embodiment 1;
Fig. 6 is the schematic diagram of pick-up lens embodiment 2 provided by the invention;
Fig. 7 be embodiment 2 axle on chromaticity difference diagram (mm);
Fig. 8 is the astigmatism figure (mm) of embodiment 2;
Fig. 9 is the distortion figure (%) of embodiment 2;
Figure 10 is the ratio chromatism, figure (μm) of embodiment 2;
Figure 11 is the schematic diagram of pick-up lens embodiment 3 provided by the invention;
Figure 12 be embodiment 3 axle on chromaticity difference diagram (mm);
Figure 13 is the astigmatism figure (mm) of embodiment 3;
Figure 14 is the distortion figure (%) of embodiment 3;
Figure 15 is the ratio chromatism, figure (μm) of embodiment 3.
Embodiment
The pick-up lens that the embodiment of the present invention 1 provides, as shown in Figure 1, be followed successively by the first lens E1, Guang Lan, the second lens E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and optical lens from the object side to the image side, described first lens E1 has positive light coke, and its thing side is convex surface; Described second lens E2 has negative power, and its face, image side is concave surface; Described 4th lens E4 has positive light coke, and its face, image side is convex surface, thing side surface has a point of inflexion; The face, image side of described 5th lens E5 is concave surface, and has a point of inflexion at least in the surface of its thing side or image side; The thing side of described 6th lens E6 is concave surface, and face, image side is convex surface.Described pick-up lens has at least a face to be aspheric surface.
From the object side to the image side, described first lens E1 two sides is S1, S2, face, light hurdle is S3, second lens E2 two sides is S4, S5,3rd lens E3 two sides is S6, S7, and the 4th lens E4 two sides is S8, S9, and the 5th lens E5 two sides is S10, S11,6th lens E6 two sides is S12, S13, and optical lens face is S14.
The each parameter of pick-up lens in embodiment 1 is as described below: TTL=3.801; F1=2.278; F2=-4.565; F3=∞; F4=3.377; F5=-614.01; F6=-2.896; F=3.151;
Also meet: f4/CT4=5.496; F2/f4=-1.352; Yc41/SD41=0.66,
Wherein, f4 is the focal length of the 4th lens; CT4 is the center thicknesses of the 4th lens on optical axis; F2 is the focal length of the second eyeglass; Yc41 is the vertical range of the point of inflexion on the thing side surface of the 4th eyeglass and optical axis; SD41 is the effective radius of the thing side surface of the 4th eyeglass.
Systematic parameter: 1/4 " sensor devices f-number 2.4
Table 1
| Surface type | Radius-of-curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| Sphere | Infinite | Infinite | |||
| Aspheric surface | 1.3036 | 0.5725 | 1.544,56.11 | 1.8221 | -0.2490 |
| Aspheric surface | -23.3857 | 0.0300 | 1.5191 | -50.0000 | |
| Sphere | Infinite | 0.0319 | 1.0919 | ||
| Aspheric surface | -163.1660 | 0.2500 | 1.639/23.29 | 1.1103 | 0.0000 |
| Aspheric surface | 3.0031 | 0.1981 | 1.2295 | -47.1881 | |
| Aspheric surface | Infinite | 0.2677 | 1.639/23.29 | 1.2884 | 0.0000 |
| Aspheric surface | Infinite | 0.1316 | 1.6011 | 0.0000 | |
| Aspheric surface | -3.6225 | 0.6145 | 1.544/56.11 | 2.1512 | 0.0000 |
| Aspheric surface | -1.2960 | 0.1443 | 2.4000 | 0.0000 | |
| Aspheric surface | 3.7070 | 0.2983 | 1.544/56.11 | 2.4314 | -49.9996 |
| Aspheric surface | 3.5622 | 0.2123 | 2.8488 | 0.0000 | |
| Aspheric surface | -1.5564 | 0.2500 | 1.544/56.11 | 2.9408 | 0.0000 |
| Self-defined | -99.6016 | 0.7998 | 3.4971 | 0.0000 | |
| Sphere | Infinite | 5.1422 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens,
Table 2
The pick-up lens that the embodiment of the present invention 2 provides, as shown in Figure 6, be followed successively by the first lens E1, Guang Lan, the second lens E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and optical lens from the object side to the image side, described first lens E1 has positive light coke, and its thing side is convex surface; Described second lens E2 has negative power, and its face, image side is concave surface; Described 4th lens E4 has positive light coke, and its face, image side is convex surface, thing side surface has a point of inflexion; The face, image side of described 5th lens E5 is concave surface, and has a point of inflexion at least in the surface of its thing side or image side; The thing side of described 6th lens E6 is concave surface, and face, image side is convex surface.Described pick-up lens has at least a face to be aspheric surface.
From the object side to the image side, described first lens E1 two sides is S1, S2, face, light hurdle is S3, second lens E2 two sides is S4, S5,3rd lens E3 two sides is S6, S7, and the 4th lens E4 two sides is S8, S9, and the 5th lens E5 two sides is S10, S11,6th lens E6 two sides is S12, S13, and optical lens face is S14.
The each parameter of pick-up lens in embodiment 2 is as described below: TTL=3.81; F1=2.257; F2=-4.235; F3=136.48; F4=3.141; F5=-31.011; F6=-2.849; F=3.183;
Also meet: f4/CT4=4.515; F2/f4=-1.39; Yc41/SD41=0.53,
Wherein, f4 is the focal length of the 4th lens; CT4 is the center thicknesses of the 4th lens on optical axis; F2 is the focal length of the second eyeglass; Yc41 is the vertical range of the point of inflexion on the thing side surface of the 4th eyeglass and optical axis; SD41 is the effective radius of the thing side surface of the 4th eyeglass.
Systematic parameter: 1/4 " sensor devices f-number 1.9
Table 3
| Surface type | Radius-of-curvature | Thickness | Material | Effective aperture | Circular cone coefficient |
| Sphere | Infinite | Infinite | |||
| Aspheric surface | 1.2427 | 0.4510 | 1.54,56.11 | 1.3264 | 0.2027 |
| Aspheric surface | -146.6670 | 0.0428 | 1.3438 | -50.0000 | |
| Aspheric surface | -102.8932 | 0.2500 | 1.64,23.29 | 1.3483 | 0.0000 |
| Aspheric surface | 2.8113 | 0.2162 | 1.3960 | -36.1449 | |
| Aspheric surface | 10.3689 | 0.2816 | 1.64,23.29 | 1.4170 | 0.0000 |
| Aspheric surface | 11.6268 | 0.1271 | 1.6542 | 0.0000 | |
| Aspheric surface | -4.5431 | 0.6957 | 1.54,56.11 | 2.1432 | 0.0000 |
| Aspheric surface | -1.3133 | 0.1218 | 2.4000 | 0.0000 | |
| Aspheric surface | 3.8822 | 0.3396 | 1.54,56.11 | 2.3272 | -49.9997 |
| Aspheric surface | 3.0610 | 0.2345 | 2.7554 | 0.0000 | |
| Aspheric surface | -1.5316 | 0.2500 | 1.54,56.11 | 2.8794 | 0.0000 |
| Aspheric surface | -99.6016 | 0.7998 | 3.6010 | 0.0000 | |
| Sphere | Infinite | 4.8319 |
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens,
Table 4
The pick-up lens that the embodiment of the present invention 3 provides, as shown in figure 11, be followed successively by the first lens E1, Guang Lan, the second lens E2, the 3rd lens E3, the 4th lens E4, the 5th lens E5, the 6th lens E6 and optical lens from the object side to the image side, described first lens E1 has positive light coke, and its thing side is convex surface; Described second lens E2 has negative power, and its face, image side is concave surface; Described 4th lens E4 has positive light coke, and its face, image side is convex surface, thing side surface has a point of inflexion; The face, image side of described 5th lens E5 is concave surface, and has a point of inflexion at least in the surface of its thing side or image side; The thing side of described 6th lens E6 is concave surface, and face, image side is convex surface.Described pick-up lens has at least a face to be aspheric surface.
From the object side to the image side, described first lens E1 two sides is S1, S2, face, light hurdle is S3, second lens E2 two sides is S4, S5,3rd lens E3 two sides is S6, S7, and the 4th lens E4 two sides is S8, S9, and the 5th lens E5 two sides is S10, S11,6th lens E6 two sides is S12, S13, and optical lens face is S14.
The each parameter of pick-up lens in embodiment 3 is as described below: TTL=3.801; F1=2.471; F2=-3.321; F3=6.401; F4=3.418; F5=-85.018; F6=-2.796; F=3.117;
Also meet: f4/CT4=4.986; F2/f4=-0.972; Yc41/SD41=0.672,
Wherein, f4 is the focal length of the 4th lens; CT4 is the center thicknesses of the 4th lens on optical axis; F2 is the focal length of the second eyeglass; Yc41 is the vertical range of the point of inflexion on the thing side surface of the 4th eyeglass and optical axis; SD41 is the effective radius of the thing side surface of the 4th eyeglass.
Systematic parameter: 1/4 " sensor devices f-number 1.9
Table 5
Following table is aspheric surface high-order term coefficient A4, A6, A8, A10, A12 of non-spherical lens,
Table 6
Fig. 2, Fig. 3, Fig. 4 and Fig. 5 be embodiment 1 axle on chromaticity difference diagram, astigmatism figure, distortion figure and ratio chromatism, figure, Fig. 7, Fig. 8, Fig. 9 and Figure 10 be embodiment 2 axle on chromaticity difference diagram, astigmatism figure, distortion figure and ratio chromatism, figure, Figure 12, Figure 13, Figure 14 and Figure 15 be embodiment 3 axle on chromaticity difference diagram, 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 that the present invention has good optical property.
Although describe principle of the present invention and embodiment for micro pick-up lens above; but under above-mentioned instruction of the present invention; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improve or distortion all drops in protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions are above to explain object of the present invention, and not for limiting the present invention, protection scope of the present invention is by claim and equivalents thereof.
Claims (7)
1. a pick-up lens, is characterized in that: comprise the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens successively from object space to image space, described first lens have positive light coke, and its thing side is convex surface; Described second lens have negative power, and its face, image side is concave surface; Described 4th lens have positive light coke, and its face, image side is convex surface; The face, image side of described 5th lens is concave surface, and has a point of inflexion at least in the surface of its thing side or image side; The thing side of described 6th lens is concave surface, and face, image side is convex surface; Described pick-up lens meets following relationship:
4.5<f4/CT4<7.5
Wherein, f4 is the focal length of the 4th lens; CT4 is the center thicknesses of the 4th lens on optical axis.
2. pick-up lens according to claim 1, is characterized in that: described pick-up lens meets following relationship
-3.0<f2/f4<-0.95
Wherein, f2 is the focal length of the second eyeglass; F4 is the focal length of the 4th eyeglass.
3. pick-up lens according to claim 1, is characterized in that: the thing side surface of described 4th lens has a point of inflexion.
4. pick-up lens according to claim 3, is characterized in that: described pick-up lens meets following relationship
0.5<Yc41/SD41<0.95
Wherein, Yc41 is the vertical range of the point of inflexion on the thing side surface of the 4th eyeglass and optical axis; SD41 is the effective radius of the thing side surface of the 4th eyeglass.
5. pick-up lens according to claim 1, is characterized in that: described pick-up lens has at least a face to be aspheric surface.
6. pick-up lens according to claim 1, is characterized in that: between object and the second eyeglass, be provided with diaphragm.
7. pick-up lens according to claim 1, is characterized in that: described pick-up lens have employed glass lens.
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6226376B2 (en) | 2013-12-25 | 2017-11-08 | カンタツ株式会社 | Imaging lens |
| CN103955047B (en) * | 2014-03-23 | 2016-08-17 | 浙江舜宇光学有限公司 | Pick-up lens and module thereof and terminal |
| CN106062611B (en) * | 2014-03-23 | 2018-10-23 | 浙江舜宇光学有限公司 | Pick-up lens and its module and terminal |
| CN105445898B (en) * | 2014-08-06 | 2017-12-05 | 玉晶光电(厦门)有限公司 | The electronic installation of this camera lens of optical imaging lens and application |
| CN105676412B (en) * | 2014-11-18 | 2018-01-19 | 先进光电科技股份有限公司 | Five chip optical imaging lens groups |
| TWI531815B (en) | 2014-12-30 | 2016-05-01 | 大立光電股份有限公司 | Photographing optical lens assembly, image capturing device and electronic device |
| CN105807409B (en) * | 2014-12-30 | 2018-09-14 | 大立光电股份有限公司 | Camera optical eyeglass group, image-taking device and electronic device |
| TWI529417B (en) | 2015-04-15 | 2016-04-11 | 大立光電股份有限公司 | Photographing lens assembly, image capturing unit and electronic device |
| JP6501635B2 (en) | 2015-06-08 | 2019-04-17 | カンタツ株式会社 | Imaging lens |
| KR101813336B1 (en) * | 2015-11-26 | 2017-12-28 | 삼성전기주식회사 | Optical Imaging System |
| TWI638184B (en) * | 2016-02-05 | 2018-10-11 | 先進光電科技股份有限公司 | Optical image capturing system |
| KR102620545B1 (en) | 2016-04-06 | 2024-01-03 | 삼성전기주식회사 | Optical Imaging System |
| JP6570076B2 (en) | 2016-08-29 | 2019-09-04 | カンタツ株式会社 | Imaging lens |
| JP6482509B2 (en) | 2016-08-29 | 2019-03-13 | カンタツ株式会社 | Imaging lens |
| TWI639038B (en) * | 2017-01-05 | 2018-10-21 | 先進光電科技股份有限公司 | Optical image capturing system |
| TWI641889B (en) * | 2017-01-05 | 2018-11-21 | 先進光電科技股份有限公司 | Optical image capturing system |
| CN111308657B (en) * | 2017-03-13 | 2022-03-22 | 浙江舜宇光学有限公司 | Image pickup lens group |
| CN108490588B (en) * | 2018-06-06 | 2023-05-26 | 浙江舜宇光学有限公司 | Optical imaging lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009186625A (en) * | 2008-02-05 | 2009-08-20 | Fujinon Corp | Imaging lens and imaging apparatus using the same |
| JP2009288776A (en) * | 2008-04-28 | 2009-12-10 | Optical Logic Inc | Imaging lens |
| TWI447473B (en) * | 2011-03-25 | 2014-08-01 | Largan Precision Co Ltd | Photographing optical lens assembly |
| CN203606558U (en) * | 2013-10-30 | 2014-05-21 | 浙江舜宇光学有限公司 | Imaging lens |
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