CN207440376U - Low distortion wide-angle optics and its camera module of application - Google Patents
Low distortion wide-angle optics and its camera module of application Download PDFInfo
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- CN207440376U CN207440376U CN201721485635.0U CN201721485635U CN207440376U CN 207440376 U CN207440376 U CN 207440376U CN 201721485635 U CN201721485635 U CN 201721485635U CN 207440376 U CN207440376 U CN 207440376U
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Abstract
The utility model embodiment discloses a kind of low distortion wide-angle optics, is equipped with successively from object plane to image planes along optical axis：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens；The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is just；The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of 3rd lens is convex surface, and image planes side is concave surface, and focal power is just；4th lens are biconvex lens, and focal power is just；The object plane side of 5th lens is concave surface, and image planes side is plane, and focal power is negative；6th lens are biconvex lens, and focal power is just.The utility model embodiment also discloses a kind of camera module.The utility model embodiment is mainly made of six pieces of lens, and lens piece number is few, simple in structure, integral miniaturization；It is mutually combined using different lens, there are the favorable optical performances such as wide-angle, high pixel, low distortion, suitable for the fields such as monitoring of taking photo by plane.
Description
Technical field：
It is especially a kind of to be applied to monitoring of taking photo by plane the utility model is related to a kind of optical system and its camera module of application
Such as low distortion wide-angle optics of unmanned plane, aerial photography device field and its camera module of application.
Background technology：
Existing to be suitable for the optical system of monitoring field of taking photo by plane, generally existing eyeglass piece number is more, it is complicated the defects of.
The content of the invention：
To overcome the problems, such as that existing optical system is excessive, complicated there are eyeglass, the utility model embodiment provides
A kind of low distortion wide-angle optics.
Low distortion wide-angle optics is equipped with successively along optical axis from object plane to image planes：First lens, the second lens, the 3rd
Lens, the 4th lens, the 5th lens and the 6th lens；
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is just；
The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 3rd lens is convex surface, and image planes side is concave surface, and focal power is just；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 5th lens is concave surface, and image planes side is plane, and focal power is negative；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is just.
On the other hand, the utility model embodiment additionally provides a kind of camera module.
Camera module including at least optical lens, is equipped with low distortion wide angle optical system described above in optical lens
System.
The utility model embodiment is mainly made of six pieces of lens, and lens piece number is few, simple in structure, integral miniaturization；
It is mutually combined using different lens, there are the favorable optical performances such as wide-angle, high pixel, low distortion, suitable for the monitoring such as nothing of taking photo by plane
The fields such as man-machine, aerial photography device.
Description of the drawings：
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the optical system of the utility model or the structure diagram of camera module；
Fig. 2 is the optical system of the utility model or the curvature of field, the distortion curve figure of camera module；
Fig. 3 is the optical system of the utility model or the chromaticity difference diagram of camera module；
Fig. 4 is the optical system of the utility model or the MTF curve figure of camera module.
Specific embodiment：
The technical issues of in order to solve the utility model, technical solution and advantageous effect are more clearly understood, below
With reference to accompanying drawings and embodiments, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example is only used to explain the utility model, is not used to limit the utility model.
As shown in Figure 1, low distortion wide-angle optics, is equipped with successively along optical axis from object plane to image planes：First lens 1,
Two lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5 and the 6th lens 6.
The object plane side of first lens 1 is convex surface, and image planes side is concave surface, and focal power is just；
The object plane side of second lens 2 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 3rd lens 3 is convex surface, and image planes side is concave surface, and focal power is just；
The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 5th lens 5 is concave surface, and image planes side is plane, and focal power is negative；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is just.
The utility model embodiment is mainly made of six pieces of lens, and lens piece number is few, simple in structure, integral miniaturization；
It is mutually combined using different lens, there are the favorable optical performances such as wide-angle, high pixel, low distortion, suitable for the monitoring such as nothing of taking photo by plane
The fields such as man-machine, aerial photography device.
Further, in the present embodiment, the 4th lens 4 and the mutually glued formation compound lens of the 5th lens 5 combine light
Focal power is just.
Yet further, the combined focal length f45 of the preferred embodiment as the present embodiment, the 4th lens 4 and the 5th lens 5 expires
Foot：0.35<f/f45<0.63, wherein, f is the focal length of entire optical system.It is simple in structure, integral miniaturization, it is ensured that good
Optical property.
Further, non-limiting as the specific embodiment of this programme, each lens of the optical system meet such as
Lower condition：
(1)0<f/f1<0.1；
(2)-0.98<f/f2<-0.50；
(3)0.1<f/f3<0.25；
(4)0.35<f/f45<0.63；
(5)0.37<f/f6<0.60；
Wherein, f1 be the first lens 1 focal length, f2 be the second lens 2 focal length, f3 be the 3rd lens 3 focal length, f45
For the combined focal length of the 4th lens 4 and the 5th lens 5, f6 is the focal length of the 6th lens 6, and f is the focal length of entire optical system.It adopts
It is mutually combined with different lens, there are the favorable optical performances such as wide-angle, high pixel, low distortion.
Further, it is non-limiting as the specific embodiment of this programme, focal length f1, the material folding of the first lens 1
Penetrate rate Nd1, material Abbe constant Vd1 satisfaction：0<f/f1<0.1, Nd1 ＞ 1.80, Vd1 ＜ 50, wherein, f is entire optical system
Focal length.It is simple in structure, it is ensured that good optical property.
Further, non-limiting as the specific embodiment of this programme, the second lens 2 are plastic aspheric lenes,
Its focal length f2, Refractive Index of Material Nd2, material Abbe constant Vd2 meet：-0.98<f/f2<- 0.50, Nd2 ＜ 1.56, Vd2 ＞
55, wherein, f is the focal length of entire optical system.It is simple in structure, it is ensured that good optical property.
Yet further, non-limiting as the specific embodiment of this programme, the 3rd lens 3 are aspherical for plastic cement
Mirror, focal length f3, Refractive Index of Material Nd3, material Abbe constant Vd3 meet：0.1<f/f3<0.25, Nd3 ＞ 1.61, Vd3 ＜
26, wherein, f is the focal length of entire optical system.It is simple in structure, it is ensured that good optical property.
Specifically, non-limiting as the specific embodiment of this programme, the combination of the 4th lens 4 and the 5th lens 5 is burnt
Meet away from f45：0.35<f/f45<0.63, Refractive Index of Material Nd4, the material Abbe constant Vd4 of the 4th lens 4 meet：Nd4 ＜
1.78, Vd4 ＞ 49；Refractive Index of Material Nd5, the material Abbe constant Vd5 of 5th lens 5 meet：Nd5 ＞ 1.84, Vd5 ＜ 24；
Wherein, f is the focal length of entire optical system.It is simple in structure, it is ensured that good optical property.
Further, non-limiting as the specific embodiment of this programme, the 6th lens 6 are plastic aspheric lenes,
Its focal length f6, Refractive Index of Material Nd6, material Abbe constant Vd6 meet：0.37<f/f6<0.60, Nd6 ＜ 1.56, Vd6 ＞ 55,
Wherein, f is the focal length of entire optical system.It is simple in structure, it is ensured that good optical property.
Yet further, the diaphragm STO of optical system is between the 3rd lens 3 and the 4th lens 4, close to the 4th lens
Side.It is simple in structure, for adjusting the intensity of light beam.
Specifically, in the present embodiment, the focal length f of this optical system is 3.10mm, and stop index FNo. is 2.6, horizontal
2 ω=92.5 ° of field angle, match 1/2.3 " sensor, and optics overall length TTL is 16.9mm.The basic ginseng of items of this optical system
Number is as shown in the table：
| Surface | Radius of curvature R (mm) | Thickness D (mm) | Refractive index Nd | Dispersion values Vd |
| S1 | 12.891 | 1.36 | 1.804 | 46.57 |
| S2 | 17.365 | 0.74 | ||
| S3 | 6.153 | 0.595 | 1.535 | 55.78 |
| S4 | 1.387 | 3.24 | ||
| S5 | 4.341 | 1.521 | 1.614 | 25.57 |
| S6 | 6.449 | 0.425 | ||
| STO | It is infinitely great | 0.056 | ||
| S8 | 4.350 | 2.55 | 1.773 | 49.61 |
| S9 | -2.994 | 0.48 | 1.847 | 23.79 |
| S10 | It is infinitely great | 0.35 | ||
| S11 | 12.146 | 0.91 | 1.535 | 55.78 |
| S12 | -5.132 | 0.5 | ||
| S13 | It is infinitely great | 0.80 | 1.51680 | 64.20 |
In upper table, along optical axis from object plane to image planes, S1, S2 correspond to two surfaces of the first lens 1；S3, S4 are corresponded to
Two surfaces of the second lens 2；S5, S6 correspond to two surfaces of the 3rd lens 3；STO corresponds to optical system aperture diaphragm 7
Position；S8, S9 correspond to two surfaces of the 4th lens 4；S9, S10 correspond to two surfaces of the 5th lens 5；S11,
S12 corresponds to two surfaces of the 6th lens 6；S13 corresponds to Sensor imaging surfaces 8.
More specifically, the surface of second lens 2, the 3rd lens 3 and the 6th lens 6 is aspherical shape, meet
Below equation：
Wherein, parameter c=1/R is the curvature corresponding to radius, and y is radial coordinate, and unit is identical with length of lens unit, and k is
Circular cone whose conic coefficient, a1To a8Coefficient corresponding to respectively each radial coordinate.The S3 surfaces of second lens 2 and S4
The aspherical dependency number on the S11 surfaces and S12 surfaces on surface, the S5 surfaces of the 3rd lens 3 and S6 surfaces and the 6th lens 6
It is worth as shown in the table：
| K | α1 | α2 | α3 | α4 | α5 | α6 | α7 | |
| S3 | 0.2368 | 0 | -0.004197 | 2.589E-06 | 1.953E-06 | 1.065E-07 | -6.296E-09 | |
| S4 | -0.7806 | 0 | 0.014289 | -5.590E-03 | 4.232E-03 | -1.312E-03 | 1.657E-04 | -6.169E-06 |
| S5 | 1.8017 | 0 | 0.003466 | 2.026E-04 | 9.699E-05 | -7.946E-04 | 8.788E-04 | -3.823E-04 |
| S6 | -6.9483 | 0 | 0.007847 | 7.675E-04 | 6.104E-03 | -1.258E-02 | 1.052E-02 | -4.293E-03 |
| S11 | -203.64 | 0 | 0.005958 | -2.214E-03 | -3.729E-05 | 1.928E-04 | -5.585E-05 | 5.154E-06 |
| S12 | 1.6305 | 0 | 0.007486 | 4.143E-04 | 2.655E-04 | -2.497E-04 | 8.760E-05 | -1.461E-05 |
As can be seen that the optical system in the present embodiment has wide-angle, high pixel, low distortion etc. well in from Fig. 2 to Fig. 4
Optical property, suitable for the monitoring such as unmanned plane, aerial photography device field of taking photo by plane.
A kind of camera module including at least optical lens, is equipped with low distortion wide-angle light described above in optical lens
System.
The utility model embodiment is mainly made of six pieces of lens, and lens piece number is few, simple in structure, integral miniaturization；
It is mutually combined using different lens, there are the favorable optical performances such as wide-angle, high pixel, low distortion, suitable for the monitoring such as nothing of taking photo by plane
The fields such as man-machine, aerial photography device.
It is to combine one or more embodiments that particular content provides as described above, does not assert the tool of the utility model
Body implementation is confined to these explanations.All method, structures with the utility model etc. are approximate, identical or new for this practicality
Several technology deduction or replace are made under type concept thereof, should all be considered as the scope of protection of the utility model.
Claims (10)
1. low distortion wide-angle optics is equipped with successively along optical axis from object plane to image planes：First lens, the second lens, the 3rd are thoroughly
Mirror, the 4th lens, the 5th lens and the 6th lens；It is characterized in that,
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is just；
The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 3rd lens is convex surface, and image planes side is concave surface, and focal power is just；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 5th lens is concave surface, and image planes side is plane, and focal power is negative；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is just.
2. low distortion wide-angle optics according to claim 1, which is characterized in that the 4th lens and the 5th lens are mutual
Gluing forms compound lens, and combination focal power is just.
3. low distortion wide-angle optics according to claim 2, which is characterized in that the group of the 4th lens and the 5th lens
Complex focus f45 meets：0.35<f/f45<0.63, wherein, f is the focal length of entire optical system.
4. low distortion wide-angle optics according to claim 1, which is characterized in that each lens of the optical system meet
Following condition：
(1)0<f/f1<0.1；
(2)-0.98<f/f2<-0.50；
(3)0.1<f/f3<0.25；
(4)0.35<f/f45<0.63；
(5)0.37<f/f6<0.60；
Wherein, f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is the focal length of the 3rd lens, and f45 is saturating for the 4th
The combined focal length of mirror and the 5th lens, f6 are the focal length of the 6th lens, and f is the focal length of entire optical system.
5. low distortion wide-angle optics according to claim 1, which is characterized in that focal length f1, the material of the first lens
Refractive index Nd1, material Abbe constant Vd1 meet：0<f/f1<0.1, Nd1 ＞ 1.80, Vd1 ＜ 50, wherein, f is entire optical system
The focal length of system.
6. low distortion wide-angle optics according to claim 1, which is characterized in that the second lens are aspherical for plastic cement
Mirror, focal length f2, Refractive Index of Material Nd2, material Abbe constant Vd2 meet：-0.98<f/f2<- 0.50, Nd2 ＜ 1.56, Vd2
＞ 55, wherein, f is the focal length of entire optical system.
7. low distortion wide-angle optics according to claim 1, which is characterized in that the 3rd lens are aspherical for plastic cement
Mirror, focal length f3, Refractive Index of Material Nd3, material Abbe constant Vd3 meet：0.1<f/f3<0.25, Nd3 ＞ 1.61, Vd3 ＜
26, wherein, f is the focal length of entire optical system.
8. low distortion wide-angle optics according to claim 1, which is characterized in that the group of the 4th lens and the 5th lens
Complex focus f45 meets：0.35<f/f45<0.63, Refractive Index of Material Nd4, the material Abbe constant Vd4 of the 4th lens meet：Nd4
＜ 1.78, Vd4 ＞ 49；Refractive Index of Material Nd5, the material Abbe constant Vd5 of 5th lens meet：Nd5 ＞ 1.84, Vd5 ＜ 24；
Wherein, f is the focal length of entire optical system.
9. low distortion wide-angle optics according to claim 1, which is characterized in that the 6th lens are aspherical for plastic cement
Mirror, focal length f6, Refractive Index of Material Nd6, material Abbe constant Vd6 meet：0.37<f/f6<0.60, Nd6 ＜ 1.56, Vd6 ＞
55, wherein, f is the focal length of entire optical system.
10. camera module, including at least optical lens, which is characterized in that any one of claim 1-9 is equipped in optical lens
The low distortion wide-angle optics.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975954A (en) * | 2019-04-04 | 2019-07-05 | 广东弘景光电科技股份有限公司 | High pixel road monitoring optical system and its camera module of application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975954A (en) * | 2019-04-04 | 2019-07-05 | 广东弘景光电科技股份有限公司 | High pixel road monitoring optical system and its camera module of application |
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