CN107783262A - Low distortion wide-angle imaging module - Google Patents
Low distortion wide-angle imaging module Download PDFInfo
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- CN107783262A CN107783262A CN201711087703.2A CN201711087703A CN107783262A CN 107783262 A CN107783262 A CN 107783262A CN 201711087703 A CN201711087703 A CN 201711087703A CN 107783262 A CN107783262 A CN 107783262A
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- lens
- focal length
- image planes
- optical system
- object plane
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- 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
Abstract
The embodiment of the invention discloses a kind of low distortion wide-angle imaging module, it is sequentially provided with 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 its focal power is just；The object plane side of second lens is convex surface, and image planes side is concave surface, and its focal power is negative；The object plane side of 3rd lens is convex surface, and image planes side is concave surface, and its focal power is just；The object plane side of 4th lens is convex surface, and image planes side is convex surface, and its focal power is just；The object plane side of 5th lens is concave surface, and image planes side is plane, and its focal power is negative；The object plane side of 6th lens is convex surface, and image planes side is convex surface, and its focal power is just.The embodiment of the present invention, it is mainly made up of six pieces of lens, and lens piece number is few, simple in construction, integral miniaturization；It is mutually combined using different lens, there is 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 take photo by plane monitoring such as unmanned plane, aerial photography device field the present invention relates to a kind of camera module
Low distortion wide-angle imaging module.
Background technology：
Existing to be applied to the camera module 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 existing camera module the problem of eyeglass is excessive, complicated to be present, the embodiments of the invention provide one kind
Low distortion wide-angle imaging module.
Low distortion wide-angle imaging module, is sequentially provided with 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 its focal power is just；
The object plane side of second lens is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of 3rd lens is convex surface, and image planes side is concave surface, and its focal power is just；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 5th lens is concave surface, and image planes side is plane, and its focal power is negative；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and its focal power is just.
The embodiment of the present invention, it is mainly made up of six pieces of lens, and lens piece number is few, simple in construction, integral miniaturization；Using
Different lens are mutually combined, have wide-angle, high pixel, it is low distortion etc. favorable optical performance, suitable for take photo by plane monitoring as unmanned plane,
The fields such as aerial photography device.
Brief description of the drawings：
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of the camera module of the present invention；
Fig. 2 is the curvature of field of the camera module of the present invention, distortion curve figure；
Fig. 3 is the chromaticity difference diagram of the camera module of the present invention；
Fig. 4 is the MTF curve figure of the camera module of the present invention.
Embodiment：
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
As shown in figure 1, low distortion wide-angle imaging module, it comprises at least camera lens, the base coordinated with camera lens and is located at
Be used for the light sensitive device for receiving the optical signal from camera lens on base, be provided with optical system in camera lens, optical system along optical axis from
Object plane is sequentially provided with to image planes：First lens 1, the second 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 its focal power is just；
The object plane side of second lens 2 is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of 3rd lens 3 is convex surface, and image planes side is concave surface, and its focal power is just；
The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 5th lens 5 is concave surface, and image planes side is plane, and its focal power is negative；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and its focal power is just.
The embodiment of the present invention, it is mainly made up of six pieces of lens, and lens piece number is few, simple in construction, integral miniaturization；Using
Different lens are mutually combined, have wide-angle, high pixel, it is low distortion etc. favorable optical performance, suitable for take photo by plane monitoring as unmanned plane,
The fields such as aerial photography device.
Further, in the present embodiment, the 4th lens 4 and the mutually glued formation compound lens of the 5th lens 5, it combines light
Focal power is just.
Yet further, the combined focal length f45 of the preferred scheme 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 whole optical system.It is simple in construction, integral miniaturization, it is ensured that good
Optical property.
Further, non-limiting as the 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 whole optical system.Adopt
It is mutually combined with different lens, there is the favorable optical performances such as wide-angle, high pixel, low distortion.
Further, it is non-limiting as the 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 whole optical system
Focal length.It is simple in construction, it is ensured that good optical property.
Further, non-limiting as the 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 whole optical system.It is simple in construction, it is ensured that good optical property.
Yet further, non-limiting as the embodiment of this programme, the 3rd lens 3 are that plastic cement is aspherical
Mirror, its 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 whole optical system.It is simple in construction, it is ensured that good optical property.
Specifically, non-limiting as the 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 whole optical system.It is simple in construction, it is ensured that good optical property.
Further, non-limiting as the 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 whole optical system.It is simple in construction, 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 construction, 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
ω=92.5 ° of the angle of visual field 2,1/2.3 " sensor is matched, 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, its meet with
Lower equation：
Wherein, the curvature corresponding to parameter c=1/R, as radius, y are radial coordinate, and its 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. good 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.
It is to combine one or more embodiments that particular content provides as described above, does not assert the specific reality of the present invention
Apply and be confined to these explanations.It is all approximate with method of the invention, structure etc., identical, or for present inventive concept under the premise of
Some technology deduction or replace are made, should all be considered as protection scope of the present invention.
Claims (10)
1. low distortion wide-angle imaging module, it comprises at least camera lens, the base coordinated with camera lens and is used to connect on base
Receive the light sensitive device of the optical signal from camera lens, be provided with optical system in camera lens, optical system along optical axis from object plane to image planes according to
It is secondary to be provided with：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens；Characterized in that,
The object plane side of first lens is convex surface, and image planes side is concave surface, and its focal power is just；
The object plane side of second lens is convex surface, and image planes side is concave surface, and its focal power is negative；
The object plane side of 3rd lens is convex surface, and image planes side is concave surface, and its focal power is just；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 5th lens is concave surface, and image planes side is plane, and its focal power is negative；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and its focal power is just.
2. low distortion wide-angle imaging module according to claim 1, it is characterised in that the 4th lens and the 5th lens are mutual
Gluing forms compound lens, and it combines focal power as just.
3. low distortion wide-angle imaging module according to claim 2, it is characterised 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 whole optical system.
4. low distortion wide-angle imaging module according to claim 1, it is characterised 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 the 4th saturating
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 whole optical system.
5. low distortion wide-angle imaging module according to claim 1, it is characterised 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 whole optical system
The focal length of system.
6. low distortion wide-angle imaging module according to claim 1, it is characterised in that the second lens are that plastic cement is aspherical
Mirror, 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 whole optical system.
7. low distortion wide-angle imaging module according to claim 1, it is characterised in that the 3rd lens are that plastic cement is aspherical
Mirror, its 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 whole optical system.
8. low distortion wide-angle imaging module according to claim 1, it is characterised 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 whole optical system.
9. low distortion wide-angle imaging module according to claim 1, it is characterised in that the 6th lens are that plastic cement is aspherical
Mirror, 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 whole optical system.
10. low distortion wide-angle imaging module according to claim 1, it is characterised in that the diaphragm STO of optical system is located at
Between 3rd lens and the 4th lens, close to the 4th lens side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711087703.2A CN107783262B (en) | 2017-11-08 | 2017-11-08 | Low-distortion wide-angle camera module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711087703.2A CN107783262B (en) | 2017-11-08 | 2017-11-08 | Low-distortion wide-angle camera module |
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| Publication Number | Publication Date |
|---|---|
| CN107783262A true CN107783262A (en) | 2018-03-09 |
| CN107783262B CN107783262B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711087703.2A Active CN107783262B (en) | 2017-11-08 | 2017-11-08 | Low-distortion wide-angle camera module |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008225332A (en) * | 2007-03-15 | 2008-09-25 | Sony Corp | Imaging lens |
| JP2011107527A (en) * | 2009-11-19 | 2011-06-02 | Sony Corp | Imaging lens and imaging apparatus |
| CN105629443A (en) * | 2016-03-30 | 2016-06-01 | 浙江大华技术股份有限公司 | Lens system and camera lens |
| CN206039007U (en) * | 2016-07-25 | 2017-03-22 | 南阳市海科光电有限责任公司 | Big light ring super wide angle fisheye lens optical system |
-
2017
- 2017-11-08 CN CN201711087703.2A patent/CN107783262B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008225332A (en) * | 2007-03-15 | 2008-09-25 | Sony Corp | Imaging lens |
| JP2011107527A (en) * | 2009-11-19 | 2011-06-02 | Sony Corp | Imaging lens and imaging apparatus |
| CN105629443A (en) * | 2016-03-30 | 2016-06-01 | 浙江大华技术股份有限公司 | Lens system and camera lens |
| CN206039007U (en) * | 2016-07-25 | 2017-03-22 | 南阳市海科光电有限责任公司 | Big light ring super wide angle fisheye lens optical system |
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| CN107783262B (en) | 2023-04-28 |
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