CN206876948U - The high pixel fish eye optical systems of small size and its camera module of application - Google Patents
The high pixel fish eye optical systems of small size and its camera module of application Download PDFInfo
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- CN206876948U CN206876948U CN201720428752.7U CN201720428752U CN206876948U CN 206876948 U CN206876948 U CN 206876948U CN 201720428752 U CN201720428752 U CN 201720428752U CN 206876948 U CN206876948 U CN 206876948U
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Abstract
The utility model embodiment discloses a kind of high pixel fish eye optical systems of small size, 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, the 6th lens and the 7th lens；First lens, the second lens, the object plane side of the 3rd lens are convex surface, and image planes side is concave surface, and its focal power is negative；4th lens and the 5th lens are biconvex lens, and its focal power is just；The object plane side of 6th lens is concave surface, and image planes side is convex surface, and its focal power is negative；7th lens are biconvex lens, and its focal power is just；Wherein, the 5th lens and the mutually glued formation compound lens of the 6th lens.On the other hand, the utility model embodiment additionally provides a kind of camera module.The utility model is made up of seven pieces of lens, simple in construction, small volume；Meanwhile with the superperformance such as low distortion and 12,000,000 high pixels, suitable for panorama VR cameras and 360 ° without fields such as dead angle monitoring.
Description
Technical field：
The camera module of a kind of fish eye optical systems and its application is the utility model is related to, it is especially a kind of to be applied to panorama
The small distortion of VR cameras and 360 ° without fields such as dead angle monitoring, small size, the fish eye optical systems of high pixel and its application are taken the photograph
As module.
Background technology：
It is existing suitable for panorama VR cameras and 360 ° fish eye optical systems or camera module without fields such as dead angle monitoring, it is general
Store-through is eyeglass is excessive, complicated, volume is larger the defects of.
The content of the invention：
To overcome existing fish eye optical systems or camera module the problem of eyeglass is excessive, complicated, volume is larger to be present,
On the one hand the utility model embodiment provides a kind of high pixel fish eye optical systems of small size.
The high pixel fish eye optical systems of small size, are sequentially provided with along optical axis from object plane to image planes：It is first lens, second saturating
Mirror, the 3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens；
The object plane side of first lens is convex surface, and image planes side is concave surface, and its focal power is negative；
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 negative；
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 convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 6th lens is concave surface, and image planes side is convex surface, and its focal power is negative；
The object plane side of 7th lens is convex surface, and image planes side is convex surface, and its focal power is just；
Wherein, the 5th lens and the mutually glued formation compound lens of the 6th lens, the compound lens have positive focal power.
On the other hand, the utility model embodiment additionally provides a kind of camera module.
Camera module, including at least optical lens, small size described above high pixel flake is installed in optical lens
Optical system.
The utility model embodiment, it is made up of seven pieces of lens, simple in construction, small volume；Meanwhile using different lens phases
Mutually combination and reasonable distribution focal power realize the superperformances such as low distortion and 12,000,000 high pixels, suitable for panorama VR
Camera and 360 ° are without fields such as dead angle monitoring.
Brief description of the drawings：
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of imaging optical system of the present utility model or camera module；
Fig. 2 is the curvature of field, the distortion curve figure of imaging optical system of the present utility model or camera module；
Fig. 3 is the chromaticity difference diagram of imaging optical system of the present utility model or camera module；
Fig. 4 is the MTF curve figure of imaging optical system of the present utility model or camera module；
Fig. 5 is the relative illumination figure of imaging optical system of the present utility model or camera module.
Embodiment：
In order that technical problem, technical scheme and beneficial effect that the utility model solves are more clearly understood, below
With reference to drawings and Examples, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
As shown in figure 1, a kind of high pixel fish eye optical systems of small size, 9 it is sequentially provided with from object plane to image planes along optical axis：The
One lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6 and the 7th lens 7；First
The object plane side of lens 1 is convex surface, and image planes side is concave surface, and its focal power is negative；The object plane side of second lens 2 is convex surface, image planes side
For concave surface, 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 negative；4th is saturating
The object plane side of mirror 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 convex surface, and image planes side is
Convex surface, its focal power is just；The object plane side of 6th lens 6 is concave surface, and image planes side is convex surface, and its focal power is negative；7th lens 7
Object plane side be convex surface, image planes side is convex surface, and its focal power is just；Wherein, the 5th lens 5 and the mutually glued shape of the 6th lens 6
Into compound lens, the compound lens has positive focal power.
The utility model embodiment, it is made up of seven pieces of lens, simple in construction, small volume；Meanwhile using different lens phases
Mutually combination and reasonable distribution focal power realize the superperformances such as low distortion and 12,000,000 high pixels, suitable for panorama VR
Camera and 360 ° are without fields such as dead angle monitoring.
Further, each lens of the optical system meet following condition：(1)-0.2<f/f1<-0.09；(2)-0.45<
f/f2<-0.25；(3)-0.22<f/f3<-0.10；(4)0.38<f/f4<0.51；(5)0.24<f/f56<0.42；(6)0.37<
f/f7<0.55；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 f4 is
The focal length of 4th lens, f56 are the combined focal length of the 5th lens and the 6th lens, and f7 is the focal length of the 7th lens, and f is whole light
The focal length of system.
Yet further, the Refractive Index of Material Nd2 of the second lens 2, material Abbe constant Vd2 meet：Nd2 ＜ 1.60, Vd2
＞ 61.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd3 of the 3rd lens 3, material Abbe constant Vd3 meet：Nd3 ＞ 1.80, Vd3
＜ 26.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd4 of the 4th lens 4, material Abbe constant Vd4 meet：Nd4 ＞ 1.75, Vd4
＜ 28.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd5 of the 5th lens 5, material Abbe constant Vd5 meet：Nd5 ＞ 1.80, Vd5 ＜
47.It is simple in construction, it is ensured that good optical property.
Yet further, the Refractive Index of Material Nd6 of the 6th lens 6, material Abbe constant Vd6 meet：Nd6 ＞ 1.82, Vd6
＜ 25.It is simple in construction, it is ensured that good optical property.
Further, the Refractive Index of Material Nd7 of the 7th lens 7, material Abbe constant Vd7 meet：Nd7 ＜ 1.79, Vd7
＞ 45.It is simple in construction, it is ensured that good optical property.
Further, the diaphragm of optical system is arranged between the 4th lens 4 and the 5th lens 5.It is simple in construction, it is used for
Adjust the intensity of light beam.
Specifically, the lens 7 of the first lens 1 to the 7th are all glass lens.Good optical property can be ensured.
More specifically, the second lens 2, the 3rd lens 3, the 6th lens 6 and the 7th lens 7 are glass aspheric lenses.Can
To improve the parsing power of optical lens, distortion is small, and pixel is high, and optical property is good.
Specifically, in the present embodiment, the focal length f of this optical system is 1.49mm, and stop index FNo. is 2.4, visual field
ω=180 ° of angle 2, optics overall length TTL are 11.3mm.Every basic parameter of this optical system is as shown in the table：
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；S7, S8 are corresponded to positioned at the 3rd lens 3
Two surfaces；STO, S10 correspond to two positions of optical system aperture diaphragm 8；S11, S12 correspond to the two of the 5th lens 5
Individual surface；S12, S13 correspond to two surfaces of the 6th lens 6；S14, S15 correspond to two surfaces of the 7th lens 7；S16、
S17 corresponds to two surfaces of the optical filter between the 7th lens 7 and image planes 9.
More specifically, the second lens 2, the 3rd lens 3, the 6th lens 6 and the 7th lens 7 meet following aspherical equation
Formula：
Or
In formula, parameter c is the curvature corresponding to radius, and y is radial coordinate (its unit is identical with length of lens unit), and k is circle
Bore whose conic coefficient.When k-factor is less than -1, face type curve is hyperbola, is parabola during equal to -1, between -1 to 0 it
Between when for ellipse, be circle during equal to 0.a1To a8And β1To β8The coefficient corresponding to each radial coordinate is represented respectively, passes through the above
Parameter can accurately set the geomery of both-sided aspherical before and after lens.
Second lens 2, the 3rd lens 3, the even aspheric surface correlation values such as following table institute of the 6th lens 6 and the 7th lens 7
Show：
| K | α1 | α2 | α3 | α4 | α5 | |
| S3 | 0 | 0 | -3.095E-03 | -4.022E-04 | 3.1021E-05 | -7.6988E-07 |
| S5 | -0.564 | 0 | 0.029940 | 9.0202E-03 | -3.0373E-03 | 6.1143E-04 |
| S6 | -0.806 | 0 | 0.051424 | 0.0359063 | -0.0171262 | 9.6820E-03 |
| S13 | -1.801 | 0 | -0.024580 | 9.4378E-03 | -1.5610E-03 | 6.6665E-04 |
| S14 | -1.612 | 0 | -0.020797 | 4.6228E-03 | 1.3025E-03 | 1.1957E-04 |
| S15 | 11.686 | 0 | 0.011148 | -2.8554E-03 | -8.8028E-05 | 1.9240E-05 |
The aspherical correlation values of odd of second lens 2 are as shown in the table：
| K | β1 | β2 | β3 | β4 | β5 | |
| S4 | -0.9210 | 0 | 0 | -8.224E-04 | 0.041704 | 0.025560 |
The optical system in the present embodiment is can be seen that in from Fig. 2 to Fig. 5, is mutually combined and closes using different lens
Reason distribution focal power realizes the superperformances such as low distortion and 12,000,000 high pixels.
A kind of camera module, including at least optical lens, small size described above high pixel is installed in optical lens
Fish eye optical systems.
The utility model embodiment, it is made up of seven pieces of lens, simple in construction, small volume；Meanwhile using different lens phases
Mutually combination and reasonable distribution focal power realize the superperformances such as low distortion and 12,000,000 high pixels, suitable for panorama VR
Camera and 360 ° are without fields such as dead angle monitoring.
It is to combine one or more embodiments that particular content provides as described above, does not assert tool of the present utility model
Body is implemented to be confined to these explanations.It is all approximate with method of the present utility model, structure etc., identical or new for this practicality
Some 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. the high pixel fish eye optical systems of small size, are sequentially provided with along optical axis from object plane to image planes：First lens, the second lens,
3rd lens, the 4th lens, the 5th lens, the 6th lens and the 7th 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 negative；
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 negative；
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 convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 6th lens is concave surface, and image planes side is convex surface, and its focal power is negative；
The object plane side of 7th lens is convex surface, and image planes side is convex surface, and its focal power is just；
Wherein, the 5th lens and the mutually glued formation compound lens of the 6th lens, the compound lens have positive focal power.
2. the high pixel fish eye optical systems of small size according to claim 1, it is characterised in that the optical system it is each
Mirror meets following condition：
(1)-0.2<f/f1<-0.09；
(2)-0.45<f/f2<-0.25；
(3)-0.22<f/f3<-0.10；
(4)0.38<f/f4<0.51；
(5)0.24<f/f56<0.42；
(6)0.37<f/f7<0.55；
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 f4 is the 4th saturating
The focal length of mirror, f56 are the combined focal length of the 5th lens and the 6th lens, and f7 is the focal length of the 7th lens, and f is whole optical system
Focal length.
3. the high pixel fish eye optical systems of small size according to claim 1 or 2, it is characterised in that the material of the second lens
Expect that refractive index Nd2, material Abbe constant Vd2 meet：Nd2 ＜ 1.60, Vd2 ＞ 61.
4. the high pixel fish eye optical systems of small size according to claim 1 or 2, it is characterised in that the material of the 3rd lens
Expect that refractive index Nd3, material Abbe constant Vd3 meet：Nd3 ＞ 1.80, Vd3 ＜ 26.
5. the high pixel fish eye optical systems of small size according to claim 1 or 2, it is characterised in that the material of the 4th lens
Expect that refractive index Nd4, material Abbe constant Vd4 meet：Nd4 ＞ 1.75, Vd4 ＜ 28.
6. the high pixel fish eye optical systems of small size according to claim 1 or 2, it is characterised in that the material of the 5th lens
Expect that refractive index Nd5, material Abbe constant Vd5 meet：Nd5 ＞ 1.80, Vd5 ＜ 47.
7. the high pixel fish eye optical systems of small size according to claim 1 or 2, it is characterised in that the material of the 6th lens
Expect that refractive index Nd6, material Abbe constant Vd6 meet：Nd6 ＞ 1.82, Vd6 ＜ 25.
8. the high pixel fish eye optical systems of small size according to claim 1 or 2, it is characterised in that the material of the 7th lens
Expect that refractive index Nd7, material Abbe constant Vd7 meet：Nd7 ＜ 1.79, Vd7 ＞ 45.
9. the high pixel fish eye optical systems of small size according to claim 1 or 2, it is characterised in that the light of optical system
Door screen is arranged between the 4th lens and the 5th lens.
10. camera module, including at least optical lens, it is characterised in that any one of claim 1-9 is provided with optical lens
The high pixel fish eye optical systems of described small size.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880292A (en) * | 2020-06-20 | 2020-11-03 | 广东弘景光电科技股份有限公司 | Small-size fisheye camera module with ultra-wide angle, ultra-high pixel and low chromatic aberration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880292A (en) * | 2020-06-20 | 2020-11-03 | 广东弘景光电科技股份有限公司 | Small-size fisheye camera module with ultra-wide angle, ultra-high pixel and low chromatic aberration |
| CN111880292B (en) * | 2020-06-20 | 2023-08-22 | 广东弘景光电科技股份有限公司 | Small-volume fisheye camera module with ultra-wide angle, ultra-high pixel and low chromatic aberration |
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