CN107728292A - High pixel ultra wide-angle imaging module - Google Patents
High pixel ultra wide-angle imaging module Download PDFInfo
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- CN107728292A CN107728292A CN201711087710.2A CN201711087710A CN107728292A CN 107728292 A CN107728292 A CN 107728292A CN 201711087710 A CN201711087710 A CN 201711087710A CN 107728292 A CN107728292 A CN 107728292A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims description 30
- 238000009738 saturating Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 12
- 230000000007 visual effect Effects 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 238000004026 adhesive bonding Methods 0.000 description 1
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- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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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
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Abstract
The embodiment of the invention discloses a kind of high pixel ultra 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, the 6th lens, the 7th lens and the 8th lens；First power of lens is negative；Second power of lens is negative；3rd power of lens is negative；4th power of lens is just；5th power of lens is just；6th power of lens is just；7th power of lens is negative；8th power of lens is just；And this optical system meets TTL/EFL≤16.8, wherein, TTL be the first lens object plane side summit of optical system the distance between to imaging surface, EFL is the effective focal length of optical system.The embodiment of the present invention, it is mainly made up of 8 pieces of lens, simple in construction；It is mutually combined using different lens and reasonable distribution focal power, there is the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
Description
Technical field：
The present invention relates to a kind of camera module, especially a kind of high pixel ultra wide-angle imaging module.
Background technology：
With the development of semiconductor technology, the pixel of photo-sensitive cell also also get over by more and more higher, the light-receiving area of photo-sensitive cell
Come it is bigger, ultra-wide angle optical system be intended to higher pixel, bigger target surface development.However, existing wide-angle imaging module, is generally deposited
It is low in pixel, the defects of cost is high.
The content of the invention：
The problem of to overcome existing wide-angle imaging module generally existing pixel low, the embodiments of the invention provide a kind of high picture
Plain ultra wide-angle imaging module.
High pixel ultra wide-angle imaging module, it comprises at least camera lens, the base coordinated with camera lens and used on base
In being provided with optical system in the light sensitive device for receiving the optical signal from camera lens, camera lens, optical system is along optical axis from object plane to picture
Face is sequentially provided with：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and
8th 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 concave surface, and its focal power is negative；
The object plane side of 4th lens 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 convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 7th lens is concave surface, and its focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and its focal power is just；
And this optical system meets TTL/EFL≤16.8, wherein, TTL is the first lens object plane side summit of optical system
The distance between to imaging surface, EFL is the effective focal length of optical system.
The embodiment of the present invention, it is mainly made up of 8 pieces of lens, simple in construction；It is mutually combined using different lens and rationally
Focal power is distributed, there is the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
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 distortion curve figure at+25 DEG C of the camera module of the present invention；
Fig. 3 is the MTF curve figure at+25 DEG C of the camera module of the present invention；
Fig. 4 is the relative illumination figure at+25 DEG C of the camera module of the present invention；
Fig. 5 is the MTF curve figure at -40 DEG C of the camera module of the present invention；
Fig. 6 is the MTF curve figure at+85 DEG C 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, high pixel ultra wide-angle imaging module, it comprises at least camera lens, the base coordinated with camera lens, Yi Jishe
In the light sensitive device for being used to receive the optical signal from camera lens on base, optical system is provided with camera lens, optical system is along optical axis
It is sequentially provided with from object plane to image planes：First lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens the 5, the 6th are saturating
Mirror 6, the 7th lens 7 and the 8th lens 8.
The object plane side of first 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, and image planes side is concave surface, and its focal power is negative；
The object plane side of 3rd lens 3 is concave surface, and its focal power is negative；
The object plane side of 4th lens 4 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, and its focal power is just；
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 object plane side of 7th lens 7 is concave surface, and its focal power is negative；
The object plane side of 8th lens 8 is convex surface, and image planes side is convex surface, and its focal power is just；
And this optical system meets TTL/EFL≤16.8, wherein, TTL is the object plane side summit of the first lens 1 of optical system
The distance between to imaging surface, EFL is the effective focal length of optical system.
The embodiment of the present invention, it is mainly made up of 8 pieces of lens, simple in construction；It is mutually combined using different lens and rationally
Focal power is distributed, there is the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
In the present embodiment, the effective focal length EFL of optical system is the focal length f of whole optical system, the 3rd lens 3,
The image planes side shape of 4th lens 4 and the 7th lens 7, concave surface or convex surface can be used according to the design needs.
Specifically, it is non-limiting as the preferred embodiment of this programme, in the present embodiment, the object plane side of the 3rd lens 3
For concave surface, image planes side is convex surface, and its focal power is negative；The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, its light focus
Spend for just；The object plane side of 7th lens 7 is concave surface, and image planes side is concave surface, and its focal power is negative.
Further, the embodiment as this programme, each lens of the optical system meet following condition：
(1)-15<f1<-5；
(2)-5<f2<-2；
(3)-50<f3<-10；
(4)3<f4<15；
(5)3<f5<15；
(6)2<f6<8；
(7)-10<f7<-2；
(8)2<f8<15；
Wherein, f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2, and f3 is the focal length of the 3rd lens 3, and f4 is
The focal length of 4th lens 4, f5 are the focal length of the 5th lens 5, and f6 is the focal length of the 6th lens 6, and f7 is the focal length of the 7th lens 7,
F8 is the focal length of the 8th lens 8.By different lens be mutually combined and its reasonable distribution focal power, there is optical system big
The superperformances such as aperture, big visual angle, high pixel and extraordinary athermal.
Yet further, non-limiting as the embodiment of this programme, each lens of the optical system meet such as
Lower condition：
(1)-12<f1/f<-2；
(2)-5<f2/f<-2；
(3)-20<f3/f<-5；
(4)2<f4/f<10；
(5)2<f5/f<10；
(6)1.5<f6/f<5；
(7)-5<f7/f<-1.5；
(8)2<f8/f<10；
Wherein, f be whole optical system focal length, f1 be the first lens 1 focal length, f2 be the second lens 2 focal length, f3
For the focal length of the 3rd lens 3, f4 is the focal length of the 4th lens 4, and f5 is the focal length of the 5th lens 5, and f6 is Jiao of the 6th lens 6
Away from f7 is the focal length of the 7th lens 7, and f8 is the focal length of the 8th lens 8.By different lens be mutually combined and its reasonable distribution
Focal power, make optical system that there is the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
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：-12<f1/f<- 2,1.72<Nd1<1.95 40<Vd1<60, wherein, f is whole
The focal length of optical system.It is simple in construction, it is ensured that good optical property.
Further, it is non-limiting as the embodiment of this programme, focal length f2, the material folding of the second lens 2
Penetrate rate Nd2, material Abbe constant Vd2 satisfaction：-5<f2/f<- 2,1.45<Nd2<1.65 40<Vd2<60, wherein, f is whole light
The focal length of system.It is simple in construction, it is ensured that good optical property.
Further, it is non-limiting as the embodiment of this programme, the focal length f3 of the 3rd lens 3, material refraction
Rate Nd3, material Abbe constant Vd3 meet：-20<f3/f<- 5,1.55<Nd3<1.75 15<Vd3<35, wherein, f is whole light
The focal length of system.It is simple in construction, it is ensured that good optical property.
Yet further, it is non-limiting as the embodiment of this programme, focal length f4, the material folding of the 4th lens 4
Penetrate rate Nd4, material Abbe constant Vd4 satisfaction：2<f4/f<10,1.75<Nd4<1.95 15<Vd4<40.It is simple in construction, it is ensured that
Good optical property.
Further, it is non-limiting as the embodiment of this programme, focal length f5, the material folding of the 5th lens 5
Penetrate rate Nd5, material Abbe constant Vd5 satisfaction：2<f5/f<10,1.45<Nd5<1.65 30<Vd5<70, wherein, f is whole light
The focal length of system.It is simple in construction, it is ensured that good optical property.
Further, it is non-limiting as the embodiment of this programme, focal length f6, the material folding of the 6th lens 6
Penetrate rate Nd6, material Abbe constant Vd6 satisfaction：1.5<f6/f<5,1.55<Nd6<1.75 40<Vd6<60, wherein, f is whole light
The focal length of system.It is simple in construction, it is ensured that good optical property.
Yet further, it is non-limiting as the embodiment of this programme, focal length f7, the material folding of the 7th lens 7
Penetrate rate Nd7, material Abbe constant Vd7 satisfaction：-5<f7/f<- 1.5,1.75<Nd7<1.95 15<Vd7<40, wherein, f is whole
The focal length of optical system.It is simple in construction, it is ensured that good optical property.
Further, it is non-limiting as the embodiment of this programme, the Refractive Index of Material Nd8 of the 8th lens 8,
Material Abbe constant Vd8 meets：1.45<Nd8<1.65 40<Vd8<60.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 and the 7th lens 7 are mutual
Gluing forms compound lens, and the focal length f67 of compound lens meets following condition：
-500<f67<-10.It is simple and compact for structure, it is ensured that good optical property.
Specifically, the second lens 2, the 3rd lens 3 and the 8th lens 8 are plastic aspheric lens, can be effectively
Influence of the spherical aberration to lens performance is eliminated, the parsing power of optical lens is improved, athermal can be effectively realized, dropped simultaneously
The difficulty of processing and production cost of low camera lens.
More specifically, the diaphragm 9 of optical system is between the 4th lens 4 and the 5th lens 5.It is simple in construction, for adjusting
Save the intensity of light beam.Preferably, diaphragm 9 is arranged on the side of the 4th lens 4, in the present embodiment, the position of each lens and diaphragm
It is fixed to put.
Further, it is non-limiting as the embodiment of this programme, band is provided between the 8th lens 8 and image planes 10
Pass filter.The infrared light in environment is may filter that, to avoid image from producing red aeration phenomenon.
Specifically, in the present embodiment, the focal length f of this optical system is 1.307mm, and stop index FNo. is 2.0, visual field
ω=200 ° of angle 2, the focal length f1=-13.780mm of the first lens 1, the focal length f2=-3.949mm of the second lens 2, the 3rd lens
3 focal length f3=-22.127mm, the focal length f4=9.274mm of the 4th lens 4, the focal length f5=6.184mm of the 5th lens 5, the
The focal length f6=3.600mm, the focal length f7=-3.072mm of the 7th lens 7, the focal length f8=of the 8th lens 8 of six lens 6
5.986mm.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 correspond to two of the 4th lens 4
Surface；S9 is diaphragm STO；S10, S11 correspond to two surfaces of the 5th lens 5；S12, S13 correspond to the two of the 6th lens 6
Individual surface；S13, S14 correspond to two surfaces of the 7th lens 7；S15, S16 correspond to two surfaces of the 8th lens 8；S17、
S18 corresponds to two surfaces of bandpass filter；IMA is image planes 10.
More specifically, the surface of second lens 2, the 3rd lens 3 and the 8th lens 8 is aspherical shape, it is full
Sufficient below equation： Wherein, parameter
Curvature corresponding to c=1/R, as radius, y are radial coordinate, and its unit is identical with length of lens unit, and k is that circular cone is secondary
Curve coefficients, a1To a5Coefficient corresponding to respectively each radial coordinate.The S3 surfaces of second lens 2 and S4 surfaces, the 3rd
The aspherical correlation values on the S5 surfaces of lens 3 and the S15 surfaces and S16 surfaces of S6 surfaces and the 8th lens 8 such as following table institute
Show：
As can be seen that the optical system in the present embodiment has high-resolution and extraordinary athermal in from Fig. 2 to Fig. 6
Performance.
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. high pixel ultra wide-angle imaging module, it comprises at least camera lens, the base coordinated with camera lens and is used on base
The light sensitive device of the optical signal from camera lens is received, is provided with optical system in camera lens, optical system is along optical axis from object plane to image planes
It is sequentially provided with：First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and
Eight 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 concave surface, and its focal power is negative；
The object plane side of 4th lens 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 convex surface, and image planes side is convex surface, and its focal power is just；
The object plane side of 7th lens is concave surface, and its focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and its focal power is just；
And this optical system meets TTL/EFL≤16.8, wherein, TTL be optical system the first lens object plane side summit into
The distance between image planes, EFL are the effective focal length of optical system.
2. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that each lens of the optical system are expired
The following condition of foot：
(1)-15<f1<-5；
(2)-5<f2<-2；
(3)-50<f3<-10；
(4)3<f4<15；
(5)3<f5<15；
(6)2<f6<8；
(7)-10<f7<-2；
(8)2<f8<15；
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, f5 are the focal length of the 5th lens, and f6 is the focal length of the 6th lens, and f7 is the focal length of the 7th lens, and f8 is the 8th saturating
The focal length of mirror.
3. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that each lens of the optical system are expired
The following condition of foot：
(1)-12<f1/f<-2；
(2)-5<f2/f<-2；
(3)-20<f3/f<-5；
(4)2<f4/f<10；
(5)2<f5/f<10；
(6)1.5<f6/f<5；
(7)-5<f7/f<-1.5；
(8)2<f8/f<10；
Wherein, f is the focal length of whole optical system, and f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is the 3rd
The focal length of lens, f4 are the focal length of the 4th lens, and f5 is the focal length of the 5th lens, and f6 is the focal length of the 6th lens, and f7 is the 7th
The focal length of lens, f8 are the focal length of the 8th lens.
4. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that focal length f1, the material of the first lens
Expect that refractive index Nd1, material Abbe constant Vd1 meet：-12<f1/f<- 2,1.72<Nd1<1.95 40<Vd1<60, wherein, f is
The focal length of whole optical system.
5. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that focal length f2, the material of the second lens
Expect that refractive index Nd2, material Abbe constant Vd2 meet：-5<f2/f<- 2,1.45<Nd2<1.65 40<Vd2<60, wherein, f is whole
The focal length of individual optical system.
6. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that focal length f3, the material of the 3rd lens
Expect that refractive index Nd3, material Abbe constant Vd3 meet：-20<f3/f<- 5,1.55<Nd3<1.75 15<Vd3<35, wherein, f is
The focal length of whole optical system.
7. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that focal length f4, the material of the 4th lens
Expect that refractive index Nd4, material Abbe constant Vd4 meet：2<f4/f<10,1.75<Nd4<1.95 15<Vd4<40.
8. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that focal length f5, the material of the 5th lens
Expect that refractive index Nd5, material Abbe constant Vd5 meet：2<f5/f<10,1.45<Nd5<1.65 30<Vd5<70, wherein, f is whole
The focal length of individual optical system.
9. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that focal length f6, the material of the 6th lens
Expect that refractive index Nd6, material Abbe constant Vd6 meet：1.5<f6/f<5,1.55<Nd6<1.75 40<Vd6<60, wherein, f is whole
The focal length of individual optical system.
10. high pixel ultra wide-angle imaging module according to claim 1, it is characterised in that focal length f7, the material of the 7th lens
Expect that refractive index Nd7, material Abbe constant Vd7 meet：-5<f7/f<- 1.5,1.75<Nd7<1.95 15<Vd7<40, wherein, f is
The focal length of whole optical system.
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| CN111880293A (en) * | 2020-06-20 | 2020-11-03 | 广东弘景光电科技股份有限公司 | Super wide angle super high pixel module of making a video recording |
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| CN113031202A (en) * | 2019-12-09 | 2021-06-25 | 信泰光学(深圳)有限公司 | Wide-angle lens |
| CN114280756A (en) * | 2020-09-28 | 2022-04-05 | 宁波舜宇车载光学技术有限公司 | Optical lens and electronic device |
| TWI774408B (en) * | 2021-06-03 | 2022-08-11 | 大陸商信泰光學（深圳）有限公司 | Wide-angle lens assembly |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108535847A (en) * | 2018-06-29 | 2018-09-14 | 广东弘景光电科技股份有限公司 | The high pixel fish eye optical systems of ultra-wide angle and its camera module of application |
| CN108535847B (en) * | 2018-06-29 | 2023-06-16 | 广东弘景光电科技股份有限公司 | Super wide angle high pixel fisheye optical system and camera module of using thereof |
| CN108761745A (en) * | 2018-07-25 | 2018-11-06 | 广东弘景光电科技股份有限公司 | Wide-angle optics and its camera module of application |
| CN108761745B (en) * | 2018-07-25 | 2023-06-16 | 广东弘景光电科技股份有限公司 | Wide-angle optical system and camera module using same |
| CN110161655A (en) * | 2019-05-28 | 2019-08-23 | 广东弘景光电科技股份有限公司 | Wide-angle day and night camera module of the confocal type without thermalization optical system and its application |
| WO2021031585A1 (en) * | 2019-08-20 | 2021-02-25 | 江西联创电子有限公司 | Optical imaging lens and imaging device |
| CN113031202A (en) * | 2019-12-09 | 2021-06-25 | 信泰光学(深圳)有限公司 | Wide-angle lens |
| CN111880293A (en) * | 2020-06-20 | 2020-11-03 | 广东弘景光电科技股份有限公司 | Super wide angle super high pixel module of making a video recording |
| CN114280756A (en) * | 2020-09-28 | 2022-04-05 | 宁波舜宇车载光学技术有限公司 | Optical lens and electronic device |
| CN114280756B (en) * | 2020-09-28 | 2024-01-26 | 宁波舜宇车载光学技术有限公司 | Optical lens and electronic device |
| TWI774408B (en) * | 2021-06-03 | 2022-08-11 | 大陸商信泰光學（深圳）有限公司 | Wide-angle lens assembly |
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