CN107121758A - High pixel ultra-wide angle optical system and its camera module of application - Google Patents
High pixel ultra-wide angle optical system and its camera module of application Download PDFInfo
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- CN107121758A CN107121758A CN201710516158.8A CN201710516158A CN107121758A CN 107121758 A CN107121758 A CN 107121758A CN 201710516158 A CN201710516158 A CN 201710516158A CN 107121758 A CN107121758 A CN 107121758A
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- lens
- optical system
- focal length
- high pixel
- wide angle
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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
-
- 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
-
- 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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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The embodiment of the invention discloses high pixel ultra-wide angle optical system, 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 and the 5th lens；First lens, the object plane side of the second lens are convex surface, and image planes side is concave surface, and focal power is negative；3rd lens, the object plane side of the 4th lens are 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 convex surface, and its focal power is negative；Wherein, the 4th lens and the 5th lens are mutually glued forms compound lens, and the focal length f45 of compound lens meets following condition：2<f45<10, and meet TTL/EFL≤16.5.On the other hand, the embodiment of the present invention additionally provides a kind of camera module.The embodiment of the present invention, is made up of 5 pieces of lens, and lens piece number is few, simple in construction；The total length of optics, small volume；With superperformances such as large aperture, big visual angle, high pixel and extraordinary athermals.
Description
Technical field：
The present invention relates to a kind of optical system and its camera lens of application, especially a kind of high pixel ultra-wide angle optical system and
Its camera module applied.
Background technology：
With the application and the exploitation of panoramic parking system of full shot camera technique, in the market occurs in that one
Serial bugeye lens product：A kind of fish eye optical camera lens, but the mirror are mentioned in patent application such as publication number CN106019540A
Head employs 6 pieces of eyeglasses, there is that number of lenses is more, the high defect of cost.
The content of the invention：
For overcome existing optical system or camera lens to there is number of lenses many, the problem of cost is high, the side of the embodiment of the present invention one
Face provides a kind of high pixel ultra-wide angle optical system.
High pixel ultra-wide angle optical system, is sequentially provided with along optical axis from object plane to image planes：First lens, the second lens,
Three lens, the 4th lens and the 5th 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 convex 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 convex surface, and its focal power is negative；
Wherein, the 4th lens and the 5th lens are mutually glued forms compound lens, and the focal length f45 of compound lens meets as follows
Condition：2<f45<10, and TTL/EFL≤16.5 are met, wherein TTL is extremely imaged for the first lens object plane side summit of optical system
The distance between face, EFL is the effective focal length of optical system.
On the other hand, the embodiment of the present invention additionally provides a kind of camera module.
Camera module, at least including optical lens, is provided with high pixel ultra-wide angle optics described above in optical lens
System.
The embodiment of the present invention, is mainly made up of 5 pieces of lens, and lens piece number is few, simple in construction；The total length of optics, small volume；
It is mutually combined and reasonable distribution focal power, with large aperture, big visual angle, high pixel and extraordinary is disappeared using different lens
The superperformances such as heat differential.
Brief description of the drawings：
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes 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 optical system of the present invention or the structural representation of camera lens；
Fig. 2 is the distortion curve figure at the optical system of the present invention or+25 DEG C of camera lens；
Fig. 3 is the MTF curve figure at the optical system of the present invention or+25 DEG C of camera lens；
Fig. 4 is the relative illumination figure at the optical system of the present invention or+25 DEG C of camera lens；
Fig. 5 is the MTF curve figure at the optical system of the present invention or -40 DEG C of camera lens；
Fig. 6 is the MTF curve figure at the optical system of the present invention or+85 DEG C of camera lens.
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, the high pixel ultra-wide angle optical system of the present embodiment, 7 it is sequentially provided with from object plane to image planes along optical axis：
First lens 1, the second lens 2, the 3rd lens 3, the 4th lens 4 and the 5th lens 5.
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 convex surface, and image planes side is convex 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 convex surface, and its focal power is negative；
Wherein, the 4th lens 4 and the 5th lens 5 are mutually glued forms compound lens, and the focal length f45 of compound lens is met such as
Lower condition：2<f45<10, and meet TTL/EFL≤16.5, wherein TTL for optical system the object plane side summit of the first lens 1 extremely
The distance between imaging surface 7, EFL is the effective focal length of optical system.
The embodiment of the present invention, is mainly made up of 5 pieces of lens, and lens piece number is few, simple in construction；The total length of optics, small volume；
It is mutually combined and reasonable distribution focal power, with large aperture, big visual angle, high pixel and extraordinary is disappeared using different lens
The superperformances such as heat differential.
Further, each lens of the optical system meet following condition：
(1)-8.5<f1/f<-3.5；
(2)-5.5<f2/f<-1.5；
(3)3.0<f3/f<10.0；
(4)0.8<f4/f<3.0；
(5)-5.5<f5/f<-1.5；
Wherein, f is the focal length of whole optical system, and it takes the effective focal length EFL values of optical system, and f1 is the first lens
Focal length, 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 the 4th lens, and f5 is the 5th lens
Focal length.By being mutually combined and its reasonable distribution focal power for different lens, make optical system that there is large aperture, big visual angle, height
The superperformance such as pixel and extraordinary athermal.
Yet further, each lens of the optical system meet following condition：
(1)-10<f1<-3；
(2)-5<f2<-1；
(3)2<f3<10；
(4)0.8<f4<4.5；
(5)-8<f5<-1；
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 is the focal length of the 5th lens 5.By being mutually combined and its reasonable distribution focal power for different lens,
Make optical system that there is the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
Further, second lens 2, the 4th lens 4 and the 5th lens 5 are plastic aspheric lens.Can
Effectively to eliminate influence of the spherical aberration to lens performance, the parsing power of optical lens is improved, the heat that disappears can be effectively realized
Difference, while reducing the difficulty of processing and production cost of camera lens.
Specifically, the Refractive Index of Material Nd1 of the first lens 1, material Abbe constant Vd1 are met：1.72<Nd1<1.95,40<
Vd1<60.It is simple in construction, it is ensured that good optical property.
More specifically, the Refractive Index of Material Nd2 of the second lens 2, material Abbe constant Vd2 are met：1.45<Nd2<1.65,
40<Vd2<60.It is simple in construction, it is ensured that good optical property.
Again specifically, the Refractive Index of Material Nd3 of the 3rd lens 3, material Abbe constant Vd3 are met：1.75<Nd3<1.95,
15<Vd3<35.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 are met：1.45<Nd4<1.65,
40<Vd4<60.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 are met：1.55<Nd5<
1.65,20<Vd5<40.It is simple in construction, it is ensured that good optical property.
Yet further, the diaphragm 6 of optical system is located between the 3rd lens 3 and the 4th lens 4.For adjusting light beam
Intensity.Preferably, diaphragm 6 is arranged on the 4th lens 4 close to image side, and in the present embodiment, the position of each lens and diaphragm 6 is
Fixed.
Further, bandpass filter is provided between the 5th lens 5 and image planes 7.It may filter that infrared in environment
Light, to avoid image from producing red aeration phenomenon.
Specifically, in the present embodiment, the focal length f of this optical system is 0.817mm, and stop index F No. are 2.0, depending on
ω=203 ° of rink corner 2, the focal length f1=-5.125mm of the first lens 1, the focal length f2=-2.151mm of the second lens 2, the 3rd is saturating
The focal length f3=33.781mm, the focal length f4=1.361mm of the 4th lens 4, the focal length f5=-3.096mm of the 5th lens 5 of mirror 3.
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；STO is the position of diaphragm 6；S8, S9 couple
It should be two surfaces of the 4th lens 4；S9, S10 correspond to two surfaces of the 5th lens 5；S11, S12 correspond to be located at the 5th
Two surfaces of the bandpass filter between lens 5 and image planes 7；IMA is image planes 7.
More specifically, the second lens L2, the 4th lens L4 and the 5th lens L5 surface are aspherical shape,
It meets below equation： Wherein,
Curvature corresponding to parameter c=1/R, as radius, y is radial coordinate, and its unit is identical with length of lens unit, and k is circular cone
Whose conic coefficient, a1To a5Coefficient corresponding to respectively each radial coordinate.The S3 surfaces of the second lens L2 and S4 tables
The aspherical correlation values on the S9 surfaces and S10 surfaces in face, the 4th lens L4 S8 surfaces and S9 surfaces and the 5th lens L5
It is as shown in the table：
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.
Camera module, at least including optical lens, is provided with high pixel ultra-wide angle optics described above in optical lens
System.
This optical system and its camera module of application, are realized using different lens combinations and reasonable distribution focal power
The superperformances such as large aperture, big visual angle, high pixel.
It is to combine one or more embodiments that particular content is provided 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 optical system, is sequentially provided with along optical axis from object plane to image planes：First lens, the second lens, the 3rd
Lens, the 4th lens and the 5th 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 convex 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 convex surface, and its focal power is negative；
Wherein, the 4th lens and the 5th lens are mutually glued forms compound lens, and the focal length f45 of compound lens meets following bar
Part：2<f45<10, and meet TTL/EFL≤16.5, wherein TTL for optical system the first lens object plane side summit to imaging surface
The distance between, EFL is the effective focal length of optical system.
2. high pixel ultra-wide angle optical system according to claim 1, it is characterised in that each lens of the optical system are expired
The following condition of foot：
(1)-8.5<f1/f<-3.5；
(2)-5.5<f2/f<-1.5；
(3)3.0<f3/f<10.0；
(4)0.8<f4/f<3.0；
(5)-5.5<f5/f<-1.5；
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 is the focal length of the 4th lens, and f5 is the focal length of the 5th lens.
3. high pixel ultra-wide angle optical system according to claim 1, it is characterised in that each lens of the optical system are expired
The following condition of foot：
(1)-10<f1<-3；
(2)-5<f2<-1；
(3)2<f3<10；
(4)0.8<f4<4.5；
(5)-8<f5<-1；
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 is the focal length of the 5th lens.
4. the high pixel ultra-wide angle optical system according to claim 1,2 or 3, it is characterised in that second lens,
Four lens and the 5th lens are non-spherical lens.
5. the high pixel ultra-wide angle optical system according to claim 1,2 or 3, it is characterised in that the material of the first lens
Refractive index Nd1, material Abbe constant Vd1 are met：1.72<Nd1<1.95,40<Vd1<60.
6. the high pixel ultra-wide angle optical system according to claim 1,2 or 3, it is characterised in that the material of the second lens
Refractive index Nd2, material Abbe constant Vd2 are met：1.45<Nd2<1.65,40<Vd2<60.
7. the high pixel ultra-wide angle optical system according to claim 1,2 or 3, it is characterised in that the material of the 3rd lens
Refractive index Nd3, material Abbe constant Vd3 are met：1.75<Nd3<1.95,15<Vd3<35.
8. the high pixel ultra-wide angle optical system according to claim 1,2 or 3, it is characterised in that the material of the 4th lens
Refractive index Nd4, material Abbe constant Vd4 are met：1.45<Nd4<1.65,40<Vd4<60.
9. the high pixel ultra-wide angle optical system according to claim 1,2 or 3, it is characterised in that the material of the 5th lens
Refractive index Nd5, material Abbe constant Vd5 are met：1.55<Nd5<1.65,20<Vd5<40.
10. camera module, at least including optical lens, it is characterised in that any one of claim 1-9 is provided with optical lens
Described high pixel ultra-wide angle optical system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516158.8A CN107121758B (en) | 2017-06-29 | 2017-06-29 | High-pixel ultra-wide-angle optical system and camera module applying same |
| PCT/CN2017/116810 WO2019000860A1 (en) | 2017-06-29 | 2017-12-18 | High-pixel ultra-wide angle optical system and camera module applied thereto |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710516158.8A CN107121758B (en) | 2017-06-29 | 2017-06-29 | High-pixel ultra-wide-angle optical system and camera module applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107121758A true CN107121758A (en) | 2017-09-01 |
| CN107121758B CN107121758B (en) | 2020-12-25 |
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| CN201710516158.8A Active CN107121758B (en) | 2017-06-29 | 2017-06-29 | High-pixel ultra-wide-angle optical system and camera module applying same |
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| CN (1) | CN107121758B (en) |
| WO (1) | WO2019000860A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019000860A1 (en) * | 2017-06-29 | 2019-01-03 | 广东弘景光电科技股份有限公司 | High-pixel ultra-wide angle optical system and camera module applied thereto |
| CN109975960A (en) * | 2019-04-25 | 2019-07-05 | 协益电子（苏州）有限公司 | One kind looking around wide-angle without thermalization camera lens and automobile panoramic round-looking system |
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| CN101339288A (en) * | 2007-07-05 | 2009-01-07 | 富士能株式会社 | Imaging lens and imaging device |
| CN201222114Y (en) * | 2007-12-05 | 2009-04-15 | 创研光电股份有限公司 | Five-lens type optical image-fetching lens |
| CN201278039Y (en) * | 2008-03-11 | 2009-07-22 | 富士能株式会社 | Photographic lens and photographic device using the lens |
| CN104793321A (en) * | 2015-04-09 | 2015-07-22 | 上海大学 | Super-large field-of-view fish eye lens |
| CN206920689U (en) * | 2017-06-29 | 2018-01-23 | 广东弘景光电科技股份有限公司 | High pixel ultra-wide angle optical system and its camera module of application |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107121758B (en) * | 2017-06-29 | 2020-12-25 | 广东弘景光电科技股份有限公司 | High-pixel ultra-wide-angle optical system and camera module applying same |
-
2017
- 2017-06-29 CN CN201710516158.8A patent/CN107121758B/en active Active
- 2017-12-18 WO PCT/CN2017/116810 patent/WO2019000860A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339288A (en) * | 2007-07-05 | 2009-01-07 | 富士能株式会社 | Imaging lens and imaging device |
| CN201222114Y (en) * | 2007-12-05 | 2009-04-15 | 创研光电股份有限公司 | Five-lens type optical image-fetching lens |
| CN201278039Y (en) * | 2008-03-11 | 2009-07-22 | 富士能株式会社 | Photographic lens and photographic device using the lens |
| CN104793321A (en) * | 2015-04-09 | 2015-07-22 | 上海大学 | Super-large field-of-view fish eye lens |
| CN206920689U (en) * | 2017-06-29 | 2018-01-23 | 广东弘景光电科技股份有限公司 | High pixel ultra-wide angle optical system and its camera module of application |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019000860A1 (en) * | 2017-06-29 | 2019-01-03 | 广东弘景光电科技股份有限公司 | High-pixel ultra-wide angle optical system and camera module applied thereto |
| CN109975960A (en) * | 2019-04-25 | 2019-07-05 | 协益电子（苏州）有限公司 | One kind looking around wide-angle without thermalization camera lens and automobile panoramic round-looking system |
| CN109975960B (en) * | 2019-04-25 | 2024-05-31 | 协益电子（苏州）有限公司 | Around wide-angle athermalized lens and automobile panoramic around system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019000860A1 (en) | 2019-01-03 |
| CN107121758B (en) | 2020-12-25 |
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