CN108319004A - 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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- CN108319004A CN108319004A CN201810255730.4A CN201810255730A CN108319004A CN 108319004 A CN108319004 A CN 108319004A CN 201810255730 A CN201810255730 A CN 201810255730A CN 108319004 A CN108319004 A CN 108319004A
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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
- G02B13/001—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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Abstract
The embodiment of the invention discloses a kind of high pixel ultra-wide angle optical systems, include successively from object plane to image planes along optical axis：First lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens；The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；The third lens are biconvex lens, and focal power is just；The object plane side of 4th lens is concave surface, and image planes side is convex surface, and focal power is just；5th lens are biconvex lens, and focal power is just；6th lens are biconvex lens, and focal power is just；The object plane side of 7th lens is concave surface, and image planes side is convex surface, and focal power is negative；8th lens are biconvex lens, and focal power is just.On the other hand, the embodiment of the present invention additionally provides a kind of camera module.The embodiment of the present invention has 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 optical system and its camera module of application, especially a kind of high pixel ultra-wide angle optical system
System and its camera module of application.
Background technology：
With the development of science and technology, the application of bugeye lens is also more and more extensive.In automotive electronics application aspect, surpass
Wide-angle lens is because of its super large visual angle, it is observed that broader spatial dimension, being conducive to that auxiliary drives and panorama is parked etc. answers
With.And the problem that existing bugeye lens generally existing is complicated, pixel is low, of high cost.
Invention content：
To overcome the problems, such as that existing bugeye lens generally existing is complicated, an embodiment of the present invention provides a kind of high pictures
Plain ultra-wide angle optical system.
A kind of high pixel ultra-wide angle optical system includes successively from object plane to image planes along optical axis：First lens, second are thoroughly
Mirror, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens；
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；
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 the third lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 4th lens is concave surface, and image planes side is convex surface, and focal power is just；
The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 7th lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and focal power is just.
On the other hand, the embodiment of the present invention additionally provides a kind of camera module.
A kind of camera module includes at least optical lens, high pixel ultra-wide angle described above is equipped in optical lens
Optical system.
The optical system and camera module of the embodiment of the present invention are mainly made of 8 pieces of lens, simple in structure；Using difference
Lens are combined with each other and reasonable distribution focal power, have large aperture, big visual angle, high pixel and extraordinary athermal etc. good
Good performance.
Description of the drawings：
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the optical system of the present invention or the structural schematic diagram 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.
Specific implementation mode：
In order to make the technical problems, technical solutions and beneficial effects solved by the present invention be more clearly understood, below in conjunction with
Accompanying drawings and embodiments, 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.
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable
The meaning of sequence, it should be understood that only play differentiation and be used.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Figure 1, an embodiment of the present invention provides a kind of high pixel ultra-wide angle optical systems, along optical axis from object plane to picture
Face 10 includes successively：First lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5, the 6th lens the 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 focal power is negative；
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 the third lens 3 is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 4th lens 4 is concave surface, and image planes side is convex surface, and focal power is just；
The object plane side of 5th lens 5 is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 7th lens 7 is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 8th lens 8 is convex surface, and image planes side is convex surface, and focal power is just.
The optical system of the embodiment of the present invention is mainly made of 8 pieces of lens, simple in structure；Using different lens mutually group
Conjunction and reasonable distribution focal power have the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
Further, non-limiting as a kind of specific implementation mode, the 6th lens 6 and the mutually glued shape of the 7th lens 7
At compound lens, and meet TTL/EFL≤13.65, wherein TTL is that the 1 object plane side vertex of the first lens of optical system is extremely imaged
The distance between face 10, EFL are the effective focal length of optical system.It is simple in structure, have large aperture, big visual angle, high pixel and
The superperformances such as extraordinary athermal.
Still further, non-limiting as a kind of specific implementation mode, the 6th lens 6 and the 7th lens 7 form combination
The focal length f67 of lens meets following condition：30<f67<200.It is simple in structure, it is ensured that good optical property.
Further, illustratively, in the present embodiment, each lens of the optical system meet following condition：
(1)-15<f1<-5；
(2)-5<f2<-2；
(3)5<f3<10；
(4)30<f4<100；
(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 third 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.It is simple in structure, have large aperture, big visual angle, high pixel and extraordinary athermal etc. good
Good performance.
Further, non-limiting as a kind of preferred embodiment, each lens of the optical system meet following item
Part：
(1)-12<f1/f<-2；
(2)-5<f2/f<-1.5；
(3)2<f3/f<10；
(4)20<f4/f<100；
(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 entire optical system, and f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2, f3
For the focal length of the third 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 the coke 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.It is simple in structure, have large aperture, big visual angle, high pixel,
And the superperformances such as extraordinary athermal.
Still further, non-limiting, Refractive Index of Material Nd1, the material of the first lens 1 as a kind of specific implementation mode
Abbe constant Vd1 meets：1.72<Nd1<1.95 40<Vd1<60.It is simple in structure, it is ensured that good optical property.
Further, non-limiting, Refractive Index of Material Nd2, the material of the second lens 2 as a kind of specific implementation mode
Abbe constant Vd2 meets：1.45<Nd2<1.65 40<Vd2<60.It is simple in structure, it is ensured that good optical property.
Further, non-limiting, Refractive Index of Material Nd3, the material of the third lens 3 as a kind of specific implementation mode
Abbe constant Vd3 meets：1.55<Nd3<1.75 15<Vd3<35.It is simple in structure, it is ensured that good optical property.
Still further, non-limiting, Refractive Index of Material Nd4, the material of the 4th lens 4 as a kind of specific implementation mode
Abbe constant Vd4 meets：1.75<Nd4<1.95 15<Vd4<50.It is simple in structure, it is ensured that good optical property.
Further, non-limiting, Refractive Index of Material Nd5, the material of the 5th lens 5 as a kind of specific implementation mode
Abbe constant Vd5 meets：1.45<Nd5<1.65 50<Vd5<85.It is simple in structure, it is ensured that good optical property.
Further, non-limiting, Refractive Index of Material Nd6, the material of the 6th lens 6 as a kind of specific implementation mode
Abbe constant Vd6 meets：1.55<Nd6<1.75 40<Vd6<70.It is simple in structure, it is ensured that good optical property.
Still further, non-limiting, Refractive Index of Material Nd7, the material of the 7th lens 7 as a kind of specific implementation mode
Abbe constant Vd7 meets：1.75<Nd7<2.05 15<Vd7<40.It is simple in structure, it is ensured that good optical property.
Further, non-limiting, Refractive Index of Material Nd8, the material of the 8th lens 8 as a kind of specific implementation mode
Abbe constant Vd8 meets：1.45<Nd8<1.65 40<Vd8<60.It is simple in structure, it is ensured that good optical property.
Further, in the present embodiment, the diaphragm 9 of optical system is between the 4th lens 4 and the 5th lens 5.Knot
Structure is simple, for adjusting the intensity of light beam.Preferably, diaphragm 9 is arranged in the 4th lens 4 close to image side, in the present embodiment,
The position of each lens and diaphragm is fixed.
Still further, as a kind of preferred embodiment, bandpass filter is equipped between the 8th lens 8 and image planes 10.
It may filter that the infrared light in environment, red aeration phenomenon generated to avoid image.
Further, as a kind of preferred embodiment, the second lens 2, the third lens 3 and the 8th lens 8 are
Non-spherical lens.Influence of the spherical aberration to lens performance can be effectively eliminated, the parsing power of optical lens, Ke Yiyou are improved
Athermal is realized on effect ground, while reducing the difficulty of processing and production cost of camera lens.
Specifically, in the present embodiment, the focal length f of this optical system is 1.32mm, and stop index F No. are 2.0, visual field
2 ω=200 ° of angle, the focal length f1=-9.12mm of the first lens L1, the focal length f2=-3.01mm of the second lens L2, the third lens
The focal length f3=6.63mm, the focal length f4=62.97mm of the 4th lens L4, the focal length f5=5.88mm of the 5th lens L5, the of L3
The focal length f6=3.32mm, the focal length f7=-3.29mm of the 7th lens L7, the focal length f8=of the 8th lens L8 of six lens L6
6.10mm.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 third 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
A 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 third lens 3 and the 8th lens 8 is aspherical shape, expire
Sufficient following equation：+a5y10；Wherein, parameter c
=1/R, the as curvature corresponding to radius, y are radial coordinate, and unit is identical with length of lens unit, and k is the secondary song of circular cone
Linear system number, a1To a5Coefficient corresponding to respectively each radial coordinate.The surfaces S3 and the surfaces S4 of second lens 2, third are saturating
The aspherical correlation values on the surfaces S5 of mirror 3 and the surfaces S15 and the surfaces S16 of the surfaces S6 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.
A kind of camera module includes at least optical lens, high pixel ultra-wide angle described above is equipped in optical lens
Optical system.
The camera module of the embodiment of the present invention is mainly made of 8 pieces of lens, simple in structure；Using different lens mutually group
Conjunction and reasonable distribution focal power have the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
It is as described above the one or more embodiments for combining particular content to provide, does not assert the specific reality of the present invention
It applies and is 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
Several technology deduction or replace are made, protection scope of the present invention is all should be considered as.
Claims (10)
1. a kind of high pixel ultra-wide angle optical system includes successively from object plane to image planes along optical axis：First lens, the second lens,
The third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th 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 negative；
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 the third lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 4th lens is concave surface, and image planes side is convex surface, and focal power is just；
The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is just；
The object plane side of 7th lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and focal power is just.
2. high pixel ultra-wide angle optical system as described in claim 1, which is characterized in that the 6th lens and the 7th lens are mutual
Gluing forms compound lens, and meets TTL/EFL≤13.65, wherein TTL be the first lens object plane side vertex of optical system extremely
The distance between imaging surface, EFL are the effective focal length of optical system.
3. high pixel ultra-wide angle optical system as claimed in claim 2, which is characterized in that the 6th lens and the 7th lens forming
The focal length f67 of compound lens meets following condition：30<f67<200.
4. high pixel ultra-wide angle optical system as described in claim 1, which is characterized in that each lens of the optical system meet
Following condition：
(1)-15<f1<-5；
(2)-5<f2<-2；
(3)5<f3<10；
(4)30<f4<100；
(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 third 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.
5. high pixel ultra-wide angle optical system as described in claim 1, which is characterized in that each lens of the optical system meet
Following condition：
(1)-12<f1/f<-2；
(2)-5<f2/f<-1.5；
(3)2<f3/f<10；
(4)20<f4/f<100；
(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 entire 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 third
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.
6. high pixel ultra-wide angle optical system as described in claim 1, which is characterized in that the Refractive Index of Material of the first lens
Nd1, material Abbe constant Vd1 meet：1.72<Nd1<1.95 40<Vd1<60.
7. high pixel ultra-wide angle optical system as described in claim 1, which is characterized in that the Refractive Index of Material of the second lens
Nd2, material Abbe constant Vd2 meet：1.45<Nd2<1.65 40<Vd2<60.
8. high pixel ultra-wide angle optical system as described in claim 1, which is characterized in that the Refractive Index of Material of the third lens
Nd3, material Abbe constant Vd3 meet：1.55<Nd3<1.75 15<Vd3<35.
9. high pixel ultra-wide angle optical system as described in claim 1, which is characterized in that the Refractive Index of Material of the 4th lens
Nd4, material Abbe constant Vd4 meet：1.75<Nd4<1.95 15<Vd4<50.
10. a kind of camera module includes at least optical lens, which is characterized in that be equipped with claim 1-9 in optical lens and appoint
High pixel ultra-wide angle optical system described in one.
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| CN201810255730.4A CN108319004B (en) | 2018-03-27 | 2018-03-27 | High-pixel ultra-wide angle optical system and camera module applying same |
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| CN201810255730.4A CN108319004B (en) | 2018-03-27 | 2018-03-27 | High-pixel ultra-wide angle optical system and camera module applying same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596860A (en) * | 2019-08-20 | 2019-12-20 | 江西联创电子有限公司 | High-pixel wide-angle lens and imaging device |
| CN111856729A (en) * | 2020-08-20 | 2020-10-30 | 江西特莱斯光学有限公司 | Wide-angle lens and camera device comprising same |
| WO2021189917A1 (en) * | 2020-03-25 | 2021-09-30 | 诚瑞光学(深圳)有限公司 | Camera lens |
| US11829005B2 (en) | 2019-08-20 | 2023-11-28 | Jiangxi Lianchuang Electronic Co., Ltd. | Wide-angle lens, imaging module and camera including eight lenses of −−+−++−+ refractive powers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167898A (en) * | 2017-06-29 | 2017-09-15 | 江西联创电子有限公司 | Fish eye lens |
| CN208156289U (en) * | 2018-03-27 | 2018-11-27 | 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 |
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2018
- 2018-03-27 CN CN201810255730.4A patent/CN108319004B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167898A (en) * | 2017-06-29 | 2017-09-15 | 江西联创电子有限公司 | Fish eye lens |
| CN208156289U (en) * | 2018-03-27 | 2018-11-27 | 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596860A (en) * | 2019-08-20 | 2019-12-20 | 江西联创电子有限公司 | High-pixel wide-angle lens and imaging device |
| CN110596860B (en) * | 2019-08-20 | 2021-06-25 | 江西联创电子有限公司 | High-pixel wide-angle lens and imaging device |
| US11829005B2 (en) | 2019-08-20 | 2023-11-28 | Jiangxi Lianchuang Electronic Co., Ltd. | Wide-angle lens, imaging module and camera including eight lenses of −−+−++−+ refractive powers |
| WO2021189917A1 (en) * | 2020-03-25 | 2021-09-30 | 诚瑞光学(深圳)有限公司 | Camera lens |
| CN111856729A (en) * | 2020-08-20 | 2020-10-30 | 江西特莱斯光学有限公司 | Wide-angle lens and camera device comprising same |
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|---|---|
| CN108319004B (en) | 2023-08-22 |
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