CN109581634A - High-pixel wide-angle day and night confocal optical system and its camera module of application - Google Patents
High-pixel wide-angle day and night confocal optical system and its camera module of application Download PDFInfo
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- G—PHYSICS
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Abstract
The embodiment of the invention discloses a kind of high-pixel wide-angle day and night confocal optical systems, successively include: the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens from object plane to image planes along optical axis；The object plane side of first lens is convex surface, and image planes side is concave surface；The object plane side of second lens is concave surface, and image planes side is convex surface；The object plane side of the third lens is convex surface；4th lens are biconcave lens；The image planes side of 5th lens is convex surface；6th lens are biconvex lens；The object plane side of 7th lens is concave surface, and image planes side is convex surface；8th lens are biconvex lens.On the other hand, the embodiment of the invention also provides a kind of camera modules.The optical system or camera module of the embodiment of the present invention are mainly made of 8 pieces of lens, and eyeglass piece number is reasonable, and structure is simple, have favorable optical performance.
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 wide-angle is day and night confocal
Optical system and its camera module of application.
Background technique:
With the development of science and technology, day and night confocal optical system or camera module can because of its big visual angle for high-pixel wide-angle
To observe broader spatial dimension, while day and night confocal characteristic can guarantee that it can have at daytime and night again
Work is imitated, thus is widely used in automotive field and auxiliary driving field.But it is there are eyeglass piece number is more, complicated to lack
It is weary.
Summary of the invention:
The problem of there are eyeglass piece number is more, and structure is complicated to overcome existing optical system or camera module, the present invention is implemented
On the one hand example provides a kind of high-pixel wide-angle day and night confocal optical system.
High-pixel wide-angle day and night confocal optical system, along optical axis successively include: from object plane to image planes the first lens, second 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 concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens is convex surface, and focal power is positive；
The object plane side of 4th lens is concave surface, and image planes side is concave surface, and focal power is negative；
The image planes side of 5th lens is convex surface, and focal power is positive；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive；
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 positive；
Wherein, optical system meets TTL/EFL≤5.40, and wherein TTL is the first lens object plane side vertex of optical system
The distance between to imaging surface, EFL is the effective focal length of optical system.
On the other hand, the embodiment of the invention also provides a kind of camera modules.
A kind of camera module includes at least optical lens, is equipped with high-pixel wide-angle day described above in optical lens
Night confocal optical system.
The optical system or camera module of the embodiment of the present invention are mainly made of 8 pieces of lens, and eyeglass piece number is reasonable, structure
Simply；It is combined with each other using different lens and reasonable distribution focal power, there is day and night confocal, big visual angle, high pixel and very
The superperformances such as good athermal.
Detailed description of the invention:
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, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram one of optical system of the invention or camera module embodiment；
Fig. 2 is the distortion curve at+25 DEG C of optical system of the invention or camera module embodiment；
Fig. 3 is the MTF curve figure at+25 DEG C of optical system of the invention or camera module embodiment；
Fig. 4 is the relative illumination figure at+25 DEG C of optical system of the invention or camera module embodiment；
Fig. 5 is the MTF curve figure at -40 DEG C of optical system of the invention or camera module embodiment；
Fig. 6 is the MTF curve figure at+85 DEG C of optical system of the invention or camera module embodiment；
Fig. 7 is the structural schematic diagram two of optical system of the invention or camera module embodiment；
Fig. 8 is the structural schematic diagram three of optical system of the invention or camera module embodiment；
Fig. 9 is the structural schematic diagram four of optical system of the invention or camera module embodiment；
Figure 10 is the structural schematic diagram five of optical system of the invention or camera module embodiment.
Specific embodiment:
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is 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.
As shown in Figure 1, present embodiments provide a kind of high-pixel wide-angle day and night confocal optical system, along optical axis from object plane to
Image planes 10 successively include: the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6,
Seven 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 concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens 3 is convex surface, and image planes side is plane, and focal power is positive；
The object plane side of 4th lens 4 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 5th lens 5 is plane, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive；
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 positive；
Wherein, optical system meets TTL/EFL≤5.40, and wherein TTL is the 1 object plane side vertex of the first lens of optical system
The distance between to imaging surface 10, EFL is the effective focal length of optical system.
The optical system of the embodiment of the present invention is mainly made of 8 pieces of lens, and eyeglass piece number is reasonable, and structure is simple；Using not
With lens intercombination and reasonable distribution focal power, there is day and night confocal, big visual angle, high pixel and extraordinary athermal
Etc. superperformances.
Further, non-limiting as another preferred embodiment of the invention, as shown in fig. 7,
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 concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens 3 is convex surface, and image planes side is concave surface, and focal power is positive；
The object plane side of 4th lens 4 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 5th lens 5 is plane, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive；
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 positive.
Still further, it is non-limiting as another preferred embodiment of the invention, as shown in figure 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 concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens 3 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 4th lens 4 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 5th lens 5 is plane, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive；
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 positive.
Still further, it is non-limiting as another preferred embodiment of the invention, as shown in figure 9,
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 concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens 3 is convex surface, and image planes side is plane, and focal power is positive；
The object plane side of 4th lens 4 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 5th lens 5 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive；
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 positive.
Further, non-limiting as another preferred embodiment of the invention, as shown in Figure 10,
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 concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens 3 is convex surface, and image planes side is plane, and focal power is positive；
The object plane side of 4th lens 4 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 5th lens 5 is concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive；
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 positive.
Further, non-limiting as a kind of preferred embodiment of the invention, each lens of this optical system meet
Following condition:
(1)-12<f1<-3；
(2)50<f2<150；
(3)5<f3<10；
(4)-10<f4<-3；
(5)5<f5<10；
(6)2<f6<10；
(7)-10<f7<-5；
(8)5<f8<20；
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.By the intercombination and its reasonable distribution focal power of different lens, there is optical system big
The superperformances such as aperture, big visual angle, high pixel and extraordinary athermal.
Still further, non-limiting as a kind of preferred embodiment of the invention, each lens of the optical system are full
The following condition of foot:
(1)-5<f1/f<-1；
(2)5<f2/f<50；
(3)1<f3/f<10；
(4)-10<f4/f<-1；
(5)1.5<f5/f<10；
(6)1.0<f6/f<7；
(7)-7<f7/f<-1.2；
(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.Pass through the intercombination and its reasonable distribution of different lens
Focal power makes optical system have the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
Further, non-limiting, the Refractive Index of Material of the first lens 1 as a kind of preferred embodiment of the invention
Nd1, material Abbe constant Vd1 meet: 1.67 < Nd1 < 1.95,40 < Vd1 < 60.Structure is simple, it is ensured that good optical
Energy.
Still further, non-limiting, the Refractive Index of Material of the second lens 2 as a kind of preferred embodiment of the invention
Nd2, material Abbe constant Vd2 meet: 1.70 < Nd2 < 1.95,17 < Vd2 < 45.Structure is simple, it is ensured that good optical
Energy.
Further, non-limiting, the Refractive Index of Material of the third lens 3 as a kind of preferred embodiment of the invention
Nd3, material Abbe constant Vd3 meet: 1.75 < Nd3 < 1.95,17 < Vd3 < 35.Structure is simple, it is ensured that good optical
Energy.
Further, non-limiting, the Refractive Index of Material of the 4th lens 4 as a kind of preferred embodiment of the invention
Nd4, material Abbe constant Vd4 meet: 1.45 < Nd4 < 1.75,15 < Vd4 < 50.Structure is simple, it is ensured that good optical
Energy.
Still further, non-limiting, the Refractive Index of Material of the 5th lens 5 as a kind of preferred embodiment of the invention
Nd5, material Abbe constant Vd5 meet: 1.45 < Nd5 < 1.75,45 < Vd5 < 70.Structure is simple, it is ensured that good optical
Energy.
Further, non-limiting, the Refractive Index of Material of the 6th lens 6 as a kind of preferred embodiment of the invention
Nd6, material Abbe constant Vd6 meet: 1.45 < Nd6 < 1.65,60 < Vd6 < 90.Structure is simple, it is ensured that good optical
Energy.
Further, non-limiting, the Refractive Index of Material of the 7th lens 7 as a kind of preferred embodiment of the invention
Nd7, material Abbe constant Vd7 meet: 1.75 < Nd7 < 2.05,15 < Vd7 < 40.Structure is simple, it is ensured that good optical
Energy.
Still further, non-limiting, the Refractive Index of Material of the 8th lens 8 as a kind of preferred embodiment of the invention
Nd8, material Abbe constant Vd8 meet: 1.45 < Nd8 < 1.65,50 < Vd8 < 90.Structure is simple, it is ensured that good optical
Energy.
Further, non-limiting, the 6th lens 6 and the 7th lens 7 as a kind of preferred embodiment of the invention
It is mutually glued to form compound lens.
Further, non-limiting as a kind of preferred embodiment of the invention, compound lens meets following condition:
10 < f67 < 50, wherein f67 is the focal length of compound lens.Structure is simple, it is ensured that good optical property.
Still further, non-limiting, 1 to the 8th lens 8 of the first lens as a kind of preferred embodiment of the invention
It is glass spherical lens.Structure is simple, it is ensured that good optical property.
Further, non-limiting as a kind of preferred embodiment of the invention, the diaphragm 9 of optical system is located at the
Between two lens 2 and the third lens 3.For adjusting the intensity of light beam.
Further, non-limiting as a kind of preferred embodiment of the invention, the 8th lens 8 and image planes 10
Between be equipped with double wave pass filter, allow visible light and specified infrared waves to pass through.
Specifically, in the present embodiment, the focal length f1=-5.22mm, the focal length f2=of the second lens 2 of the first lens 1
145.54mm, the focal length f3=8.18mm of the third lens 3, the focal length f4=-5.37mm of the 4th lens 4, the focal length of the 5th lens 5
F5=7.19mm, the focal length f6=5.65mm of the 6th lens 6, the focal length f7=-7.38mm of the 7th lens 7, the coke of the 8th lens 8
Away from f8=13.96mm.Every basic parameter of this optical system is as shown in the table:
In upper table, along optical axis 10 from object plane to image planes, S1, S2 correspond to two surfaces of the first lens 1；S3, S4 are corresponding
For two surfaces of the second lens 2；S5 is diaphragm STO；S6, S7 correspond to two surfaces of the third lens 3；S8, S9 are corresponded to
Two surfaces of the 4th lens 4；S10, S11 correspond to two surfaces of the 5th lens 5；S12, S13 correspond to the 6th lens 6
Two surfaces；S13, S14 correspond to two surfaces of the 7th lens 7；S15, S16 correspond to two surfaces of the 8th lens 8；
S17, S18 correspond to two surfaces of double wave pass filter；IMA is image planes 10.
In from Fig. 2 to Fig. 6 as can be seen that the present embodiment optical system have day and night confocal, big visual angle, high pixel, with
And the superperformances such as extraordinary athermal.
A kind of camera module includes at least optical lens, is equipped with high-pixel wide-angle day described above in optical lens
Night confocal optical system.
The camera module of the embodiment of the present invention is mainly made of 8 pieces of lens, and eyeglass piece number is reasonable, and structure is simple；Using not
With lens intercombination and reasonable distribution focal power, there is day and night confocal, big visual angle, high pixel and extraordinary athermal
Etc. superperformances.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert specific reality of the invention
It applies and is only limited to these instructions.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, all should be considered as protection scope of the present invention.
Claims (10)
1. high-pixel wide-angle day and night confocal optical system, along optical axis successively include: from object plane to image planes the first lens, second thoroughly
Mirror, 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 concave surface, and image planes side is convex surface, and focal power is positive；
The object plane side of the third lens is convex surface, and focal power is positive；
The object plane side of 4th lens is concave surface, and image planes side is concave surface, and focal power is negative；
The image planes side of 5th lens is convex surface, and focal power is positive；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive；
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 positive；
Wherein, optical system meets TTL/EFL≤5.40, wherein TTL be optical system the first lens object plane side vertex at
The distance between image planes, EFL are the effective focal length of optical system.
2. high-pixel wide-angle according to claim 1 day and night confocal optical system, which is characterized in that the optical system it is each
Lens meet following condition:
(1)-12<f1<-3；
(2)50<f2<150；
(3)5<f3<10；
(4)-10<f4<-3；
(5)5<f5<10；
(6)2<f6<10；
(7)-10<f7<-5；
(8)5<f8<20；
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.
3. high-pixel wide-angle according to claim 1 day and night confocal optical system, which is characterized in that the optical system it is each
Lens meet following condition:
(1)-5<f1/f<-1；
(2)5<f2/f<50；
(3)1<f3/f<10；
(4)-10<f4/f<-1；
(5)1.5<f5/f<10；
(6)1.0<f6/f<7；
(7)-7<f7/f<-1.2；
(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.
4. high-pixel wide-angle according to claim 1 or 2 or 3 day and night confocal optical system, which is characterized in that the first lens
Refractive Index of Material Nd1, material Abbe constant Vd1 meet: 1.67 < Nd1 < 1.95,40 < Vd1 < 60.
5. high-pixel wide-angle according to claim 1 or 2 or 3 day and night confocal optical system, which is characterized in that the second lens
Refractive Index of Material Nd2, material Abbe constant Vd2 meet: 1.70 < Nd2 < 1.95,17 < Vd2 < 45.
6. high-pixel wide-angle according to claim 1 or 2 or 3 day and night confocal optical system, which is characterized in that the third lens
Refractive Index of Material Nd3, material Abbe constant Vd3 meet: 1.75 < Nd3 < 1.95,17 < Vd3 < 35.
7. high-pixel wide-angle according to claim 1 or 2 or 3 day and night confocal optical system, which is characterized in that the 4th lens
Refractive Index of Material Nd4, material Abbe constant Vd4 meet: 1.45 < Nd4 < 1.75,15 < Vd4 < 50.
8. high-pixel wide-angle according to claim 1 or 2 or 3 day and night confocal optical system, which is characterized in that the 5th lens
Refractive Index of Material Nd5, material Abbe constant Vd5 meet: 1.45 < Nd5 < 1.75,45 < Vd5 < 70.
9. high-pixel wide-angle according to claim 1 or 2 or 3 day and night confocal optical system, which is characterized in that the 6th lens
Refractive Index of Material Nd6, material Abbe constant Vd6 meet: 1.45 < Nd6 < 1.65,60 < Vd6 < 90.
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
The day and night confocal optical system of high-pixel wide-angle described in one.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010508289.3A CN111796404B (en) | 2019-01-07 | 2019-01-07 | High-pixel wide-angle day and night confocal camera module |
| CN202010508313.3A CN111796405B (en) | 2019-01-07 | 2019-01-07 | High-pixel wide-angle day and night confocal optical system |
| CN201910010426.8A CN109581634B (en) | 2019-01-07 | 2019-01-07 | High-pixel wide-angle day and night confocal optical system and camera module applying same |
| PCT/CN2019/126536 WO2020143420A1 (en) | 2019-01-07 | 2019-12-19 | High-resolution, wide angle, day and night confocal optical system and camera module used by same |
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| CN201910010426.8A CN109581634B (en) | 2019-01-07 | 2019-01-07 | High-pixel wide-angle day and night confocal optical system and camera module applying same |
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| CN202010508289.3A Division CN111796404B (en) | 2019-01-07 | 2019-01-07 | High-pixel wide-angle day and night confocal camera module |
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| CN202010508313.3A Active CN111796405B (en) | 2019-01-07 | 2019-01-07 | High-pixel wide-angle day and night confocal optical system |
| CN202010508289.3A Active CN111796404B (en) | 2019-01-07 | 2019-01-07 | High-pixel wide-angle day and night confocal camera module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110531589A (en) * | 2019-08-16 | 2019-12-03 | 中山依瓦塔光学有限公司 | A kind of projection objective camera lens of litho machine |
| WO2020143420A1 (en) * | 2019-01-07 | 2020-07-16 | 广东弘景光电科技股份有限公司 | High-resolution, wide angle, day and night confocal optical system and camera module used by same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111796405B (en) | 2022-04-15 |
| CN111796404A (en) | 2020-10-20 |
| CN111796405A (en) | 2020-10-20 |
| CN111796404B (en) | 2022-04-15 |
| CN109581634B (en) | 2023-11-21 |
| WO2020143420A1 (en) | 2020-07-16 |
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