CN208421377U - High-pixel wide-angle infrared optical system and its camera module of application - Google Patents
High-pixel wide-angle infrared optical system and its camera module of application Download PDFInfo
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- CN208421377U CN208421377U CN201820791448.3U CN201820791448U CN208421377U CN 208421377 U CN208421377 U CN 208421377U CN 201820791448 U CN201820791448 U CN 201820791448U CN 208421377 U CN208421377 U CN 208421377U
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Abstract
The utility model embodiment discloses a kind of high-pixel wide-angle infrared optical system, successively includes: the first lens, the second lens, the third lens, the 4th lens and the 5th lens from object plane to image planes along optical axis；The image planes side of first lens 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 positive；The image planes 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 convex surface, and focal power is positive；The object plane side of 5th lens is convex surface, and image planes side is concave surface, and focal power is positive.On the other hand, the utility model embodiment additionally provides a kind of camera module.The optical system and camera module of the utility model embodiment are mainly made of 5 pieces of lens, and lens piece number is few, and structure is simple；Using the intercombination of different lens and reasonable distribution focal power, there are the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
Description
Technical field:
The utility model relates to a kind of optical system and its camera module of application, especially a kind of high-pixel wide-angle is infrared
Optical system and its camera module of application.
Background technique:
With the application of infrared imagery technique and the development of intelligent driving auxiliary system, infrared lens are more and more extensive
Ground is applied to automotive field.But the problem of that there are number of lenses is more for traditional infrared lens, and structure is complicated.
Summary of the invention:
More, at high cost problem that there are number of lenses to overcome traditional infrared camera lens, the utility model embodiment provide
A kind of high-pixel wide-angle infrared optical system.
A kind of high-pixel wide-angle infrared 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 and the 5th lens；
The image planes side of first lens 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 positive；
The image planes 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 convex surface, and focal power is positive；
The object plane side of 5th lens is convex surface, and image planes side is concave surface, and focal power is positive.
On the other hand, the utility model embodiment additionally provides a kind of camera module.
A kind of camera module, includes at least optical lens, and it is red to be equipped with high-pixel wide-angle described above in optical lens
Outer optical system.
The optical system and camera module of the utility model embodiment are mainly made of 5 pieces of lens, and lens piece number is few, knot
Structure is simple；It is combined with each other using different lens and reasonable distribution focal power, there is large aperture, big visual angle, high pixel and very
The superperformances such as good athermal.
Detailed description of the invention:
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the optical system of the utility model or the structural schematic diagram one of camera module；
Fig. 2 is the distortion curve at the optical system of the utility model or+25 DEG C of camera module；
Fig. 3 is the MTF curve figure at the optical system of the utility model or+25 DEG C of camera module；
Fig. 4 is the relative illumination figure at the optical system of the utility model or+25 DEG C of camera module；
Fig. 5 is the MTF curve figure at the optical system of the utility model or -40 DEG C of camera module；
Fig. 6 is the MTF curve figure at the optical system of the utility model or+85 DEG C of camera module；
Fig. 7 is the optical system of the utility model or the structural schematic diagram two of camera module；
Fig. 8 is the optical system of the utility model or the structural schematic diagram three of camera module；
Fig. 9 is the optical system of the utility model or the structural schematic diagram four of camera module；
Figure 10 is the optical system of the utility model or the structural schematic diagram five of camera module；
Figure 11 is the optical system of the utility model or the structural schematic diagram six of camera module；
Figure 12 is the optical system of the utility model or the structural schematic diagram seven of camera module；
Figure 13 is the optical system of the utility model or the structural schematic diagram eight of camera module；
Figure 14 is the optical system of the utility model or the structural schematic diagram nine of camera module.
Specific embodiment:
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example is only used to explain the utility model, is not used to limit the utility model.
When the utility model embodiment refers to the ordinal numbers such as " first ", " second ", unless based on context its certain table
Up to 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 " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
The utility model embodiment provides a kind of high-pixel wide-angle infrared optical system, along optical axis from object plane to image planes according to
Secondary includes: the first lens 1, the second lens 2, the third lens 3, the 4th lens 4 and the 5th lens 5.
The object plane side shape of first lens 1 is any, 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 positive；
The object plane side shape of the third lens 3 is any, 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 convex surface, and focal power is positive；
The object plane side of 5th lens 5 is convex surface, and image planes side is concave surface, and focal power is positive.
The optical system of the utility model embodiment is mainly made of 5 pieces of lens, and lens piece number is few, and structure is simple；Using
Different lens are combined with each other and reasonable distribution focal power, have large aperture, big visual angle, high pixel and extraordinary athermal
Etc. superperformances.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in Figure 1, first in the present embodiment
The object plane side of 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, image planes side
For concave surface, focal power is positive；The object plane side of the third lens 3 is plane, and image planes side is convex surface, and focal power is positive；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in fig. 7, first in the present embodiment
The object plane side of lens 1 is concave surface, and image planes side is concave surface, and focal power is negative；The object plane side of second lens 2 is convex surface, image planes side
For concave surface, focal power is positive；The object plane side of the third lens 3 is plane, and image planes side is convex surface, and focal power is positive；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in figure 8, first in the present embodiment
The object plane side of lens 1 is concave surface, and image planes side is concave surface, and focal power is negative；The object plane side of second lens 2 is convex surface, image planes side
For concave surface, focal power is positive；The object plane side of the third lens 3 is concave surface, and image planes side is convex surface, and focal power is positive；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in figure 9, first in the present embodiment
The object plane side of lens 1 is concave surface, and image planes side is concave surface, and focal power is negative；The object plane side of second lens 2 is convex surface, image planes side
For concave surface, 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；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in Figure 10, first in the present embodiment
The object plane side of lens 1 is plane, and image planes side is concave surface, and focal power is negative；The object plane side of second lens 2 is convex surface, image planes side
For concave surface, focal power is positive；The object plane side of the third lens 3 is plane, and image planes side is convex surface, and focal power is positive；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in figure 11, first in the present embodiment
The object plane side of lens 1 is plane, and image planes side is concave surface, and focal power is negative；The object plane side of second lens 2 is convex surface, image planes side
For concave surface, 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；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in figure 12, first in the present embodiment
The object plane side of lens 1 is plane, and image planes side is concave surface, and focal power is negative；The object plane side of second lens 2 is convex surface, image planes side
For concave surface, focal power is positive；The object plane side of the third lens 3 is concave surface, and image planes side is convex surface, and focal power is positive；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in figure 13, first in the present embodiment
The object plane side of 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, image planes side
For concave surface, 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；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Illustratively, non-limiting as the specific embodiment of this programme, as shown in figure 14, first in the present embodiment
The object plane side of 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, image planes side
For concave surface, focal power is positive；The object plane side of the third lens 3 is concave surface, and image planes side is convex surface, and focal power is positive；4th thoroughly
The object plane side of mirror 4 is concave surface, and image planes side is convex surface, and focal power is positive；The object plane side of 5th lens 5 is convex surface, and image planes side is
Concave surface, focal power are positive.
Further, non-limiting as the preferred embodiment of this programme, optical system meets: TTL/EFL≤2.5,
Wherein TTL is the 1 object plane side vertex of the first lens of optical system the distance between to imaging surface 7, and EFL is the effective of optical system
Focal length.It is combined with each other using different lens and reasonable distribution focal power, there is large aperture, big visual angle, high pixel and very good
The superperformances such as athermal.
Still further, non-limiting as the preferred embodiment of this programme, each lens of optical system meet as follows
Condition:
(1)-10<f1<-3；
(2)3<f2<10；
(3)2<f3<5；
(4)5<f4<20；
(5)50<f5<200；
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.By the intercombination and its reasonable distribution focal power of different lens,
Make optical system that there are the superperformances such as large aperture, big visual angle, high pixel and extraordinary athermal.
Further, non-limiting as the preferred embodiment of this programme, each lens of optical system meet as follows
Condition:
(1)-3.0<f1/f<-1.0；
(2)1.5<f2/f<5.0；
(3)0.5<f3/f<3.0；
(4)2.0<f4/f<10.0；
(5)10<f5/f<100；
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.Pass through the mutual of different lens
Combination and its reasonable distribution focal power make optical system have large aperture, big visual angle, high pixel and extraordinary athermal
Etc. superperformances.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd1 of the first lens 1,
Material Abbe constant Vd1 meets: 1.40 < Nd1 < 1.70,50 < Vd1 < 90.Structure is simple, it is ensured that good optical property.
Still further, as the preferred embodiment of this programme and it is non-limiting, the Refractive Index of Material Nd2 of the second lens 2,
Material Abbe constant Vd2 meets: 1.50 < Nd2 < 1.70,20 < Vd2 < 40.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd3 of the third lens 3,
Material Abbe constant Vd3 meets: 1.65 < Nd3 < 1.95,35 < Vd3 < 55.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the preferred embodiment of this programme, the Refractive Index of Material Nd4 of the 4th lens 4,
Material Abbe constant Vd4 meets: 1.45 < Nd4 < 1.65,40 < Vd4 < 60.Structure is simple, it is ensured that good optical property.
Still further, as the preferred embodiment of this programme and it is non-limiting, the Refractive Index of Material Nd5 of the 5th lens 5,
Material Abbe constant Vd5 meets: 1.45 < Nd5 < 1.65,40 < Vd5 < 60.Structure is simple, it is ensured that good optical property.
Further, non-limiting as the specific embodiment of this programme, the diaphragm 6 of optical system is located at second thoroughly
Between mirror 2 and the third lens 3.For adjusting the intensity of light beam, it is preferable that the setting of diaphragm 6 in the second lens 2 close to image side,
In the present embodiment, the position of each lens and diaphragm is fixed.
Further, non-limiting as the preferred embodiment of this programme, the second lens 2, the 4th lens 4 and
5th lens 5 are plastic aspheric lens.Influence of the spherical aberration to lens performance can be effectively eliminated, optical frames is improved
The parsing power of head, can effectively realize athermal, while reducing the difficulty of processing and production cost of camera lens.
Still further, as the preferred embodiment of this programme and it is non-limiting, be equipped between the 5th lens 5 and image planes 7
Bandpass filter.It may filter that the visible light in environment, to avoid visible light interference phenomenon.
Specifically, in conjunction with Fig. 1, in the present embodiment, the focal length f1=-4.258mm of the first lens 1, the coke of the second lens 2
Away from f2=5.991mm, the focal length f3=3.962mm of the third lens 3, the focal length f4=11.034mm of the 4th lens 4, the 5th lens
5 focal length f5=90.398mm.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；STO is diaphragm position；S6, S7 correspond to two surfaces of the third lens 3；S8, S9 couple
It should be two surfaces of the 4th lens 4；S10, S11 correspond to two surfaces of the 5th lens 5；S12, S13 correspond to band logical filter
Two surfaces of mating plate；IMA is image planes.
More specifically, the surface of second lens 2, the 4th lens 4, the 5th lens 5 be aspherical shape, meet with
Lower equation: Wherein,
Parameter c=1/R, as curvature corresponding to radius, y are radial coordinate, and 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 surface S3 and the surface S4 of second lens 2,
The surface S8 of 4th lens 4 and the aspherical correlation values such as following table institute on the surface S9, the surface S10 of the 5th lens 5 and the surface S11
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
The favorable optical performances such as performance.
A kind of camera module, includes at least optical lens, and it is red to be equipped with high-pixel wide-angle described above in optical lens
Outer optical system.
The optical system and camera module of the utility model embodiment are mainly made of 5 pieces of lens, and lens piece number is few, knot
Structure is simple；It is combined with each other using different lens and reasonable distribution focal power, there is large aperture, big visual angle, high pixel and very
The superperformances such as good athermal.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert the tool of the utility model
Body implementation is only limited to these instructions.It is all approximate with the method for the utility model, structure etc., identical or practical new for this
Several technology deduction or replace are made under type concept thereof, all should be considered as the protection scope of the utility model.
Claims (10)
1. a kind of high-pixel wide-angle infrared 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 and the 5th lens；It is characterized in that,
The image planes side of first lens 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 positive；
The image planes 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 convex surface, and focal power is positive；
The object plane side of 5th lens is convex surface, and image planes side is concave surface, and focal power is positive.
2. high-pixel wide-angle infrared optical system as described in claim 1, which is characterized in that optical system meets: TTL/EFL
≤ 2.5, wherein TTL is the first lens object plane side vertex of optical system the distance between to imaging surface, and EFL is optical system
Effective focal length.
3. high-pixel wide-angle infrared optical system as claimed in claim 1 or 2, which is characterized in that each lens of optical system
Meet following condition:
(1)-10<f1<-3；
(2)3<f2<10；
(3)2<f3<5；
(4)5<f4<20；
(5)50<f5<200；
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.
4. high-pixel wide-angle infrared optical system as claimed in claim 1 or 2, which is characterized in that each lens of optical system
Meet following condition:
(1)-3.0<f1/f<-1.0；
(2)1.5<f2/f<5.0；
(3)0.5<f3/f<3.0；
(4)2.0<f4/f<10.0；
(5)10<f5/f<100；
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.
5. high-pixel wide-angle infrared optical system as claimed in claim 1 or 2, which is characterized in that the material of the first lens is rolled over
Penetrate rate Nd1, material Abbe constant Vd1 satisfaction: 1.40 < Nd1 < 1.70,50 < Vd1 < 90.
6. high-pixel wide-angle infrared optical system as claimed in claim 1 or 2, which is characterized in that the material of the second lens is rolled over
Penetrate rate Nd2, material Abbe constant Vd2 satisfaction: 1.50 < Nd2 < 1.70,20 < Vd2 < 40.
7. high-pixel wide-angle infrared optical system as claimed in claim 1 or 2, which is characterized in that the material of the third lens is rolled over
Penetrate rate Nd3, material Abbe constant Vd3 satisfaction: 1.65 < Nd3 < 1.95,35 < Vd3 < 55.
8. high-pixel wide-angle infrared optical system as claimed in claim 1 or 2, which is characterized in that the material of the 4th lens is rolled over
Penetrate rate Nd4, material Abbe constant Vd4 satisfaction: 1.45 < Nd4 < 1.65,40 < Vd4 < 60.
9. high-pixel wide-angle infrared optical system as claimed in claim 1 or 2, which is characterized in that the material of the 5th lens is rolled over
Penetrate rate Nd5, material Abbe constant Vd5 satisfaction: 1.45 < Nd5 < 1.65,40 < Vd5 < 60.
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 wide-angle infrared optical system described in one.
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Cited By (1)
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| CN108445608A (en) * | 2018-05-25 | 2018-08-24 | 广东弘景光电科技股份有限公司 | High-pixel wide-angle infrared optical system and its camera module of application |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108445608A (en) * | 2018-05-25 | 2018-08-24 | 广东弘景光电科技股份有限公司 | High-pixel wide-angle infrared optical system and its camera module of application |
| CN108445608B (en) * | 2018-05-25 | 2023-08-22 | 广东弘景光电科技股份有限公司 | High-pixel wide-angle infrared optical system and camera module applying same |
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