CN209674092U - High pixel road monitoring optical system and its camera module of application - Google Patents
High pixel road monitoring optical system and its camera module of application Download PDFInfo
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- CN209674092U CN209674092U CN201920460124.6U CN201920460124U CN209674092U CN 209674092 U CN209674092 U CN 209674092U CN 201920460124 U CN201920460124 U CN 201920460124U CN 209674092 U CN209674092 U CN 209674092U
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Abstract
The utility model embodiment discloses a kind of high pixel road monitoring optical system, and the object plane side for along optical axis from object plane to image planes successively including: the first lens is convex surface, and image planes side is concave surface, and focal power is positive；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 positive；The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is negative；The image planes side of 5th lens is concave surface, and image planes side is concave surface, and focal power is negative；The object plane side of 6th lens is convex surface, and image planes side is convex 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 6 pieces of lens, and eyeglass piece number is reasonable, and structure is simple, and cost is relatively low；Using the intercombination of different lens and reasonable distribution focal power, there are the superperformances such as high pixel, big target surface.
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 road monitoring
Optical system and its camera module of application.
Background technique:
The existing optical system for driving field from dynamic auxiliary applied to road monitoring such as Car license recognition, automobile, but it exists
Eyeglass piece number is more, complicated shortage.
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 utility model
On the one hand embodiment provides a kind of high pixel road monitoring optical system.
A kind of high pixel road monitoring 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 and the 6th lens；
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is positive；
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 positive；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is negative；
The image planes side of 5th lens is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 6th lens is convex surface, and image planes side is convex 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 high pixel road prison described above is equipped in optical lens
Control optical system.
The optical system and camera module of the utility model embodiment are mainly made of 6 pieces of lens, and eyeglass piece number is reasonable,
Structure is simple, and cost is relatively low；Using the intercombination of different lens and reasonable distribution focal power, have high pixel, big target surface etc. good
Good performance.
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 of camera module embodiment；
Fig. 2 is the optical system of the utility model or the field curvature, distortion curve figure of camera module embodiment；
Fig. 3 is the optical system of the utility model or the chromaticity difference diagram of camera module embodiment；
Fig. 4 is the optical system of the utility model or the MTF curve figure of camera module embodiment.
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.
As shown in Figure 1, the utility model embodiment provides a kind of high pixel road monitoring optical system, along optical axis from object
Face to image planes 8 successively include: the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5 and the 6th
Lens 6.
The object plane side of first lens 1 is convex surface, and image planes side is concave surface, and focal power is positive；
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 positive；
The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and focal power is negative；
The image planes side of 5th lens 5 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive.
The optical system of the utility model embodiment is mainly made of 6 pieces of lens, and eyeglass piece number is reasonable, and structure is simple, at
This is lower；Using the intercombination of different lens and reasonable distribution focal power, there are the superperformances such as high pixel, big target surface.
Further, non-limiting, the 4th lens 4 and the 5th lens as a kind of preferred embodiment of the utility model
5 mutually glued formation compound lens, focal power are negative.Structure is simple, it is ensured that good optical property.
Still further, as the utility model a kind of preferred embodiment and non-limiting, the focal length f45 of compound lens
Meet: -0.43 < f/f45 < -0.22, wherein f is the focal length of entire optical system.Structure is simple, it is ensured that good optical
Energy.
Further, non-limiting as a kind of preferred embodiment of the utility model, the optical system it is each
Mirror meets following condition:
(1)0<f/f1<0.1；
(2)-0.82<f/f2<-0.65；
(3)0.65<f/f3<0.86；
(4)-0.43<f/f45<-0.22；
(5)0.58<f/f6<0.80；
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
The focal length of the third 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.Using
Different lens are combined with each other and reasonable distribution focal power, have the superperformances such as high pixel, big target surface.
Still further, as the utility model a kind of preferred embodiment and non-limiting, the focal length of the first lens 1
F1, Refractive Index of Material Nd1, material Abbe constant Vd1 meet: 0 < f/f1 < 0.1, Nd1 > 1.84, Vd1 < 24, wherein f is whole
The focal length of a optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting, the focal length of the second lens 2 as a kind of preferred embodiment of the utility model
F2, Refractive Index of Material Nd2, material Abbe constant Vd2 meet: -0.82 < f/f2 < -0.65, Nd2 < 1.56, Vd2 > 55, wherein
F is the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting, the focal length of the third lens 3 as a kind of preferred embodiment of the utility model
F3, Refractive Index of Material Nd3, material Abbe constant Vd3 meet: 0.65 < f/f3 < 0.86, Nd3 > 1.81, Vd3 < 47, wherein f
For the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Still further, the material folding of fourth lens 4 non-limiting as a kind of preferred embodiment of the utility model
Penetrate rate Nd4, material Abbe constant Vd4 satisfaction: Nd4 > 1.80, Vd4 < 47；And/or the 5th lens 5 Refractive Index of Material Nd5,
Material Abbe constant Vd5 meets: Nd5 < 1.76, Vd5 > 27.Structure is simple, it is ensured that good optical property.
Further, non-limiting, the focal length of the 6th lens 6 as a kind of preferred embodiment of the utility model
F6, Refractive Index of Material Nd6, material Abbe constant Vd6 meet: 0.58 < f/f6 < 0.80, Nd6 < 1.56, Vd6 > 55, wherein f
For the focal length of entire optical system.Structure is simple, it is ensured that good optical property.
Further, non-limiting as a kind of preferred embodiment of the utility model, aperture diaphragm 7 is located at third
Between lens 3 and the 4th lens 4, close to 4 side of the 4th lens.For adjusting the intensity of light beam.
Still further, non-limiting as a kind of preferred embodiment of the utility model, the second lens 2 and the 6th are thoroughly
Mirror 6 is plastic aspheric lenes.Structure is simple, it is ensured that good optical property.
Specifically, the optical system of the utility model embodiment matches 1/2 " sensor, focal length f=8.0mm, stop index
F/NO=2.0, DFOV=62 ° of field angle, optics overall length TTL=30.84mm, every basic parameter such as following table of this optical system
It is shown:
In upper table, along optical axis 8 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；STO is diaphragm；S8, S9 correspond to the 4th
Two surfaces of lens 4；S9, S10 correspond to two surfaces of the 5th lens 5；S11, S12 correspond to two of the 6th lens 6
Surface；S13 corresponds to a surface of the optical filter between the 6th lens 6 and image planes 8.
Further, non-limiting as a kind of preferred embodiment of the utility model, the second lens 2 and the 6th are saturating
The surface of mirror 6 is aspherical shape, meets following 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 a8Coefficient corresponding to respectively each radial coordinate.The surface S3 and the surface S4 of second lens 2,
The surface S11 of 6th lens 6 and the aspherical correlation values on the surface S12 are as shown in the table:
| K | α1 | α2 | α3 | α4 | α5 | α6 | |
| S3 | -3.065 | 0 | -1.722E-03 | 6.196E-05 | -1.382E-06 | 1.591E-08 | -7.399E-11 |
| S4 | -0.977 | 0 | -2.326E-03 | 1.185E-04 | -4.462E-07 | -1.029E-08 | -1.216E-09 |
| S11 | -8.232 | 0 | -1.135E-03 | -2.205E-05 | -1.009E-05 | 9.497E-07 | -5.433E-08 |
| S12 | 5.460 | 0 | 8.103E-04 | -3.576E-05 | 4.049E-06 | -3.296E-06 | 1.083E-08 |
As can be seen that the optical system of the present embodiment has the superperformances such as high pixel, big target surface in from Fig. 2 to Fig. 4.
A kind of camera module includes at least optical lens, and high pixel road prison described above is equipped in optical lens
Control optical system.
The optical system of the utility model embodiment is mainly made of 6 pieces of lens, and eyeglass piece number is reasonable, and structure is simple, at
This is lower；Using the intercombination of different lens and reasonable distribution focal power, there are the superperformances such as high pixel, big target surface.
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 road monitoring 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 and the 6th 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 positive；
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 positive；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is negative；
The image planes side of 5th lens is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive.
2. high pixel road monitoring optical system as described in claim 1, which is characterized in that the 4th lens and the 5th lens phase
Mutually glued to form compound lens, focal power is negative.
3. high pixel road monitoring optical system as described in claim 1, which is characterized in that the focal length f45 of compound lens is full
Foot: -0.43 < f/f45 < -0.22, wherein f is the focal length of entire optical system.
4. high pixel road monitoring optical system as described in claim 1, which is characterized in that each lens of the optical system are full
The following condition of foot:
(1)0<f/f1<0.1；
(2)-0.82<f/f2<-0.65；
(3)0.65<f/f3<0.86；
(4)-0.43<f/f45<-0.22；
(5)0.58<f/f6<0.80；
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.
5. such as the described in any item high pixel road monitoring optical systems of claim 1-2, which is characterized in that the coke of the first lens
Meet away from f1, Refractive Index of Material Nd1, material Abbe constant Vd1: 0 < f/f1 < 0.1, Nd1 > 1.84, Vd1 < 24, wherein f is
The focal length of entire optical system.
6. such as the described in any item high pixel road monitoring optical systems of claim 1-2, which is characterized in that the coke of the second lens
Meet away from f2, Refractive Index of Material Nd2, material Abbe constant Vd2: -0.82 < f/f2 < -0.65, Nd2 < 1.56, Vd2 > 55,
In, f is the focal length of entire optical system.
7. such as the described in any item high pixel road monitoring optical systems of claim 1-2, which is characterized in that the coke of the third lens
Meet away from f3, Refractive Index of Material Nd3, material Abbe constant Vd3: 0.65 < f/f3 < 0.86, Nd3 > 1.81, Vd3 < 47, wherein
F is the focal length of entire optical system.
8. such as the described in any item high pixel road monitoring optical systems of claim 1-2, which is characterized in that the material of the 4th lens
Expect that refractive index Nd4, material Abbe constant Vd4 meet: Nd4 > 1.80, Vd4 < 47；And/or the 5th lens Refractive Index of Material
Nd5, material Abbe constant Vd5 meet: Nd5 < 1.76, Vd5 > 27.
9. such as the described in any item high pixel road monitoring optical systems of claim 1-2, which is characterized in that the coke of the 6th lens
Meet away from f6, Refractive Index of Material Nd6, material Abbe constant Vd6: 0.58 < f/f6 < 0.80, Nd6 < 1.56, Vd6 > 55, wherein
F is the focal length of entire optical system.
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 road monitoring optical system described in one.
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| CN109975954A (en) * | 2019-04-04 | 2019-07-05 | 广东弘景光电科技股份有限公司 | High pixel road monitoring optical system and its camera module of application |
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