CN107741625A - A kind of low-cost and high-performance drive recorder camera lens - Google Patents
A kind of low-cost and high-performance drive recorder camera lens Download PDFInfo
- Publication number
- CN107741625A CN107741625A CN201710949116.3A CN201710949116A CN107741625A CN 107741625 A CN107741625 A CN 107741625A CN 201710949116 A CN201710949116 A CN 201710949116A CN 107741625 A CN107741625 A CN 107741625A
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- China
- Prior art keywords
- lens
- focal length
- drive recorder
- cost
- low
- Prior art date
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- 239000011521 glass Substances 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004297 night vision Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
Abstract
The invention discloses a kind of low-cost and high-performance drive recorder camera lens, including front lens group, aperture diaphragm and rear lens group, first, second lens be towards as one side be concave surface, the 3rd lens towards image side be simultaneously convex surface；Four, the 6th lens be towards image side one side be convex surface, 5th lens towards image side one side be concave surface, aperture diaphragm is arranged between the 3rd lens and the 4th lens and close to the 4th lens, the present invention is using the optical texture for being conducive to provide resisting temperature ability, second lens, the 5th lens are using negative non-spherical lens, 4th lens, the 6th lens use positive non-spherical lens, and the second lens and the 6th lens are mainly used in reducing image planes chief ray incidence angles away from aperture diaphragm position.Resisting temperature changing capability is improved, the present invention is made the focal length and tolerance distributing equilibrium of each lens in drive recorder camera lens, effectively reduced structure tolerance sensitivity problem using the arrangement of the distribution of rational focal power, sphere and aspherical lens.
Description
Technical field
The present invention relates to a kind of optical lens.More particularly to a kind of low-cost and high-performance is applied to drive recorder optics
Imaging lens.
Background technology
In recent years, safe driving of vehicle and traffic accident quickly tackle the overall background of processing all to drive recorder camera lens
Higher requirement is proposed, the big angle of visual field, high-resolution, large aperture, environment resistant temperature change capabilities are strong and inexpensive.
The camera lens applied to drive recorder is mostly using 4 or the structure of 6 sheet glass eyeglasses at present.Wherein 4 glass
The structure of glass due to piece number very little, it is difficult to reach the effect of optimal imaging and night vision large aperture, the structure of 6 sheet glass eyeglasses,
Although can reach the effect of chemical conversion picture and night vision large aperture, glass lens are labor-intensive enterprises using manually
Manufacture by hand, compared with the plastic lens of mold injection, its optical property consistency is poor, and cost is prohibitively expensive, high-volume
Taken time and effort during production and processing.
The content of the invention
It is an object of the invention to provide a kind of big angle of visual field, high-resolution, large aperture, environment resistant temperature change capabilities are strong
And the camera lens of low cost, to solve the problems mentioned in the above background technology.
To achieve these goals, the technical solution adopted by the present invention is：A kind of low-cost and high-performance drive recorder mirror
Head, including front lens group, aperture diaphragm and the rear lens group set gradually from thing side to image side, the front lens group are included from thing
First lens of the negative focal length that side is set gradually to image side, the second lens of negative focal length, the 3rd lens of positive focal length；After described thoroughly
Microscope group includes the 4th lens of the positive focal length set gradually from the object side to image side, the 5th lens of negative focal length, the 6th of positive focal length the
Lens；First lens and the second lens are that the 3rd lens are towards image side simultaneously to be convex towards as being simultaneously concave surface
Face；4th lens and the 6th lens be towards image side one side be convex surface, the 5th lens towards image side one side be it is recessed
Face；The aperture diaphragm is arranged between the 3rd lens and the 4th lens and close to the 4th lens.
Further, the focal length of first lens is f1, the focal length of first lens is f2, it meets relational expression：
0.6<f1/f2<1。
Further, the focal length of second lens is f2, the focal length of the 6th lens is f6, it meets relational expression：-
0.6<f2/f6<-0.2。
Further, the focal length of the 3rd lens is f3, the focal length of the 6th lens is f6, it meets relational expression：
0.8<f3/f6<1.8。
Further, the focal length of the 4th lens is f4, the focal length of the 5th lens is f5, it meets relational expression：-
1.6<f4/f5<-0.8。
Further, first lens, the 3rd lens are glass spheric glass, second lens, the 4th lens,
Five lens, the 6th lens are plastic cement aspherical lens.
Further, the refractive index of first lens is n1, the Abbe number of the first lens is v1, it meets relational expression：
4.7<n1+ln(v1)<6。
Further, the total focal length of the camera lens is f, and the spacing of the first lens S1 vertexs of surface to image plane is TL, and it is full
Sufficient relational expression：f/TL<0.3.
The present invention has following benefit：The present invention is simple in construction, using the optical texture for being conducive to provide resisting temperature ability,
Second lens, the 5th lens are using negative non-spherical lens, and the 4th lens, the 6th lens use positive non-spherical lens, and second is saturating
Mirror and the 6th lens are mainly used in reducing image planes chief ray incidence angles away from aperture diaphragm position.Improve resisting temperature change energy
Power.The present invention is made each in drive recorder camera lens using the arrangement of the distribution of rational focal power, sphere and aspherical lens
The focal length and tolerance distributing equilibrium of lens, effectively reduce structure tolerance sensitivity problem.
Brief description of the drawings
Fig. 1 is the lens schematic diagram of the embodiment of the present invention；
Fig. 2 is the first analysis diagram of the embodiment of the present invention；
Fig. 3 is the second analysis diagram of the embodiment of the present invention；
Fig. 4 is that the Spot of the embodiment of the present invention schemes；
Fig. 5 is the curvature of field distortion figure of the embodiment of the present invention；
Fig. 6 is the chief ray angle figure of the embodiment of the present invention；
Analysis diagram when Fig. 7 is low temperature 40 degrees below zero of the embodiment of the present invention；
Fig. 8 is analysis diagram when high temperature of the embodiment of the present invention is above freezing 85 degree.
Embodiment
Refering to shown in Fig. 1-8, a kind of low-cost and high-performance drive recorder camera lens, including set gradually from thing side to image side
Front lens group, aperture diaphragm ST and rear lens group, the front lens group includes the negative focal length that sets gradually from the object side to image side
The first lens E1, the second lens E2, the 3rd lens E3 of positive focal length of negative focal length；The rear lens group is included from thing side to picture
4th lens E4 of the positive focal length that side is set gradually, the 5th lens E5 of negative focal length, the 6th lens E6 of positive focal length；Described first
Lens E1 and the second lens E2 be towards as one side be concave surface, the 3rd lens E3 towards image side be simultaneously convex surface；It is described
4th lens E4 and the 6th lens E6 be towards image side one side be convex surface, the 5th lens E5 towards image side one side be it is recessed
Face；The aperture diaphragm is arranged between the 3rd lens E3 and the 4th lens E4 and close to the 4th lens E4.
Further, the focal length of the first lens E1 is f1, the focal length of the first lens E1 is f2, it meets relation
Formula：0.6<f1/f2<1。
Further, the focal length of the second lens E2 is f2, the focal length of the 6th lens E6 is f6, it meets relation
Formula：-0.6<f2/f6<-0.2。
Further, the focal length of the 3rd lens E3 is f3, the focal length of the 6th lens E6 is f6, it meets relation
Formula：0.8<f3/f6<1.8。
Further, the focal length of the 4th lens E4 is f4, the focal length of the 5th lens E5 is f5, it meets relation
Formula：-1.6<f4/f5<-0.8。
Further, the first lens E1, the 3rd lens E3 are glass spheric glass, the second lens E2, the 4th
Lens E4, the 5th lens E5, the 6th lens E6 are plastic cement aspherical lens.
Further, the refractive index of the first lens E1 is n1, the first lens E1 Abbe number is v1, it meets relation
Formula：4.7<n1+ln(v1)<6。
Further, the total focal length of the camera lens is f, and the spacing of the first lens S1 vertexs of surface to image plane is TL, and it is full
Sufficient relational expression：f/TL<0.3.
In embodiments of the present invention, when operating distance is infinity, the total focal length f=3mm, FNO of drive recorder camera lens
=1.40, angle of visual field FOV=142 °, camera lens overall length TL=22.3mm, the parameters of lens group are listed in Table 1 below successively：
In addition, in the embodiment of the present invention, the second lens E2 surface S3 and S4, the second lens group E4 surface S8 and S9 are aspheric
Face, its aspherical correlation values are listed in table 2-1 and table 2-2 successively：
In the above-mentioned each table of the embodiment of the present invention, n is refractive index, and R is radius of curvature, and the lens E6 of the first lens E1 ~ the 6th is successively
Focal length be f1~f6, the drive recorder camera lens that embodiment is provided is to provide a kind of big angle of visual field, high-resolution, big light
The strong and inexpensive camera lens of circle, environment resistant temperature change capabilities, to overcome weak point of the prior art.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
- A kind of 1. low-cost and high-performance drive recorder camera lens, it is characterised in that：Before being set gradually from thing side to image side Lens group（E1, E2, E3), aperture diaphragm（ST）And rear lens group（E4, E5, E6), the front lens group is included from thing side to picture The first lens (E1) for the negative focal length that side is set gradually, the second lens (E2) of negative focal length, the 3rd lens (E3) of positive focal length；Institute Stating rear lens group includes the 4th lens (E4), the 5th lens of negative focal length of the positive focal length set gradually from the object side to image side (E5), the 6th lens (E6) of positive focal length；First lens（E1）With the second lens（E2）It is that direction picture one side is concave surface, 3rd lens（E3）It is convex surface towards image side one side；4th lens（E4）It is towards image side with the 6th lens (E6) Be simultaneously convex surface, the 5th lens (E5) towards image side one side be concave surface；The aperture diaphragm is arranged at the 3rd lens (E3) And the 4th between lens (E4) and close to the 4th lens (E4).
- 2. low-cost and high-performance drive recorder camera lens according to claim 1, it is characterised in that：First lens （E1）Focal length be f1, first lens（E1）Focal length be f2, it meets relational expression：0.6<f1/f2<1。
- 3. low-cost and high-performance drive recorder camera lens according to claim 1, it is characterised in that：Second lens （E2）Focal length be f2, the 6th lens（E6）Focal length be f6, it meets relational expression：-0.6<f2/f6<-0.2。
- 4. low-cost and high-performance drive recorder camera lens according to claim 1, it is characterised in that：3rd lens （E3）Focal length be f3, the 6th lens（E6）Focal length be f6, it meets relational expression：0.8<f3/f6<1.8。
- 5. low-cost and high-performance drive recorder camera lens according to claim 1, it is characterised in that：4th lens （E4）Focal length be f4, the 5th lens（E5）Focal length be f5, it meets relational expression：-1.6<f4/f5<-0.8。
- 6. low-cost and high-performance drive recorder camera lens according to claim 1, it is characterised in that：First lens （E1）, the 3rd lens（E3）For glass spheric glass, second lens（E2）, the 4th lens（E4）, the 5th lens（E5）, Six lens（E6）For plastic cement aspherical lens.
- 7. low-cost and high-performance drive recorder camera lens according to claim 1, it is characterised in that：First lens （E1）Refractive index be n1, the first lens（E1）Abbe number be v1, it meets relational expression：4.7<n1+ln(v1)<6。
- 8. low-cost and high-performance drive recorder camera lens according to claim 1, it is characterised in that：Total Jiao of the camera lens Away from for f, the spacing of the first lens S1 vertexs of surface to image plane is TL, and it meets relational expression：f/TL<0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949116.3A CN107741625A (en) | 2017-10-12 | 2017-10-12 | A kind of low-cost and high-performance drive recorder camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949116.3A CN107741625A (en) | 2017-10-12 | 2017-10-12 | A kind of low-cost and high-performance drive recorder camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107741625A true CN107741625A (en) | 2018-02-27 |
Family
ID=61237413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710949116.3A Pending CN107741625A (en) | 2017-10-12 | 2017-10-12 | A kind of low-cost and high-performance drive recorder camera lens |
Country Status (1)
| Country | Link |
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| CN (1) | CN107741625A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663783A (en) * | 2018-08-28 | 2018-10-16 | 深圳市特莱斯光学有限公司 | A kind of large aperture low cost panorama fish eye lens |
| CN110346917A (en) * | 2019-07-29 | 2019-10-18 | 舜宇光学(中山)有限公司 | Glass modeling mixing tight shot |
| CN110412730A (en) * | 2018-04-28 | 2019-11-05 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN111505795A (en) * | 2019-01-30 | 2020-08-07 | 成都理想境界科技有限公司 | Projection objective |
| WO2021008319A1 (en) * | 2019-07-16 | 2021-01-21 | 江西联创电子有限公司 | Wide-angle lens and imaging device |
| CN114740600A (en) * | 2022-03-31 | 2022-07-12 | 歌尔光学科技有限公司 | Optical projection system and electronic equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110412730A (en) * | 2018-04-28 | 2019-11-05 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN110412730B (en) * | 2018-04-28 | 2022-01-07 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN108663783A (en) * | 2018-08-28 | 2018-10-16 | 深圳市特莱斯光学有限公司 | A kind of large aperture low cost panorama fish eye lens |
| CN108663783B (en) * | 2018-08-28 | 2023-10-10 | 深圳市特莱斯光学有限公司 | Large-aperture low-cost panoramic fisheye lens |
| CN111505795A (en) * | 2019-01-30 | 2020-08-07 | 成都理想境界科技有限公司 | Projection objective |
| WO2021008319A1 (en) * | 2019-07-16 | 2021-01-21 | 江西联创电子有限公司 | Wide-angle lens and imaging device |
| CN110346917A (en) * | 2019-07-29 | 2019-10-18 | 舜宇光学(中山)有限公司 | Glass modeling mixing tight shot |
| CN114740600A (en) * | 2022-03-31 | 2022-07-12 | 歌尔光学科技有限公司 | Optical projection system and electronic equipment |
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