CN220491108U - Vehicle-mounted automobile data recorder lens with glass-plastic mixed structure - Google Patents
Vehicle-mounted automobile data recorder lens with glass-plastic mixed structure Download PDFInfo
- Publication number
- CN220491108U CN220491108U CN202321865212.7U CN202321865212U CN220491108U CN 220491108 U CN220491108 U CN 220491108U CN 202321865212 U CN202321865212 U CN 202321865212U CN 220491108 U CN220491108 U CN 220491108U
- Authority
- CN
- China
- Prior art keywords
- lens
- glass
- equal
- vehicle
- data recorder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011521 glass Substances 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims description 26
- 238000003384 imaging method Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Lenses (AREA)
Abstract
The utility model belongs to the technical field of vehicle-mounted lenses, and particularly relates to a vehicle-mounted recorder lens with a glass-plastic mixed structure, which comprises a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5, wherein the first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the fifth lens L5 are sequentially arranged at intervals from left to right along a light incident light path and sequentially from an object side to an image side; a STOP is arranged between the second lens L2 and the third lens L3; the second lens L2, the fourth lens L4 and the fifth lens L5 are all plastic aspherical lenses; the first lens L1 and the third lens L3 are glass lenses. The utility model can realize large aperture by reasonably combining the glass lens and the plastic lens, has good imaging quality, high overall reliability of the system and reduced assembly sensitivity, adopts glass-plastic mixed design, has simpler structure, small size and quality, and has the most advantage of reducing cost.
Description
Technical Field
The utility model relates to the technical field of lenses for vehicle-mounted automobile data recorders, in particular to a lens with a glass-plastic mixed structure.
Background
With the popularization of automobiles, the automobile is provided with the automobile-mounted automobile data recorder lens, and after the automobile data recorder is arranged, video images and sound of the whole running process of the automobile can be recorded, so that evidence can be provided for traffic accidents. However, all the existing optical lenses for the vehicle-mounted automobile data recorder are of all-glass structures; however, the cost of the actual product is increased, the structure is complex, the processing period is long, the problem that the optical lens is troublesome or is not durable and easy to damage is caused, and the like, so that the optical lens with low cost and low processing difficulty and simultaneously ensuring the imaging quality is very necessary.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the existing optical lenses for the vehicle-mounted automobile data recorder are all of a full glass structure; the product cost is increased, the structure is complex, and the processing period is long and troublesome or is not durable; therefore, the lens structure and the material in the optical system are required to be controlled and enhanced.
In order to solve the technical problems, the utility model further adopts the following technical scheme: a vehicle-mounted automobile data recorder lens with a glass-plastic mixed structure comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged at intervals from left to right along a light incident light path and sequentially arranged from an object space to an image space; a STOP is arranged between the second lens and the third lens; the second lens, the fourth lens and the fifth lens are all plastic aspherical lenses; the first lens and the third lens are glass lenses.
The beneficial effects of the utility model are as follows: the large aperture can be realized by reasonably combining the glass lens and the plastic lens, the imaging quality is good, clear and bright monitoring pictures can be realized under low illumination, meanwhile, the temperature compensation function is realized, and the focus is not removed when the lens is used in an environment of-40 ℃ to 105 ℃; the system has high overall reliability, low assembly sensitivity, simple structure, small size and quality, and reduced cost due to the adoption of glass-plastic mixed design.
As a further improvement of the present utility model, the technical problem to be solved is: the light collection effect of the lens also needs to be further optimized by structural design.
In order to solve the technical problems, the utility model further adopts the following technical scheme: a filter is arranged at the rear side of the fifth lens; the first lens is a convex-concave negative focal power lens, the second lens is a convex-concave positive focal power lens, the third lens is a biconvex positive focal power lens, the fourth lens is a biconcave negative focal power lens, and the fifth lens is a biconvex positive focal power lens.
The improved beneficial effects are as follows: the convex-concave negative focal power lens structure design of the first lens can collect light rays with a large field as much as possible, so that the light rays enter the optical system; the incidence angle of the light rays with large view fields can be further reduced by the aid of the following lenses, and the control of the chief ray angle CRA is facilitated.
As a further improvement of the present utility model, the technical problem to be solved is: the better imaging quality of the overall optical system requires optimization of the lens optical coefficients.
In order to solve the technical problems, the utility model further adopts the following technical scheme: the first lens satisfies the relation: nd is more than or equal to 1.58, vd is less than or equal to 61.2; the second lens satisfies the relation: nd is more than or equal to 1.58, vd is more than or equal to 29.9; the third lens satisfies the relation: nd is more than or equal to 1.77, vd is less than or equal to 49.6; the fourth lens satisfies the relation: nd is more than or equal to 1.64, vd is less than or equal to 23.5; the fifth lens satisfies the relation: nd is more than or equal to 1.53, vd is more than or equal to 55.8; wherein, the refractive index is Nd, and Vd is Abbe number.
The improved beneficial effects are as follows: the optical system formed by the lenses has the advantages of short total length of the optical path, small volume of the lens, large aperture of the system and good imaging quality.
As a further improvement of the present utility model, the technical problem to be solved is: the proportional distribution of the optical power of the optical system needs to be optimized.
In order to solve the technical problems, the utility model further adopts the following technical scheme: the focal length of the optical system is f, whichThe focal lengths of the first lens, the second lens, the third lens, the fourth lens and the fifth lens are f respectively 1 、f 2 、f 3 、f 4 、f 5 Wherein f 1 、f 2 、f 3 、f 4 、f 5 The following ratio is satisfied with f: -6<f 1 /f<-5，-3<f 2 /f<-2，6<f 3 /f<5，-4<f 4 /f<-2，5</f<3。
The improved beneficial effects are as follows: the optical power of the optical system formed by the utility model is reasonably distributed according to the proportion, and each lens is in a certain proportion relative to the focal length of the system, so that the aberration of the optical system formed by the utility model in the wavelength range of 435-658 nm is reasonably corrected and balanced.
Drawings
Fig. 1 is a schematic view of the internal structure of a lens in the imaging plane of the present utility model.
Fig. 2 is an MTF graph of a lens optical system in the present utility model.
Fig. 3 is a defocus MTF graph of a lens optical system of the present utility model.
The text labels in the figures are expressed as: l1, a first lens; l2, a second lens; l3, a third lens; l4, a fourth lens; l5, a fifth lens; l6, an optical filter; STOP, STOP.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.
Example 1:
the vehicle-mounted automobile data recorder lens with the glass-plastic mixed structure comprises a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 which are sequentially arranged at intervals from left to right along a light incident light path and sequentially arranged from an object space to an image space; a STOP is arranged between the second lens L2 and the third lens L3; the second lens L2, the fourth lens L4 and the fifth lens L5 are all plastic aspherical lenses; the first lens L1 and the third lens L3 are glass lenses.
Example 2:
as a further optimization of the above embodiment: the vehicle-mounted automobile data recorder lens with the glass-plastic mixed structure comprises a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 which are sequentially arranged at intervals from left to right along a light incident light path and sequentially arranged from an object space to an image space; a STOP is arranged between the second lens L2 and the third lens L3; the second lens L2, the fourth lens L4 and the fifth lens L5 are all plastic aspherical lenses; the first lens L1 and the third lens L3 are glass lenses; a filter L6 is arranged on the rear side of the fifth lens L5; the first lens L1 is a convex-concave negative focal power lens, the second lens L2 is a convex-concave positive focal power lens, the third lens L3 is a biconvex positive focal power lens, the fourth lens L4 is a biconcave negative focal power lens, and the fifth lens L5 is a biconvex positive focal power lens.
Example 3:
as a further optimization of the above embodiment: the vehicle-mounted automobile data recorder lens with the glass-plastic mixed structure comprises a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 which are sequentially arranged at intervals from left to right along a light incident light path and sequentially arranged from an object space to an image space; a STOP is arranged between the second lens L2 and the third lens L3; the second lens L2, the fourth lens L4 and the fifth lens L5 are all plastic aspherical lenses; the first lens L1 and the third lens L3 are glass lenses; the first lens satisfies the relation: nd is more than or equal to 1.58, vd is less than or equal to 61.2; the second lens satisfies the relation: nd is more than or equal to 1.58, vd is more than or equal to 29.9; the third lens satisfies the relation: nd is more than or equal to 1.77, vd is less than or equal to 49.6; the fourth lens satisfies the relation: nd is more than or equal to 1.64, vd is less than or equal to 23.5; the fifth lens satisfies the relation: nd is more than or equal to 1.53, vd is more than or equal to 55.8; wherein, the refractive index is Nd, and Vd is Abbe number.
Example 4:
as a further optimization of the above embodiment: glass plasticThe vehicle-mounted automobile data recorder lens with the hybrid structure comprises a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 which are sequentially arranged at intervals from left to right along a light incident light path and sequentially arranged from an object space to an image space; a STOP is arranged between the second lens L2 and the third lens L3; the second lens L2, the fourth lens L4 and the fifth lens L5 are all plastic aspherical lenses; the first lens L1 and the third lens L3 are glass lenses; the focal length of the optical system is f, and the focal lengths of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the fifth lens L5 are respectively f 1 、f 2 、f 3 、f 4 、f 5 Wherein f 1 、f 2 、f 3 、f 4 、f 5 The following ratio is satisfied with f: -6<f 1 /f<-5，-3<f 2 /f<-2，6<f 3 /f<5，-4<f 4 /f<-2，5</f<3。
In an embodiment, the technical indexes of the implementation of the optical system are as follows:
1) Focal length: effl=2.8 mm; (2) aperture f=1.8; (3) angle of view: 2w is more than or equal to 152 degrees; (4) optical distortion: an imaging circle diameter of less than 80 percent (5) is greater than phi 6.6; (6) operating band: 430-700 nm; (7) The total optical length TTL is less than or equal to 21mm, and the optical back intercept BFL is more than or equal to 2.5mm; (8) The lens is suitable for two and five million pixel CCD or CMOS cameras.
From fig. 2 and 3, it can be seen that the optical system has excellent imaging quality and fully meets the requirement of two million pixels.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the utility model, and it is noted that there is virtually no limit to the specific structure which may be imposed by those skilled in the art without departing from the spirit of the utility model, and that modifications, adaptations, or variations of the foregoing features may be combined in a suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.
Claims (4)
1. Vehicle-mounted automobile data recorder lens with glass-plastic mixed structure, which is characterized in that: the lens comprises a first lens L1, a second lens L2, a third lens L3, a fourth lens L4 and a fifth lens L5 which are sequentially arranged at intervals along a light incident light path and sequentially arranged from an object side to an image side; a STOP is arranged between the second lens L2 and the third lens L3; the second lens L2, the fourth lens L4 and the fifth lens L5 are all plastic aspherical lenses; the first lens L1 and the third lens L3 are glass lenses.
2. The vehicle-mounted automobile data recorder lens with the glass-plastic mixed structure as claimed in claim 1, wherein: a filter L6 is arranged on the rear side of the fifth lens L5; the first lens L1 is a convex-concave negative focal power lens, the second lens L2 is a convex-concave positive focal power lens, the third lens L3 is a biconvex positive focal power lens, the fourth lens L4 is a biconcave negative focal power lens, and the fifth lens L5 is a biconvex positive focal power lens.
3. The vehicle-mounted automobile data recorder lens with the glass-plastic mixed structure as claimed in claim 1, wherein: the first lens L1 satisfies the relation: nd is more than or equal to 1.58, vd is less than or equal to 61.2; the second lens L2 satisfies the relation: nd is more than or equal to 1.58, vd is more than or equal to 29.9; the third lens L3 satisfies the relation: nd is more than or equal to 1.77, vd is less than or equal to 49.6; the fourth lens L4 satisfies the relation: nd is more than or equal to 1.64, vd is less than or equal to 23.5; the fifth lens L5 satisfies the relation: nd is more than or equal to 1.53, vd is more than or equal to 55.8; wherein, the refractive index is Nd, and Vd is Abbe number.
4. The vehicle-mounted automobile data recorder lens with the glass-plastic mixed structure as claimed in claim 1, wherein: the focal length of the optical system is f, and the focal lengths of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the fifth lens L5 are respectively f 1 、f 2 、f 3 、f 4 、f 5 Wherein f 1 、f 2 、f 3 、f 4 、f 5 The following ratio is satisfied with f: -6<f 1 /f<-5，-3<f 2 /f<-2，6<f 3 /f<5，-4<f 4 /f<-2，5<f 5 /f<3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321865212.7U CN220491108U (en) | 2023-07-17 | 2023-07-17 | Vehicle-mounted automobile data recorder lens with glass-plastic mixed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321865212.7U CN220491108U (en) | 2023-07-17 | 2023-07-17 | Vehicle-mounted automobile data recorder lens with glass-plastic mixed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220491108U true CN220491108U (en) | 2024-02-13 |
Family
ID=89838958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321865212.7U Active CN220491108U (en) | 2023-07-17 | 2023-07-17 | Vehicle-mounted automobile data recorder lens with glass-plastic mixed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220491108U (en) |
-
2023
- 2023-07-17 CN CN202321865212.7U patent/CN220491108U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11733483B2 (en) | Optical lens assembly and imaging device including seven lenses of −+−++−+ or −+−+−++ refractive powers | |
| CN106842520B (en) | High-definition panoramic all-around optical imaging system | |
| JP2010107606A (en) | Imaging lens and imaging apparatus | |
| CN203573017U (en) | High-definition wide-angle lens | |
| CN103048769A (en) | Image-capturing lens | |
| CN201222114Y (en) | Five-lens type optical image-fetching lens | |
| CN111198430B (en) | Optical lens and imaging apparatus | |
| CN106707467B (en) | A kind of telephoto lens | |
| CN100589007C (en) | Wide-angle lens | |
| CN108614344B (en) | Vehicle-mounted wide-angle lens | |
| CN211786313U (en) | Optical system, camera module and electronic equipment | |
| CN110955031B (en) | 2.8mm wide-angle optical system and imaging method thereof | |
| CN217821060U (en) | Large-angle vehicle-mounted automobile data recorder lens | |
| CN220491108U (en) | Vehicle-mounted automobile data recorder lens with glass-plastic mixed structure | |
| CN218122347U (en) | High-pixel day and night dual-purpose optical system and camera module applying same | |
| CN106371196A (en) | Large-aperture, ultra-wide-field, high-pixel and small-overall-length optical system and camera lens applied to same | |
| CN114047599B (en) | Large-aperture high-definition optical lens | |
| CN117492167A (en) | Glass-plastic mixed optical system | |
| CN211454081U (en) | 2.8mm wide-angle optical system | |
| KR101183188B1 (en) | A Super Wide Angle Camera Lens for Surveillance | |
| CN212873033U (en) | Wide-angle high-pixel 4K optical system and camera module applying same | |
| CN211375167U (en) | Large-light-transmission high-resolution optical imaging lens | |
| CN110554488B (en) | Small day and night vehicle-mounted optical system and working method thereof | |
| CN218767541U (en) | Wide-angle ultrahigh-definition optical lens for vehicle-mounted driving recording | |
| CN218974667U (en) | Large aperture high-definition lens for night vision environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |