CN214311077U - Be used for commercial car driving big light ring high definition camera lens night - Google Patents
Be used for commercial car driving big light ring high definition camera lens night Download PDFInfo
- Publication number
- CN214311077U CN214311077U CN202022936087.7U CN202022936087U CN214311077U CN 214311077 U CN214311077 U CN 214311077U CN 202022936087 U CN202022936087 U CN 202022936087U CN 214311077 U CN214311077 U CN 214311077U
- Authority
- CN
- China
- Prior art keywords
- focal length
- lens
- plastic aspheric
- positive focal
- night
- 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
Images
Landscapes
- Lenses (AREA)
Abstract
The utility model discloses a be used for commercial car driving big light ring high definition camera lens night, include: the utility model discloses a lens system, including the optical axis follow thing side to image side arrange in proper order have the crescent moon type glass lens of negative focal length, have the second plastic aspheric lens of positive focal length, have the third lens of focal length, diaphragm, have the fourth plastic aspheric lens of negative focal length, have the fifth gluey aspheric lens of positive focal length, have the sixth plastic aspheric lens of positive focal length, the utility model discloses make lens system's aberration obtain great degree's correction to the MTF resolution is high, guarantees at whole image plane high definition and can both evenly form images, has improved the luminous flux at night and the effect of making a video recording night, shortens the research and development cycle, improves research and development efficiency.
Description
Technical Field
The utility model relates to a be used for night commercial car to drive big light ring high definition camera lens.
Background
Along with the development of society, people are getting bigger and bigger to the demand of driving at night, driving at night has very big influence to driver's fatigue to be used for commercial car night driving camera lens ubiquitous aperture undersize at present, luminance is darker relatively, so the during operation 940 nm's lamp just need add a lot, leads to generating heat very seriously, and the heat of transmission can lead to the driver to feel that there is the burning sensation in the face, aggravates driver's fatigue driving at night. The imaging of the night driving lens of the existing commercial vehicle is mainly 940nm near infrared imaging, mainly 1/3 chips are more, but the 1/3 chip can cause the size of the matched lens to be large, the module is not beneficial to being installed at the position of a Green pillar of the vehicle, the position of the Green pillar refers to two sides of a front window, the size and the weight of the lens are increased due to the fact that the large aperture is opened for matching the large target surface of the 1/3 chip in the prior art, the cost is improved, the miniaturization is not beneficial, and the night driving lens of the existing technical patent for the commercial vehicle is almost blank.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the prior art, providing a be used for commercial car driving big light ring high definition camera lens night.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a be used for night commercial car to drive big light ring high definition camera lens includes: the lens system comprises a meniscus glass lens with a negative focal length, a second plastic aspheric lens with a positive focal length, a third plastic aspheric lens with a positive focal length, a diaphragm, a fourth plastic aspheric lens with a negative focal length, a fifth plastic aspheric lens with a positive focal length and a sixth plastic aspheric lens with a positive focal length, which are sequentially arranged from the object side to the image side along the optical axis, wherein the effective focal length of the fifth plastic aspheric lens with a positive focal length is f5, the sixth plastic aspheric lens with a positive focal length is f6, and the ratio range of f6 to f5 is 2.5< f6/f5< 5.2.
Preferably, the optical filter is further included, and the sixth plastic aspheric lens with the positive focal length is located between the fifth plastic aspheric lens with the positive focal length and the optical filter.
Preferably, the effective focal length of the meniscus glass lens with the negative focal length is f1, the effective focal length of the second plastic aspheric lens with the positive focal length is f2, the effective focal length of the third plastic aspheric lens with the positive focal length is f3, the effective focal length of the fourth plastic aspheric lens with the negative focal length is f4, the ratio range of f1 to f3 is-0.58 < f1/f3 < -2.54, and the ratio range of f2 to f4 is-18.2 < f2/f4 < 22.3.
Preferably, the third lens having a positive focal length is a double convex glass lens.
Preferably, the second plastic aspherical lens having a positive focal length has an abbe number less than 30.
Preferably, the second plastic aspherical lens having a positive focal length has an abbe number less than 30.
Preferably, the abbe number of the fifth plastic aspheric lens having a positive focal length and the abbe number of the sixth plastic aspheric lens having a positive focal length are both greater than 50.
Preferably, the refractive index of the third lens E3 having a positive focal length is greater than 1.70.
Preferably, the refractive index of the fourth plastic aspherical lens having a negative focal length is greater than 1.60 and less than 1.75.
The utility model has the advantages as follows: the utility model reduces the weight and volume of the lens, reduces the manufacturing cost of the lens and accelerates the research and development period; the utility model provides an optical parameter and imaging condition among the optical lens system match preferred for the aberration of lens system obtains great degree correction, and the MTF resolution is high, guarantees at whole image plane high definition and can both evenly image, has improved the luminous flux at night and the effect of making a video recording at night, and in addition, all optical glass lens adopt the aspheric surface design, and lens cold processing technology can be good, and glass material is with low costs and finished product camera lens price is also lower, and the volume production rate is high; all plastic lenses have good processing performance, the research and development period is shortened, and the research and development efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a graph of the Modulation Transfer Function (MTF) of the 940nm band of the present invention;
FIG. 3 is a defocus graph of the present invention;
fig. 4 is a relative illuminance diagram of the present invention;
fig. 5 is an optical distortion diagram of the present invention.
Detailed Description
The technical scheme of the utility model is further explained by combining the attached drawings of the specification:
as shown in fig. 1, a large-aperture high-definition lens for driving a commercial vehicle at night comprises: the lens system comprises a meniscus glass lens E1 with a negative focal length, a second plastic aspheric lens E2 with a positive focal length, a third block lens E3 with a positive focal length, a stop ST, a fourth plastic aspheric lens E4 with a negative focal length, a fifth plastic aspheric lens E5 with a positive focal length and a sixth plastic aspheric lens E6 with a positive focal length, wherein the effective focal length of the fifth plastic aspheric lens E5 with a positive focal length is f5, the sixth plastic aspheric lens E6 with a positive focal length is f6, and the ratio range of f6 to f5 is 2.5< f6/f5< 5.2.
As shown in fig. 1, the optical filter E7 is further included, and the sixth plastic aspheric lens with a positive focal length E6 is located between the fifth plastic aspheric lens with a positive focal length E5 and the optical filter E7.
As shown in fig. 1, the effective focal length of the meniscus glass lens E1 with negative focal length is f1, the effective focal length of the second plastic aspheric lens E2 with positive focal length is f2, the effective focal length of the third plastic aspheric lens E3 with positive focal length is f3, the effective focal length of the fourth plastic aspheric lens E4 with negative focal length is f4, the ratio range of f1 to f3 is-0.58 < f1/f3 < -2.54, and the ratio range of f2 to f4 is-18.2 < f2/f4 < 22.3.
As shown in fig. 1, the third lens E3 having a positive focal length is a double convex glass lens.
As shown in fig. 1, the abbe number of the second plastic aspheric lens E2 with positive focal length is less than 30.
As shown in fig. 1, the abbe number of the second plastic aspheric lens E2 with positive focal length is less than 30.
As shown in fig. 1, abbe numbers of the fifth plastic aspheric lens E5 having a positive focal length and the sixth plastic aspheric lens E6 having a positive focal length are both greater than 50.
As shown in fig. 1, the refractive index of the third lens E3 having a positive focal length is greater than 1.70.
As shown in fig. 1, the refractive index of the fourth plastic aspheric lens E4 having a negative focal length is greater than 1.60 and less than 1.75.
Various parameters of the large-aperture high-definition lens for driving the commercial vehicle at night are listed in the table 1 and the table 2 in sequence. The effective focal length of the optical system provided in the first table is 3.90mm, the clear aperture is F/1.15, the total length of the optical system is 15.4mm, the field angle is 60 degrees, the thickness of the optical filter is 0.7mm, the refractive index is 1.52, and the Abbe constant is 64.2. Wherein Surf is surface number, Type is surface Type, Radius is curvature Radius, Thickness is lens Thickness, Index is refractive Index, ABB is dispersion coefficient, and EFL-E is focal length.
| Surf | Type | Radius | Thickness | Index | ABB | EFL-E |
| OBJ | STANDARD | INFINITY | INFINITY | |||
| 1 | STANDARD | 7.366336 | 0.6 | 1.487489 | 70.441164 | -9.580747 |
| 2 | STANDARD | 2.756792 | 2.432036 | |||
| 3 | EVENASPH | -2.625689 | 1.417316 | 1.635517 | 23.971842 | 59.086394 |
| 4 | EVENASPH | -2.950494 | 0.1 | |||
| 5 | STANDARD | 6.295039 | 1.98736 | 1.7725 | 49.624284 | 5.370585 |
| 6 | STANDARD | -9.922226 | 0.5 | |||
| STO | STANDARD | INFINITY | 0.488003 | |||
| 8 | EVENASPH | -6.393318 | 0.65 | 1.635517 | 23.971842 | -2.951659 |
| 9 | EVENASPH | 2.621479 | 0.155376 | |||
| 10 | EVENASPH | 3.140794 | 2.182415 | 1.535081 | 55.779665 | 3.92509 |
| 11 | EVENASPH | -4.59005 | 0.1 | |||
| 12 | EVENASPH | 4.364923 | 1.187495 | 1.535081 | 55.779665 | 14.774412 |
| 13 | EVENASPH | 9.016579 | 0.5 | |||
| 14 | STANDARD | INFINITY | 0.7 | 1.516798 | 64.198258 | |
| 15 | STANDARD | INFINITY | 2.4 | |||
TABLE 1
Surf1, Surf2 correspond to both surfaces of a meniscus glass lens E1 having a negative focal length, Surf3, Surf4 correspond to both surfaces of a second plastic aspherical lens E2 having a positive focal length, Surf5, Surf6 correspond to both surfaces of a third plastic aspherical lens E3 having a positive focal length, SurfSTO is a diaphragm device ST surface, Surf8, Surf9 correspond to both surfaces of a fourth plastic aspherical lens E4 having a negative focal length, Surf10, Surf11 correspond to both surfaces of a fifth plastic aspherical lens E5 having a positive focal length, Surf12, Surf13 correspond to both surfaces of a sixth plastic aspherical lens E6 having a positive focal length, and Surf14, Surf15 correspond to both surfaces of a filter E7.
Aspheric data are shown in table two:
watch two
Fig. 2 is a graph of the Modulation Transfer Function (MTF) in the 940nm band, representing the integrated resolving power of the optical system, where the horizontal axis represents spatial frequency in units: the number of turns per millimeter (cycles/mm), the longitudinal axis represents the numerical value of a Modulation Transfer Function (MTF), the numerical value of the MTF is used for evaluating the imaging quality of a lens, the value range is 0-1, particularly, the optical transfer function is used for evaluating the imaging quality of an optical system in a more accurate, visual and common mode, the higher and smoother the curve is, the better the imaging quality of the system is, and the stronger the restoring capability to a real image is; as can be seen from fig. 2, when the spatial frequency of the visible light band is 160lp/mm, the MTF of the imaging area near the center is greater than 0.67, the imaging quality is good, and it can be seen from the defocus graph of fig. 3 that the focal depth of the lens is good, the optical lens provided by the specific implementation mode corrects various aberrations, such as spherical aberration, coma, astigmatism, field curvature, chromatic aberration of magnification, chromatic aberration of position, and the like, thereby improving the resolution, and the performance of the lens can reach a resolution of more than 500 ten thousand pixels at night. As can be seen from fig. 2 and 3, the optical lens system according to the embodiment of the present invention has corrected and balanced various aberrations to a good level.
Fig. 4 is a relative illumination chart according to an embodiment of the present invention, and it can be seen from fig. 4 that the maximum relative illumination of the lens is greater than 55%.
Fig. 5 is an optical distortion diagram according to an embodiment of the present invention, and it can be seen from fig. 5 that the optical distortion of the lens is controlled below-10%.
The utility model adopts 2 glass lenses and 4 plastic lenses, reduces the weight and volume of the lens, reduces the manufacturing cost of the lens and accelerates the research and development period; the utility model provides an optical parameter and imaging condition among the optical lens system match preferred for the aberration of lens system obtains great degree correction, and the MTF resolution is high, guarantees at whole image plane high definition and can both evenly image, has improved the luminous flux at night and the effect of making a video recording at night, and in addition, all optical glass lens adopt the aspheric surface design, and lens cold processing technology can be good, and glass material is with low costs and finished product camera lens price is also lower, and the volume production rate is high; all plastic lenses have good processing performance, the research and development period is shortened, and the research and development efficiency is improved.
It should be noted that the above list is only one specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications can be made, and in short, all modifications that can be directly derived or suggested by the person skilled in the art from the disclosure of the present invention should be considered as the protection scope of the present invention.
Claims (9)
1. The utility model provides a be used for night commercial car to drive big light ring high definition camera lens which characterized in that includes: the lens system comprises a meniscus glass lens E1 with a negative focal length, a second plastic aspheric lens E2 with a positive focal length, a third block lens E3 with a positive focal length, a stop ST, a fourth plastic aspheric lens E4 with a negative focal length, a fifth plastic aspheric lens E5 with a positive focal length and a sixth plastic aspheric lens E6 with a positive focal length, wherein the effective focal length of the fifth plastic aspheric lens E5 with a positive focal length is f5, the sixth plastic aspheric lens E6 with a positive focal length is f6, and the ratio range of f6 to f5 is 2.5< f6/f5< 5.2.
2. The large-aperture high-definition lens for night commercial vehicle driving as claimed in claim 1, further comprising a filter E7, wherein the sixth plastic aspheric lens E6 with positive focal length is located between the fifth plastic aspheric lens E5 with positive focal length and the filter E7.
3. The large-aperture high-definition lens for night commercial vehicle driving as claimed in claim 1, wherein the effective focal length of the meniscus glass lens E1 with negative focal length is f1, the effective focal length of the second plastic aspheric lens E2 with positive focal length is f2, the effective focal length of the third plastic aspheric lens E3 with positive focal length is f3, the effective focal length of the fourth plastic aspheric lens E4 with negative focal length is f4, the ratio range of f1 to f3 is-0.58 < f1/f3 < -2.54, and the ratio range of f2 to f4 is-18.2 < f2/f4 < 22.3.
4. The large-aperture high-definition lens for driving of a commercial vehicle at night according to claim 1, wherein the third lens E3 with the positive focal length is a double-convex glass lens.
5. The large-aperture high-definition lens for driving of a commercial vehicle at night as claimed in claim 1, wherein the abbe number of the second plastic aspheric lens E2 with positive focal length is less than 30.
6. The large-aperture high-definition lens for driving of a commercial vehicle at night as claimed in claim 1, wherein the abbe number of the second plastic aspheric lens E2 with positive focal length is less than 30.
7. The large-aperture high-definition lens for night commercial vehicle driving as claimed in claim 1, wherein the abbe number of the fifth plastic aspheric lens E5 with positive focal length and the abbe number of the sixth plastic aspheric lens E6 with positive focal length are both greater than 50.
8. The large-aperture high-definition lens for driving of a commercial vehicle at night according to claim 1, wherein the refractive index of the third lens E3 with the positive focal length is greater than 1.70.
9. The large-aperture high-definition lens for driving of a commercial vehicle at night as claimed in claim 1, wherein the refractive index of the fourth plastic aspheric lens E4 with negative focal length is greater than 1.60 and less than 1.75.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022936087.7U CN214311077U (en) | 2020-12-10 | 2020-12-10 | Be used for commercial car driving big light ring high definition camera lens night |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022936087.7U CN214311077U (en) | 2020-12-10 | 2020-12-10 | Be used for commercial car driving big light ring high definition camera lens night |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214311077U true CN214311077U (en) | 2021-09-28 |
Family
ID=77852573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022936087.7U Active CN214311077U (en) | 2020-12-10 | 2020-12-10 | Be used for commercial car driving big light ring high definition camera lens night |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214311077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114578517A (en) * | 2022-03-14 | 2022-06-03 | 江西特莱斯光学有限公司 | Ultrashort large-target-surface TOF optical lens |
-
2020
- 2020-12-10 CN CN202022936087.7U patent/CN214311077U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114578517A (en) * | 2022-03-14 | 2022-06-03 | 江西特莱斯光学有限公司 | Ultrashort large-target-surface TOF optical lens |
| CN114578517B (en) * | 2022-03-14 | 2024-01-02 | 江西特莱斯光学有限公司 | Ultra-short large target surface TOF optical lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202854391U (en) | Image lens assembly | |
| CN202049278U (en) | Optical lens assembly for image capture | |
| CN202886721U (en) | Wide-angle optical lens assembly | |
| CN104834077B (en) | Image pickup lens for image pickup device | |
| CN103913824A (en) | Photographic lens and photographic apparatus using the same | |
| CN204595310U (en) | Camera lens | |
| CN103197401A (en) | Image lens assembly | |
| CN107065140B (en) | Intelligent vehicle-mounted high-pixel wide-angle lens | |
| CN106501921B (en) | Unmanned aerial vehicle camera lens | |
| CN103323931B (en) | Optical lens assembly | |
| CN208172360U (en) | The small four-piece type camera lens of image planes incident angle | |
| CN214311077U (en) | Be used for commercial car driving big light ring high definition camera lens night | |
| CN201654312U (en) | High pixel wide-angle pick-up lens | |
| CN101846792A (en) | High-pixel wide-angle camera | |
| CN203502654U (en) | Optical lens assembly | |
| CN112415727A (en) | Be used for commercial car driving big light ring high definition camera lens night | |
| CN102466866A (en) | Optical camera lens group | |
| CN217718235U (en) | Large-view-range and large-imaging-area optical system | |
| CN101414045B (en) | Optical lens component | |
| CN210835406U (en) | 3P ultra-large wide-angle large-aperture under-screen fingerprint lens | |
| CN209946507U (en) | Full-color night-vision inner focusing lens | |
| CN112130296A (en) | Small-size closely discernment camera lens | |
| CN102053342A (en) | Ultra-wide-angle lens | |
| CN115616737B (en) | Large-aperture high-definition optical lens | |
| CN220271650U (en) | Glass-plastic mixed lens and image acquisition equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |