Large target surface high-definition automobile cabin outside rearview mirror optical monitoring system
By using a lens combination with a 6G+1GM structure design and reasonable parameter settings, the problems of small target surface, small field of view, and low imaging quality in vehicle-mounted optical systems have been solved. This has enabled high-definition imaging with a large target surface and adaptability to complex environments, reduced the risk of low-light night vision, and improved color reproduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGXI TELES OPTICAL CO LTD
- Filing Date
- 2023-12-20
- Publication Date
- 2026-06-02
AI Technical Summary
Existing vehicle-mounted optical systems suffer from problems such as small target surface, insufficient field of view, low imaging pixel count, low edge brightness when shooting at large angles, severe stray light, and poor imaging performance in high or low temperature environments.
The lens assembly adopts a 6G+1GM structure design, including negative meniscus, negative plano-concave, positive plano-convex, positive biconvex, and positive biconcave lenses. The aperture stop is set between the third and fourth lenses. It is equipped with a 1/1.8” large target surface chip, a large aperture of 1.6 and a wide angle of 110°. The lens parameters are strictly controlled to reduce the influence of aberrations and stray light.
It achieves high-definition imaging with a large target surface, adapts to complex temperature environments, reduces the risk of low-light night vision, improves color reproduction and imaging uniformity, and meets the low CRA requirements of the IMX490 large target surface chip.
Smart Images
Figure CN117706732B_ABST