一种镜头系统
By using an eight-lens lens system design and employing a negative-negative-positive-positive-negative-positive-negative-positive optical power configuration and lens combination, the problem of existing technologies being unable to simultaneously accommodate short, medium, and long focal lengths and large apertures has been solved, achieving the design of a high-resolution day and night confocal lens suitable for monitoring equipment with 1/1.8-inch chips.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGGUAN YUTONG OPTICAL TECH
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to achieve the high resolution and day/night focus of a telephoto lens design using a 1/1.8-inch sensor while maintaining a short overall length, especially for sensors smaller than 1/2.7 inches, where the requirements for short, medium, and long focal lengths and large apertures cannot be met simultaneously.
The lens system is designed with eight lenses, including three lens groups with optical power configurations of negative-negative-positive-positive-negative-positive-negative-positive. It combines plastic aspherical and glass spherical lenses, rationally sets the number of lens groups and optical power, and adds apertures and filters to adjust beam propagation and improve image quality.
A high-resolution day and night confocal lens system with a focal length of approximately 7.6mm, a total length of less than 22.5mm, and an aperture of f/1.28 has been achieved. It can produce clear images in low-light conditions, is suitable for 1/1.8-inch chips, and meets the all-weather monitoring requirements of surveillance equipment.
Smart Images
Figure CN120630447B_ABST