长焦镜头
By using a six-lens telephoto lens design, which combines glass spherical and plastic aspherical lenses, the problems of short focal length, large size, and high cost of security lenses are solved, achieving miniaturization and long-distance monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGGUAN YUTONG OPTICAL TECH
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing security cameras have short focal lengths, making it difficult to achieve long-distance monitoring. They are also large, expensive, and limited by installation space.
The telephoto lens design employs six lenses, including a hybrid structure of glass spherical lenses and plastic aspherical lenses. By rationally allocating the optical power, surface shape, and materials of the lenses, the total optical length is designed to be less than 14.5mm, the focal length to be approximately 11.5mm, and the maximum image height to reach 7mm, achieving miniaturization and a large target surface.
It achieves miniaturized, low-cost telephoto lenses that meet the needs of long-distance monitoring, adapt to different sensor specifications, and satisfy various security monitoring scenarios.
Smart Images
Figure CN120652659B_ABST