Infrared confocal zoom optical system
By designing an infrared confocal zoom optical system and utilizing a combination of multiple lens groups, the problem of focusing security lenses under different visibility conditions was solved, achieving confocal focusing of visible light and infrared light, and improving the imaging clarity and reliability of monitoring equipment.
CN116165783BActive Publication Date: 2026-07-17成都联江科技有限公司
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 成都联江科技有限公司
- Filing Date
- 2022-12-06
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing security cameras require focusing under different visibility conditions, which affects system reliability and makes it difficult to achieve co-focusing of visible light and infrared light.
Method used
Design an infrared confocal zoom optical system comprising multiple lens groups. By combining fixed and movable groups, visible light and infrared light can be confocalized without separate infrared focusing. The system uses spherical lenses and glass plates to meet optical performance requirements.
Benefits of technology
It enables clear imaging under different visibility conditions, reduces the number of focusing operations, and improves the reliability and detection performance of monitoring equipment.
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Smart Images
Figure CN116165783B_ABST
Abstract
The application discloses an infrared confocal zoom optical system, which comprises a first group, a second group, a third group and a fourth group. The first group comprises a first lens with negative optical power, a second lens with positive optical power and a third lens with positive optical power. The second group is movable along the optical axis direction and comprises a fourth lens with negative optical power, a fifth lens with positive optical power and a sixth lens with negative optical power. The third group is movable along the optical axis direction and comprises a seventh lens with positive optical power, an eighth lens with negative optical power, a ninth lens with positive optical power, a tenth lens with positive optical power, an eleventh lens with negative optical power, a twelfth lens with positive optical power and a thirteenth lens with negative optical power. The fourth group comprises a fourteenth lens with positive optical power, a first flat plate and a second flat plate, so that the optical system can realize visible light and infrared confocal.
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