一种用于可见光成像的无热化镜头
By optimizing the design of the double Gaussian structure and high refractive index materials, the athermalized lens solves the problems of complex lens structure and high cost, achieving high-quality imaging effects over a wide temperature range with high cost performance.
CN121613593BActive Publication Date: 2026-07-17BEIJING INST OF ENVIRONMENTAL FEATURES
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF ENVIRONMENTAL FEATURES
- Filing Date
- 2025-12-08
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing athermalized lenses have complex structures and high costs, making it difficult to reduce costs and maintain imaging stability under high-quality imaging conditions.
Method used
The athermalized lens is designed with an optimized double Gaussian structure and high refractive index materials. It uses glass spherical lenses, with lenses spaced apart and four types of lens materials. A temperature compensation structure is designed to reduce the deviation of optical parameters caused by temperature changes.
Benefits of technology
It maintains high-quality imaging within a temperature range of -40℃ to 60℃, has low lens cost, high cost-effectiveness, MTF greater than 0.3, and can be matched with 3.45μm detector pixels.
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Smart Images
Figure CN121613593B_ABST
Abstract
本发明涉及一种用于可见光成像的无热化镜头，涉及光学元件领域，包括沿光线传播方向依次分布的物侧面为凸面的第一透镜、物侧面为凸面的第二透镜、物侧面为凸面的第三透镜、物侧面为凹面的第四透镜、物侧面为凸面的第五透镜、物侧面为凸面的第六透镜和物侧面为凸面的第七透镜，所有透镜均为玻璃球面透镜，所有透镜除第四透镜与第五透镜胶合外其余相互间隔布置，第七透镜光线输出端侧设有成像侧，本发明具有能够使光学系统以较低的成本，在宽温度范围无需补偿机构即可实现高质量清晰成像的优点。
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