一种长焦距大靶面中波红外连续变焦镜头
By employing a nine-lens structure and a nonlinear design, the mid-wave infrared continuous zoom lens solves the volume and aberration problems of existing optical systems with large zoom ratios and long focal lengths. It achieves efficient imaging and detector adaptation over a wide temperature range, meeting the needs of long-distance thermal imaging and target recognition.
CN121578490BActive Publication Date: 2026-07-17HUBEI JIUZHIYANG INFRARED SYST CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI JIUZHIYANG INFRARED SYST CO LTD
- Filing Date
- 2025-12-31
- Publication Date
- 2026-07-17
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Figure CN121578490B_ABST
Abstract
本发明公开了一种长焦距大靶面中波红外连续变焦镜头，包括沿光轴从物方至像方依次设置的第一前固定组透镜、第二前固定组透镜、第三前固定组透镜、变倍透镜、补偿透镜、后固定组透镜、第一后组透镜、第二后组透镜、第三后组透镜；其中，第一、第二、第三后组透镜之间距离固定；通过令变倍透镜和补偿透镜在光轴上前后移动实现连续变焦，并通过第一、第二、第三后组透镜整组在光轴上前后移动实现变焦时成像的热差消除。本发明通过变倍透镜和补偿透镜在光轴上前后移动实现连续变焦，并通过距离固定的第一后组透镜、第二后组透镜、第三后组透镜整组在光轴上前后移动，实现变焦时成像的热差消除，使得镜头在‑40℃～+70℃温度范围内具有良好的成像质量。
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