| 防辐射长波红外连续变焦光学系统设计 |
| 投稿时间：2022-10-16 修订日期：2022-11-04 点此下载全文 |
| 引用本文：吴海清,谈大伟.防辐射长波红外连续变焦光学系统设计[J].红外,2023,44(2):1~7 |
| 摘要点击次数: 455 |
| 全文下载次数: 320 |
|
|
| 中文摘要:为解决在强辐射环境中使用红外热像仪时由辐射导致其性能退化迅速的技术问题，基于机械正组补偿式连续变焦结构形式，通过在后固定组中引入反射镜来形成折转式光学系统，避免后端探测器直面前方辐射射线。设计了一种工作波段为8～12 μm、F数为1.2、焦距为25～90 mm的非制冷红外连续变焦光学系统。结果表明，该系统结构合理、成像良好，在探测器对应的特征频率42 1p/mm处的调制传递函数(Modulation Transfer Function, MTF)值大于0.2，满足应用需求。加工装调后，经实际成像测试，验证了设计的准确性。 |
| 中文关键词:防辐射 非制冷红外 连续变焦系统 光学设计 |
| |
| Design of Radiation-Proof Long-Wave Infrared Continuous Zoom Optical System |
|
|
| Abstract:In order to solve the technical problem of rapid performance degradation caused by radiation when using an infrared thermal imager in a high-radiation environment, based on the mechanical positive group compensation continuous zoom structure, the reflector is introduced into the rear fixed group to form a folding optical system, to avoid the back-end detector from the front radiation rays. An uncooled infrared continuous zoom optical system with an operating waveband of 8－12 μm, a F-number of 1.2, and a focal length of 25－90 mm is designed. The results show that the system has a reasonable structure and good imaging. The modulation transfer function (MTF) value at the characteristic frequency of 42 1p/mm corresponding to the detector is greater than 0.2, which meets the application requirements. After processing and adjustment, the accuracy of the design is verified by actual imaging test. |
| keywords:radiation-proof uncooled infrared continuous zoom system optical design |
| 查看全文 HTML 查看/发表评论 下载PDF阅读器 |