红外技术, 2010, 32 (4): 187, 网络出版: 2011-01-05
无调焦非制冷红外光学系统的无热化设计
Athermalization of Uncooled Infrared Optical System Without Focusing Mechanism
摘要
论述了通过景深分析和无热化设计实现无调焦光学系统的原理。基于长波大面阵(640×512)非制冷探测器,设计了同时适应物距变化(15 m~100 m)及温度变化(-55℃~+70℃)的无热红外光学系统,焦距33 mm,F 数1.3。设计结果表明,该系统在宽温度范围内具有良好的消热差性能,并且完全覆盖目标物距范围,从而实现了无调焦的要求,提高了系统操作性和可靠性。
Abstract
The theory of optical system without focusing mechanism based on the depth of field and athermalization is discussed in this paper. An athermal optical system working under temperature of -55℃~+70℃ and object distance of 15 m~100 m is designed on long-wavelength uncooled infrared detector (640×512). The EFFL is 33 mm, and the F number is 1.3. Results proved that this system posses good athermal ability in wide temperature range , and meet the requirements of object distance. Consequently,this system reached good image quality without focusing mechanism, the operatability and reliability have been improved.
崔莉, 赵新亮, 李同海, 田海霞, 吴海清. 无调焦非制冷红外光学系统的无热化设计[J]. 红外技术, 2010, 32(4): 187. CUI Li, ZHAO Xin-liang, LI Tong-hai, TIAN Hai-xia, WU Hai-qing. Athermalization of Uncooled Infrared Optical System Without Focusing Mechanism[J]. Infrared Technology, 2010, 32(4): 187.