摘要
对红外偏振成像的国内外发展现状进行了分析。根据中波红外偏振成像的应用需求,提出了一种中波红外共口径偏振成像系统。该系统由前置共口径和后置分口径成像系统组成。后置分口径成像系统包括四个偏振通道,每个通道上放置不同的偏振元件,这样系统就可以实现全偏振成像。根据所使用的探测器,完成了系统分析与设计工作。设计完成之后,系统的MTF>0.3@17lp/mm。最大RMS光斑直径小于探测器像元尺寸,单个像元能量集中率大于80%。
The development status of the infrared polarization imaging system in China and foreign countries is analyzed. According to the application needs of medium wave infrared (MWIR) polarization imaging, a MWIR polar. ization co-aperture imaging system is proposed. The system is composed of the front co-aperture and the rear sub-ap. erture imaging systems. The rear sub-aperture imaging system includes four polarization channels which adopts dif. ferent polarization components, thus full polarization imaging is realized in the system. According to the used detec. tors, the analysis and design of the system is completed. After the design, the modulation transfer function (MTF) of the system is more than 0.3@17 lp/mm. The maximum root mean square (RMS) spot diameter is less than the size of the detector pixel and a single pixel energy concentration rate is greater than 80%.
作者
焦安霞
JIAO An-xia(Yantai Automobile Engineering Professional College, Yantai 265500, China)
出处
《光电技术应用》
2019年第4期7-11,55,共6页
Electro-Optic Technology Application
关键词
中波红外
偏振成像
光学系统设计
medium wave infrared
polarization imaging
optical system design
