Compensation of the temperature environmental influence in an optical system of thermal imaging device

Optical-electronic systems (OES) are used under conditions of wide range of environment temperatures. Conse-quently, compensation of the temperature influence of environment (thermal aberrations) in modern OES is one of the main tasks. Appearance of the thermal aberrations is caused by the temperature influence of environment on op-tical components and elements of construction of OES. Different methods of compensation of the thermal aberra-tions are considered in this paper. Optical system of a thermal imaging device is presented in the paper. The optical system developed at the Novosibirsk Branch of ISP SB RAS "TDIAM" operates in a wide range of environment temperatures (from -50°С up to +50°С). The optical system of the thermal imaging device, its main parameters and technical characteristics are given in the paper as well as evaluation of its image quality. The method of compensa-tion of the thermal aberrations caused by the temperature influence of environment is considered in the article.