Remote Sensor Lens Design Based on the Matching of Materials

Abstract

Thermal characters matching optimization of the remote sensor lens materials determinates the thermal adaptive faculty of the sensor, therefore become the most important influencing factor which will decide whether the sensor can work. This paper analyzed profoundly the change of the material’s thermal parameters caused by the working temperature variation, and studied the principles and application of the athermalization manners, whose advantages and disadvantages are also exposited. Formulas are listed to illustrate the principle of the athermatilization which is realized through the reasonable matching of different materials. Design example is represented, athermatilization is achieved through the reasonable matching of optical and mechanical compensation, utilizing the difference of thermal characteristics between different materials, the design and thermo-optical analysis result are also given in the paper, the advantage of the system is the stability in the wide temperature which has no use for groupware to adjust the position of detector .Key words: materials, thermal characters, remote sensor, athermatilization, optical and mechanical compensation