Research On Reliability Testing System Of Low-Light Sights Under High And Low Temperature Environments

As one of the important fighting equipments, Low-light sights is aim to target and observe for weapons at night. Low-light sights reliability detection is beneficial to design and produce products of high-quality, high stability. The traditional detection system consists of optical stress subsystem and electrical stress subsystem. Based on the actual application environment of low-light sights, thermal stress subsystem is proposed,which could make more comprehensive low-light sights reliability detection.On the basis of the demand of the project and my professional skills, this paper do some work for optical stress subsystem and thermal stress subsystem. The illuminance of the exit window in the integrating sphere is compared by deducing the basic principles of integrating sphere; Design parameters of beam collimator are definited by the analysis of the detection system, it is designed by Zemax, and the result of simulation is feasible; we ascertain the parameters of CCD camera; According to the need of reliability detection system, the power supply and monitor system are analyzed. To the thermal stress subsystem, we design various components of the high-low temperature chamber; The cooling mode is selected, and some parameters of the cooling system are calculated.Finally, the designed integrating sphere is tested, and its illuminance meets the index. In addition, the impact of various factors on the COP in the thermal stress subsystem is analyzed by experiments.