Research On System Of Low-light Level Stress Source

Night vision technology has very important position in Modern Warfare. Weapon with night-vision units can be used on ground, naval and air forces. Therefore, advanced night vision technology has significant meaning on controlling the warefore situation. In order to evaluating the system reliability of a night vision system scientifically as well as objectively, the reliability test on variable situation is requested according to the "reliability testing section". It not only request the research on the reliability testing equipment of night vision viewer, but also request the research on the interrelated testing technology. The low-light level stress source study is the primary content in it.According to the reliability testing section, the low-light-level(LLL) stress source system can provide a scientifical and reliable environment for the testing system. So, testing of the LLL night vision viewer performance can be reliazed much closer to the night environment. Therefore, the study of the glimmer stress must be carried out as well as the glimmer stress source system's light stress exerts and monitors. So that we can test the reliability of the related night vision device to guarantee our army night vision equipment quality.Acordding to the research on the reliability test of the LLL night vision device, the overall layout of the LLL stress source is given in this article. And the illuminance of it is calculated in detail. The integrated sphere light source model is established based on the Monte Carlo method. Illuminance distributed uniformity of the integrated sphere is simulated and the exit illuminance distributed result has gotten. Detecting and controlling of the light stress has completed. The corollary module is designed. The analysis and design of the large field collimator tube is accomplished. Transmission resolusion plate is adopted in the LLL channel. The condition in keeping with the nature LLL is obtained through large actual measurement and theoretical analysis. Sharing-light-source radial layout is adopted in the integrated sphere LLL stress source. It can satisfy the testing request of new type LLL night vision device easily. It can provide the reliability test for four LLL night vision devices simultaneously. The contrast of the four results is easy to complete.The reliability measuring equipment of LLL night vision device passed near 2000 hours test. The test result indicated, the stress source system design is scientific and reasonable. It has provided the quality assurance for LLL night vision device's range testing. The work has great project application value.