Shimmer Like The Intensifier Screen Parameter Testing Techniques

LLL image intensifier is one of the most important kind of night vision photoelectric image device at present, and it is used widely in many fields such as LLL night vision, optical radiation measurement, camera device and so on. fluorescent screen is an important parameter of the image intensifier. In this dissertation, the attention is focused on the measurement technology about the fluorescent screen parameter of the image intensifier. The content in this dissertation is summarized as following:In the first chapter, the development and application of photoelectric image and LLL night vision are reviewed. The intention and signification are expatiated.In the second chapter, the principle, characteristics, types and parameters of LLL image intensifier are introduced. The measurement principle and methods about fluorescent screen parameter are emphasized.In the third chapter, the general structure, mechanical structure,the power supply of electronic gun,the subsystem of electric control are developed and analyzed.D/A clip and high voltage power supply,A/D clip and the module of deal with the signal,relay clip and the vacuum system, lighteness counter,luminous flux testing apparatus and communicate clip are particular introduced.In the fourth chapter, testing software is compiled after finishing the hardware develop.the interface of the testing system about the fluorescent screen parameter is compiled in dialog box fashion using VC++ language. Compiling the programme of D/A clip to supply telecontrol voltage for the high voltage power supply. Compiling the programme of A/D clip to collect the current of screen and transform into digital signal. Compiling the programme of relay clip to control the vacuum system. Compiling the programme of lighteness counter to test the lighteness and transfer into the computer.The last chapter summarizes the whole dissertation, and pointes out the problems in the research that should be improved.