The Exact Light-Adjusting Technology Of The High Frame Frequency CCD Camera

According to the difficulty and characteristic of the laser communication, this article brings forward a new feasible solution for optical communication in atmosphere.The energy flashing and spot excursion of beacon laser caused by atmosphere turbulence is always the most difficult, especially in the laser communication. So that this paper details the dynamic light-adjusting principle of high frame frequency CCD camera based on liquid crystal. Compared with mechanical and electronic shutter, it proves the feasibility of dynamic exact light-adjusting technology based on liquid crystal.At last, it presents the principle block diagram, data and result of experiment, and draws aconclusion: the dynamic light-adjusting technology based on liquid crystal can overcome the energy flashing and spot excursion of beacon laser caused by atmosphere turbulence, to ensure relative stabilization of laser spot energy and center of mass detected by photoelectric detector, thereby it ensures the channel for the laser communication in atmosphere.In sum, it is pointed that liquid crystal can compose a new type dynamic optics module with flexible adjusting, and have wider application foreground in space optical communication system.