今年美国政府和工业部门的买主准备在大屏幕显示系统(LSDS)上花费2亿多美元。这些系统最适宜信息显示,它可用于许多场合,如会议室、训练中心、命令与控制中心以及音乐厅等。实际上,现今所有LSDS中都是用电视作为它们的主要投影源。因此这种装置的亮度和对比度限制有很大关系。虽然现在正在 Buyers in the U.S. government and industry this year are set to spend more than $ 200 million on the big screen display system (LSDS). These systems are the most suitable information display, it can be used in many occasions, such as conference rooms, training centers, command and control centers and concert halls. In fact, all LSDS today use television as their main source of projection. Therefore, the brightness and contrast of this device have a great relationship. Although it is now