目前我国数字影院的放映环节中 ,银幕亮度不达标是比较突出的一个问题。为什么数字放映达不到和胶片放映相同的银幕亮度呢 ?这是由其采用的技术所决定的。目前的数字影院使用的是DL P数字放映机 ,其关键部件为三片 DMD芯片 ,每片 DMD上有 1 3 0万个微镜 ,每个微镜的偏转角度为? At present, China’s digital cinema show links, screen brightness is not a more prominent issue. Why digital projection can not achieve the same screen brightness as film projection? This is determined by the technology it employs. The current digital cinema uses a DL P digital projector with three key DMD chips and 13 million micromirrors per DMD, each with a deflection of?