“自制127～254cm大屏幕彩色投影电视机”一文在本刊今年第8期发表后,引起很多发烧友浓厚兴趣,纷纷来信询问自制彩投的有关问题,现解答如下: 1.自制彩投的关键部件是彩色液晶光阀屏,这是至关重要的部件,必须采用高透光度和高分辨率的产品,才能保证获得层次分明、颜色鲜艳的图像效果。若家庭观看,由于住房面积所限,一般投影尺寸限127～152cm,液晶光阀屏的有效像素能保证12 “Self-made 127 ~ 254cm large screen color projection TV” article published in the eighth issue of this year, aroused a great interest in many enthusiasts, have a letter asked about the problems related to self-made color cast, the answer is as follows: 1. The key to homemade color cast Part is a color liquid crystal light valve screen, which is a vital component, must be high transmittance and high resolution products, in order to ensure a clear, colorful image effect. If the family to watch, due to limited housing area, the general projection size limit 127 ~ 152cm, the effective pixel LCD screen can guarantee 12