投影机的三种主要显示技巧(国外英文资料).docVIP

投影机的三种主要显示技术(国外英文资料) Three main display technologies of the projector 1, the CRT (Cathode Ray Tube, a Cathode Ray Tube) projector three shots As imaging devices, CRT is one of the earliest and most widely used display technologies. The CRT projector is the granddaddy of the projector. The CRT projector is also called a three-gun projector, which works in the same way as the CRT monitor, with the source and imaging of the CRT. Working characteristics of the CRT projector, LCD and DLP projector there are essential differences between, it is by itself, the input signal is decomposed in R (red), G (green) and B (blue) three CRT tube screen, glow fluorescent powder under the action of high pressure, amplification, convergence, on the big screen showed the color images. CRT projectors have high resolution, good contrast, high color saturation, strong signal compatibility, and mature technology. In terms of brightness, CRT projectors are much lower, so far, its brightness values always wandering under 300 lumens, at the same time, the CRT projector complex operation, especially the convergence adjusting trival, fuselage, large volume, only suitable for installation in the ambient light is weak, relatively fixed place, should not be moved. So while there was a boom in the development of the projector market, the CRT projector applications are very few now, and the market for the pre-projector is largely out of the picture. Liquid Crystal Display, LCD projector LCD display technology is one of the dominant technologies in the current projector market, the liquid crystal has active liquid crystal body and inactive liquid crystal body. Non-reactive liquid crystal reflected light, commonly used in notebook computer, film projector. The active liquid crystal is transparent and is made into LCD LCD panel, which is used on the projector. LCD projectors are divided into LCD panels and liquid crystal light valves, and our usual projectors are LCD panels. A, the LCD projector LCD pa