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这种新型的彩色电视光阀投影器包括:在密封真空管内部的受控变形液膜以及电子枪,一个外光源和投影物镜。它被用于诸如模拟,娱乐活动以及控制中心的大屏幕彩色电视中。这种型式的光阀投影器的不断发展导致了鉴别率、密封光阀寿命、较高的电视线标准,以及较高亮度等方面的改善。在彩色电视和黑白电视中,鉴别率的增加是由于精密光学技术的应用和利用了“光栅”调制器的新概念。密封光阀的寿命已由于阴极射线管、离子泵和液体的改进而延长到6500小时以上。单色光阀在1029条电视线标准下的操作己经完成,而且看来单枪彩色投影器推进到这一界限的前景良好。最近的实验表明了利用附加的变形透镜和将“扁”画幅的图形信号供给投影器,以产生彩包或单色的“大屏幕”画幅的现实性。将讨论这些投影器在模拟和其它方面的应用。
The new color television light valve projector includes a controlled deformable liquid film inside the sealed vacuum tube and an electron gun, an external light source and a projection objective. It is used in large-screen color TVs such as analogue, entertainment and control centers. The continuous development of this type of light valve projector has led to improvements in discrimination, sealed light valve life, higher TV line standards, and higher brightness. In color television and black and white television, the increase in discrimination is due to the application of precision optics and the new concept of “grating” modulators. The life of sealed light valves has been extended to more than 6,500 hours due to improvements in cathode ray tubes, ion pumps and liquids. The operation of the monochromatic light valve under the 1029 TV line standard has been completed and it appears that the prospect of a single gun color projector advancing to this limit is good. Recent experiments have demonstrated the utility of using additional anamorphic lenses and supplying a “flat” picture signal to the projector to produce a “big screen” picture frame in color or monochrome. These projectors will be discussed in simulation and other applications.