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把阴极射线管的显示用照相下来,再用胶片投影。可以得到较高的亮度和较好的图象质量。这种技术可以做到接近商业影片的质量。这种类型的技术在专用的军事显示方面用的较多,商业方面还没有用上。在北美防空指挥和控制系统(NORAD)的大集体显示是这种投射系统的典型例子。它用三种原色投射,综合成七种不同的颜色。计算机发出每一种原色的信息轮流地在阴极射线管上显示出来,用3 5毫米的胶卷连续地照下来,胶卷在14 秒钟以内
The cathode ray tube display with the camera, and then film projection. Can get higher brightness and better image quality. This technology can be close to the quality of commercial films. This type of technology is used more in dedicated military displays and has not been used commercially. The large collective display of North American air defense command and control (NORAD) systems is a prime example of such a projection system. It is projected in three primary colors and synthesized into seven different colors. The information that the computer sends out for each primary color is displayed in turns on the cathode ray tube, continuously illuminated with 35 mm film, and the film is within 14 seconds