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1952年彩色显象管问世以来,经过40多年不断改进,彩色图象已达到高质量彩色印刷品的水平,像人的头发丝,足球场上的草皮等都能生动清晰地描绘出来。本文介绍起关键作用的几项新技术,使读者对新型高质量彩色显象管有所了解。 1.荧光屏的平面直角化技术 普通的电视荧光屏为弯曲的球面体,球面的曲率半径越大,屏幕越平坦。普通荧光屏的曲率半径为荧光屏对角线的1.8倍,荧光屏四角呈圆弧状过渡。为了改善收看效果和展宽图象面积,近年来出现平面直角彩色显象管,也称FS管。这种管子荧光屏的曲率半径为普通荧光屏的1.5倍以上,屏幕十分平坦。通
Since the advent of the color picture tube in 1952, after more than 40 years of continuous improvement, the color images have reached the level of high-quality color prints, such as the human hair and the turf on the football field. This article introduces several new technologies that play a key role, giving the reader an idea of the new high-quality color picture tube. 1. Fluorescent screen plane right angle technology ordinary TV screen is a curved spherical body, the greater the radius of curvature of the spherical surface, the more flat the screen. Ordinary fluorescent screen curvature radius of 1.8 times the screen diagonal, four corners of the screen transition was circular arc. In order to improve the viewing effect and broaden the image area, in recent years appeared flat right angle color CRT, also known as FS tube. This tube fluorescent screen curvature radius of 1.5 times more than normal screen, the screen is very flat. through