| 摘要 |
PURPOSE:To obtain a color picture with high resolution, by providing a black- and-white CRT to which red, green and blue primary signals are sequentially applied switchingly, a magnification lens on a CRT fluorescent screen and an electronic shutter selectively contrlling color filters. CONSTITUTION:A CRT1 to which red, green and blue color primaries signals ER, EG, and EB are sequentially applied at each prescribed period through switching, a lens 2 to magnify a picture obtained on a fluorescent screen 1a of the CRT1, a color filte 4 arranged near a peeping hole 3 and having red, green and blue color primaries filters FR, FG and FB, and an electronic shutter 5 where the light image of the picture obtained on the screen 1a corresponding to the signals ER, EG and EB applied to the CRT1 passes through the filters FR, FG and FB selectively, are provided. Thus, the observer 6 can observe a color picture SC on a prescribed position l with high resolution. |
