| 摘要 |
PURPOSE:To obtain a highly luminance screen having no chromatic aberration by arranging a convex lens component and a reflecting surface with a prescribed relation for a video projector screen. CONSTITUTION:A convex lens element 16 and a reflecting film 17 are arranged in front and rear of the screen to prepare the video tape projector. The focus of the lens element on the medium side is fixed so as to be located on the elect image surface position on the surface of the convex lens which is formed by the reflecting surface. Consequently any of incident light R, G, B is reflected under diffusion characteristics distributing the light on the screen surface centering the vertical direction, so that chromatic aberration is prevented and the highly luminous picture can be obtained on an observation position. |
