| 摘要 |
PURPOSE:To obtain a bright picture by superposing a diffusing material obtained by performing the optical diffusion processing of a transparent thin plate or sheet to the reflection surface of a reflector curved so that the reflection surface is recessed. CONSTITUTION:The reflection screen for projected pictures is formed by superposing the diffusing material 1 having the same shape and size as the reflector 2 curved at a prescribed curvature to the reflection surface of the reflector 2. Both the reflector 2 and diffusing material 1 are adhered as a united body by a transprent bonding agent such as vinyl bonding agent. At the use of the reflection screen, a picture is projected on said diffusing material 1 by a slide projector or the like. In this invention, the factor of light loss is removed and the degree of light deffusion can be reduced, so that a picture on the reflection screen can be controlled extremely brightly. |
