| abstract |
(57) [Summary] [Object] The present invention has a simple structure and a simple manufacturing method, (EN) A screen having a wide viewing angle, a high reflectance, and a projector having a specific reflection directivity. [Structure] A projection screen which is a hologram that reflects only light incident from a specific direction in a specific direction with a specific viewing angle. [Effect] It is possible to obtain a screen having a high reflectance, a wide viewing angle, and not reflecting other ambient light. |