公开(公告)号：US4880292A

公开(公告)日：1989-11-14

申请号：US222797

申请日：1988-07-22

申请人： Hitoshi Kageyama ,  Toshikazu Suzuki ,  Keijiro Sakamoto ,  Tetsuo Kyogoku ,  Masayuki Nino

发明人： Hitoshi Kageyama ,  Toshikazu Suzuki ,  Keijiro Sakamoto ,  Tetsuo Kyogoku ,  Masayuki Nino

IPC分类号： G03B21/62

CPC分类号： G03B21/625

摘要： A light-transmission viewing screen for displaying an optical image from a beam of light projected thereon along a predetermined path of light provided rearwardly of the screen, the viewing screen having a virtual center axis extending toward a viewer's viewing position, the light-transmission viewing screen comprising a transparent or translucent transmission screen plate through which to transmit the beam of light, and a transmission grating located on at least a portion of one of the surfaces of the transmission screen plate for diffracting the beam of light toward a location substantially aligned with the virtual center axis of the viewing screen when the beam of light is transmitted through the transmission grating.

摘要翻译： 一种透光观察屏幕，用于沿着从屏幕的后方沿着预定的光路投射的光束显示光学图像，观看屏幕具有朝向观看者的观看位置延伸的虚拟中心轴，透光观察 屏幕，其包括用于透射光束的透明或半透明透明屏板，以及位于透射屏板的一个表面的至少一部分上的透射光栅，用于将光束衍射到基本上与 当光束通过透射光栅传播时，观察屏幕的虚拟中心轴线。