| 摘要 |
television engineering; videophone communication means. SUBSTANCE: optical device has video camera, television set, semitransparent mirror, and shading case; all components are arranged so that pencil beam of light flux penetrating through semitransparent mirror and taken by video camera as well as pencil beam of light flux arriving from television set screen and reflected by semitransparent mirror meet. EFFECT: provision for parties communicating through videophone to see each other. 1 dwg |
