| 摘要 |
964,011. Television. A. B. DICK CO. Jan. 27, 1961 [Feb. 15, 1960], No. 3264/61. Heading H4F. In a photo-electric scanning system utilizing a rotating mirror drum 6 for scanning an object 2 and directing light from the latter on to photo-responsive means 8 a lens 4 is so positioned with respect to the other elements that it is common to the optical paths between the object and the mirror drum and between the latter and the photo-responsive means 8. The object 2, which is illuminated by an intense light source 10, may, together with the lens and the mirror drum also be exposed to general background lighting. The photo-responsive means 8 may comprise a photo-cell or a television camera. |
