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1. 发明授权

US3609231A Electron tube manuscript reader 失效
标题翻译：电子管阅读器
公开(公告)号：US3609231A
公开(公告)日：1971-09-28
申请号：US3609231D
申请日：1969-09-29
申请人： AMERICAN OPTICAL CORP
发明人： NAGAO KAZUYOSHI , HIRANO REIJI
IPC分类号： H01J29/38 , H01J31/28 , H04N1/029 , H04N1/00
CPC分类号： H04N1/029 , H01J29/38 , H01J31/28
摘要： A cathode-ray tube for electro-optically reading a moving manuscript. The tube includes a long and thin strip of juxtaposed light-conducting fibers extending through its face with corresponding opposite ends of the fibers disposed internally and externally of the tube envelope. Internal ends of the fibers are coated with a light sensitive electron-emissive material which is surrounded by a layer of electroluminous material. A manuscript moved across the strip of light-conducting fibers externally of the tube is read by scanning the coating of electroluminous material along the length of the strip of fibers with an electron beam produced within the tube. Light from the luminous layer, in passing through the tube face, illuminates the manuscript along the outer face of the strip of light-conducting fibers and light reflected from the manuscript in amounts characterized by the subject matter to be read therefrom is transmitted back into the tube by the strip of light-conducting fibers. The light sensitive electron-emissive material at the innermost ends of the fibers emits a pattern of electrons corresponding to the pattern of intensities of light received thereby. These electrons are collected by a target within the tube and produce an electrical charge in the target which may be used as an electrical reading signal per se or converted into other forms of reading information.

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