Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1989-09-11
1990-10-02
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
313389, H01J 3150, H01J 2988
Patent
active
049609874
ABSTRACT:
An x-ray image intensifier for use in an x-ray diagnostic system has an electrode system for focusing electrons generated by incident x-radiation on an input luminescent screen onto an output luminescent screen. For reducing manufacturing and assembly costs, the electrodes of the electrode system are applied as a coat on the inside of a one-piece sheet metal part which forms the wall of the x-ray image intensifier between the input and output luminescent screens. The coat is adapted in shape as needed to form the electrodes, and the sheet metal wall, with the electrodes thereon, has different diameters along its longitudinal length matched to the required electrode diameters.
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patent: 3225204 (1965-12-01), Schagen et al.
patent: 3417242 (1968-12-01), Windebank et al.
patent: 3688146 (1972-08-01), Bouwers
patent: 4169239 (1979-08-01), Ehata et al.
"Insulating Aluminumoxide Films," Mohr et al., IBM Technical Disclosure Bulletin, vol. 6, No. 3, Aug. 1963.
"Das Roentegenfernsehen," Gebauer et al., 1974, pp. 54-57.
Beck George
Nelms David C.
Siemens Aktiengesellschaft
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