Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1995-04-19
1996-07-02
Allen, Stephone
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
25037011, 313524, 313532, H01J 3150
Patent
active
055324754
ABSTRACT:
A two-dimensional radiation detecting method and apparatus for converting incident radiation in a two-dimensional distribution into electric signals. The apparatus includes a target structure and an electron beam scan mechanism. The target structure has a fluorescent element, transparent electrodes in stripes and a photoconductive film laminated in the stated order on a substrate. The electron beam scan mechanism has a plurality of linear cathodes, backing electrodes for taking electron beams from a selected linear cathode, a vertically converging electrode, vertically deflecting electrodes, accelerating electrodes and a decelerating electrode. The electron beam scan mechanism simultaneously projects the electron beams distributed horizontally to one horizontal line on the photoconductive film, and then shifts the electron beams vertically, to read a two-dimensional distribution of potentials on the photoconductive film.
REFERENCES:
patent: 3835314 (1974-09-01), Grossel et al.
patent: 5144123 (1992-09-01), Malashanko
patent: 5329116 (1994-07-01), Colditz et al.
patent: 5381000 (1995-01-01), McKee, Jr.
patent: 5483071 (1996-01-01), Oikawa et al.
Oikawa Sirou
Tonami Hiromichi
Allen Stephone
Shimadzu Corporation
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