Photoconductive commutators

Details Photoconductive commutators Photoconductive commutators

1975-04-04

1977-03-01

La Roche, Eugene

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250211R, 250235, 250567, 338 17, H01J 3912

Patent

active

040103765

ABSTRACT:
First photoconductor material interconnecting a plurality of first electrodes with a first common electrode is scanned or swept with a beam of radiant energy to selectively interrogate or address individual ones of the plurality of first electrodes. A second plurality of electrodes may be associated with the first plurality and preferably is interdigitated therewith. Second photoconductor material, preferably being different from the first and having a slower rise time, interconnects associated ones of the first and second pluralities of electrodes so that the electrical resistance therebetween varies as a function of the quantum of radiant energy directed thereon. The second plurality of electrodes are connected either directly, photoconductively or otherwise with a second common electrode.

REFERENCES:
patent: 3082327 (1963-03-01), Rice
patent: 3084301 (1963-04-01), Mohan
patent: 3124635 (1964-03-01), Jones et al.
patent: 3437815 (1969-04-01), Bleicher
patent: 3732424 (1973-05-01), Wojtulewicz

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