Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1987-10-21
1989-12-26
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250578, H01J 4014
Patent
active
048899844
ABSTRACT:
A radiation detector for use in a system for determining the centroid of an image incident thereon comprises an array of photodetector elements formed on a substrate and electrically connected, preferably by selective metallization to form desired groups of elements, each group having a single output means, whereby the centroid of an image on the detector may be deduced.
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patent: 3900716 (1975-08-01), Kawabata et al.
patent: 3971003 (1976-07-01), Kosonocky
patent: 4081841 (1978-03-01), Ochi et al.
patent: 4541015 (1985-09-01), Itoh et al.
patent: 4695158 (1987-09-01), Kotaka et al.
British Aerospace Pubic Limited Company
Nelms David C.
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