Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1991-02-14
1992-07-07
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
358482, H01J 4014
Patent
active
051285320
ABSTRACT:
A photosensor having an electrically insulating, translucent substrate; an opaque conductive layer formed on the substrate; and insulating layer formed on the conductive layer, and a semiconductive layer formed on the insulating layer for receiving light and providing a current corresponding thereto. A pair of electrodes are formed in contact with the semiconductor layer and define a light receiving window therebetween. The electrodes are formed so as to not substantially overlap the conductive layer. The conductive layer is supplied with a bias voltage corresponding to a polarity and an amount of carriers defining the current of the semiconductor layer and a voltage Va of a small absolute value during a non-reading period of the photosensor.
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patent: 4583002 (1986-04-01), Kondo et al.
patent: 4621275 (1986-11-01), Ueno et al.
patent: 4650984 (1987-03-01), Furushima et al.
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patent: 4916304 (1990-04-01), Itabashi et al.
Gofuku Ihachiro
Itabashi Satoshi
Saika Toshihiro
Canon Kabushiki Kaisha
Nelms David C.
Shami K.
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