Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-10-18
1991-06-18
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250214R, 340630, G01N 1506
Patent
active
050251694
ABSTRACT:
A sensor in IC formation has a light emitting means, and a light receiving means disposed for receiving a faint pulsed light generated by scattering of light emitted from the light emitting means, in which a switching means capable of short-circuiting between sensor circuit lines is provided for being triggered by a counter means operated in response to an output from the light receiving means, and constituent elements of respective components of the sensor including the said means and capable of being formed in the IC are formed as integrated circuits on a dielectric isolation substrate, whereby electric isolation of the respective elements can be made complete irrespective of light irradiation to realize effective interelement junction and isolation.
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patent: 4555634 (1985-11-01), Muggli et al.
patent: 4654644 (1987-03-01), Dobrzanski
Arakawa Masao
Kami Hironori
Ogawa Masanobu
Terasawa Tomizo
Allen Stephone B.
Matsushita Electric & Works Ltd.
Nelms David C.
Osann, Jr. Edward W.
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