Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1983-07-13
1986-02-11
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250227, G01D 534
Patent
active
045700648
ABSTRACT:
An electric-field measuring apparatus utilizing electrooptic effect for measuring the intensity of an electric DC field includes a material exhibiting both electrooptic effect and photoelectric effect or both a material exhibiting the electrooptic effect and a material exhibiting the photoelectric effect which material or materials are irradiated with a continuous light ray of a wavelength capable of inducing the electrooptic effect and an intermittently interrupted light ray of a wavelength capable of inducing the photoelectric effect.
REFERENCES:
patent: 3708747 (1973-01-01), Lesueur
patent: 4412173 (1983-10-01), Massey
Katsuyama Toshio
Matsumura Hiroyoshi
Nagatsuma Kazuyuki
Suganuma Tsuneo
Hitachi , Ltd.
Hitachi Cable Ltd.
Nelms David C.
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