Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1975-01-22
1976-11-23
La Roche, Eugene
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250235, 350269, 356 93, 356 97, G01J 342
Patent
active
039939014
ABSTRACT:
In a spectrophotometry system, apparatus for modulating radiation in fixed phase relationship with an oscillatory electric signal, comprising a radiation interrupting member connected to an armature torsionally mounted in a magnetic field generated from said oscillatory signal.
REFERENCES:
patent: 1523149 (1925-01-01), Wheeler
patent: 2934647 (1960-04-01), Blake
patent: 3068746 (1962-12-01), Vawter
patent: 3518002 (1970-06-01), Barringer et al.
patent: 3609485 (1971-09-01), Dostal
patent: 3853407 (1974-12-01), Dewey, Jr.
Drumheller Ronald L.
La Roche Eugene
Pye of Cambridge Ltd.
Trifari Frank R.
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