Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1977-09-08
1979-05-15
Mullins, James B.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250227, G02B 514
Patent
active
041550056
ABSTRACT:
A fiber optic control system with an electrically isolated control module that regulates the operation of a first and a second electrically operated device. A control module receives light on a fiber optic input cable from a control light source. An adjustable control in the control module provides a light of adjustable intensity from the control light source to a first and a second fiber optic output cable. The intensity of the light to the fiber optic output cables is adjusted by moving a reflective surface to vary the length of the light path. The reflective surface can also be rotated to terminate the light reflected to the fiber optic output cables. The first fiber optic output cable is adapted to convey light from the control module to a signal converter which controls the first electrically operated device in accordance with intensity of the light conveyed by the first fiber optic output cable to the signal converter. The second fiber optic output cable conveys light from the control module to a second signal converter which controls the second electrically operated device in accordance with the light conveyed by the second fiber optic output cable. One of the electrically operated devices is a variable intensity light source and the signal converter controls the amount of illumination emitted by the variable light source which is conveyed by a fiber optic illumination cable to a light emitting nozzle.
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Dowling, Jr. Robert F.
Knowlton Keith L.
Kleinman Milton E.
Mullins James B.
Valtec Corporation
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