Optical beam intensity control system

Details Optical beam intensity control system Optical beam intensity control system

1981-08-28

1984-04-17

Sikes, William L.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250201, G01V 120

Patent

active

044436963

ABSTRACT:
An optical beam intensity control system having a light controller which allows a beam of electromagnetic energy of varying intensity to pass therethrough. A beam splitter directs a portion of the output beam to a detector which provides a signal indicative of the intensity of this beam to a threshold control signal generator. The control signal generator compares the intensity signal with a preselected intensity range and provides a signal indicative of whether or not the intensity of the beam falls within the preselected intensity range. The light controller operates in accordance with the signal from the control signal generator in order to maintain the output beam of the variable beam of electromagnetic energy within the preselected intensity range.

REFERENCES:
patent: 3454775 (1969-07-01), Gibbs
patent: 3778791 (1973-12-01), Lewicki et al.
patent: 3864037 (1975-02-01), Johnson
patent: 4378490 (1983-03-01), Luigi

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