Beam position control apparatus

Details Beam position control apparatus Beam position control apparatus

1991-01-03

1992-11-03

Gonzalez, Frank

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

G02B 2608

Patent

active

051610469

ABSTRACT:
A beam position control apparatus in which a light beam is led into a light detector from a light generating source through a movable reflector and positioning of the light beam is performed by a servo control circuit for feeding a signal from the light detector back to the movable reflector, comprises: an oscillator for oscillating in response to an initializing signal and moving the movable reflector to move the beam onto the light detector; and a control switch for separating the oscillator and the movable reflector from each other in response to the signal from the light detector, the oscillator and the control switch being arranged in the servo control circuit.

REFERENCES:
patent: 3694558 (1972-09-01), Eisenberg et al.
patent: 4063819 (1977-02-01), Hayes
patent: 4334775 (1982-06-01), Breecher et al.
patent: 4800270 (1989-01-01), Blais
"Applied Optical Electronics Handbook", published by Shokodo Company, Ltd., Apr. 10, 1989.

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