Method of driving galvanometer mirror

Details Method of driving galvanometer mirror Method of driving galvanometer mirror

1985-08-14

1987-03-10

Corbin, John K.

G02B 2610

Patent

active

046486852

ABSTRACT:
A sawtooth voltage waveform for driving a galvanometer mirror is applied until the voltage reaches a peak value exceeding a prescribed voltage value at which the galvanometer mirror is angularly displaced through a maximum angle at one stroke end of reciprocating angular movement thereof. The voltage is then changed from the peak value to the prescribed voltage value after the galvanometer mirror has been angularly displaced through the maximum angle. The voltage is kept at the prescribed voltage value for a time interval to attain a desired period of the reciprocating angular movement of the galvanometer mirror. The voltage may be increased along a ramp or reduced along a fall toward the peak value.

REFERENCES:
patent: 4307930 (1981-12-01), Saito
patent: 4329011 (1982-05-01), Mori et al.

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