Light beam deflector

Details Light beam deflector Light beam deflector

1988-01-19

1989-10-10

LaRoche, Eugene R.

G02F 111

Patent

active

048727466

ABSTRACT:
A light beam deflector according to the present invention comprises an acousto-optical element for deflecting a light beam at an angle of deflection which is dependent on the frequency of a drive signal applied thereto. This acousto-optical element has a deflection efficiency which is also dependent on the frequency of the drive signal. The frequency-dependence of the deflection efficiency is corrected by modulating the drive signal in amplitude with predetermined modulating data which are stored in the form of digital data and used to correct the characteristics so that the deflection efficiency of the acousto-optical element is substantially independent of the frequency of the drive signal.

REFERENCES:
patent: 4367926 (1983-01-01), Hohki

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