Light beam scanning device and control method therefor

Details Light beam scanning device and control method therefor Light beam scanning device and control method therefor

1997-12-04

2000-01-04

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2505781, 359305, 359285, 347233, G02F 129

Patent

active

060112565

ABSTRACT:
There are proposed light beam scanning method and device for scanning with plural light beams split by using a multi-frequency acousto-optic device (AOM). By remarkably increasing the number of light beams, an image is recorded at a higher speed. Plural incident light beams are split in the subsidiary scanning direction by different multi-frequency acousto-optic devices. The split light beams are displaced so as not to overlap one another in the subsidiary scanning direction, while respective sets of light beams split by the acousto-optic devices are deviated in a main scanning direction, for scanning. The deviation in the main scanning direction is compensated with a clock timing of an image signal. The light beams split by the AOMs may be alternately positioned in the subsidiary scanning direction. Alternatively, a set of light beams split by one AOM may be adjacent to a set of light beams split by another AOM in the subsidiary scanning direction.

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