Multi-beam scanning apparatus

Details Multi-beam scanning apparatus Multi-beam scanning apparatus

1998-01-16

1999-08-10

Spyrou, Cassandra

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359201, 359212, 347137, 347243, G02B 2608

Patent

active

059367555

ABSTRACT:
A multi-beam scanning optical apparatus of the present invention which is a multi-beam scanning apparatus which forms an image on a scanned surface via a plurality of laser beams, the laser scanning device has, a light source emitting a plurality of laser beams, a modulation device capable of switching the respective modulation frequencies of the laser beams, a deflection device deflecting the laser beams, capable of switching the scanning cycle of the laser beams, an axially symmetric optical system changing the distance among the laser beams on the scanned surface relative to a direction perpendicular to both an optical axis of the laser beams and a scanning direction by inserting itself into the optical path of the laser beams and a moving device inserting said axially symmetric optical system into the optical path.

REFERENCES:
patent: 4390235 (1983-06-01), Minoura
patent: 4393387 (1983-07-01), Kitamura
patent: 5002375 (1991-03-01), Komplin et al.
patent: 5469290 (1995-11-01), Maeda

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