Light scanning system
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United States of America Patent
Stats
-
Jan 13, 2004
Grant Date -
Jun 19, 2003
app pub date -
Sep 25, 2002
filing date -
Sep 27, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A light scanning system causes a light spot to scan a surface at a constant speed. The light scanning system includes a light source radiating a light bundle, a deflector which deflects the light bundle, a line image imaging optical system which images the light bundle on a deflecting surface of the deflector as a line image, and a scanning/imaging optical system which images the deflected light bundle on the surface as a light spot. The scanning/imaging optical system consists of a first aspheric mirror which is symmetric with respect to an axis of rotation and is disposed on the light inlet side and a second aspheric mirror which is anamorphic and is disposed on the light outlet side. The first aspheric mirror has a negative power in the light deflecting direction and the second aspheric mirror has a positive power in the light deflecting direction.
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