Patent ID: 6784915
Filing Date: 2004-08-31
Classification: G03B

Abstract:
A laser imager for recording an image on an image recording medium, comprising:a) a laser light source emitting a first laser beam; b) a first optical system converting said first laser beam to a second laser beam; c) a reflection type spatial modulator which receives said second laser beam and generates a modulated third beam, said reflection type spatial modulator comprising reflecting ribbons arrayed in parallel and a glass window a small distance away from said reflecting ribbons; and d) a second optical system comprising a focusing lens for focusing said third beam on said image recording medium, wherein said first optical system comprises: a bending element bending said first laser beam to convert said first laser beam to said second laser beam, and an optical axis of said second laser beam incident onto said reflection type spatial modulator forms a nonzero angle &thgr;xz with the normal to the reflection type spatial modulator, whereby interference between first optical reflection at said reflecting ribbons and second optical reflection at said window glass is substantially prevented.