Patent ID: 6229639
Filing Date: 2001-05-08
Classification: G03F

Abstract:
A laser lithography system comprising:A) a plurality of lasers;B) a plurality of exposure systems;C) a laser beam multiplexer comprising a plurality of mirror devices each mirror device comprising;1) a multi-reflectance mirror comprising a plurality of reflecting surfaces, each surface having a different reflectance;2) an adjusting mechanism for positioning one of said reflecting surfaces to intersect a laser beam from at least one of said plurality of lasers and reflecting at least a portion of said beam toward at least one of said plurality of exposure systems;wherein laser light produced by each of said plurality of lasers is directed to said laser beam multiplexer where portions of the laser light within each beam is reflected or transmitted by one or more of said plurality of reflecting surfaces, the reflecting surfaces being positioned by said adjusting mechanism so that each of said plurality of exposure systems receives laser pulses produced by one or more of said plurality of lasers.