Patent ID: 6516011
Filing Date: 2003-02-04
Classification: G02B,H01S

Abstract:
Apparatus for collimating laser beams from a pair of laterally displaced stacks of laser bars, comprising:a stack of interleaved, substantially identical plates having a plurality of edges, one edge of each of said plates being a beam entrance surface, another edge of each of said plates being a beam exit surface, and a further edge of each of said plates being an alignment edge for said stack, each said further edge being in plane alignment in said stack, said beam exit surface of each plate being disposed to refract laser beams in a direction opposite to that in which laser beams are diffracted by the plate's entrance surface so that beams from successive ones of said exit surfaces lie in the same plane thereby overcoming the lateral displacement of said laser beams from said laterally displaced stacks of laser bars.