Patent ID: 9742155
Date: 2017-08-22
CPC Classifications: B23K,C21D,F21V,G02B,H01S

Claim:
1. A laser apparatus comprising: a plurality of laser modules each generating a laser line in a working plane, said laser modules being juxtaposed and aligned along their length so that the laser lines generated by the modules combine into a single laser line, wherein each of the laser modules comprises two linear arrays of strips of laser diodes, in which the strips are aligned along their length, each emitting a focused laser beam, the two linear arrays being arranged parallel to each other so that the strips are staggered, two sets of parallel laser beams generated by the two linear arrays of strips, respectively, being merged into the single laser line through a set of mirrors, the linear arrays of strips of laser diodes and the mirrors being arranged so that the two sets of laser beams trace optical paths of the same length before being merged into the single laser line.