Light source for laser printer, scanner, copier, facsimile, bar=code reader etc. - includes semiconductor laser array and beam limiter and has row of holes in thin sheet secured to fixing plate for beam emissions with spacing corresp. to inter-laser distances

摘要

The semiconductor lasers (130) fixed to a transverse support (200) have their p-n junctions oriented in the same direction so that parallel beams (105) emerge from collimator lenses (135). The beams are limited by a thin sheet (122) in which holes (120) are arranged in a row at uniform spacing corresp. to that of the lasers. Screws or pins (90) on a fixing plate (300) enter holes (202,204) in the support for indirect fixing to the sheet. ADVANTAGE - A number of beams with uniform optical power are emitted at predetermined spatial intervals.