Patent ID: 9709810
Date: 2017-07-18
CPC Classifications: G02B

Claim:
1. A line beam system, comprising: a plurality of spaced-apart single-emitter diode lasers, each configured to emit a corresponding laser beam along a respective emitted beam axis; a coherence-reducing optical system situated to receive the laser beams and establish an optical path length difference among the laser beams so as to produce a reduced coherence beam; and a line beam optical system situated to receive the reduced coherence beam and to direct a line beam to a target; wherein the coherence-reducing optical system includes a light guide having a longitudinal axis that is situated at selected respective asymmetric incidence angles with respect to opposite marginal emitted beam axes at a light guide input aperture so as to asymmetrically receive the emitted beam axes, the light guide producing the coherence-reduced output beam based on path length differences in the light guide and the asymmetric incidence angles.