LIGHT GUIDE BASED OPTICAL SYSTEM FOR LASER LINE GENERATOR

摘要

PROBLEM TO BE SOLVED: To provide a laser line generator system that includes an optical system for efficiently and cost-effectively collecting and homogenizing coherent light such that the homogenous light forms a line illumination pattern on a target illumination plane.SOLUTION: A laser line generator system utilizes a light guide element 120 to convert coherent lights L1 to L4 generated by a laser diode bar 101 into homogenous lights, and utilizes one or more slow-axis relay lenses 130 to image the homogenous light such that it forms a homogenous line illumination pattern on an illumination plane. The light guide 120 utilizes parallel or down-tapered side walls 123-1 to 123-2 to mix received coherent lights L1 to L4 in the slow-axis SA direction by way of total internal reflection. A Keplerian telescope including two cylinder lenses is optionally used in place of the slow-axis relay lens 130. Optional fast-axis lenses are used to assist in focusing the homogenous light at the illumination plane.SELECTED DRAWING: Figure 1