Patent ID: 8170072

Claim:
A laser annealing apparatus that shapes a laser beam generated by laser oscillation in order to condense the laser beam into a linear beam on a surface of an object to be irradiated, wherein the laser annealing apparatus relatively scans the object to be irradiated with the linear beam in a short axial direction of the linear beam so that the irradiation of the laser beam overlaps each other, and anneals the surface of the object to be irradiated by laser irradiation, wherein the laser annealing apparatus comprises: (a) a plurality of long-axis lens arrays that divide the laser beam into a plurality of first beams in a direction corresponding to a long axial direction of the linear beam; (b) a long-axis condensing optical system that makes the laser beam, wherein the laser beam is divided by the long-axis lens arrays, wherein the long-axis condensing optical system condenses the plurality of first beam in the long axial direction on the surface of the object to be irradiated; and (c) a long-axis lens array moving device that reciprocates the long-axis lens arrays in a direction corresponding to the long axial direction of the linear beam during the laser irradiation.