Patent ID: 6819861
Filing Date: 2004-11-16
Classification: G02B,H01S

Abstract:
A beam collecting device comprising:a semiconductor laser array having a plurality of laser emitting parts which are arranged in fast and slow axis directions in a plane normal to the traveling direction of emitted laser beams, each for emitting a laser beam of an elliptical cross-section which spreads in said fast and slow axis directions as it travels, said laser emitting parts being grouped into plural groups separated in said slow axis direction; and a laminated optical waveguide array composed of a plurality of optical waveguides arranged in said slow axis direction to be in alignment respectively with said plural groups, each of said optical waveguides being provided with beam collecting means at an incidence surface thereof for collecting laser beams emitted from said laser emitting parts of each group in said fast axis direction toward a predetermined position thereby to emit the collected laser beams from an emission surface thereof.