Light source device for close spacing of two light beams

Claim 1

A scanning apparatus comprising: a polarizing beam splitter having a plurality of sides, said beams splitter adapted to include a interference film; first and second semiconductor lasers for supplying light beams, each having major and minor cross-sectional axes and a central ray, to said interference film from first and second sides thereof, respectively, said first and second semiconductor lasers being disposed relative to said polarizing beam splitter so that the respective major and minor cross-sectional axes of the beams are coordinated with each other after passage through said polarizing beam splitter; means disposed in an optical path between said first semiconductor laser and said polarizing beams splitter for rotating the plane of polarization of the incident light beam from said first semiconductor laser by approximately 90 degrees; means positioned between one of said semiconductor lasers and said polarizing beams splitter for varying the direction of the central ray of the light beam supplied from said one of said semiconductor lasers; optical means for imaging the light beams supplied, through said polarizing beams splitter, by said semiconductor lasers, on a light receiving surface; and means for causing relative movement between the light receiving surface and the light beams.