Method and device for optical beam synthesis

Abstract

Abstract PURPOSE:To obtain a beam of a high optical power by synthesizing plural optical beams with a holography diffraction grating. CONSTITUTION:Optical beams 2a-2d emitted from four spot light sources 1a- 1d which consist of laser diodes or light emitting diodes and are practically monochromatic are converted to parallel optical beams by collimator lenses 3a- 3d respectively. Directions of these optical beams are adjusted by optical beam direction adjusting prisms 4a-4d so that they are multiplexed and made incident on the same area of a holography diffraction grating 5. A synthesized optical beam 6 is obtained by diffraction due to the holography diffraction grating 5. The optical beam 6 obtained in this manner is deflected in a prescribed angular velocity by an optical deflector 7 and passes a scanning lens 8 consisting of an f.theta lens or the like and is scanned on a recording medium 9.

Inventors

• 👤 Masaru Noguchi
• 👤 勝 野口

Bibliographic Details