METHOD FOR ASSEMBLING/ADJUSTING OPTICAL PART FOR OPTICAL PICKUP DEVICE, METHOD FOR ASSEMBLING/ADJUSTING OPTICAL PART FOR LASER UNIT, DEVICE FOR DETECTING POSITIONAL DEVIATION OF OPTICAL PART AND DEVICE FOR ASSEMBLING OPTICAL PART

摘要

PROBLEM TO BE SOLVED: To position and mount with high precision and in a short time the relative position between the light emitting point of a semiconductor laser and the light receiving part of a light receiving element and further the position of optical parts such as a grating or a hologram.;SOLUTION: The position of the light emitting point (chip surface active layer) of the semiconductor laser 21 is detected by an adjusting optical system consisting of a microscope 32 and a CCD camera 33 through a polarizing beam splitter 22, and a deviation from a prescribed position is calculated to perform the translational adjustment (positional adjustment in X and Y directions) for the semiconductor laser 21. That is, the semiconductor laser 21 is moved by using an exclusive arm by the positional moving quantity of the semiconductor laser 21 calculated from the position of the light emitting point detected by image processing image pickup data by the CCD camera 33. The semiconductor laser 21 is fixed to a substrate by adhering or soldering after the positional adjustment.;COPYRIGHT: (C)2001,JPO