ADJUSTING METHOD OF TILT OF OBJECTIVE LENS OF OPTICAL PICKUP DEVICE, ADJUSTING DEVICE OF TILT OF OBJECTIVE LENS OF OPTICAL PICKUP DEVICE, AND MANUFACTURING METHOD OF OPTICAL PICKUP DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an objective lens tilt adjusting device of which a manufacturing cost can be reduced.;SOLUTION: An adjusting stage 29b is controlled so that light receiving quantity of pixels of a center part O of the image pickup plane is made the maximum in all pixels by irradiating an image pickup plane of an image pickup means with light from a light emitting and receiving element 11. And an objective lens 15 is rotated in the direction of X and Y, and the objective lens 15 is set to a tilt angle at which light receiving quantity of pixels of the center part O is made the maximum out of tilt angles in each direction. Thereby, the objective lens 15 can be set to a correct position at which coma abbration becomes the minimum.;COPYRIGHT: (C)2004,JPO&NCIPI