| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical pickup device where a fixation-adjusting operation of an objective lens to a lens holder is simply performed.SOLUTION: A flat portion 5a is provided at the periphery of a mounting hole 5 into which the objective lens 1 is inserted. At the positions in the flat portion 5a which are symmetrical with respect to the center of the optical axis of the objective lens 1, a pair of adjusting projection parts 8a and 8b where the flange 1a of the objective lens 1 is to be placed is provided. The objective lens 1 is rotated and displaced with the adjusting projection parts 8a and 8b as supporting points, and the flange 1a is adhered to the lens holder 3 while the objective lens 1 is rotated to an optimal mounting position. |
