| 摘要 |
PROBLEM TO BE SOLVED: To provide the actuator of an optical pickup device which has shifted the resonance frequency of a yoke to a high frequency range where neither a focusing function nor a tacking function is influenced by increasing the fixation strength of the yoke to an act base member. SOLUTION: This actuator has a couple of yoke parts 3 raised from a base body part 2 and a magnet 4 which is fixed to the internal surface of each yoke part 3 and is equipped with the act base member 1 which is fitted to a main base member, a yoke member 11 characterized by that a substrate part 12 is put over the reverse surface of a base body part 2 by inserting a couple of yokes 13 raised from the substrate part 12 into insertion holes 19 of the base body part 2, at least part of the substrate part 12 nearby the yokes 13 is joined with the base body part 2 with an adhesive 16, and the substrate part 12 is fixed to the base body part 2 with a plurality of fixing screws 28, and a support shaft 8 which is stood on the base body part 2 and fitted rotatably and slidably to a lens holder 20.
|
