Patent ID: 6912182

Claim:
An actuator for an optical pickup apparatus, comprising: an actuator base member including a base portion having a pair of insertion holes, a pair of yoke portions rising up from the base portion, and a pair of magnets each secured to an inner side surface of the yoke portion; a yoke member including a baseplate portion and a pair of yoke rising up from the baseplate portion; a supporting shaft disposed uprightly on the base portion at a position located between the pair of magnets; a lens holder on which an objective lens and coils are attached, the lens holder being provided in such a manner as to be slidable with respect to the supporting shaft in an axial direction of the supporting shaft and to be rotatable about an axis of the supporting shaft; a fixing member for securing the actuator base member and the yoke member; and an ultraviolet activated adhesive for bonding the actuator base member and the yoke member, wherein each yoke of the yoke member is inserted through each insertion hole to define a gap therebetween and the baseplate portion is superposed on the base portion, the baseplate portion and the base portion is secured by the fixing member, and the gap between the insertion hole and the yoke is filled with the ultraviolet activated adhesive so that the yoke's substantial oscillating length, over which the yoke is free oscillatable, becomes same with that of the yoke portion.