ACTUATOR FOR OPTICAL PICK-UP

摘要

PURPOSE: An actuator for an optical pick-up is provided to simplify the configuration of the actuator and reduce the weight of the actuator while having excellent sensitivity. CONSTITUTION: An actuator for an optical pick-up includes a base(10) to which a holder(11) is fixed, a bobbin(20), a support(13), and a magnetic circuit. The bobbin has a plurality of holes(21,25) for setting a plurality of objective lenses(31,35) for recording and/or playing of optical disks having different recording densities at different heights. One end of the support is combined with the bobbin and the other end is combined with the holder to support the bobbin. The magnetic circuit drives the bobbin in a focus direction and track direction. The plurality of holes are arranged in a direction corresponding to the radius direction of the optical disks.