LENSE DRIVING APPARAUTS OF OPTICAL PICK UP

摘要

The apparatus for improving structure of tracking coil to make accurate servo includes tracking coils attached on the driving device, a permanent magnet forming the magnetic circuit, and a driver moving the object lens of the optical pickup. A pair of inner yoke assemblies are placed both sides of the driving device and the tracking coils are wound on the front, back, and a part of one side of the inner yokes. Then the current flows through the vertical front side of the inner yokes and the apparatus moves towards the tracking direction.