Bacon & Thomas, PLLC
Voice coil motor type focusing actuator
A voice coil motor type focusing actuator is disclosed to have a fixed unit, a movable unit and two resilient holding members. The fixed unit has a bracket with two slide shafts and a plurality of magnets mounted in the bracket. The movable unit has a lens holder movably mounted inside the bracket and a coil wound around the lens holder. The lens holder has two lugs. Each lug has a through hole for the slide shaft of the fixed unit to insert thereinto. The resilient holding member is fastened between the bracket of the fixed unit and the lens holder of the movable unit. When a current is supplied to the coil, a magnetic force is produced between the coil and the magnets to move the movable unit. When the current stops, an elastic force due to the resilient holding unit is utilized to pull the movable unit back to its original position.
Tricore Corporation
G G H
G02B G03B H02K
inventional inventional inventional
Tien-Chung
Huang