Patent ID: 6445674
Filing Date: 2002-09-03
Classification: G11B

Abstract:
An optical head apparatus comprising:a biaxial actuator having an objective lens opposing an information recording surface of an optical disk; a slide base having the biaxial actuator mounted thereon and being movable in a radius direction of the optical disk; a shutter movably provided on the slide base and having a trigger portion for cooperation with an operating member to move the shutter between a lens opening position and a lens closing position, wherein one of the shutter and the slide base has a rotary shaft, and an other of the shutter and the slide base has a bearing portion for rotably supporting the rotary shaft, whereby the shutter is rotatable and is directly supported by the slide base; and a torsion spring containing a coil portion concentrically supported by the rotary shaft and having a pair of end portions, one of the pair of end portions: being hooked on the bearing portion and an other of the pair of end portions being hooked on the shutter for urging the shutter to the lens closing position.