Patent ID: 6175546
Filing Date: 2001-01-16
Classification: G11B

Abstract:
A curved beam supporting structure for use to support the focusing and tracking movements of an optical pickup actuator having an objective lens supported by a lens holder, said curved-beam supporting structure comprising:a voice-ring motor yoke for supporting said actuator; andat least four curved beams made of metal, including a first curved beam, a second curved beam, a third curved beam and a fourth curved beam, all of which are mounted between said yoke and said lens holder and oriented in perpendicular to both the tracking and focusing directions of said actuator wherein each of the four curved beams are curved over substantially their entire length so as to define an arc, said first and second curved beams being mounted on one side of said actuator and said third and fourth curved beams being mounted on the other side of said actuator, said first and third curved beams being arranged farther away from said yoke than said second and fourth curved beams.