Optical pickup unit feeding apparatus and optical disc drive...

Details Optical pickup unit feeding apparatus and optical disc drive... Optical pickup unit feeding apparatus and optical disc drive...

2006-05-30

2006-05-30

Korzuch, William (Department: 2653)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

Reexamination Certificate

active

07055161

ABSTRACT:
An optical pickup unit feeding apparatus for moving an optical pickup unit by rotation of a lead screw with a spiral groove in an optical disc drive, including a guide member combined with the optical pickup unit, the guide member including one or more contact parts engaging the spiral groove formed on the lead screw, applying a force to the optical pickup unit in response to the rotation of the lead screw, wherein the force moves the optical pickup; and an elastic member having a first elastic section elastically engaging the contact parts to the spiral groove, and a second elastic section forcing the contact parts not to separate from the spiral groove, wherein a spring constant of the second elastic section is greater than a spring constant of the first elastic section.

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Notice of Office Action issued by Korean Patent Office on Nov. 11, 2004 during examination of a corresponding Korean application.

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