Optical pickup and optical disk drive apparatus

Details Optical pickup and optical disk drive apparatus Optical pickup and optical disk drive apparatus

2008-08-22

2010-11-23

Tran, Thang V (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

07839730

ABSTRACT:
An optical pickup includes an objective lens, a protection member for protecting the objective lens, and a lens holding member configured to hold these members. The optical pickup records and/or reproduces an information signal on and/or from an optical recording medium by condensing laser light through the objective lens. The protection member includes a bearing surface to contact a surface of an edge portion of the objective lens not facing the optical recording medium, an aperture to control a diameter of laser light to be incident on the objective lens, and a protection portion protruding toward the optical recording medium with respect to the objective lens. The bearing surface, the aperture, and the protection portion are integrally formed with one another.

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English translation of Notification of Reason for Refusal issued by the Japanese Patent Office on Jun. 9, 2009, in Japanese patent application No. 2007-273862.
Japanese Office Action dated Jun. 9, 2009, issued in corresponding Japanese patent application No. 2007-237862.
*Abstract for JP 10-42521.

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