Optical head and an optical record playback equipment

Details Optical head and an optical record playback equipment Optical head and an optical record playback equipment

2007-03-02

2009-08-04

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With support

C359S824000, C369S044230

Reexamination Certificate

active

07570440

ABSTRACT:
An optical head including a housing that supports an objective lens driving device, which drives an objective lens. A main-shaft and sub-shaft support the housing such that the housing slides along a radial direction of an optical recording medium along the main-shaft and the sub-shaft. A main-bearing is formed on the housing that supports the main-shaft so that the main-shaft can slide free through the main-bearing. A sub-bearing is formed on the housing and supports the sub-shaft so that the sub-shaft can slide free through the sub-bearing. At least one slot is formed in the sub-bearing at a portion that contacts the sub-shaft.

REFERENCES:
patent: 5113387 (1992-05-01), Goldsmith et al.
patent: 5432772 (1995-07-01), Yamamoto
patent: 5511049 (1996-04-01), Goda
patent: 09-204743 (1997-08-01), None
patent: 2004-348794 (2004-12-01), None
patent: 2005-025920 (2005-01-01), None
patent: 2005-285166 (2005-10-01), None

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