Objective lens-driving apparatus

Details Objective lens-driving apparatus Objective lens-driving apparatus

2006-03-21

2006-03-21

Epps, Georgia (Department: 2873)

Optical: systems and elements

Lens

With support

C359S813000, C359S824000, C369S044210, C369S044190, C369S044320, C369S044140, C369S044150, C369S044160

Reexamination Certificate

active

07016125

ABSTRACT:
An objective lens driving apparatus is used for accurately positioning an abject to focus a light spot on an optical recording medium. A lens holder holds the objective lens and has a bearing hole through which a shaft extends in a direction parallel to the optical axis so that the lens holder is rotatably supported on the shaft. Two magnets are supported on the lens holder so that the shaft is between the magnets. A base has two magnetic members disposed such that each of the two magnets exerts an attraction force on a corresponding one of the two magnetic members to urge the lens holder in a direction of the optical axis and in a direction perpendicular to the optical axis. A first coil set of first focusing and tracking coils and a second coil set of focusing and tracking coils are mounted to the two magnetic members.

REFERENCES:
patent: 4473274 (1984-09-01), Yano et al.
patent: 4752117 (1988-06-01), Ichikawa et al.
patent: 5046820 (1991-09-01), Saekusa et al.
patent: 5105405 (1992-04-01), Hashimoto et al.
patent: 5206762 (1993-04-01), Kasahara et al.
patent: 5319497 (1994-06-01), Wakabayashi et al.
patent: 5479386 (1995-12-01), Takeshita et al.
patent: 5506732 (1996-04-01), Mori
patent: 5513047 (1996-04-01), Matsui
patent: 5541898 (1996-07-01), Kasuga et al.
patent: 5646789 (1997-07-01), Lee
patent: 5659525 (1997-08-01), Miyamae et al.
patent: 5920437 (1999-07-01), Shirotori
patent: 5999342 (1999-12-01), Okada et al.
patent: 6195314 (2001-02-01), Inui et al.
patent: 6212019 (2001-04-01), Yokouchi
patent: 6295255 (2001-09-01), Seo et al.
patent: 6341104 (2002-01-01), Yamaguchi et al.
patent: 6385146 (2002-05-01), Choi et al.
patent: 6418094 (2002-07-01), Ozawa et al.
patent: 58-175143 (1983-10-01), None
patent: 62-058430 (1987-03-01), None
patent: 63-135519 (1988-09-01), None
patent: 2-096933 (1990-04-01), None
patent: 2-195522 (1990-08-01), None
patent: 4-45891 (1992-07-01), None
patent: 5-197984 (1993-08-01), None
patent: 7-19388 (1995-03-01), None
patent: 10/172158 (1998-06-01), None
patent: 10-241174 (1998-09-01), None
patent: 3323699 (2002-06-01), None
patent: 2003-203372 (2003-07-01), None

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