Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2005-08-02
2005-08-02
Miller, Brian E. (Department: 2652)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044370, C720S674000
Reexamination Certificate
active
06925036
ABSTRACT:
An optical pickup apparatus (100) is provided with: a carriage body (80); an optical parts accommodation module (70) mounted on said carriage body and accommodating at least (i) a light beam emitting portion (41, 42, 55) for emitting a light beam, (ii) a light beam receiving portion (57, 65), (iii) a beam splitter (44) and (iv) a grating (43) for generating a sub beam for a tracking adjustment out of the light beam emitted from said light beam emitting portion; and a grating adjustment mechanism (62, 63) for rotating said optical parts accommodation module. The optical parts accommodation module is mounted on said carriage body in such a condition that said optical parts accommodation module is allowed to rotate with an axis line of the light beam, which is irradiated toward a disc, as a rotational center. The grating adjustment mechanism has a cam plane (63) abut to an abut plane (52) formed at a portion apart from the axis line and including a slide cam member (62) mounted in such a condition that said slide cam member is regulated to be movable on a straight line with respect to said carriage body.
REFERENCES:
patent: 5056891 (1991-10-01), Masunaga
patent: 5828643 (1998-10-01), Takeda et al.
patent: 6185180 (2001-02-01), Morishita
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patent: 6633530 (2003-10-01), Takeda
patent: 62157367 (1987-07-01), None
Fujinoki Shinichi
Goami Kazutaka
Sasanuma Shigeyuki
Takaya Shigeru
Agustin Peter Vincent
Miller Brian E.
Pioneer Corporation
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