Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2011-08-30
2011-08-30
Hindi, Nabil Z (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S053190
Reexamination Certificate
active
08009526
ABSTRACT:
It is an object of the present invention to provide an optical pickup device being capable of correcting coma aberration induced in a light-condensing optical system including an objective lens for an optical disc and having a reduced size and a reduced thickness in comparison with the conventional art. The present invention includes a first coma-aberration correction actuator (6) including a first tilt drive portion for inclining an objective lens in a first tilt direction, and a second coma-aberration correction actuator (7) including a second tilt drive portion for inclining, in a second tilt direction, a coma-aberration correction lens placed between a light source and a raising mirror for reflecting emitted light toward the objective lens.
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Komma Yoshiaki
Tomita Hironori
Wakabayashi Kanji
Yamasaki Fumitomo
Hindi Nabil Z
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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