Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2011-05-03
2011-05-03
Nguyen, Hoa T (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S053250, C369S112230
Reexamination Certificate
active
07936644
ABSTRACT:
A highly reliable optical pickup which is not likely to collide with an optical disk is provided. Relative positions of two objective lenses100and101(along a focus direction) on a lens holder102are determined so that, while the objective lens101having a longer working distance is focused on an optical disk200, the objective lens100having a shorter working distance and a protective member103are at positions which are more distant from the optical disk200than a height h of a protrusion which is present in an inner peripheral region of the optical disk optical disk200.
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Boku Kouretsu
Hayashi Hideki
Komma Yoshiaki
Wakabayashi Kanji
Chu Kim-Kwok
Nguyen Hoa T
Panasonic Corporation
Renner , Otto, Boisselle & Sklar, LLP
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