Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2007-02-05
2010-10-12
Young, Wayne R (Department: 2627)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S112010, C369S112160, C369S112180, C369S044110, C369S112020, C369S044230
Reexamination Certificate
active
07813233
ABSTRACT:
An optical pickup unit includes a light source emitting a light beam, an objective lens focusing the light beam onto an information recording medium, a light detection part receiving the light beam reflected from the information recording medium, and a light blocking part selectively blocking a part of the light beam with respect to a radial direction. The light blocking part is provided in an optical path of the light beam centered on an optical axis.
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Japanese Office Action.
Bibbins Latanya
Dickstein & Shapiro LLP
Ricoh & Company, Ltd.
Young Wayne R
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