Optical pickup and information device for reducing an...

Details Optical pickup and information device for reducing an... Optical pickup and information device for reducing an...

2007-03-29

2011-12-06

Nguyen, Hoa T (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112030

Reexamination Certificate

active

08072868

ABSTRACT:
An optical pickup for irradiating an information recording medium, such as a DVD, with a laser beam when an information signal is recorded or reproduced, and information equipment provided with the optical pickup. The optical pickup is capable of recording or reproducing an information signal with higher accuracy, while reducing an influence of stray light in an information recording medium, such as a multilayer type optical disc.

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International Search Report for PCT/JP2007/056927, mailed May 15, 2007.

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