Optical pickup device and correcting element used in the...

Details Optical pickup device and correcting element used in the... Optical pickup device and correcting element used in the...

2007-12-04

2007-12-04

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112040

Reexamination Certificate

active

10976845

ABSTRACT:
An optical pickup device wherein at least a high density disc such as HD-DVD is compatible with DVD, and securing an amount of light is compatible with correction of chromatic aberration. An a correcting element representing an optical system used for the aforementioned optical pickup device.

REFERENCES:
patent: 6950384 (2005-09-01), Arai et al.
patent: 7133332 (2006-11-01), Kimura
patent: 7151735 (2006-12-01), Arai et al.
patent: 7173895 (2007-02-01), Arai et al.
patent: 7173896 (2007-02-01), Arai et al.
patent: 7173897 (2007-02-01), Arai et al.

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