Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2005-11-04
2009-11-10
Young, Wayne R (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S112120, C369S053200, C359S719000, C359S742000
Reexamination Certificate
active
07616549
ABSTRACT:
The present invention is related to a chromatic aberration-correcting element which allows the adoption of BDs even when DVD/CD light beams are incident. The chromatic aberration-correcting element has a diffractive structure formed thereon, which can correct chromatic aberration in BD wavelength light beams in addition to adopting DVD/CD wavelength light beams. Also provided is an optical pickup device whose structure is simplified by employing the chromatic aberration-correcting element.
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Ariyoshi Tetsuo
Jeong Ho Seop
Jung Soo Jin
Darby & Darby P.C.
Nguyen Linh T
Samsung Electro-Mechanics Co. Ltd.
Young Wayne R
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