DocumentCode
540192
Title
Optical pick-up for DVD
Author
Shinoda, M. ; Nakamura, K. ; Yabe, M. ; Watanabe, N. ; Sotoh, T. ; Hirai, N. ; Fujita, T. ; Kime, K. ; Ishida, Y.
fYear
1996
fDate
5-7 June 1996
Firstpage
410
Abstract
The optical pick-up for DVD with CD compatibility is discussed. DVD players or DVD-ROM drives are strongly required to have the conpatibility with conventional CD for the comrcialization of DVD. However, the difference of the substrate thickness between DVD and CD causes the different spherical aberration and prevents the laser beam from being focused into a diffraction limt spot size with only one objective lens. Several types of optical pick-ups for overcoming this problg and the twin lens type optical pick-up which is one of these solutions, are introduced.
Keywords
Actuators; Adaptive optics; DVD; Holographic optical components; Holography; Lenses; Optical diffraction;
fLanguage
English
Publisher
ieee
Conference_Titel
Consumer Electronics, 1996. Digest of Technical Papers., International Conference on
Print_ISBN
0-7803-3029-3
Type
conf
DOI
10.1109/ICCE.1996.517361
Filename
5726492
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