Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2006-08-22
2006-08-22
Wellington, Andrea (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S044230, C369S044320, C369S053200
Reexamination Certificate
active
07095701
ABSTRACT:
The astigmatic aberration in an optical system is to be adjusted. Specifically, in an optical disc device on which can be selectively loaded a first optical disc having a first index of double refraction or a second optical disc having a second index of double refraction larger than said first index of double refraction, and which includes a liquid crystal device31between a light source11and an objective lens15converging a light beam radiated from said light source on the optical disc2loaded on the optical disc device, the voltage applied to the liquid crystal device31is adjusted to correct the coma aberration or the astigmatic aberration for the first disc or the second disc, respectively.
REFERENCES:
patent: 5831942 (1998-11-01), Morimoto et al.
patent: 5859818 (1999-01-01), Tateishi et al.
patent: 5859822 (1999-01-01), Inoue et al.
patent: 6151154 (2000-11-01), Ogasawara et al.
patent: 6295256 (2001-09-01), Kimikawa et al.
patent: 6411577 (2002-06-01), Hirose
patent: 6449236 (2002-09-01), Wals et al.
patent: 6480454 (2002-11-01), Wada et al.
patent: 6628589 (2003-09-01), Iwasaki et al.
patent: 6940798 (2005-09-01), Noborimoto et al.
Patent Abstracts of Japan, JP 2000-067453, Mar. 3, 2000.
Ortiz-Criado Jorge L.
Sony Corporation
Wellington Andrea
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