Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2005-12-13
2005-12-13
Psitos, A M (Department: 2653)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C369S112240
Reexamination Certificate
active
06974939
ABSTRACT:
An optical recording/reproducing apparatus is intended for a recording medium having at least two information recording layers. The apparatus has at least two lenses, a first lens and a second lens, for condensing a light beam to irradiate an information recording layer. The at least two lenses are designed such that a light beam condensed by these lenses upon an information recording layer closest to these lenses has a minimum spherical aberration.
REFERENCES:
patent: 4918679 (1990-04-01), Opheij et al.
patent: 5157555 (1992-10-01), Reno
patent: 5677903 (1997-10-01), Holtslag et al.
patent: 5712842 (1998-01-01), Yamamoto et al.
patent: 5841753 (1998-11-01), Holtslag et al.
patent: 5995292 (1999-11-01), McDonald
patent: 6097688 (2000-08-01), Ichimura et al.
patent: 6115347 (2000-09-01), Ichimura et al.
patent: 6130418 (2000-10-01), Van Rosamalen et al.
patent: 6141302 (2000-10-01), Koyama et al.
patent: 6229600 (2001-05-01), Martynov
patent: 6381208 (2002-04-01), Abe et al.
patent: 6414931 (2002-07-01), Maeda et al.
patent: 6418108 (2002-07-01), Ueda et al.
patent: 6498775 (2002-12-01), Fan et al.
patent: 6567365 (2003-05-01), Hendriks et al.
patent: 000517491 (1992-09-01), None
patent: A-62-3441 (1987-01-01), None
patent: A-5-151644 (1993-06-01), None
patent: 5-266511 (1993-10-01), None
patent: 8-212579 (1996-08-01), None
patent: 8-255347 (1996-10-01), None
patent: 09-251662 (1997-09-01), None
patent: A-9-251645 (1997-09-01), None
patent: 10-069648 (1998-03-01), None
patent: 10-142494 (1998-05-01), None
patent: 10-188301 (1998-07-01), None
patent: 10-255290 (1998-09-01), None
patent: WO-00/34949 (2000-06-01), None
Ichimura, et al.; “O PLUS E”; Sharp: pp. 175-181: vol. 22; No. 2; Feb. 2000 (with partial English translation).
Conlin David G.
Edwards & Angell LLP
Manus Peter J.
Psitos A M
Sharp Kabushiki Kaisha
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