Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2008-09-23
2010-11-16
Huber, Paul (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
Reexamination Certificate
active
07835253
ABSTRACT:
An actuator used with an optical pickup includes: a base on which a holder is fixed; a lens holder in which a plurality of installation holes are formed such that a plurality of objective lenses to record and/or reproduce optical discs having different recording densities are installed at different heights; a support member, which movably supports the lens holder, having one end coupled to the lens holder and the other end coupled to the holder; and a magnetic circuit which drives the lens holder in focusing and tracking directions. The plurality of installation holes include a first installation hole in which a first objective lens for at least one type of low density optical disc is installed, and a second installation hole in which a second objective lens for a higher density optical disc than the low density optical disc is installed. When a working distance of the first objective lens for the low density optical disc installed in the first installation hole is represented as WD1, and a working distance of the second objective lens for the high density optical disc installed in the second installation hole is represented as WD2, the first and second installation holes are provided so that the first and second objective lenses are installed to satisfy the Equation:in-line-formulae description="In-line Formulae" end="lead"?WD1≧WD2,in-line-formulae description="In-line Formulae" end="tail"?a separation distance between the optical disc and the second objective lens=WD2+αwhere, α=|WD1−WD2|×(0.1˜1.0).The second installation hole is located in a more outer circumference of the optical disc than the first installation hole.
REFERENCES:
patent: 5729510 (1998-03-01), Kasahara et al.
patent: 5864524 (1999-01-01), Sakaguchi
patent: 5999507 (1999-12-01), Yoshizawa
patent: 6021107 (2000-02-01), Tsukahara et al.
patent: 6285644 (2001-09-01), Kano
patent: 6344936 (2002-02-01), Santo et al.
patent: 6587284 (2003-07-01), Santo et al.
patent: 6741543 (2004-05-01), Suzuki et al.
patent: 2002/0075575 (2002-06-01), Santo et al.
patent: 1115673 (2003-07-01), None
patent: 777222 (1997-06-01), None
patent: 910074 (1999-04-01), None
patent: 1111603 (2001-06-01), None
patent: 6-333255 (1994-12-01), None
patent: 9-297927 (1997-11-01), None
patent: 10-106001 (1998-04-01), None
patent: 10-124894 (1998-05-01), None
patent: 2001-23200 (2001-01-01), None
patent: 2001-118265 (2001-04-01), None
patent: 2001-167458 (2001-06-01), None
patent: 2001-319358 (2001-11-01), None
Chinese Office Action dated Apr. 30, 2004 in Chinese Application No. 2131575.2.
European Search Report dated May 31, 2005, issued in corresponding European Patent Application No. 05007845.0.
U.S. Appl. No. 10/247,794, filed Sep. 20, 2002, Seok-jung Kim, et al., Samsung Electronics Co., Ltd.
U.S. Appl. No. 11/019,992, filed Dec. 23, 2004, Seok-jung Kim, et al., Samsung Electronics Co., Ltd.
U.S. Appl. No. 11/056,401, filed Feb. 14, 2005, Seok-jung Kim, et al., Samsung Electronics Co., Ltd.
European Search Report dated Dec. 5, 2008 in European Application No. 08165367.7.
Kim Seok-jung
Kim Sun-mo
Lee Yong-hoon
Huber Paul
NSIP Law
Samsung Electronics Co,. Ltd.
LandOfFree
Actuator having a plurality of objective lenses installed in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Actuator having a plurality of objective lenses installed in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Actuator having a plurality of objective lenses installed in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4174234