Dynamic information storage or retrieval – Dynamic mechanism subsystem – Having power driven transducer assembly
Patent
1993-12-07
1996-11-26
Levy, Stuart S.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Having power driven transducer assembly
369 4416, 369 4422, 359824, G11B 709, G11B 712
Patent
active
055792952
ABSTRACT:
A scanning device comprises a stationary section (1) with a frame (3) and a section (5) which is movable along a first axis (Z) and a second axis (X) oriented transversely of the first axis and which comprises a lens (7) having an optical axis (7a) parallel to the first axis. The scanning device comprises a focusing coil (13) for moving the lens along the first axis and two mutually parallel pairs of tracking coils (15a, 15b; 17a, 17b) for moving the lens along the second axis. The tracking coils of each pair are disposed along a line (19; 21) parallel to the second axis and have coil axes (23a, 23b; 25a, 25b) oriented transversely of a plane defined by the first axis and the second axis. Pairs of magnet poles (27a, 2b; 29a, 29b) are arranged at opposite sides of the lens, the magnet poles being spaced apart and being situated between two bounding planes (31; 33) oriented transversely of the second axis. In a center position of the lens each magnet pole is disposed opposite only one tracking coil and the tracking coils are situated exclusively between said bounding planes. The magnet poles have facing surfaces (35a, 35b; 37a, 37b) which bound a zone (39, 41) oriented transversely of the plane defined by the first axis and the second axis, coil portions (15a1, 15b1; 17a1, 17b1) of the tracking coils extending in said zone.
REFERENCES:
patent: 4408313 (1983-10-01), Musha
patent: 4553227 (1985-11-01), Kido et al.
patent: 4570249 (1986-02-01), Malissin et al.
patent: 4766584 (1988-08-01), Sekimoto et al.
patent: 4796245 (1989-01-01), van Alem et al.
patent: 4942562 (1990-07-01), Suzuki
patent: 5105419 (1992-04-01), Ogura et al.
patent: 5124965 (1992-06-01), Mizuno et al.
patent: 5161067 (1992-11-01), Tomiyama et al.
patent: 5285434 (1994-02-01), Kim et al.
patent: 5367511 (1994-11-01), Aldenhoven et al.
"Principles of Optical Disc Systems" by G. Bouwhuis c.s., Philips Research Laboratories of Eindhoven, Adam Hilger Ltd., Bristol and Boston, 1985, .sctn.4.6.2, pp. 152-156.
Eason Leroy
Levy Stuart S.
Ometz David L.
U.S. Philips Corporation
LandOfFree
Scanning device and optical player comprising the scanning devic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scanning device and optical player comprising the scanning devic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning device and optical player comprising the scanning devic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1978661