Optical scanning device

Details Optical scanning device Optical scanning device

2007-01-09

2007-01-09

Korzuch, William (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

10531018

ABSTRACT:
An optical head for use in the scanning of a record carrier, the record carrier having data stored on data tracks therein on a plurality of information layers (3, 4) at a plurality of depths within the record carrier. The optical head comprises: a movable optical element (16) arranged in an optical path to act upon a first radiation beam (12) and a second radiation beam (14) to provide the beams with a different displacement perpendicular to the optical path; and a lens system for focusing said first beam (12) at a first focal point (A) on a first information layer (3) of the record carrier and the focusing of the second beam (14) at a second different focal point (B) on a second information layer (4), wherein a spacing, transverse to the data tracks, between said first and second focal points (A, B) is controllable by varying the configuration of the movable optical element.

REFERENCES:
patent: 5526336 (1996-06-01), Park et al.
patent: 5768221 (1998-06-01), Kasami et al.
patent: 6600704 (2003-07-01), Richter et al.
patent: 2005/0243688 (2005-11-01), Schleipen
patent: 0837455 (1998-04-01), None
patent: 0837455 (1998-08-01), None
patent: 0837455 (2004-01-01), None
patent: 10149560 (1998-06-01), None
patent: 2000187880 (2000-07-01), None
patent: 2000195097 (2000-07-01), None
patent: WO0193254 (2001-12-01), None

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