The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 2000
Filed:
Jan. 13, 1998
Gerard E Van Rosmalen, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A scanning device for an optical disc record carrier includes a turntable and a positioning device which is movable relative to the turntable in a plane transverse to the axis of rotation thereof. The positioning device includes a radiation source unit and an actuator unit having a carrier which supports several different objective lenses and which is movable parallel to the access of rotation. The scanning device further includes actuating apparatus for moving the actuator unit and the radiation source unit relative to one another between discrete operating positions in at least the plane transverse to the axis of rotation, so as to place a respective lens in position for scanning a respective one of several different types of optical discs having mutually different substrate thicknesses and/or information densities.