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:
Jun. 22, 2010
Filed:
Aug. 20, 2004
Bernardus Hendrikus Wilhelmus Hendriks, Eindhoven, NL;
Joris Jan Vrehen, Eindhoven, NL;
Pascal Jean Henri Bloemen, Eindhoven, NL;
Peter Coops, Eindhoven, NL;
Bernardus Hendrikus Wilhelmus Hendriks, Eindhoven, NL;
Joris Jan Vrehen, Eindhoven, NL;
Pascal Jean Henri Bloemen, Eindhoven, NL;
Peter Coops, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to an optical scanning device for scanning in a first mode a first information layer () of an information carrier and in a second mode a second information layer () of the information carrier. The optical scanning device comprises a radiation source () for generating a radiation beam (), an objective system () for focusing an entrance beam on an information layer and an optical element () arranged between the radiation source and the objective system, for converting said radiation beam into a diverging entrance beam in the first mode and a converging entrance beam in the second mode.