Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 15, 2008
Patent Application Number
10531014
Date Filed
September 15, 2003
Patent Primary Examiner
Patent abstract
This invention relates to an optical scanning device for scanning an optical record carrier and detecting a tilt characteristic of the optical record carrier during scanning. The device includes a redirecting structure (26) arranged on an objective lens (10) to redirect a part of a radiation beam, when travelling towards the record carrier, differently to a main part of the radiation beam. The redirected beam part follows a path which is different to that of a path followed by the main beam part, towards a position sensitive detector in a detection system (16).
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