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).
申请公布号
WO2004036557(A2)
申请公布日期
2004.04.29
申请号
WO2003IB04023
申请日期
2003.09.15
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.;TUKKER, TEUNIS, W.;ANDERSEN, OLE, K.