<p>An optical scanning device (3) for scanning a multiple of types of optical recording media. The optical scanning device is provided with a filtering means (301) that is arranged and configured such that when scanning an optical recording medium (15) having plurality of information layers (L0, L1) radiation reflected by another information layer than the information layer being scanned is not reaching the radiation detector (38), while the filtering means is substantially not affecting the radiation towards the radiation detector when another type of recording media is scanned. Improved data signal reproduction and tracking servo signals are obtained.</p>
申请公布号
WO2007048833(A1)
申请公布日期
2007.05.03
申请号
WO2006EP67839
申请日期
2006.10.26
申请人
ARIMA DEVICES CORPORATION;VREHEN, JORIS JAN;DE WIT, JOHANNES MATHEUS MARIE