OPTICAL RECORDING DISC ADAPTED TO STORING DATA USING AN ULTRA-VIOLET LASER SOURCE
摘要
<p>Optical record carrier (20) adapted to storing data using a recording/reading device. The recording/reading device comprises an ultra-violet laser source emitting electromagnetic radiation (29) having a wavelength X in the range of 230 nm to 270 nm. The recording/reading device further comprises an objective lens (21) for focussing the electromagnetic radiation (29) on the optical recording carrier. NA is the numerical aperture of the objective lens. The optical record carier comprises a spiral track (22), which has a track pitch TP between 0.55 * lambda/NA and 0.75 * lambda/NA.</p>
申请公布号
WO2005088615(A1)
申请公布日期
2005.09.22
申请号
WO2005IB50786
申请日期
2005.03.03
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.;MEINDERS, ERWIN, R.;MIJIRITSKII, ANDREI;MARTENS, HUBERT, C., F.
发明人
MEINDERS, ERWIN, R.;MIJIRITSKII, ANDREI;MARTENS, HUBERT, C., F.