SCANNING APPARATUS FOR FLUORESCENT MULTI-LAYER STORAGE.
摘要
The invention relates to a scanning apparatus for scanning information in an information carrier (16) comprising a plurality of layers for storing data on a material capable of generating an excited radiation when interacting with an exciting beam (13) produced by an exciting source (11). The scanning apparatus comprises an objective lens (15) for projecting the exciting beam in a layer of the carrier and collecting the excited radiation. The scanning apparatus also comprises a detector unit (19) for detecting the excited radiation collected on the objective lens. According to the invention, the exciting beam has a numerical aperture lower than the lens numerical aperture.
申请公布号
WO2004023459(A2)
申请公布日期
2004.03.18
申请号
WO2003IB03757
申请日期
2003.08.22
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.;BUSCH, CHRISTOPHER;BALISTRERI, MARCELLO;OPHEY, WILLEM
发明人
BUSCH, CHRISTOPHER;BALISTRERI, MARCELLO;OPHEY, WILLEM