Optical recording medium

Application Number: 00108559
Application Date: 2000.05.16
Publication Number: 1274913
Publication Date: 2000.11.29
Priority Information: 1999/5/21 DE 19923542.2
International: G11B7/24
Applicant(s) Name: Deutsche Thomson-Brandt GmbH
Inventor(s) Name: Harmat Rickert;Ditmar Jude
Patent Agency Code: 11105
Patent Agent: lu xiaozhang
Abstract The present invention relates to an optical recording medium having at least two information carrier layers, on which information can be written by means of a focused light beam. In this case, a separating layer is arranged between the information carrier layers and a respective transparent covering layer is arranged between the information carrier layer and the surface of the recording medium, the thickness of which covering layer substantially exceeds that of the information carrier layer. One object of the present invention is to propose an optical recording medium in the case of which it is possible to write to both information carrier layers using a low optical power. Further objects of the invention are to specify an apparatus and also a suitable method for writing to a recording medium of this type. A recording medium according to the invention has information carrier layers which are both semi-transparent.