Optical data medium containing in the information layer, a dye as a light-absorbing compound Abstract optical data medium containing a preferably transparent substrate which is optionally already coated with one or more barrier layers and on the surface of which an information layer which can be recorded on using light, optionally one or more barrier layers, and a cover layer containing a radiation-cured resin, have been applied, which data medium can he recorded on and read using focused blue light through the cover layer on the information layer, preferably laser light with the wavelength between 360 nm and 460 nm, the information layer containing a light-absorbing characterized in that at least one dye is used as the light-absorbing compound wherein the cover layer dies have a total thickness of 10 &mgr;m 177 m and the numerical aperture NA of the focusing objective lens setup is greater or equal 0.8.
在信息层中含有作为光吸收化合物的
染料的光学数据介质 摘要 光学数据介质含有一个最好是透明的基片,该基片可选择地已涂有一层或多层阻挡层,在该基片的表面上有一个可用光记录的信息层,可选择地有一层或多层阻挡层,以及一个含有辐射固化
树脂的覆盖层、信息层含有光吸收层,其特点是至少使用一种
染料作为光吸收化合物,其中覆盖层模具的总厚度为 10 &mgr;m 177 m,聚焦物镜设置的数值孔径NA大于或等于0.8.