Abstract:
With the disc-shaped recording medium, or the disc manufacturing method according to the present invention, for both the single-layer disc and the multi-layer disc, a recording layer L0, which is to be the first layer, is at the same distance, along the direction of disc thickness, from the surface of the cover layer CVLs on which falls the laser light. For the multi-layer disc, the second layer L1 and the following layer(s) are formed at the locations which are closer to the cover layer CVLs than the first layer L0. Management information may be recorded by mobbling grooves, each layermay have tert areas, defect information, a replacement area. Thus, it is possible to improve compatibility, reliability and accessibility between a single-layer disc and a multi-layer disc. The spherical aberration for the recording/reproducing light may be controlled with respect to the selected layer.
Abstract:
The invention relates to method for producing a light trapping layer on a transparent substrate for use in a photovoltaic device comprising at least the steps of: i) providing a transparent substrate having a first substantially flat surface; ii) applying a light trapping texture in the exposed surface of the transparent substrate. The method is according to the invention characterized in that step ii) comprises the steps of: ii-1) providing a replication substrate having a replication texture exhibiting a negative image of the light trapping texture to be applied on said exposed surface of the transparent substrate; ii-2) replicating said negative replication texture in the exposed surface of the transparent substrate.
Abstract:
The invention relates to method for producing a light trapping layer on a transparent substrate for use in a photovoltaic device comprising at least the steps of: i) providing a transparent substrate having a first substantially flat surface; ii) applying a light trapping texture in the exposed surface of the transparent substrate. The method is according to the invention characterized in that step ii) comprises the steps of: ii-1) providing a replication substrate having a replication texture exhibiting a negative image of the light trapping texture to be applied on said exposed surface of the transparent substrate; ii-2) replicating said negative replication texture in the exposed surface of the transparent substrate.
Abstract:
With the disc-shaped recording medium, or the disc manufacturing method according to the present invention, for both the single-layer disc and the multi-layer disc, a recording layer L0, which is to be the first layer, is at the same distance, along the direction of disc thickness, from the surface of the cover layer CVLs on which falls the laser light. For the multi-layer disc, the second layer L1 and the following layer(s) are formed at the locations which are closer to the cover layer CVLs than the first layer L0. Thus, it is possible to improve compatibility, reliability and accessibility between a single-layer disc and a multi-layer disc.
Abstract:
A method is described for writing an optical record carrier, in which a mark representing recorded data is written in the record carrier by a sequence of radiation pulses. The radiation power has a different level in between the pulses of a sequence and immediately after the last pulse of a sequence. This allows an independent control of the leading- and trailing-edge jitter of the marks written.