Apparatus and method for producing optical recording medium, optical recording medium, apparatus and method for reproduction and apparatus and method for recording
AssigneeSony Corporation
InventorsTetsujiro Kondo, Norifumi Yoshiwara
Life of this patent
Estimating the term…
Abstract
An optical recording medium having a plural number of recording layers includes a n-th recording layer (23) (n≧1), made up by a substrate (20) and a semi-reflective layer (21) carried by the substrate (20) and adapted for partially reflecting and partially transmitting the incident light, a (n+1)th recording layer (28), made up by another substrate (25) and a reflecting layer (26) carried by the substrate (25) and adapted for reflecting the incident light, and a light condensing layer (24) for condensing the light incident via the n-th recording layer (23) on the (n+1)th recording layer (28).
Claims5
An optical recording medium having a plurality of recording layers, comprising
- a n-th (n≧1) recording layer at least having a substrate and a semi-reflective layer for partially reflecting and partially transmitting the incident light, formed on said substrate;
- a (n+1)th recording layer at least having another substrate and a reflecting layer for reflecting the light, incident thereon, formed on said another substrate;
- and
- a light condensing layer for collecting the light incident through said n-th recording layer on said (n+1)th recording layer.
Dependencies are inferred from the claim text.