Back to results
US 9,911,451 B2Granted
Optical recording medium having a plurality of recording layers capable of suppressing off-track
AssigneeSony Corporation
InventorsYo Ota, Kensaku Takahashi, Manami Miyawaki
Life of this patent
Estimating the term…
Abstract
An optical recording medium includes a plurality of information signal layers on which information signals are to be optically recorded. Among the plurality of information signal layers, the information signal layer closest to the light-receiving surface has a reflectance of more than 4%.
Claims13
An optical recording medium, comprising:
- a light-receiving surface configured to receive incident light;
- and
- at least three of information signal layers,
- wherein a first information signal layer of the at least three information signal layers is closest to the light-receiving surface and has a first reflectance in a range of 6.3% to 11%, and
- wherein a reflectance difference between the first information signal layer and a third information signal layer of the at least three information signal layers is at least 1% of the first reflectance.
2 more elements
Dependencies are inferred from the claim text.