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US 10,204,652 B2Granted
Optical recording medium having a plurality of recording layers capable of suppressing off-track
AssigneeSony Corporation
InventorsYo Ota, Kensaku Takahashi, Manami Miyawaki
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Abstract
An optical recording medium includes a light-receiving surface that receives incident light and at least three information signal layers on which information signals are to be optically recorded. Among the at least three information signal layers, the information signal layer closest to the light-receiving surface has a reflectance in a range of 4% to 11%.
Claims14
An optical recording medium, comprising:
- a light-receiving surface configured to receive incident light;
- and
- at least three 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 4% 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%.
2 more elements
Dependencies are inferred from the claim text.