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US 8,526,087 B2Granted
Hologram recording medium
AssigneesSony Corporation, Sony Disc & Digital Solutions Inc.
InventorsAkira Shirakura, Nobuhiro Kihara
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Abstract
Disclosed herein is a hologram recording medium, wherein in a volume hologram, the hologram recording medium is covered with a partially patterned optical functional film on the side closer to the viewer than a hologram recording layer without the medium of air, and wherein the hologram recording medium maintains its appearance approximately unchanged irrespective of the presence or absence of the optical functional film.
Claims11
A volume hologram recording medium, comprising:
- a hologram recording layer with a hologram recorded therein;
- an optical functional film on a side of the hologram recording layer from which the hologram is viewed;
- and
- a layer between the hologram recording layer and the optical functional film and securing the hologram recording film and the optical functional film together;
- wherein,
- the optical functional film is a biaxially stretched polymer film with at least a partial pattern therein, and
- at least a portion of the optical functional film is optically anisotropic.
4 more elements
Dependencies are inferred from the claim text.