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US 7,990,593 B2Granted
Holographic storage material
AssigneeTesa Scribos GmbH
InventorKay Schulte-Wieking
Life of this patent
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Abstract
The invention relates to holographic storage material (1) comprising at least one polymer film (3) and one metallic first layer (4) which is applied to the polymer film (3). In order to provide a storage material (1) having improved optical properties, a non-metallic second layer (5) and a metallic third layer (6) are provided. The second layer (5) is arranged between the first (4) and the third (6) layers. The total thickness of the first, second and third layers (4,5,6) is less than the wavelength of the radiation used for reading out.
Claims17
A holographic storage material (1), comprising
- a polymer film (3),
- a metallic first layer (4),
- wherein the metallic first layer (4) is arranged directly or indirectly on the polymer film (3),
- a non-metallic second layer (5),
- a metallic third layer (6),
- wherein the second layer (5) is arranged between the first layer (4) and the third layer (6), and the first layer (4), the second layer (5) and the third layer (6) together have an overall thickness of less than the wavelength of the radiation used for reading, and
- wherein the first layer (4), the second layer (5) and the third layer (6) together have an optical density (OD) of from 1.9 to 3.
4 more elements
Dependencies are inferred from the claim text.