Patent · US Active

Holographic data support and method for production thereof

US8027238B2 · kind B2 · utility

2Cited by

8References

22Claims

0Family size

Assignee

BUNDESDRUCKEREI GMBH · DE

Inventors

Jens Ehreke · Berlin, DE
Michael Knebel · Berlin, DE
Tomas Loeer · Berlin, DE
Oliver Muth · Berlin, DE
Rainer Seidel · Berlin, DE

Key dates

Filing date	Mar 7, 2005
Grant date	Sep 27, 2011
Priority date	—
Expiry date	Mar 2, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG03H2250/44
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a data support (1) with a core layer (15) and at least one adjacent layer (14a), laminated to the core layer and a corresponding production method, said core layer being embodied from a holographic data store in the form of a volume hologram (5). The surface (141) facing the core layer, on the layer directly adjacent to the core layer, has a roughness (19), before lamination to the core layer, which affects the wavelength shift of the image reconstructed by the volume hologram.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.