Optically Variable Data Storage Device

摘要

An optically variable device uses a data storage layer with a nano-optical bit system to store data. The optically variable device encodes the data using spectral signatures (such as colors) as variables. In some embodiments, the optically variable device uses angle multiplexing to store machine-readable data and an image. The optically variable device can be used as a secure data storage medium for a large volume of data. The storage capacity can be increased by increasing the number of color variables and by introducing additional variables such as intensity and polarization.

主权项

1. An optically variable storage device configured to store data encoded in a plurality of optical bits in a data storage layer, wherein said optically variable storage device comprises:
(a) said data storage layer comprising said plurality of optical bits selectively readable when said data storage layer is illuminated at a first predetermined direction and a first angle of incidence with respect to said data storage layer; (b) an upper layer overlying said data storage layer; and (c) a lower layer overlain by said data storage layer, wherein said upper layer and said lower layer comprising at least one of a dielectric material and a metallic material, and each of said plurality of bits has a respective spectral signature.