Diffractive optical variable image including barcode

Details Diffractive optical variable image including barcode Diffractive optical variable image including barcode

2007-09-11

2007-09-11

Nguyen, Kimberly D. (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S462020, C235S462090, C235S462160, C235S454000, C235S457000

Reexamination Certificate

active

11069579

ABSTRACT:
An optically variable device (OVD) is provided that includes a barcode rendered from a three-dimensional barcode. To increase the readability of the barcode rendered in the OVD, the bars of the three-dimensional barcode may have tapered sidewalls and depths that are small compared to their heights and widths. The barcode may be rendered in the OVD such that it is viewable only at certain angles or using certain wavelengths of light. Also provided is a barcode of multiple portions where a portion is rendered in an OVD and another portion is otherwise provided (e.g., printed). Such a barcode may have portions that are readable as independent barcodes and are also readable together as a single, compound barcode. Also provided is a method where a plurality of OVDs with unique images are associated with products, e.g., packaged together, so that receipt of a package of products with non-unique images indicates counterfeiting.

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