The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 2007
Filed:
Jun. 07, 2005
Nigel Abraham, Highlands Ranch, CO (US);
Mark T. Turnage, Denver, CO (US);
Patrick Byrne, Ojai, CA (US);
John Town, Ojai, CA (US);
Nigel Abraham, Highlands Ranch, CO (US);
Mark T. Turnage, Denver, CO (US);
Patrick Byrne, Ojai, CA (US);
John Town, Ojai, CA (US);
Optical Security Group, Inc., Denver, CO (US);
Abstract
An optical disc for data storage includes a layer of color-shifting material. Light passing through the color-shifting layer will have a color determined by the various constructive and destructive interference of the various wavelengths after they have passed through the material, diffracted while passing through the material, and are reflected off of various portions of the material, resulting in a color change when the viewing angle is changed. Additionally, an optical variable device may be defined within the disc, and may include the color-shifting layer.