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:
Jul. 03, 2007
Filed:
Dec. 19, 2003
Vladimir P. Raksha, Sanat Rosa, CA (US);
Paul T. Kohlmann, Windsor, CA (US);
Richard A. Bradley, Santa Rosa, CA (US);
Charles K. Carniglia, Santa Rosa, CA (US);
Alberto Argoitia, Santa Rosa, CA (US);
Roger W. Phillips, Santa Rosa, CA (US);
Vladimir P. Raksha, Sanat Rosa, CA (US);
Paul T. Kohlmann, Windsor, CA (US);
Richard A. Bradley, Santa Rosa, CA (US);
Charles K. Carniglia, Santa Rosa, CA (US);
Alberto Argoitia, Santa Rosa, CA (US);
Roger W. Phillips, Santa Rosa, CA (US);
JDS Uniphase Corporation, Milpitas, CA (US);
Abstract
The light transmitted and reflected by all-dielectric optically variable pigments varies according to viewing angle. The color travel of an all-dielectric optically variable pigment depends on amplitude changes and wavelength shifts in reflectance peaks of the pigment. The width and center wavelength of reflectance peaks can be controlled by selecting the ratio of thicknesses between high-index and low-index layers in a thin film stack. Reflectance peaks can regenerate or become suppressed and shift with tilt angle, thus providing a wide variety of color trajectories.