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:
Mar. 28, 2006
Filed:
Nov. 26, 2002
Richard L. Sutherland, Bellbrook, OH (US);
Lalgudi V. Natarajan, Beavercreek, OH (US);
Robert T Pogue, Pittsburgh, PA (US);
Christina K. Shepherd, Beaverbrook, OH (US);
Donna M. Brandelik, New Carlisle, OH (US);
Richard L. Sutherland, Bellbrook, OH (US);
Lalgudi V. Natarajan, Beavercreek, OH (US);
Robert T Pogue, Pittsburgh, PA (US);
Christina K. Shepherd, Beaverbrook, OH (US);
Donna M. Brandelik, New Carlisle, OH (US);
Science Applications International Corporation, San Diego, CA (US);
Abstract
The present invention offers control over—and the ability to optimize—the performance parameters of switchable holograms. The present invention offers the ability to tailor the properties of a hologram to a desired application and thus make application-specific holograms. The invention relates to polymer-dispersed liquid crystal materials subject to control and optimization of the performance parameters of switchable holograms. Such variability allows tailoring the properties to application-specific devices. Specifically, the present invention provides an improved polymer-dispersed liquid crystal system that allows variation of: 1) haze, 2) switching voltage, 3) electrical power dissipation, 4) switching stability (voltage creep), 5) switching contrast ratio (range), 6) dynamic stability, and 7) the operating temperature range.