Patent · US Expired

Optical limiting device and method of preparation thereof

US6522447B2 · kind B2 · utility

3Cited by

10References

30Claims

0Family size

Assignee

The Regents of the University of California · US

Inventors

Hsing-Lin Wang · Los Alamos, US
Su Xu · Akron, US
Duncan McBranch · Santa Fe, US

Key dates

Filing date	May 31, 2001
Grant date	Feb 18, 2003
Priority date	—
Expiry date	Jul 6, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24942
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Optical limiting device and method of preparation thereof. The optical limiting device includes a transparent substrate and at least one homogeneous layer of an RSA material in polyvinylbutyral attached to the substrate. The device may be produced by preparing a solution of an RSA material, preferably a metallophthalocyanine complex, and a solution of polyvinylbutyral, and then mixing the two solutions together to remove air bubbles. The resulting solution is layered onto the substrate and the solvent is evaporated. The method can be used to produce a dual tandem optical limiting device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.