Patent · US Active

Infrared (IR) transmitting graded index (GRIN) optical elements and method for making same

US10689284B2 · kind B2 · utility

0Cited by

17References

13Claims

0Family size

Assignee

The Government of the United States, as represented by the Secretary of the Navy · US

Inventors

Daniel J. Gibson · Greenbelt, US
Jasbinder S. Sanghera · Greenbelt, US
Guillermo R. Villalobos · Springfield, US
Ishwar D. Aggarwal · Waxhaw, US
Dean Scribner · Arlington, US

Key dates

Filing date	Feb 10, 2012
Grant date	Jun 23, 2020
Priority date	—
Expiry date	Jun 18, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG02B3/0087
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention is directed to a method for making infrared transmitting graded index optical elements by selecting at least two different infrared-transmitting materials, each with a different refractive index, having similar thermo-viscous behavior; assembling the infrared-transmitting materials into a stack comprising one or more layers of each infrared-transmitting material resulting in the stack having a graded index profile; and forming the stack into a desired shape. Also disclosed is the related optical element made by this method.

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