Liquid crystal control structure, tip-tilt-focus optical phased array and high power adaptive optic

US9632345B2 · kind B2 · utility

Assignee

• Raytheon Company · US

Inventors

• Terry A. Dorschner · Newton, US
• Irl W. Smith · Concord, US
• Amanda J. Kirchner · Worcester, US
• Steven R. Collins · Lexington, US
• Daniel P. Resler · Wilmington, US
• Linda A. Palmaccio · Carlisle, US

Key dates

• Filing date: May 24, 2013
• Grant date: Apr 25, 2017
• Expiry date: Sep 11, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2202/10
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A transmissive liquid crystal (LC) control structure comprising: a superstrate (44) having a first surface (44a) having a GaN HEMT structure disposed thereon to provide a conductor on the first surface of said superstrate; a substrate (42) having a first surface disposed over and spaced apart from the first surface of said superstrate and having a GaN HEMT structure (43) disposed thereon to provide a conductor on the first surface of said substrate and wherein the GaN HEMT structure on one of the superstrate and substrate surfaces are patterned into individual electrodes; a polymer network liquid crystal (PNLC) (48) disposed in the space between the first surface of said superstrate and the first surface of said substrate; and a control circuit coupled to the individual electrodes.