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VARIABLE NEUTRAL DENSITY DEVICE

IP.com Disclosure Number: IPCOM000023025D
Original Publication Date: 1976-Jun-30
Included in the Prior Art Database: 2004-Mar-27

Publishing Venue

Xerox Disclosure Journal

Abstract

Cascaded, partially twisted nematic elements are provided between crossed polarizers to provide a variable neutral density device, Each of the partially twisted nematic elements comprises a twisted nematic sandwiched between two electrodes,