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ELECTROCHROMIC MIRROR

IP.com Disclosure Number: IPCOM000023216D
Original Publication Date: 1977-Feb-28
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 161K

Publishing Venue

Xerox Disclosure Journal

Abstract

An anodic film on a nickel mirror makes the mirror either re-flective or opaque depending upon the field across the anodic film. It has been found that an anodic film exists on the surface of a nickel mirror which is anodically prepolarized in a di-lute aqueous alkali solution. Optical modulation of the film is brought about by reversible electro-chemical redox reac-tions.

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XEROX DISCLOSURE JOURNAL

ELECTROCHROMIC MIRROR Proposed Classification
Anthony T. Ward U.S. Cl. 350/164
Alexander Damjanovic mt. CL G02b 1/10
J. Michael Ishler

An anodic film on a nickel mirror makes the mirror either re-
flective or opaque depending upon the field across the anodic
film.

It has been found that an anodic film exists on the surface
of a nickel mirror which is anodically prepolarized in a di-
lute aqueous alkali solution. Optical modulation of the film
is brought about by reversible electro-chemical redox reac-
tions.

Whenever the film is about 500 angstroms thick the change in
optical characteristics is visible to the naked eye and is
stable until the voltage is changed. A voltage change of as
little as about 0.6 volts is sufficient to change the optical
property of the anodic film.

Volume 2 Number 1 January/February 1977 51

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