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Title: Method for making glass nonfogging

Abstract

A method for rendering glass nonfogging (to condensation fog) by sandwiching the glass between two electrodes such that the glass functions as the dielectric of a capacitor, a large alternating current (AC) voltage is applied across the electrodes for a selected time period causing the glass to absorb a charge, and the electrodes are removed. The glass absorbs a charge from the electrodes rendering it nonfogging. The glass surface is undamaged by application of the AC voltage, and normal optical properties are unaffected. This method can be applied to optical surfaces such as lenses, auto windshields, mirrors, etc., wherever condensation fog on glass is a problem.

Inventors:
 [1];  [1];  [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
863429
Patent Number(s):
4169280
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL E06B - FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01G - CAPACITORS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; glass; nonfogging; rendering; condensation; fog; sandwiching; electrodes; functions; dielectric; capacitor; alternating; current; voltage; applied; selected; time; period; causing; absorb; charge; removed; absorbs; surface; undamaged; application; normal; optical; properties; unaffected; surfaces; lenses; auto; windshields; mirrors; etc; wherever; selected time; glass surface; time period; alternating current; optical properties; optical surfaces; optical surface; glass nonfogging; /361/307/

Citation Formats

Lord, David E, Carter, Gary W, and Petrini, Richard R. Method for making glass nonfogging. United States: N. p., 1979. Web.
Lord, David E, Carter, Gary W, & Petrini, Richard R. Method for making glass nonfogging. United States.
Lord, David E, Carter, Gary W, and Petrini, Richard R. Mon . "Method for making glass nonfogging". United States. https://www.osti.gov/servlets/purl/863429.
@article{osti_863429,
title = {Method for making glass nonfogging},
author = {Lord, David E and Carter, Gary W and Petrini, Richard R},
abstractNote = {A method for rendering glass nonfogging (to condensation fog) by sandwiching the glass between two electrodes such that the glass functions as the dielectric of a capacitor, a large alternating current (AC) voltage is applied across the electrodes for a selected time period causing the glass to absorb a charge, and the electrodes are removed. The glass absorbs a charge from the electrodes rendering it nonfogging. The glass surface is undamaged by application of the AC voltage, and normal optical properties are unaffected. This method can be applied to optical surfaces such as lenses, auto windshields, mirrors, etc., wherever condensation fog on glass is a problem.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

Patent:

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