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Heatable lens for luminaires, and/or methods of making the same

  • US 8,939,606 B2
  • Filed: 04/02/2012
  • Issued: 01/27/2015
  • Est. Priority Date: 02/26/2010
  • Status: Expired due to Fees
First Claim
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1. A lens for a lighting system, comprising:

  • a glass substrate supporting an antireflective coating and a transparent conductive coating on first and second major surfaces thereof, respectively; and

    at least one bus bar in electrical communication with the transparent conductive coating, the at least one bus bar being configured to convey voltage to the transparent conductive coating from an external power source to, in turn, cause the transparent conductive coating to heat up,wherein the antireflective and transparent conductive coatings are sputtered coatings,wherein the substrate is heat treated together with the antireflective and transparent conductive coatings thereon; and

    wherein the transparent conductive coating comprises a layer comprising a transparent conductive oxide (TCO) sandwiched between first and second layers comprising silicon oxynitride.

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