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Broad spectrum reflective coating for an electric lamp

  • US 6,534,903 B1
  • Filed: 02/25/2002
  • Issued: 03/18/2003
  • Est. Priority Date: 02/25/2002
  • Status: Expired due to Fees
First Claim
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1. An interference coating for reflecting both visible light and infrared radiation comprising:

  • a dichroic structure including a plurality of layers of a material having a low index of refraction, and a plurality of layers of a material having a high index of refraction, the coating having an average spectral high reflectance of at least 80% for wavelengths in the visible light section of the electromagnetic spectrum and of at least 50% for wavelengths in a portion of the infrared section of the electromagnetic spectrum at least 150 nm wide.

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