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Method of and apparatus for emitting light in ice

  • US 4,667,481 A
  • Filed: 08/20/1985
  • Issued: 05/26/1987
  • Est. Priority Date: 09/11/1984
  • Status: Expired due to Term
First Claim
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1. A method of emitting light in ice, wherein light emission sources are provided in the ice and the surface of the ice is made luminant by the light emitted from said sources and transmitted through the ice, characterized in that a temperature of ice on the surface of ice is measured and an illumination intensity on the surface of ice and therearound is measured, whereby a brightness of said sources is controlled on the basis of the results of measuring of the temperature of ice and the illumination intensity.

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