Methods and apparatus for controlling illumination

  • US 20020171378A1
  • Filed: 10/25/2001
  • Published: 11/21/2002
  • Est. Priority Date: 08/26/1997
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus, comprising:

  • at least one light source to generate variable color radiation without requiring the use of a color filter, the at least one light source being adapted such that at least a color of the variable color radiation is controllable based on at least one interruption of power supplied to the apparatus.

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