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Color tunable light emitting device

  • US 20090086475A1
  • Filed: 10/01/2007
  • Published: 04/02/2009
  • Est. Priority Date: 10/01/2007
  • Status: Active Grant
First Claim
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1. A color tunable light emitting device comprising:

  • an excitation source operable to generate light of a first wavelength range and a wavelength converting component comprising at least one phosphor material which is operable to convert at least a part of the light into light of a second wavelength range, wherein light emitted by the device comprises the combined light of the first and second wavelength ranges, wherein the wavelength converting component has a wavelength converting property that varies spatially and wherein color of light generated by the source is tunable by a relative movement of the wavelength converting component and excitation source such that the light of the first wavelength range is incident on a different part of the wavelength converting component.

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