Lighting device, method and light wavelength conversion wheel assembly for color tuning thereof
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United States of America Patent
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Jun 30, 2015
Grant Date -
Sep 13, 2012
app pub date -
Nov 19, 2010
filing date -
Nov 19, 2009
priority date (Note) -
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Abstract
A lighting device, a method and a light wavelength conversion wheel assembly for color tuning thereof. The lighting device includes a light source which includes an excitation light source and a moving unit. The moving unit includes a light wavelength conversion wheel assembly having a heat dissipation base. The heat dissipation base is divided into a number of segments carrying different wavelength conversion materials, and is controlled to rotate intermittently or rotate to a predetermined angle around a wheel shaft serving as an axis. The heat dissipation base faces the exciting light and is illuminated locally. A control unit controls the rotation so that a predetermined area is rotated into the illumination area of the exciting light. Output light of a predetermined color is provided by the excitation light source and the predetermined area or the wavelength conversion material located in the predetermined area.
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