Full spectrum solid state white light source, method for manufacturing and applications
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United States of America Patent
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Aug 1, 2017
Grant Date -
May 9, 2013
app pub date -
Jul 19, 2011
filing date -
Jul 19, 2010
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Abstract
A method of manufacturing a down-conversion substrate for use in a light system includes forming a first crystallography layer including one or more phosphor materials and, optionally, applying at least one activator to the crystallography layer, heating the crystallography layer at high temperature to promote crystal growth in the crystallography layer, and drawing out the crystallography layer and allowing the crystallography layer to cool to form the down-conversion substrate. A light system includes an excitation source for emitting short wavelength primary emissions; and a down-conversion substrate disposed in the path of at least some of the primary emissions from the excitation source to convert at least a portion of the primary emissions into longer-wavelength secondary emissions, wherein the substrate includes one or more crystallography layers, wherein each crystallography layer includes one or more phosphor materials, and optionally at least one activator. Down-converted secondary light may be produced by the system.
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