FLUORESCENT LIGHT SOURCE APPARATUS
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United States of America Patent
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Oct 9, 2015
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Oct 27, 2014
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Abstract
An object of the present invention is to provide a fluorescent light source apparatus that is capable of efficiently cooling a fluorescent member and holding the fluorescent member at a proper position relative to a reflector and is thus capable of stably providing a high light output over a long period of time. A fluorescent light source apparatus according to the present invention has a configuration in which a fluorescent member that generates fluorescence upon application of excitation light thereto and a reflector having a reflective surface disposed so as to face an excitation light receiving surface of the fluorescent member are held by a common holding structure formed of a heat conductive material. The holding structure includes a cylindrical base part, and a heat conducting part formed so as to extend from an inner circumferential surface of the base part toward a center axis of the base part. The fluorescent member is held so as to be positioned on the center axis of the base part, on a side surface of the heat conducting part of the holding structure, the side surface facing the reflective surface of the reflector.
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