Wavelength conversion element, light source device, and projector
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
Jan 30, 2017
filing date -
Feb 5, 2016
priority date (Note) -
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Abstract
A wavelength conversion element includes: a wavelength conversion layer; a light-transmissive member provided on a light-incident surface side of the wavelength conversion layer and including a support surface including an inclined portion inclined with respect to the light-incident surface; and a first reflection portion provided along the support surface and reflecting fluorescence light. The first reflection portion includes a dichroic film that transmits excitation light. The excitation light passes through the dichroic film and the light-incident surface in this order to enter the wavelength conversion layer. Defining a plane including the light-incident surface as a reference surface, a distance between the reference surface and the first reflection portion in a periphery region of the first reflection portion is smaller than a distance between the reference surface and the first reflection portion in a central region of the first reflection portion.
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