Illumination device
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United States of America Patent
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Jul 17, 2018
Grant Date -
May 14, 2015
app pub date -
Nov 5, 2014
filing date -
Nov 8, 2013
priority date (Note) -
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Abstract
Provided is an illumination device containing a light source configured to emit an excitation light, a phosphor layer containing a phosphor and configured to allow the excitation light of the light source to be transmitted and emitted therethrough, and a coating film formed by applying a paint containing a pigment and mica and configured to allow the emitted light of the phosphor layer to be transmitted and emitted therethrough, in which the coating film has a light transmission spectrum having a peak wavelength located between a peak wavelength of an emission spectrum of the light source and a peak wavelength of an emission spectrum of the phosphor layer.
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