Title:
照明装置
Document Type and Number:
Japanese Patent JP6769449
Kind Code:
B2
Abstract:
A lighting apparatus includes light emitting elements having an emission peak wavelength of 400 to 510 nm, a first phosphor having an emission peak wavelength of 485 to 700 nm, a second phosphor having an emission peak wavelength of 510 to 590 nm, a third phosphor having an emission peak wavelength of 600 to 700 nm, and a color filter having transmittance for light with a wavelength of 600 to 730 nm that is 80% or more and transmittance for light with a wavelength of 410 to 480 nm that is 3% or more and 50% or less. The color filter transmits a part of light emitted from the first phosphor, at least a part of light emitted from the second phosphor, and at least a part of light emitted from the third phosphor. Light transmitted through the color filter is emitted to the outside.
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Inventors:
Daisuke Iwakura
Application Number:
JP2018013643A
Publication Date:
October 14, 2020
Filing Date:
January 30, 2018
Export Citation:
Assignee:
Nichia Corporation
International Classes:
F21S43/20; F21S43/14; F21V3/00; F21V3/06; F21V9/08; F21V23/00; G02B5/20; H01L33/00
Domestic Patent References:
JP2014143344A | ||||
JP2002133915A | ||||
JP2015002182A | ||||
JP2005123165A | ||||
JP2003031008A | ||||
JP2015088483A |
Foreign References:
WO2015111483A1 |
Attorney, Agent or Firm:
Isono International Patent and Trademark Office