Title:
WAVELENGTH CONVERSION ELEMENT AND METHOD FOR MANUFACTURING WAVELENGTH CONVERSION ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/221062
Kind Code:
A1
Abstract:
The present disclosure pertains to a wavelength conversion element that converts applied excitation light to light having different wavelengths. The wavelength conversion element is provided with a base material having an upper surface and a wavelength conversion member disposed on the upper surface of the base material. The wavelength conversion member includes: a fluorescent body including a plurality of fluorescent particles; molten glass that is in contact with the fluorescent particles and joins the fluorescent particles; and gaps present between the fluorescent particles, in the molten glass, and/or between the fluorescent particles and the molten glass. In a cross-sectional view of the wavelength conversion member, the maximum value of the areas of the gaps is less than the maximum value of the areas of the fluorescent particles.
Inventors:
NIINO NORITAKA (JP)
Application Number:
PCT/JP2021/016818
Publication Date:
November 04, 2021
Filing Date:
April 27, 2021
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
G02B5/20; G02B5/08
Domestic Patent References:
| WO2017126440A1 | 2017-07-27 | |||
| WO2017126441A1 | 2017-07-27 | |||
| WO2017068765A1 | 2017-04-27 |
Foreign References:
| JP2019105826A | 2019-06-27 | |||
| JP2016134571A | 2016-07-25 | |||
| JP2012222050A | 2012-11-12 | |||
| JP2011529266A | 2011-12-01 | |||
| JP2015215583A | 2015-12-03 | |||
| JP2013247067A | 2013-12-09 | |||
| JP2013035953A | 2013-02-21 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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