Title:
PHOSPHOR ELEMENT AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/044426
Kind Code:
A1
Abstract:
[Problem] To increase the fluorescence intensity of emission light and suppress color unevenness of emitted white light in continued use when excitation light is made incident on a phosphor plate and fluorescence is generated. [Solution] A phosphor element 1 is provided with: a phosphor part 2 provided with an incidence surface 2a for excitation light, an opposite surface 2b opposite the incidence surface, and a side surface 2c, the phosphor part 2 converting at least a portion of excitation light incident on the incidence surface to fluorescence and causing the fluorescence to be emitted from the opposite surface or the incidence surface; and a heat-dissipating substrate 3 provided on the side surface 2c of the phosphor part 2, the heat-dissipating substrate 3 comprising a metal plating film comprising a metal having a thermal conductivity of at least 200 W/mK.
Inventors:
KONDO JUNGO (JP)
ASAI KEIICHIRO (JP)
OKADA NAOTAKE (JP)
ASAI KEIICHIRO (JP)
OKADA NAOTAKE (JP)
Application Number:
PCT/JP2018/031687
Publication Date:
March 05, 2020
Filing Date:
August 28, 2018
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
G02B5/20; F21V9/30; F21V29/70; G02B5/26; H01L33/50; H01S5/02; F21Y115/30
Domestic Patent References:
| WO2017110031A1 | 2017-06-29 | |||
| WO2014021027A1 | 2014-02-06 | |||
| WO2012006128A2 | 2012-01-12 |
Foreign References:
| JP2008186850A | 2008-08-14 | |||
| JP2008305811A | 2008-12-18 | |||
| JP2010147183A | 2010-07-01 |
Attorney, Agent or Firm:
HOSODA Masutoshi et al. (JP)
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