Search International and National Patent Collections

1. (WO2018179540) LIGHT-EMITTING ELEMENT AND LIGHT-EMITTING DEVICE

Pub. No.:    WO/2018/179540    International Application No.:    PCT/JP2017/037787
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Oct 20 01:59:59 CEST 2017
IPC: G02B 5/20
F21S 2/00
F21V 9/10
F21V 9/16
G03B 21/00
G03B 21/14
H01L 33/50
H01S 5/02
F21Y 115/10
F21Y 115/30
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: ICHIHASHI Kouki
市橋 宏基
HAYASHI Katsuhiko
林 克彦
Title: LIGHT-EMITTING ELEMENT AND LIGHT-EMITTING DEVICE
Abstract:
A light-emitting element (10) emits fluorescence on the basis of excitation light. The light-emitting element (10) is provided with a periodic structure (5) including a plurality of phosphor layers (11) and a plurality of object layers (12). The plurality of phosphor layers (11) includes a phosphor for emitting fluorescence. The plurality of object layers (12) has a refractive index different from the refractive index of the plurality of phosphor layers (11). The plurality of phosphor layers (11) and the plurality of object layers (12) are periodically layered in alternating fashion so that a plurality of peaks in the intensity distribution of an electric field of the excitation light when the excitation light is incident on the periodic structure (5) is positioned on the plurality of object layers (12).