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1. (WO2017038164) LIGHT-EMITTING DEVICE

Pub. No.:    WO/2017/038164    International Application No.:    PCT/JP2016/064608
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed May 18 01:59:59 CEST 2016
IPC: F21V 9/16
C09K 11/80
F21S 2/00
F21V 7/22
G02B 5/20
G02B 5/26
G02B 5/28
H01S 5/022
F21W 101/10
F21Y 115/30
Applicants: SHARP KABUSHIKI KAISHA
シャープ株式会社
Inventors: KAWAGUCHI, Yoshinobu
川口 佳伸
ANNEN, Kazunori
安念 一規
TAKAHASHI, Koji
高橋 幸司
TAKAHIRA, Yoshiyuki
高平 宜幸
MAEMURA, Yosuke
前村 要介
SAKAUE, Tomohiro
坂上 智洋
Title: LIGHT-EMITTING DEVICE
Abstract:
The objective of the invention is to reduce color irregularities in an illumination light emitted from the light-emitting device when a phosphor layer comprising a small-gap phosphor plate is used. The light-emitting device (100) emitting a laser light (L1) as part of the illumination light comprises: semiconductor lasers (10a to 10c) emitting a laser light (L1) which is visible radiation; a phosphor layer (1a) comprising a small-gap phosphor plate receiving the laser light (L1) emitted from the semiconductor lasers (10a to 10c) and generating fluorescent light (L2); and an excitation light distribution control portion (1b) controlling the light distribution of the laser light (L1) and guiding the laser light (L1) into the phosphor layer (1a). The small-gap phosphor plate is a phosphor plate wherein the gaps present within have widths of 0 nm to one-tenth the wavelength of the laser light (L1) inclusive.