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1. WO2020065927 - PHOSPHOR ELEMENT, METHOD FOR PRODUCING SAME, AND LIGHTING DEVICE

Publication Number WO/2020/065927
Publication Date 02.04.2020
International Application No. PCT/JP2018/036331
International Filing Date 28.09.2018
IPC
H01S 5/022 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
02Structural details or components not essential to laser action
022Mountings; Housings
F21V 7/26 2018.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
7Reflectors for light sources
22characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
24characterised by the material
26the material comprising photoluminescent substances
G02B 5/20 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
20Filters
H01L 33/50 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
48characterised by the semiconductor body packages
50Wavelength conversion elements
F21Y 115/30 2016.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V124
115Light-generating elements of semiconductor light sources
30Semiconductor lasers
CPC
F21V 7/26
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
7Reflectors for light sources
22characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
24characterised by the material
26the material comprising photoluminescent substances
F21V 7/30
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
7Reflectors for light sources
22characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
28characterised by coatings
30the coatings comprising photoluminescent substances
G02B 1/111
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
1Optical elements characterised by the material of which they are made
10Optical coatings produced by application to, or surface treatment of, optical elements
11Anti-reflection coatings
111using layers comprising organic materials
G02B 5/20
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
20Filters
H01L 33/50
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
48characterised by the semiconductor body packages
50Wavelength conversion elements
H01S 5/022
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
02Structural details or components not essential to laser action
022Mountings; Housings
Applicants
  • 日本碍子株式会社 NGK INSULATORS, LTD. [JP]/[JP]
Inventors
  • 近藤 順悟 KONDO Jungo
  • 岡田 直剛 OKADA Naotake
  • 岩田 雄一 IWATA Yuichi
  • 浅井 圭一郎 ASAI Keiichiro
Agents
  • 細田 益稔 HOSODA Masutoshi
  • 青木 純雄 AOKI Sumio
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PHOSPHOR ELEMENT, METHOD FOR PRODUCING SAME, AND LIGHTING DEVICE
(FR) ÉLÉMENT DE LUMINOPHORE, SON PROCÉDÉ DE PRODUCTION ET DISPOSITIF D'ÉCLAIRAGE
(JA) 蛍光体素子、その製造方法および照明装置
Abstract
(EN)
[Problem] To increase the fluorescence intensity of emitted light and minimize color irregularity in emitted white light when excitation light is made to enter a reflective phosphor element and fluorescence is generated. [Solution] A phosphor element 1 is provided with: a phosphor section 2 that is provided with an entry surface 2a for excitation light, a facing surface 2b facing the entry surface, and a side surface 2c, that converts at least some excitation light entering the entry surface into fluorescence, and that causes the fluorescence to be emitted from the entry surface; a single low refractive index layer 3 that is present on the side surface 2c and the facing surface 2b of the phosphor section 2, and that has a lower refractive index than the refractive index of the phosphor section 2; and a single reflective film 4 that covers the surface of the low refractive index layer 3. The area AI of the entry surface 2a of the phosphor section 2 is larger than the area AR of the facing surface 2b.
(FR)
L’invention aborde le problème de l’accroissement de l’intensité de fluorescence de la lumière émise et de la diminution de l’irrégularité de couleurs de la lumière blanche émise lorsque la lumière d’excitation est rendue incidente sur un élément de luminophore réflecteur et que de la fluorescence est générée. La solution selon l'invention porte sur un élément de luminophore 1 qui comporte : une section de luminophore 2 qui comprend une surface d'entrée 2a pour une lumière d'excitation, une surface faisant face 2b qui fait face à la surface d'entrée, et une surface latérale 2c, qui convertit au moins une partie de la lumière d'excitation entrant dans la surface d'entrée en fluorescence, et qui amène la fluorescence à être émise à partir de la surface d'entrée ; une couche unique d'indice de réfraction faible 3 qui est présente sur la surface latérale 2c et la surface faisant face 2b de la section de luminophore 2 et qui a un indice de réfraction inférieur à l'indice de réfraction de la section de luminophore 2 ; et un film réfléchissant unique recouvrant la surface de la couche à faible indice de réfraction 3. La zone AI de la surface d'entrée 2a de la section de luminophore 2 est plus grande que la zone AR de la surface faisant face 2b.
(JA)
【課題】反射型蛍光体素子に対して励起光を入射させて蛍光を発生させるのに際して、出射光の蛍光強度を高くし,出射する白色光の色ムラを抑制する。 【解決手段】蛍光体素子1は、励起光の入射面2a、入射面に対向する対向面2bおよび側面2cを備えている蛍光体部2であって、入射面に入射する励起光の少なくとも一部を蛍光に変換し、蛍光を入射面から出射させる蛍光体部2、蛍光体部2の側面2c上および対向面2b上にあり、蛍光体部2の屈折率よりも低い屈折率を有する一体の低屈折率層3、および低屈折率層3の表面を被覆する一体の反射膜4を備える。蛍光体部2の入射面2aの面積AIが対向面2bの面積ARよりも大きい。
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