Search International and National Patent Collections

1. (WO2017154807) LIGHT SOURCE DEVICE

Pub. No.:    WO/2017/154807    International Application No.:    PCT/JP2017/008659
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: F21S 2/00
F21S 8/10
F21V 9/16
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: KASUGAI Hideki
春日井 秀紀
FUKAKUSA Masaharu
深草 雅春
KOGA Toshihiro
古賀 稔浩
NAGASAKI Yoshihisa
長崎 純久
YAMANAKA Kazuhiko
山中 一彦
Title: LIGHT SOURCE DEVICE
Abstract:
This light source device (100) is provided with a semiconductor light-emitting element (101), a condenser optical system (102) for condensing excitation light (121) emitted from the semiconductor light-emitting element (101), and a wavelength conversion element (103) on which the excitation light (121) is irradiated. The wavelength conversion element (103) is provided with a first wavelength conversion region (111) on which a main light ray (122) is incident, and a second wavelength conversion region (112) on which excitation light (121) other than the main light ray (122) is incident, the second wavelength conversion region (112) being disposed around the first wavelength conversion region (111), the wavelength conversion efficiency of the second wavelength conversion region (112) being less than that of the first wavelength conversion region (111).