公开(公告)号：US11024777B2

公开(公告)日：2021-06-01

申请号：US16399790

申请日：2019-04-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuhiko Yamanaka ,  Kenichi Matsumoto ,  Hideo Yamaguchi ,  Wakahiko Okazaki ,  Yasuhiko Enami ,  Taku Kobayashi ,  Kazuki Adachi ,  Hirotaka Ueno

IPC: H01L33/50 ,  H01L33/36 ,  G02B5/20 ,  H01L33/58 ,  H05B33/08 ,  B60Q11/00 ,  H01S5/022 ,  F21V23/00 ,  B60Q1/04 ,  H05B45/37 ,  H05B45/18

Abstract: A light source device includes a mounted substrate which is a multi-layered substrate, a semiconductor light-emitting device which emits a laser beam, a wavelength-converting member which radiates fluorescence by being irradiated with the laser beam emitted from the semiconductor light-emitting device as an excitation light, a state detection circuit, an electric field effect type transistor which adjusts an electric current amount applied to the semiconductor light-emitting device upon receipt of an output from the state detection circuit, and an external connecting member, and the semiconductor light-emitting device, the state detection circuit, the transistor, and the external connecting member are mounted on the single mounted substrate.