公开(公告)号：US20170211776A1

公开(公告)日：2017-07-27

申请号：US15411492

申请日：2017-01-20

Applicant: NICHIA CORPORATION

Inventor： Yuji MATSUYAMA ,  Takashi SAKAMOTO

IPC: F21S8/10 ,  G02B27/30 ,  F21V8/00

CPC classification number: G02B27/30 ,  F21S41/14 ,  F21S41/16 ,  F21S41/19 ,  F21S41/24 ,  F21S41/285 ,  F21S41/43 ,  F21S41/657 ,  F21S45/10 ,  F21S45/47 ,  F21S45/50 ,  F21Y2115/30 ,  G02B6/0096 ,  H01S5/00 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/02212

Abstract: A light source device includes a light source unit comprising a laser element configured to emit laser light, and a cap hermetically sealing the laser element; a wavelength conversion unit comprising a fluorescent material-containing member containing a fluorescent material adapted to be excited by the laser light; a light-shielding member having a pipe shape and having a first end with a first opening and a second end with a second opening, wherein the light-shielding member defines a hollow optical waveguide between the first end and the second end, the first opening at the first end is covered by the light source unit, and the wavelength conversion unit is arranged at the second end, thereby allowing the laser light propagating through the hollow optical waveguide to reach the fluorescent material-containing member; and an optical member configured to collimate the laser light and direct collimated laser light to the hollow optical waveguide.