公开(公告)号：US20230080194A1

公开(公告)日：2023-03-16

申请号：US17797885

申请日：2021-02-05

Applicant: STANLEY ELECTRIC CO., LTD.

Inventor： Yusuke YOKOBAYASHI ,  Yasuyuki KAWAKAMI ,  Yosuke MAEMURA ,  Hideaki YAMAMOTO ,  Keijiro TAKASHIMA ,  Ryosuke KAMAKURA

IPC: F21V7/30 ,  F21V9/35 ,  F21K9/64 ,  H01S5/0239

Abstract: An optical device includes a metal reflective layer substantially made of a metal material, a first light transmissive layer disposed on the metal reflective layer, an optical multilayer reflective film disposed on the first light transmissive layer and including a plurality of sublayers stacked on each other and having different refractive indexes, and a wavelength converting layer disposed on the optical multilayer reflective film and containing a fluorescent material capable of absorbing incident excitation light and generating fluorescent light having a lower energy. The wavelength converting layer is capable of generating mixed light containing the excitation light and the fluorescent light in response to irradiation with the excitation light.