公开(公告)号：US20210167576A1

公开(公告)日：2021-06-03

申请号：US17108872

申请日：2020-12-01

Applicant: NICHIA CORPORATION

Inventor： Yoshihiro KIMURA ,  Tadaaki MIYATA

IPC: H01S5/0683 ,  H01S5/022 ,  H01S5/40

Abstract: A light source device includes: first and second laser diodes; a reflector having: first and second reflecting faces configured to reflect a portion of light from the respective first and second laser diodes and to transmit a portion of the light from the respective first and second laser diodes, and first and second exit faces configured to allow the portions of the light transmitted through the respective first and second reflecting faces to exit; and a photodetector including: first and second light receiving element configured to receive light exiting the first and second exit faces, respectively. The reflector is configured such that the light transmitted through the first reflecting face is hindered from exiting the second exit face and the light transmitted through the second reflecting face is hindered from exiting the first exit face.

公开(公告)号：US20180366903A1

公开(公告)日：2018-12-20

申请号：US16007964

申请日：2018-06-13

Applicant: NICHIA CORPORATION

Inventor： Tadaaki MIYATA ,  Yoshihiro KIMURA

IPC: H01S5/022

CPC classification number: H01S5/02292 ,  H01S5/0216 ,  H01S5/02216 ,  H01S5/02296

Abstract: A light source device includes: a base member; a semiconductor laser mounted on an upper surface of the base member; a lateral wall portion having: a lower surface facing the upper surface of the base member and being a non-reflecting surface, and a reflecting surface that reflects light emitted from the semiconductor laser, is connected to the lower surface of the lateral wall portion at a lower end portion of the reflecting surface, and is inclined with respect to the upper surface of the base member; a first bonding film that is a metal film disposed in a region on the upper surface of the base member facing the lower surface of the lateral wall portion; a second bonding film that is a metal film disposed on the lower surface of the lateral wall portion; and a metal bonding member fuse-bonded to the first bonding film and the second bonding film to each other. An end portion of the first bonding film at a reflecting-surface side and an end portion of the second bonding film at the reflecting-surface side are located separately from the lower end portion of the reflecting surface. A distance between the end portion of the first bonding film at the reflecting-surface side and the lower end portion of the reflecting surface is different from a distance between the end portion of the second bonding film at the reflecting-surface side and the lower end portion of the reflecting surface.