公开(公告)号：US20200244037A1

公开(公告)日：2020-07-30

申请号：US16750503

申请日：2020-01-23

Applicant: NICHIA CORPORATION

Inventor： Masaki OMORI ,  Takashi MURAYAMA ,  Norihiro DEJIMA

IPC: H01S5/022 ,  H01S5/40 ,  G02B6/42 ,  G02B19/00 ,  G02B27/30

Abstract: A light source unit includes: a sealed semiconductor laser package including a laser diode that includes an emitter region from which laser light is emitted, the emitter region located at a surface of the laser diode, and a window member configured to transmit the laser light; a first lens structure configured to receive the laser light transmitted through the window member and create an image of the emitter region on an image plane; and a second lens structure configured to convert the laser light having passed through the image plane into a collimated or converged beam, and to emit the collimated or converged beam.

公开(公告)号：US20190305517A1

公开(公告)日：2019-10-03

申请号：US16367121

申请日：2019-03-27

Applicant: NICHIA CORPORATION

Inventor： Norihiro DEJIMA ,  Masaki OMORI

IPC: H01S5/14 ,  G02B27/10 ,  G02B5/18 ,  G02B5/02 ,  H01S5/40

Abstract: A light source device includes: a plurality of laser sources; a plurality of collimating parts, each configured to collimate the light beam emitted from a corresponding one of the laser sources; a combining grating configured to diffract, at an identical diffraction angle, light beams that have passed through the collimating parts and are incident on the combining grating at different incident angles, to combine the diffracted light beams; and a plurality of plane transmission gratings, wherein each of the plane transmission gratings is disposed in an optical path between a corresponding one of the collimating parts and the combining grating, and wherein each of the plane transmission gratings is adjustable so as to allow selection of a wavelength of the light beam incident on the combining grating.