Title:
光源装置
Document Type and Number:
Japanese Patent JP7060799
Kind Code:
B2
Abstract:
A light source device includes: a plurality of laser light sources, each configured to emit a light beam; a plurality of collimating lenses, each configured to collimate the light beam emitted from a corresponding one of the laser light sources; a first transmission diffraction grating configured to diffract and combine, in an identical diffraction angle direction, the light beams transmitted through the collimating lenses and incident on a single region at different incident angles; a sensor configured to detect a positional deviation in diffracted light beams that are diffracted and combined by the first transmission diffraction grating; and a plurality of wavelength selecting elements, each disposed on an optical path between a respective one of the collimating lenses and the first transmission diffraction grating and configured to select a wavelength of a corresponding one of the light beams incident on the first transmission diffraction grating.
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Inventors:
Norihiro Dejima
Application Number:
JP2018104572A
Publication Date:
April 27, 2022
Filing Date:
May 31, 2018
Export Citation:
Assignee:
Nichia Corporation
International Classes:
H01S5/0687; G02B27/42; H01L31/0232; H01S5/022; H01S5/323; H01S5/40
Domestic Patent References:
| JP2006352007A | ||||
| JP2013007830A | ||||
| JP2011237374A | ||||
| JP2007109923A | ||||
| JP62005677A | ||||
| JP2017126619A | ||||
| JP2006286869A | ||||
| JP2011035315A | ||||
| JP2010122473A | ||||
| JP8204644A |
Foreign References:
| US6907051 | ||||
| WO2017134911A1 | ||||
| CN204156286U | ||||
| WO2017075234A1 |
Attorney, Agent or Firm:
Okuda Seiji
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