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1. 发明授权

US11031750B2 Light source device 有权
公开(公告)号：US11031750B2
公开(公告)日：2021-06-08
申请号：US16367121
申请日：2019-03-27
申请人： NICHIA CORPORATION
发明人： Norihiro Dejima , Masaki Omori
IPC分类号： G02B5/18 , H01S5/14 , G02B27/10 , G02B5/02 , H01S5/40 , H01S5/02212
摘要： 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.

2. 发明授权

US10998698B2 Light source device 有权
公开(公告)号：US10998698B2
公开(公告)日：2021-05-04
申请号：US16904886
申请日：2020-06-18
申请人： NICHIA CORPORATION
发明人： Norihiro Dejima
IPC分类号： H01S5/40 , H01S5/0625 , H01S5/14
摘要： 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.

3. 发明授权

US11594853B2 Light source unit 有权
公开(公告)号：US11594853B2
公开(公告)日：2023-02-28
申请号：US16750503
申请日：2020-01-23
申请人： NICHIA CORPORATION
发明人： Masaki Omori , Takashi Murayama , Norihiro Dejima
IPC分类号： H01S5/02251 , H01S5/00 , G02B6/42 , G02B19/00 , G02B27/30 , H01S5/40
摘要： 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.

4. 发明授权

US11387623B2 Light source device and external cavity laser module 有权
公开(公告)号：US11387623B2
公开(公告)日：2022-07-12
申请号：US16896448
申请日：2020-06-09
申请人： NICHIA CORPORATION
发明人： Norihiro Dejima , Masaki Omori , Yuto Oki
IPC分类号： H01S3/10 , H01S5/02375 , H01S5/14 , H01S5/40
摘要： An external cavity laser module is configured to emit a laser beam and includes: a collimation laser light source having a Littrow configuration; a diffraction grating configured to selectively reflect and transmit light of a specific wavelength; a support member supporting the collimation laser light source and the diffraction grating; and a base rotatably supporting the support member to correct an axial direction of the laser beam emitted from the external cavity laser module.

5. 发明授权

US11048096B2 Light source device 有权
公开(公告)号：US11048096B2
公开(公告)日：2021-06-29
申请号：US16203448
申请日：2018-11-28
申请人： NICHIA CORPORATION
发明人： Norihiro Dejima , Takahiro Oyu
IPC分类号： G02B27/09 , G02B5/18 , G02B27/10 , H01S5/14 , G02B27/30 , G02B5/10
摘要： A light source device includes: a light source part comprising a plurality of laser light sources, each laser light source being configured to emit light having a predetermined wavelength width; a plurality of collimators; a light-condensing part configured to adjust light emitted from the collimators into parallel light and to condense the parallel light; a diffraction grating configured to receive the condensed light; and an output coupler disposed in an optical path of diffracted light from the diffraction grating so as to form an external resonator with the laser light sources, wherein a reflecting surface of the output coupler is a depressed surface; and an adjusting lens disposed downstream of the output coupler, the adjusting lens being configured to convert light emitted from the output coupler into substantially parallel light or to condense the light emitted from the output coupler.

6. 发明授权

US10727648B2 Light source device 有权
公开(公告)号：US10727648B2
公开(公告)日：2020-07-28
申请号：US16427184
申请日：2019-05-30
申请人： NICHIA CORPORATION
发明人： Norihiro Dejima
IPC分类号： H01S5/40 , H01S5/0625 , H01S5/14
摘要： 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.

7. 发明申请

US20190372311A1 LIGHT SOURCE DEVICE 审中-公开
公开(公告)号：US20190372311A1
公开(公告)日：2019-12-05
申请号：US16427184
申请日：2019-05-30
申请人： NICHIA CORPORATION
发明人： Norihiro Dejima
IPC分类号： H01S5/40 , H01S5/14 , H01S5/0625
摘要： 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.

8. 发明授权

US10359584B2 Light source device 有权
公开(公告)号：US10359584B2
公开(公告)日：2019-07-23
申请号：US15721455
申请日：2017-09-29
申请人： NICHIA CORPORATION
发明人： Norihiro Dejima
IPC分类号： G02B6/42 , H01S5/40 , H01S5/14 , H01S5/343 , G02B27/10 , G02B6/036 , G02B6/02 , G02B27/30 , H01S5/024 , H01S3/081
摘要： A light source device includes: a laser diode bar comprising a plurality of strips configured to emit light in a wavelength region with a predetermined width; a light guiding part comprising a plurality of cores, each of which corresponds to a respective one of the plurality of strips, and on each of which light emitted from the respective one of the strips is incident; a diffraction grating on which light emitted from the cores is incident; and a resonator mirror on which light emitted from the diffraction grating is incident. The cores are disposed such that light emitted from the cores is incident on a region of the diffraction grating at different angles. The diffraction grating comprises a pattern configured to diffract light incident on the diffraction grating from the cores such that the diffracted light is emitted along a single optical axis.

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