公开(公告)号：US12300968B2

公开(公告)日：2025-05-13

申请号：US17672772

申请日：2022-02-16

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Atsushi Sugiyama ,  Takahide Ochiai ,  Tadataka Edamura ,  Naota Akikusa

IPC: H01S5/14 ,  H01S5/02253 ,  H01S5/02326 ,  H01S5/02345 ,  H01S5/34

Abstract: The laser module includes a QCL element, a MEMS diffraction grating, a lens holder for holding a lens disposed between the QCL element and the MEMS diffraction grating, and a package. The package includes a bottom wall, a side wall erected on the bottom wall and formed in an annular shape so as to surround a region in which the QCL element is accommodated, and a top wall closing an opening of the side wall on a side opposite to a side where the bottom wall is disposed. The top wall faces the bottom wall in a direction orthogonal to the optical axis direction of the lens, and the distance between the top wall and a surface of the lens holder on a side where the top wall is disposed is smaller than a thickness of the lens holder along the optical axis direction of the lens.

公开(公告)号：US20240356306A1

公开(公告)日：2024-10-24

申请号：US18630166

申请日：2024-04-09

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takahide OCHIAI ,  Atsushi SUGIYAMA ,  Tadataka Edamura

IPC: H01S5/34 ,  H01S5/02216 ,  H01S5/02253 ,  H01S5/14

CPC classification number: H01S5/3402 ,  H01S5/02216 ,  H01S5/02253 ,  H01S5/141

Abstract: A laser module includes a QCL element, a diffraction grating portion, a first lens member configured to be disposed between the first end face and the diffraction grating portion, and a second lens member configured to be disposed at a position facing a second end face of the QCL element, and a package configured to house the QCL element, the diffraction grating portion, and the first lens member. A distance in an X-axis direction between an incident surface of the first lens member on which the first light is incident and the first end face is shorter than a distance in the X-axis direction between an incident surface of the second lens member on which the third light is incident and the second end face.

公开(公告)号：US20240356301A1

公开(公告)日：2024-10-24

申请号：US18630238

申请日：2024-04-09

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Atsushi SUGIYAMA ,  Takahide Ochiai ,  Tadataka Edamura

IPC: H01S5/02253 ,  H01S5/02216 ,  H01S5/14 ,  H01S5/34

CPC classification number: H01S5/02253 ,  H01S5/02216 ,  H01S5/141 ,  H01S5/3402

Abstract: A laser module according to an embodiment includes a QCL element, a diffraction grating portion configured to diffract and reflect first light emitted from a first end face of the QCL element and return second light to the first end face, and a first portion configured to be disposed between the first end face and the diffraction grating portion, allow the first light and the second light to pass therethrough, and collimate the first light. When viewed from a Y-axis direction, the diffraction grating portion is inclined with respect to a Z-axis direction. A position of a beam waist of the first light collimated by the first portion in an X-axis direction is located between a position of one end of the diffraction grating portion in the Z-axis direction and a position of the other end of the diffraction grating portion in the Z-axis direction.

公开(公告)号：US12119612B2

公开(公告)日：2024-10-15

申请号：US17414070

申请日：2019-12-11

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Akio Ito ,  Yoshitaka Kurosaka ,  Masahiro Hitaka ,  Kazuyoshi Hirose ,  Tadataka Edamura

IPC: H01S3/10 ,  H01S5/0236 ,  H01S5/026 ,  H01S5/042 ,  H01S5/11 ,  H01S5/343 ,  G06F30/10

CPC classification number: H01S5/026 ,  H01S5/0236 ,  H01S5/04254 ,  H01S5/04256 ,  H01S5/11 ,  H01S5/34333 ,  G06F30/10 ,  H01S5/3436

Abstract: The light-emitting element of an embodiment outputs a clear optical image while suppressing light output efficiency reduction, and includes a substrate, a light-emitting unit, and a bonding layer. The light-emitting unit has a semiconductor stack, including a phase modulation layer, between first and second electrodes. The phase modulation layer has a base layer and modified refractive index regions, and includes a first region having a size including the second electrode, and a second region. Each gravity center of the second region's modified refractive index region is arranged by an array condition. The light from the stack is a single beam, and regarding a first distance from the substrate to the stack's front surface and a second distance from the substrate to the stack's back surface, a variation amount of the first distance along a direction on the substrate is smaller than a variation amount of the second distance.

公开(公告)号：USD960009S1

公开(公告)日：2022-08-09

申请号：US29750378

申请日：2020-09-14

Applicant: HAMAMATSU PHOTONICS K.K.

Designer： Tatsuo Dougakiuchi ,  Akio Ito ,  Masahiro Hitaka ,  Tadataka Edamura

公开(公告)号：USD960007S1

公开(公告)日：2022-08-09

申请号：US29749999

申请日：2020-09-10

Applicant: HAMAMATSU PHOTONICS K.K.

Designer： Tatsuo Dougakiuchi ,  Akio Ito ,  Masahiro Hitaka ,  Tadataka Edamura

公开(公告)号：USD892657S1

公开(公告)日：2020-08-11

申请号：US29684297

申请日：2019-03-20

Applicant: HAMAMATSU PHOTONICS K.K.

Designer： Tatsuo Dougakiuchi ,  Akio Ito ,  Masahiro Hitaka ,  Tadataka Edamura

公开(公告)号：US10673002B2

公开(公告)日：2020-06-02

申请号：US15489776

申请日：2017-04-18

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Shigeo Hara ,  Wataru Akahori ,  Takahiko Yamanaka ,  Tadataka Edamura

IPC: H01L51/42 ,  H01L51/00

Abstract: Organic photoelectric conversion element has a first electrode, a photoelectric conversion layer, and a second electrode. The photoelectric conversion layer has a first organic layer that contains a first organic semiconductor containing principally a p-type organic semiconductor, a second organic layer that contains a second organic semiconductor containing principally an n-type organic semiconductor, and an intermediate layer that contains the first organic semiconductor and the second organic semiconductor. The second organic layer is disposed at a side of the second electrode relative to the first organic layer. The intermediate layer is between the first organic layer and the second organic layer and reaches each of these layers. The thickness of the second organic layer is greater than the sum of the thicknesses of the first organic layer and intermediate layer.

公开(公告)号：US20240356307A1

公开(公告)日：2024-10-24

申请号：US18630207

申请日：2024-04-09

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takahide Ochiai ,  Atsushi Sugiyama ,  Tadataka Edamura

IPC: H01S5/34 ,  H01S5/00 ,  H01S5/02216 ,  H01S5/02253 ,  H01S5/14

CPC classification number: H01S5/3402 ,  H01S5/0064 ,  H01S5/02216 ,  H01S5/02253 ,  H01S5/141

Abstract: A laser module according to an embodiment includes a QCL element, a diffraction grating portion configured to diffract and reflect first light emitted from a first end face of the QCL element and return second light as a part of the first light to the first end face, a lens member configured to be disposed between the first end face and the diffraction grating portion and allow the first light and the second light to pass therethrough, and a lens holder configured to support the lens member. The lens member includes a first portion configured to constitute a collimator lens collimating the first light, and a second portion configured to be connected to an outer edge portion of the first portion and not to constitute the collimator lens when viewed from an X-axis direction.

公开(公告)号：US10574030B2

公开(公告)日：2020-02-25

申请号：US16051547

申请日：2018-08-01

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Tadataka Edamura ,  Atsushi Sugiyama ,  Tatsuo Dougakiuchi

IPC: H01S5/14 ,  H01S5/026 ,  G01J3/10 ,  G01J3/42 ,  H01S5/062 ,  H01S5/0625 ,  H01S5/34 ,  G01N21/39

Abstract: An external resonance type laser module includes a quantum cascade laser, a MEMS diffraction grating configured to include a diffraction/reflection portion configured to diffract and reflect light emitted from the quantum cascade laser and return a part of the light to the quantum cascade laser by swinging the diffraction/reflection portion, and a controller configured to control driving of the quantum cascade laser. The controller is configured to pulse-drive the quantum cascade laser such that pulsed light of a second frequency higher than a first frequency at which the diffraction/reflection portion swings is emitted from the quantum cascade laser and a phase of the pulsed light changes each time the diffraction/reflection portion reciprocates m times (m: an integer of 1 or more).