公开(公告)号：US20220109285A1

公开(公告)日：2022-04-07

申请号：US17644707

申请日：2021-12-16

Applicant: DENSO CORPORATION

Inventor： Hitoshi YAMADA ,  Yoshiaki HOASHI

IPC: H01S5/042 ,  H01S5/40 ,  H01S5/02315

Abstract: A semiconductor laser light source module includes an emission unit provided with an upper electrode and a lower electrode, emitting a laser light in one direction; a laser diode having a plurality of emission units arranged in a state where emission directions of the laser light are aligned; a plurality of package side electrodes that supply current to respective emission units; and a plurality of first wires that electrically connect respective upper electrodes of the plurality of emission units with the package side electrodes corresponding to the upper electrodes individually. One first wire that connects one emission unit in the arranged emission units with one of package side electrodes corresponding to the one emission unit, and the other first wire that connects the other emission unit adjacent to the one emission unit with one of package side electrodes corresponding to the other emission unit are non-parallel in plan view.

公开(公告)号：US20210149026A1

公开(公告)日：2021-05-20

申请号：US17138699

申请日：2020-12-30

Applicant: DENSO CORPORATION

Inventor： Hitoshi YAMADA ,  Yoshiaki HOASHI ,  Fumiaki MIZUNO ,  Noriyuki OZAKI ,  Akifumi UENO

IPC: G01S7/481 ,  G02B27/30 ,  G02B26/12 ,  G02B5/10 ,  G01S7/484

Abstract: An optical distance measuring device includes a light emitting element in which a plurality of light emitting units 16 that emit light are arranged so that a gap is present between adjacent ones of the light emitting units, a transmission unit through which the light is transmitted, a drive unit that changes a positional relationship between the light emitting element and the transmission unit, and a light receiving unit that receives reflected light of the light. The drive unit changes the positional relationship between the light emitting element and the transmission unit, thereby changing an irradiation path of the light along an arrangement direction.

公开(公告)号：US20230327406A1

公开(公告)日：2023-10-12

申请号：US18193980

申请日：2023-03-31

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation ,  QD LASER, Inc.

Inventor： Hitoshi YAMADA ,  Yuki KAMATA ,  Koichi OYAMA ,  Yutaka OHNISHI ,  Kenichi NISHI ,  Keizo TAKEMASA

IPC: H01S5/34 ,  C09K11/74

CPC classification number: H01S5/3412 ,  C09K11/7492 ,  B82Y20/00

Abstract: In a semiconductor device, a quantum dot group includes a stack of plural quantum dot layers having different central wavelengths at which respective gains are maximum. A part of or all of the quantum dot layers are stacked so that the central wavelengths sequentially shifts along a stacking direction. The quantum dot group includes a longest wavelength layer group composed of some quantum dot layers including a longest wavelength layer having a longest central wavelength and at least one quantum dot layer stacked on the longest wavelength layer. The longest wavelength layer or the longest wavelength layer group has a larger gain at the central wavelength than the gain at the central wavelength of each of the other quantum dot layers.