Light-emitting device, optical device, and information processing apparatus

    公开(公告)号:US11605936B2

    公开(公告)日:2023-03-14

    申请号:US16953297

    申请日:2020-11-19

    Inventor: Daisuke Iguchi

    Abstract: A light-emitting device includes an insulating base member having thermal conductivity of 10 W/m·K or more; a light-emitting element that has a cathode electrode and an anode electrode and is provided on a front surface side of the base member; a capacitive element that is provided on the base member and supplies an electric current to the light-emitting element; and a reference potential wire that is provided on a rear surface side of the base member and is connected to an external reference potential. The reference potential wire is connected to the capacitive element and is insulated from the cathode electrode and the anode electrode.

    Light emitting device, optical device, and measurement device

    公开(公告)号:US11495940B2

    公开(公告)日:2022-11-08

    申请号:US17110304

    申请日:2020-12-03

    Abstract: A light emitting device includes a wiring board having a first wiring layer and a second wiring layer adjacent to the first wiring layer via an insulating layer, and a laser having a cathode electrode and an anode electrode, mounted on the wiring board, and driven through low-side driving. The first wiring layer includes a cathode wire connected to the cathode electrode, an anode wire connected to the anode electrode, and a first reference potential wire connected to a reference potential. The second wiring layer includes a second reference potential wire connected to the reference potential. An area of an overlap between the second reference potential wire and the anode wire is larger than an area of an overlap between the second reference potential wire and the first reference potential wire.

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