Invention Grant
- Patent Title: Light emitting device, optical device, and measurement device
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Application No.: US17111516Application Date: 2020-12-04
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Publication No.: US12107385B2Publication Date: 2024-10-01
- Inventor: Daisuke Iguchi , Kazuhiro Sakai
- Applicant: FUJIFILM Business Innovation Corp.
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee Address: JP Tokyo
- Agency: JCIPRNET
- Priority: JP 20030345 2020.02.26
- Main IPC: H01S5/0233
- IPC: H01S5/0233 ; G01B11/24 ; G06V40/16 ; H01S5/183 ; H01S5/343 ; H01S5/42

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, a laser having a cathode electrode and an anode electrode, mounted on the wiring board, and driven through low-side driving, and a capacitive element mounted on the wiring board and configured to supply a drive current to the laser. The first wiring layer includes a cathode wire connected to the cathode electrode, and an anode wire connected to the anode electrode. The second wiring layer includes a reference potential wire connected to a reference potential. The reference potential wire overlaps the anode wire. The anode wire surrounds the capacitive element.
Public/Granted literature
- US20210265807A1 LIGHT EMITTING DEVICE, OPTICAL DEVICE, AND MEASUREMENT DEVICE Public/Granted day:2021-08-26
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