The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2024
Filed:
Dec. 04, 2020
Fujifilm Business Innovation Corp., Tokyo, JP;
Daisuke Iguchi, Kanagawa, JP;
Kazuhiro Sakai, Kanagawa, JP;
FUJIFILM Business Innovation Corp., Tokyo, JP;
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.