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. 14, 2025
Filed:
Jan. 16, 2020
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Takashi Masuda, Kanagawa, JP;
Mitsushi Tabata, Kanagawa, JP;
Koichi Okamoto, Kanagawa, JP;
Yasuo Oba, Kanagawa, JP;
SONY SEMICONDUCTOR SOLUTIONS CORPORATION, Kanagawa, JP;
Abstract
Provided is a light source device that includes a first resistor connected to a given potential, a light emitting element connected in series to the first resistor and that is supplied with a given current and thus emit a given amount of light, and a second resistor connected to the given potential, The light source device further includes a first current source connected in series to the second resistor and that is supplied with a current, and a first voltage at a first connection part where the first resistor and the light emitting element are connected to each other and a second voltage at a second connection part where the second resistor and the first current source are connected to each other are taken out.