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:
Nov. 04, 2025
Filed:
Feb. 23, 2022
Olympus Corporation, Hachioji, JP;
Takumi Soga, Sagamihara, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
In a light-emitting device according to a first aspect of the present invention, a condenser is configured to smooth an output voltage of a switching power source. A voltage source of the light-emitting device is configured to adjust a voltage of the condenser. A processor of the light-emitting device is configured to turn on a light-emitting element of the light-emitting device. The processor is configured to measure the output voltage in a turning-on period of the light-emitting element and store the measured output voltage on the storage medium as a reference voltage. The processor is configured to turn off the light emitting element. The processor is configured to control a voltage output from the voltage source on the basis of the reference voltage stored on the storage medium so as to adjust the voltage of the condenser immediately before the light-emitting element is next turned on.