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:
Dec. 14, 2021
Filed:
Dec. 18, 2020
Olympus Corporation, Hachioji, JP;
Takumi Soga, Sagamihara, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
An imaging device according to an embodiment includes an imaging circuit, a variable-voltage power source, a light-emitting element, a constant current-driving circuit, and a control circuit. The control circuit is configured to turn on the light-emitting element in a period during which the imaging circuit performs imaging. The control circuit is configured to turn off the light-emitting element in a period during which the imaging circuit does not perform imaging. The control circuit is configured to control voltage applied to the light-emitting element by the variable-voltage power source on the basis of voltage of an input terminal of the constant current-driving circuit when the light-emitting element is turned on. The control circuit is configured to control the variable-voltage power source and apply predetermined voltage greater than or equal to compliance voltage of the light-emitting element to the light-emitting element when the light-emitting element is turned off.