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. 28, 2025
Filed:
Aug. 03, 2022
Santec Holdings Corporation, Komaki, JP;
Yasuki Sakurai, Komaki, JP;
SANTEC HOLDINGS CORPORATION, Aichi, JP;
Abstract
An optical filter is configured to selectively pass, as an output light, at least one wavelength component of multiple wavelength components included in an input light. The optical filter comprises a movable element. A controller is configured to adjust a passband by controlling the movable element based on power of light corresponding to the output light measured by a power monitor. The optical filter is configured as a filter so that in a first wavelength band including a center wavelength of the passband, a gain curve corresponds to a convex function having a peak at the center wavelength and in a second wavelength band adjacent to the first wavelength band, the gain curve shows a stepper slope than the convex function.