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:
Aug. 25, 2026
Filed:
Jan. 24, 2023
Canon U.s.a., Inc., Melville, NY (US);
Badr Elmaanaoui, Belmont, MA (US);
Leonid Pesok, Watertown, MA (US);
Mostafa Raziq, Saugus, MA (US);
Canon U.S.A., Inc., Melville, NY (US);
Abstract
A wavelength interrogation apparatus includes an optical fiber with a fiber core and an interference pattern in the fiber core, one or more photodiodes or photo-sensors to convert from a transmittance light of the optical fiber to an electrical signal, and an electrical circuit to generate a pulse with a predetermined duration, wherein the apparatus provides image acquisition at accurate start wavelength. The electrical circuit can include a first amplifier, a first differentiator or high-pass filter, a comparator, and a multivibrator, and can include other components.