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. 28, 2023
Filed:
Jul. 08, 2022
The United States of America, As Represented BY the Secretary of the Navy, Crane, IN (US);
Kevin Kellar, Bloomfield, IN (US);
The United States of America, as Represented by the Secretary of the Navy, Washington, DC (US);
Abstract
Disclosed is an improved Sagnac interferometer sensor for inertial navigation and guidance systems (e.g., inertial measurement units (IMUs)) that affords a reduced area architecture. The sensor implements optical folding architectures and techniques to increase the optical path length of the Sagnac interferometer. The folding optical architecture increases the total optical path, which thereby increases the total phase difference between two counter-rotating optical beams in the Sagnac interferometer. The technique increases accuracy and durability of IMUs without the need for an increase in size, weight, and cost.