Abstract
A passive microscopic flow sensor includes a three-dimensional microscopic optical structure formed on a cleaved tip of an optical fiber. The three-dimensional microscopic optical structure includes a post attached off-center to and extending longitudinally from the cleaved tip of the optical fiber. A rotor of the three-dimensional microscopic optical structure is received for rotation on the post. The rotor has more than one blade. Each blade has a reflective undersurface that reflects a light signal back through the optical fiber when center aligned with the optical fiber, the blades of the rotor shaped to rotate at a rate related to a flow rate.
Document Type
Patent
Status
Active
Issue Date
4-25-2023
Patent Number
US 11635315 B2 [ 11,635,315 ]
CPC Classification
G01F1/103
Application number
US17/245,645
Assignees
United States of America as represented by the Secretary of the Air Force , Wright - Patterson AFB , OH ( US )
Filing Date
4-30-2021
Recommended Citation
Williams, Jeremiah C., and Hengky Chandrahalim. Optical Fiber Tip Micro Anemometer. United States Patent 11635315 (B2), issued 25 April 2023. https://scholar.afit.edu/patents/9
Included in
Electro-Mechanical Systems Commons, Optics Commons, Semiconductor and Optical Materials Commons
Comments
This patent was previously hosted on AFIT Scholar in the Faculty Publications collection.