Optical sensor for circumferential interior surface of turbomachine casing, and related method
US10774680B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2019 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jun 11, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3624
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical sensor for a rotating blade stage of a turbomachine is disclosed. The optical sensor includes a housing to be mounted relative to a circumferential interior surface of a casing of the turbomachine. Optical fiber(s) are operatively coupled to the housing for communicating: an optical signal for sending toward the rotating blade stage and a return optical signal reflected by the rotating blade stage, through the casing. An optical signal redirecting element is configured to redirect the optical signal from optical fiber(s) inwardly toward the rotating blade stage relative to the casing, and redirect the return optical signal reflected by the rotating blade stage into the at least one optical fiber. Optical fiber(s) have a longitudinal shape configured to follow the circumferential interior surface of the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.