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US Patent 6141098 - Fiber optic temperature sensor
US Patent Issued on October 31, 2000
Estimated Patent Expiration Date:
October 6, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
October 6, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA fiber optic temperature sensor uses a light source which transmits light through an optical fiber to a sensor head at the opposite end of the optical fiber from the light source. The sensor head has a housing coupled to the end of the optical fiber. A metallic reflective surface is coupled to the housing adjacent the end of the optical fiber to form a gap having a predetermined length between the reflective surface and the optical fiber. A detection system is also coupled to the optical fiber which determines the temperature at the sensor head from an interference pattern of light which is reflected from the reflective surface.Other References
| InventorsApplicationNo. 167138 filed on 10/06/1998US Classes:356/477, Using fiber or waveguide interferometer356/35.5, By light interference detector (e.g., interferometer)356/519Having partially reflecting plates in series (e.g., Fabry-Perot type)Field of Search356/35.5By light interference detector (e.g., interferometer)ExaminersPrimary: Kim, Robert H.Attorney, Agent or FirmUS Patent References4198119, Connector for optical cableIssued on: 04/15/1980 Inventor: Uberbacher4201446, Fiber optic temperature sensor using liquid component fiber Issued on: 05/06/1980 Inventor: Geddes , et al.4223226, Fiber optic temperature sensor Issued on: 09/16/1980 Inventor: Quick , et al.4278349, Fiber optical temperature sensors Issued on: 07/14/1981 Inventor: Sander4295739, Fiber optic temperature sensor Issued on: 10/20/1981 Inventor: Meltz , et al.4574172, Brazing wand with fiber optic temperature sensor Issued on: 03/04/1986 Inventor: Burack , et al.4755668, Fiber optic interferometric thermometer with serially positioned fiber optic sensors Issued on: 07/05/1988 Inventor: Davis4983333, Method for controlling excess fiber length in a loose tube optical fiber buffer tube Issued on: 01/08/1991 Inventor: Blew5035511, Distributed fiber optic temperature sensor based on time domain transmission Issued on: 07/30/1991 Inventor: Berthold5051590, Fiber optic flame detection and temperature measurement system having one or more in-line temperature dependent optical filters Issued on: 09/24/1991 Inventor: Kern, et al.5051595, Fiber optic flame detection and temperature measurement system employing doped optical fiber Issued on: 09/24/1991 Inventor: Kern, et al.5087124, Interferometric pressure sensor capable of high temperature operation and method of fabrication Issued on: 02/11/1992 Inventor: Smith, et al.5140609, TRD temperature sensor Issued on: 08/18/1992 Inventor: Jensen, et al.5143531, Hermetic fiber optic-to-metal connection technique Issued on: 09/01/1992 Inventor: Kramer5193133, Method of terminating optical fiber utilizing a plastic alignment ferrule with polishing pedestal Issued on: 03/09/1993 Inventor: Schofield, et al.5202939, Fabry-perot optical sensing device for measuring a physical parameter Issued on: 04/13/1993 Inventor: Belleville, et al.5211480, TRD temperature sensor and electronics Issued on: 05/18/1993 Inventor: Thomas, et al.5255980, Black body TRD temperature sensor Issued on: 10/26/1993 Inventor: Thomas, et al.5295206, Fiberoptic temperature transducer Issued on: 03/15/1994 Inventor: Mischenko5311274, Fiber optic refractometer Issued on: 05/10/1994 Inventor: Cole, Jr.5351268, Modular luminescence-based measuring system using fast digital signal processing Issued on: 09/27/1994 Inventor: Jensen, et al.5355423, Optical temperature probe assembly Issued on: 10/11/1994 Inventor: Phillips5400140, Method of decoding a spectrally modulated light signal Issued on: 03/21/1995 Inventor: Johnston5401958, Optical temperature compensation of spectral modulation sensors by spectrographic interrogation having a dispersive element Issued on: 03/28/1995 Inventor: Berkcan5401959, Optical temperature compensation of spectral modulation sensors by ratiometric interrogation having dichroic filters Issued on: 03/28/1995 Inventor: Berkcan5438873, Fiberoptic sensor using tapered and bundled fibers Issued on: 08/08/1995 Inventor: Wlodarczyk, et al.5477323, Fiber optic strain sensor and read-out system Issued on: 12/19/1995 Inventor: Andrews, et al.5499313, Distributed and spatially averaged fiber optic temperature sensors and method using same Issued on: 03/12/1996 Inventor: Kleinerman5570441, Cylindrical fiber probes and methods of making them Issued on: 10/29/1996 Inventor: Filas, et al.5616214, Determination of sodium sulfide and sulfidity in green liquors and smelt solutions Issued on: 04/01/1997 Inventor: Leclerc5658364, Method of making fiber optic-to-metal connection seals Issued on: 08/19/1997 Inventor: DeVore, et al.5696863Distributed fiber optic temperature sensors and systems Issued on: 12/09/1997 Inventor: Kleinerman International ClassG01B 009/02 |
