Method and apparatus for a Fabry-Perot multiple beam fringe sensor
Patent 4329058 Issued on May 11, 1982. Estimated Expiration Date: 
May 11, 1999. Estimated 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.
May 11, 1999. Estimated 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.Patent ReferencesLaser interferometer probe Patent #: 4171915 InventorsAssigneeApplicationNo. 06/005265 filed on 01/22/1979US Classes:356/480, Resonant cavity356/44, With sample engaging rod or tube356/481Refraction indexingExaminersPrimary: Church, Craig E.Attorney, Agent or FirmInternational ClassesG01K 11/00 (20060101)G02B 6/26 (20060101) G01K 11/12 (20060101) G02B 5/28 (20060101) G02B 6/34 (20060101) G01D 5/26 (20060101) AbstractA method and the resulting apparatus for implementing a unique multiple beam fringe sensor that is adapted to be interfaced with a low cost, compact fiber optic transmission system in order to provide an accurate digital representation of a physical parameter (e.g. temperature) of a remote sample. The sensor is fabricated so as to include a Fabry-Perot gap formed between the ends of two mated optical fibers. By examining the optical characteristics of light that is transmitted through the Fabry-Perot sensor gap, an indication of gap width can be ascertained. Accordingly, a change in Fabry-Perot sensor gap width is related to a change in the particular physical parameter to be measured. | |
