Patents Assigned to Oxsensis Ltd.
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Patent number: 9448105Abstract: An optical sensor is disclosed for measuring pressure and/or temperature. The optical sensor is adapted for use in high temperature environments, such as gas turbines and other engines. The optical sensor comprises an optical assembly having a sensor element, a spacer and a lens arranged along the optical axis. The sensor element is spaced from the lens by the spacer. An optical fiber is coupled to the optical assembly for illuminating the sensor element. The optical assembly is resiliently mounted in a housing such that the optical assembly is insulated from shock to the housing. There is also disclosed a method of assembling the optical sensor.Type: GrantFiled: August 9, 2012Date of Patent: September 20, 2016Assignee: Oxsensis Ltd.Inventors: Arnold Peter Roscoe Harpin, Stephen James Fasham, Stephen Geoffrey Tyler
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Patent number: 9404771Abstract: An optical sensor (10) comprises an optical cavity defined by a dielectric body and responsive to one or more physical environmental conditions, and a waveguide (70) having a terminal end spaced apart from the optical cavity such that light is optically coupled from the terminal end of the waveguide (70) to the optical cavity. The waveguide (70) is arranged such that, in use, it is maintained at a first temperature that would not damage the optical coupling to the optical cavity when the dielectric body is maintained at a second temperature sufficient to damage the optical coupling to the optical cavity.Type: GrantFiled: March 4, 2014Date of Patent: August 2, 2016Assignee: Oxsensis Ltd.Inventors: Arnold Peter Roscoe Harpin, John Paul Drake, Stephen Geoffrey Tyler
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Publication number: 20150033848Abstract: An optical sensor having one or more sensing interference elements is disclosed. A first detector function generates a coarse optical path difference signal for example using a discrete Fourier transform of a detected interference spectrum, and a second detector function generates a refined optical path difference signal using the coarse optical path difference signal and for example a cross correlation of the interference spectrum with one or more sets of periodic transfer functions.Type: ApplicationFiled: March 13, 2013Publication date: February 5, 2015Applicant: OXSENSIS LTDInventor: Ralf-Dieter Pechstedt
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Publication number: 20140202253Abstract: An optical sensor is disclosed for measuring pressure and/or temperature. The optical sensor is adapted for use in high temperature environments, such as gas turbines and other engines. The optical sensor comprises an optical assembly having a sensor element, a spacer and a lens arranged along the optical axis. The sensor element is spaced from the lens by the spacer. An optical fibre is coupled to the optical assembly for illuminating the sensor element. The optical assembly is resiliently mounted in a housing such that the optical assembly is insulated from shock to the housing. There is also disclosed a method of assembling the optical sensor.Type: ApplicationFiled: August 9, 2012Publication date: July 24, 2014Applicant: OXSENSIS LTDInventors: Arnold Peter Roscoe Harpin, Stephen James Fasham, Stephen Geoffrey Tyler
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Patent number: 8705045Abstract: An optical sensor (10) comprises an optical cavity defined by a dielectric body and responsive to one or more physical environmental conditions, and a waveguide (70) having a terminal end spaced apart from the optical cavity such that light is optically coupled from the terminal end of the waveguide (70) to the optical cavity. The waveguide (70) is arranged such that, in use, it is maintained at a first temperature that would not damage the optical coupling to the optical cavity when the dielectric body is maintained at a second temperature sufficient to damage the optical coupling to the optical cavity.Type: GrantFiled: December 12, 2008Date of Patent: April 22, 2014Assignee: Oxsensis Ltd.Inventors: Arnold Peter Roscoe Harpin, John Paul Drake, Stephen Geoffrey Tyler