| 主权项 |
1. An apparatus comprising:
an optical imaging probe housed in a viewing tube, the optical imaging probe having a field of view arranged to fully encompass a surface of a component to be thermally mapped in a high temperature combustion environment of a turbine engine, the imaging optical probe effective to concurrently capture infrared (IR) emissions that fully encompass the surface of a component, the IR emissions comprising a first band in an IR spectrum, wherein the first band in the IR spectrum comprises a near IR wavelength or comprises a mid IR wavelength, wherein the component of the turbine engine comprises a thermal barrier coating (TBC) subject to emittance variation in the combustion environment of the turbine engine; an optical fiber housed in the viewing tube, a field of view of the optical fiber arranged to encompass a spot location on the surface of the component disposed within the field of view of the optical probe, the optical fiber effective to capture IR emissions comprising a second band in the IR spectrum, wherein the second band in the IR spectrum comprises a long IR wavelength effective to measure with a higher degree of accuracy emittance values from the TBC than the wavelengths in the first band, the IR emissions in the second band in the IR spectrum indicative of an emittance value of the TBC at the spot location on the surface of the component effective to reduce temperature errors due to the emittance variation of the TBC; and a processor configured to calibrate a spot position error in connection with the spot location on the surface of the component by way of an IR laser beam transmitted through the optical fiber, wherein the laser beam impinges on the surface of the component on a laser-radiated location expected to correspond with the spot location, and wherein the optical probe is configured to capture IR emissions comprising a response to the impinging laser beam, the response indicative of the spot position error in connection with the spot location. |
