Patent ID: 11874176
Assignee: UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. A method for two-wavelength, single-camera imaging thermography for in-situ temperature measurement of a target, comprising:
receiving in a target light path inlet conduit a target light beam reflected from the target;
attenuating the target light beam;
converging the target light beam;
removing aberrations from the target light beam;
dividing the target light beam into a first light beam and a second light beam;
directing the first light beam through a first aperture iris to align the first light beam;
directing the first light beam through a first tunable or non-tunable band pass filter to regulate the first light beam to a first wavelength Xi;
directing the second light beam through a second aperture iris to align the second light beam;
directing the second light beam through a second tunable or non-tunable band pass filter to regulate the second light beam to a first wavelength λ2;
merging the first light beam of λ1 wavelength along the same path or a parallel path of the second light beam of λ2 wavelength to create a merged light beam comprising light of λ1 and λ2 wavelengths; and
directing the merged beam to a high-speed camera for imaging.