Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1988-03-31
1990-03-13
Cuchlinski, Jr., William A.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
374128, 356 43, G01J 506, G01J 562
Patent
active
049078950
ABSTRACT:
The infrared thermometer optical chopper includes a planar shutter having infrared radiation transmissive and infrared reflective portions arranged on the shutter, and a mechanism for rotating the shutter sequentially through a series of stop positions in which the transmissive and reflective portions are sequentially aligned with the internal optics of the infrared thermometer. A mechanism is also preferably provided for sensing the positioning of the shutter at the stop positions, to determine whether the shutter stop position alignment is in an infrared radiation transmissive phase or in an infrared radiation reflective phase.
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Geist Jon, and Blevin, W. R., "Chopper-Stabilized Null Radiometer Based Upon an Electrically Calibrated Pyroelectric Detector", Applied Optics, vol. 12, No. 11, Nov. 1973, pp. 2532-2535.
Cuchlinski Jr. William A.
IVAC Corporation
Will Thomas B.
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