Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1989-04-12
1991-01-22
Cuchlinski, Jr., William A.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
374143, 374161, 374 29, 374 43, 350 9615, 250368, 25022714, 73705, 7320423, 128666, 128667, 128692, 128675, 128736, G01K 1120, G01K 1700, G01D 534, G01L 900
Patent
active
049866710
ABSTRACT:
A single sensor is provided as part of a fiberoptic probe to measure up to three parameters, namely pressure (or force or displacement), temperature, and heat flow or fluid velocity. A solid elastomeric optical element is formed at the end of optical fiber transmission medium, and adjacent light reflective and temperature dependent materials are formed on the resulting convex surface of the optical element. The amount of light reflected is proportional to the force or pressure against the element. The temperature dependent material is preferably a luminescent material. Over the luminescent material is formed a layer of material that is absorptive of infrared radiation, thereby allowing a determination of characteristics of heat or fluid flow by measuring the rate at which heat is carried away from the infrared heated layer. The sensor can be formed at the end of a single optical fiber, thereby having extensive applications where a very small sensor is required. One such application is a medical or clinical one, where the sensor is mounted in a catheter for providing pressure, flow and temperature of the blood in a blood vessel.
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Sun Mei H.
Wickersheim Kenneth A.
Cuchlinski Jr. William A.
Gutierrez Diego F. F.
Luxtron Corporation
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