Optical temperature measurement technique utilizing phosphors

Details Optical temperature measurement technique utilizing phosphors Optical temperature measurement technique utilizing phosphors

1980-07-10

1984-05-15

Woodiel, Donald O.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

2504611, 374137, 374159, G01N 2131

Patent

active

044485476

ABSTRACT:
A technique of temperature measurement wherein an object or environment to be measured is provided with a phosphor material layer that emits at least two optically isolatable wavelength ranges whose intensity ratio depends upon the object or environment temperature, the emitted radiation being brought to a detector by an optical system that may include an optical fiber. Several specific applications of this technique are disclosed, such as temperature monitoring of electrical equipment and industrial processing, medical temperature instrumentation including the use of disposable elements that contain a small quantity of the temperature dependent phosphor, special and multiple probes, the use of liquid phosphors, and a phosphor paint for monitoring surface temperatures.

REFERENCES:
patent: 4075493 (1976-12-01), Wickersheim
patent: 4215275 (1978-02-01), Wickersheim

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