Transmission method to determine and control the temperature of

Details Transmission method to determine and control the temperature of Transmission method to determine and control the temperature of

1989-08-28

1992-12-01

Will, Thomas B.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

374161, G01J 500, G01K 1100

Patent

active

051674521

ABSTRACT:
A method of accurately determining the temperature of a thin layer of bandgap material without requiring contact to the layer involves the use of optical radiation through the layer and the detection of optical absorption by the layer. The relationship between the temperature varying bandgap energy and the resulting optical absorption characteristics provides an indication of temperature independent of ambient temperature. Apparatus for performing high quality temperature detection and control is also provided.

REFERENCES:
patent: 3672221 (1972-06-01), Weil
patent: 4302970 (1981-12-01), Snitzer et al.
patent: 4539473 (1985-09-01), Brogardh et al.
patent: 4671651 (1987-06-01), Toyoda et al.
patent: 4708677 (1987-11-01), Blank et al.
patent: 4799788 (1989-01-01), Berthet et al.

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