Thermograph absolute temperature referencing technique

Details Thermograph absolute temperature referencing technique Thermograph absolute temperature referencing technique

1974-03-04

1976-01-27

Murray, Richard

Telegraphy

Systems

Simplex-reversing periodic

178DIG8, 178DIG14, H04N 316

Patent

active

039353826

ABSTRACT:
An infrared imaging system (thermograph) that electronically forms an optical display of an object as viewed in the infrared portion of the spectrum wherein a given brightness level of the optical image may be set to correspond to a particular object temperature. A reference object (target) within the thermograph is periodically imaged simultaneously with the electronic video circuits being reset to a reference voltage proportional to the absolute temperature of the target. Temperature variations of the target during a period use of the thermograph thus does not affect the brightness level of the optical images, and the optical image brightness becomes a measure of the absolute temperature of the optical image.

REFERENCES:
patent: 3751586 (1973-08-01), Johansson
patent: 3830970 (1974-08-01), Hurley et al.

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