Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-04-26
1997-03-25
Tokar, Michael J.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250340, 250372, 2502521, 219494, 219497, 374133, G01J 516, H05B 1100
Patent
active
056147163
ABSTRACT:
A method and apparatus are described for measuring the amplitude of radiation emitted by an object and compensating for the effects of ambient temperature fluctuations. A radiation sensor is provided receiving radiation from the object and converting it into an alternating current sensor output signal. A thermal sensor detects an ambient temperature proximately to the radiation sensor and generates an alternating current compensation signal having an amplitude proportional to the ambient temperature. A summing amplifier coupled to the radiation sensor and the thermal sensor combines the sensor output signal from the radiation sensor and the compensation signal from said thermal sensor to form an alternating current output signal. The amplitude of the alternating current output signal is proportional to the amplitude of radiation emitted by the object and excludes the effect on the instrument by the ambient temperature.
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Anderson Norman C.
Rupert Robert E.
Infratemp, Inc.
Tokar Michael J.
Tyler Virgil O.
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