초록 ▼

A thermopile detector means for a temperature measuring instrument physically and electrically configured to supply an output signal which indicates target temperature substantially independent of the influence of ambient temperature changes. The detector means includes a first thermopile device exp

A thermopile detector means for a temperature measuring instrument physically and electrically configured to supply an output signal which indicates target temperature substantially independent of the influence of ambient temperature changes. The detector means includes a first thermopile device exposed to radiation from the target and a transducer means, preferably a second thermopile device, shielded from the target and connected in series opposition to the first.

대표청구항 ▼

Detector means useful in a measuring instrument for responding to infrared radiation from a target to produce a temperature indicating output signal, said detector means comprising: first thermopile means for producing an output voltage having a first component related to the amount of infrared radi

Detector means useful in a measuring instrument for responding to infrared radiation from a target to produce a temperature indicating output signal, said detector means comprising: first thermopile means for producing an output voltage having a first component related to the amount of infrared radiation incident on a sensing area thereof and a second component related to ambient temperature transients; transducer means for producing an output voltage exhibiting substantially the same relationship to ambient temperature transients as said first thermopile means; means mounting said first thermopile means and said transducer means in close physical proximity to one another whereby they will experience substantially the same ambient temperature; means for exposing said first thermopile means sensing area to radiation from said target; means for summing in opposition said output voltages produced by said first thermopile means and said transducer means to produce said temperature indicating signal; said transducer means comprising a second thermopile means for producing an output voltage having a first component related to the amount of infrared radiation incident on a sensing area thereof and a second component related to ambient temperature transients; and means for shielding said second thermopile means sensing area from radiation from said target.