CONTRAST INFRARED RADIATION DEVICE Russian patent published in 2006 - IPC G01J5/56 

FIELD: optics.

SUBSTANCE: proposed device has test object with temperature transducer installed in background of cavity radiator provided with temperature transducer and electric heater. Device also has temperature difference stabilizing channel incorporating series-connected bridge circuit one of whose heat-sensing arms is test object temperature transducer and other one is cavity radiator temperature transducer, as well as amplifying circuit whose output is connected to cavity radiator electric heater. Newly introduced in device is test object temperature measuring channel incorporating second bridge circuit. Newly introduced second temperature transducer of test object functions as heat-sensing arm of second bridge circuit which is connected through measuring amplifier to input of functional converter whose output is connected to second input of amplifying circuit of temperature difference stabilizing channel. Functional converter is made in the form of series-connected analog-to-digital converter, read-only memory, and digital-to-analog converter.

EFFECT: ability of contrast radiation stabilization by compensating for impact of ambient temperature fluctuations and excluding operator's error.

2 cl, 1 dwg