INFRARED COLLIMATOR Russian patent published in 2007 - IPC G02B27/30 G01M11/02 

FIELD: optics, possible use for controlling parameters of thermo-vision devices.

SUBSTANCE: infrared collimator contains objective, test chart, positioned in focal plane in front of background emitter, environment temperature sensor, corrector, meant for changing, in accordance to change of temperature of environment, of voltage at input of device for maintaining difference of temperature between background emitter and environment, input of which is connected to output of corrector, and output - to heater of background emitter. Introduced additionally is transformer, containing serially connected generator of stabilized voltage, first and second resistance elements, while first output of second resistance element is connected to second output of first resistance element, acts as first input of transformer and is connected to first output of environment temperature sensor, second output of second resistance element being the second input of transformer and being connected to second output of environment temperature sensor, and also second generator of stabilized voltage, output of which is connected to first input of differential amplifier, second input of which is connected to first input of transformer, while output of differential amplifier is an output of transformer and is connected to input of corrector, and environment temperature sensor has exponential dependence of resistance on temperature.

EFFECT: increased precision of control over parameters of thermo-vision devices due to increased precision of support of contrast radiation level.

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