APPLIANCE FOR THERMAL IMAGER TO EXPAND TEMPERATURE MEASUREMENT RANGE Russian patent published in 2009 - IPC G01R17/00 G01N21/00 

FIELD: physics, optics.

SUBSTANCE: invention relates to optical appliances intended for controlling the intensity of heat radiation coming into thermal imager. The proposed device incorporates an absorber of excess heat radiation coming into thermal imager representing a semi- translucent mirror fitted ahead of the thermal imager objective. The said absorber is made semi- translucent, for IR-radiation, material, for example, silicon. The absorber transmission makes 40% to 60%. The semi- translucent mirror is arranged at an angle to the thermal imager objective optical axis that is calculated from the formula.

EFFECT: expanded temperature measurement range.

1 dwg