Apparatus and method for thermal detection

A thermal radiation detecting device for sensing temperature at multiple locations proximate to the detecting device, the detecting device comprising:

• a first infrared detector configured to measure temperature of a first location by receiving the infrared radiation of the first location;
• a second infrared detector configured to measure temperature of a second location by receiving the infrared radiation of the second location;
• a housing for housing said first and second infrared detectors, said housing being configured to allow the infrared radiation of first and second locations to be received therein;
• a first reflector for directing infrared radiation of the first location towards the first infrared detector;
• and
• a second reflector for directing infrared radiation of the second location towards said second infrared detector.

A method for determining a temperature differential at a location after a device has moved in position with respect to the location, the method comprising:

• determining a temperature of the location using a pair of infrared sensors each receiving infrared energy from a reflective mirror;
• comparing the measured temperature of the location by said pair of infrared temperature sensors;
• and
• providing an indication of a temperature differential between the measured temperature of the location by said pair of infrared temperature sensors.