Thermal management of thermal sensor in a mobile device

A mobile device case, comprising:

• a case configured to house a mobile device, where the mobile device includes a mobile thermal sensor system including
• a thermal detector package including
• a first thermopile,
• a second thermopile,
• a reference temperature detector, and
• a package substrate configured to support the first thermopile, the second thermopile and the reference temperature detector;
• and
• a substrate having first and second opposing sides and configured to support the thermal detector package on the first side of the substrate;
• a first heat spreader coupled to the second side of the substrate;
• an opening in the case;
• and
• a second heat spreader disposed on the case and proximate to the opening, where the second heat spreader is configured to contact the mobile thermal sensor system and disperse heat.