Patent ID: 8304850

Claim:
An apparatus comprising: an integrated circuit (IC) that is configured to sense infrared radiation including first and second temperature-sensitive elements in a dielectric stack of the IC, wherein the first temperature-sensitive element being more thermally insulated from a substrate of the radiation sensor chip than the second temperature-sensitive element, and wherein the first and second temperature-sensitive elements include first and second thermocouple groups, respectively, connected in series to form a thermopile, and wherein the dielectric stack is a semiconductor process dielectric stack including a plurality of silicon dioxide sublayers and polysilicon traces, titanium nitride traces, tungsten contacts, and aluminum metallization traces between the various sublayers patterned to provide the first and second thermocouple groups connected in series to form the thermopile; a plurality of bonding pads on the radiation sensor chip coupled to the first and second temperature-sensitive elements; a plurality of bump conductors bonded to the bonding pads for physically and electrically connecting the radiation sensor chip to corresponding mounting conductors; and a diffractive optical element integrated with a back surface of the IC.