Norvegian-language TU Industry reports that Prox Dynamics' PD-100 world's smallest military grade UAV is equipped by the smallest to-date FLIR thermal camera weighting just 0.5 gram. A few months ago their smallest camera was 25 grams. The unit which is mounted in the PD 100 T weighs half a gram, says CTO and Prox Dynamics Entrepreneur Petter Muren. The whole drone with visible and thermal cameras weighs just 17.5g:
Thanks to SO for the link!