"Using traditional methods, wide-angle lens system designs require multiple elements, which mean they won’t work well for thermal sensing. Practically, very few affordable focusing thermal systems offer more than about a 50-degree field of view. However, a lensless smart sensor (LSS) manufactured from a single thermal diffraction grating could capture intelligible signals from a larger range of incident angles – perhaps greater than 100 degrees. In fact, a large field of view combined with the higher selling price of thermal imaging systems (compared to their visible-light counterparts) could mean that wide-angle thermal sensing will be one of the first commercially advantageous applications of LSS technology," said Gill.
Thanks to DSSB for the link!
