Solar immunity design
All uncooled microbolometers react similarly when the IR camera is pointed directly at the sun: pixels pick up the sun's image and a temporary signal offset occurs, slowly decreasing after exposure and producing a ghost image. However, ULIS amorphous-silicon-based sensors allow the problem to be corrected automatically for quality images, even after direct sun exposure and even with high-intensity or long exposures.
Conference Paper « Spectral and angular responses of microbolometer IR FPA: a characterization method using a FTIR »
ULIS launches megapixel thermal image sensor offering large panoramic field of view and fast-target detection