High temperature imaging devices are disclosed. In one embodiment, the imaging device comprises an array of photosensitive elements (1104) fabricated on an insulator substrate (430), and an information storage component coupled to the array. The information storage component (1408) stores data representing one or more light patterns detected by the array. The light patterns may be images or spectral patterns. The insulator substrate (402) may be a sapphire or spinel substrate. Alternatively, the substrate may be silicon carbide or an insulated silicon substrate. In at least some embodiments, a processor (1406) is integrated on the same substrate as the arrays.