512 × 512, 100 Hz Mid-Wave Infrared LED Microdisplay System

The demand for high-speed and/or high-temperature infrared (IR) scene projectors has led to the development of systems based on IR light-emitting-diode (LED) arrays. Using mid-wave (3--5 μm) superlattice LED arrays, a 512 × 512 pixel scene projection system operating at 100 Hz has been fully developed. These LEDs, flip-chip bonded to a read-in integrated circuit, display temperatures of up to 1350 K when cooled to liquid nitrogen temperature (77 K). Using custom drive electronics and packaging, the array has been nonuniformity corrected (NUCed) and has survived hundreds of hours of operation at multiple facilities. This system is fully configurable by the user and has a digital visual interface to display content.