Sierra Pacific has used eMagin OLED in the past, also Kopin for lower resolution demands in the same family of thermal sights for example. but...

Eagle Eye X says OLED available in displays from WUXGA, QWXGA and QXGA. "Q" in these mean "4 times" as the QWXGA would be SXGA for ID purposes, the array, diopter control and inter-pupillary adjustment look a lot like you know what but...

http://www.x20.org/eagle-eye-x-binocular-dual-eye-oled-micro-display-viewer/