The optical path begins, as shown in Figure 10b, with an eMagin WUXGA 1920×1200 60 Hz color OLED display
https://scontent.oculuscdn.com/v/t64.5771-25/11162698_1898529713737363_2337972817741479936_n.pdf/F…
https://www.oculus.com/blog/oculus-research-to-present-focal-surface-display-discovery-at-siggraph/
http://www.roadtovr.com/oculus-research-demonstrate-groundbreaking-focal-surface-display/