Perhaps Kopin's R&D expense would not be so "impressive" if they like eMagin

had many of their most significant breakthroughs subsidized by the US Military, SOCOM, MANTECH et al. The "Pie in the Sky" Display for example was financed by NAVAIR and the US Navy.  And if by chance the Navy decides 4thDimension/Kopin display is holding up the F-35 Program and they switch to OLED then the best thing to do with all those patents will be to use them for wallpaper. When eMagin expands their manufacturing capacity with accompanying efficiencies that could very well be the end for Kopin. Tread lightly bro, the ice you trod upon is thin.

http://seekingalpha.com/article/4006719-leading-indicator-tells-us-will-dominate-head-worn-wearables