Derrick, In the Beginning was DARPA and they gave about $17 Mill to Lockheed to perfect the technology which enabled the F-35 helmet to overcome the limitations and poor performance of the GENII helmet which threatened the Program's existence, A "Class One Deficiency" ...

so Lockheed did all the work-up on how to do this. The Integrated Night Vision, the Conformal Symbology, Elimination of any perceptible latency, so on and so on. However Lockheed only makes big stuff. In fact the smallest weapons system they make and they can't even do that is the Javelin. Maybe you've heard of it. It is in the News. Raytheon makes the Missile, Lockheed makes the Launch Unit which coincidentally has an eMagin display (just like the F-35 and the ENVG-B) in the Command Launch Unit which renders it a superior MANPAD ideal for Surveillance, Anti-Armor or any other target which requires offset.
 So then what happened? Remember Lockheed only makes big stuff but they found the same technology that made Javelin so effective could also be adapted to Avionics. But Helmets were too small to make for big Lockheed so they struck a partnership Elbit to make the helmets for them. And they do. All of them.
 A month or two ago Kopin put out a PR stating that they were designing a HMD for the Blackhawk and Chinook crews. Struck me as odd. Sikorsky who builds the Blackhawk is a subsidiary of Lockheed and Boeing who makes the Chinook  both use the same Elbit Common HMD, the Elbit Common uses eMagin OLED displays. You don't have to be a Defense Blogger to know this. It is common knowledge.
So what do make of that?