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NASA used these projectors for the large screen in the missions control room for at least the Apollo missions. https://en.wikipedia.org/wiki/Eidophor#/media/Fi

• Pinus 5y ago
  I remember first reading about these. My reactions were something like: Ok, they had video projectors in the late sixties. Fine. Wait a minute. I hadn't even seen a video projector until the late eighties. They were non-existent at my university in the early nineties. I saw a small-lecture-hall one in 2000, and that was a large, hot and expensive-looking device. And these fellows had them thirty years earlier? reads up a bit Blimey!