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He mentions at the end of the video that potentially multiple projectors could be used to increase brightness. Don't know anything about the tech -- just thoug

• Animats 2y ago
  > multiple projectors could be used to increase brightness. Done in at least one early military large screen display system, using six CRTs (RGB x2) aimed at the screen. If one failed, the brightness dropped on the others but you still had an image. The USAF put a huge amount of effort into early large-screen displays.[1] Not very successfully. The most successful projection display before LCDs was the Eidophor. (1949-2000)[2] Big, expensive, complicated, high-maintenance, but reliable. Worked by distorting an oil film in vacuum with an electron beam. Biggest buyer was NASA's mission control center. In its final 1990s form, it was bright enough to be used in stadiums.[3] [1] https://en.wikipedia.org/wiki/Iconorama https://en.wikipedia.org/wiki/Iconorama [2] https://en.wikipedia.org/wiki/Eidophor https://en.wikipedia.org/wiki/Eidophor [3] https://www.youtube.com/watch?v=5783jPTKzjk https://www.youtube.com/watch?v=5783jPTKzjk
• js2 2y ago
  Home theater hobbyists do this for sure. Recent example: https://www.avsforum.com/threads/double-stacking-two-epson-ls12000-projectors-for-a-200-projection-screen-experimentation-and-results.3306966/ https://www.avsforum.com/threads/double-stacking-two-epson-l...