Comment by rbanffy
12 days ago
We need doubly-curved OLED screens. We can already do Trinitron (cylindrical) ones with the flexible displays we have.
It is an interesting problem, though. I noticed in Disney's Loki, they used a combination of VFX and lenses on top of flat panels to give the impression they were using CRTs (notably in their ADM-3 lookalikes). For a 9~14" CRT it'd be a fairly large lens that would need to be optically connected to the panel below (so not to have internal reflections).
Can't it be done with a DLP device? CRT was X-ray projection device with phosphor paint applied inside to convert the rays to visible light.
CRTs were emitting an electron beam to draw images on a phosphorescent screen, not emitting X-rays: https://en.wikipedia.org/wiki/Cathode-ray_tube Blasting X-rays through a screen to the face of an observer would not have been a good idea…
X-rays are mentioned 28 times in the Wikipedia link about CRTs, https://en.wikipedia.org/wiki/Cathode-ray_tube
Although X-rays are not used to draw the image, they are generated as an unwanted side effect. The phosphorescent screen emits X-rays when struck by the electron beam. To protect the user, the glass must be a special kind of glass to absorb those X-rays, and the accelerator voltage has to be set not too high.
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Interestingly, a lot of folks used to repeat the x-ray thing, that's where the term "eyeball cancer machine" came from.
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Ask the Therac-25 patients if the difference between electron beans and X-rays is important
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