[andrewla]

I don't know if you have a working project, but if you do, let me throw an idea at you. Instead of trying for an 8k projector, give me something that can handle a couple of lines of text -- say 6 lines by 25 characters, and supports a simple serial API.

Augmented reality is a great dream, but an unobtrusive heads-up-display for simple information would be revolutionary in itself. Baseline applications like a clock/calendar/compass, maybe reminders, or a no-look note-taking tool. Next-gen involving real-life closed captioning, or, when supplemented with a camera and an offline database, a basic "who is this person I am talking to" / protocol officer. Further than that a very rough "am I facing the right way" waypoint finder, etc.

If the hardware can be made cheaply for this sort of application, use cases will emerge faster than you can shake a stick at. Overlaying reality, etc., are way less interesting without huge amounts of compute.

[AstralStorm]

Unfortunately the hardware to do this is harder than a LCD or even DLP. Otherwise we'd have it already.

Galvo projectors as used in hololens etc. are vector, but tiny projectors aimed at retina are extremely hard to pull off, even ones aimed at glasses are very hard and lousy. Aiming them at a wall is ok though.

[andrewla]

I'm not suggesting a vector display. The VT100 had 240 scan lines and 768 dots; half of this would be fine.