4 ms·
Look up "Short Throw Laser Projectors" it's somewhat possible with funky optics depending on how much distance you can afford.
by lathiat 6y ago
Look up "Short Throw Laser Projectors" it's somewhat possible with funky optics depending on how much distance you can afford.
- huhtenberg 6y agoThanks. Can't seem to find how they work exactly except for "with mirrors!" remarks :)
- krm01 6y agoSpherical mirrors and fisheye lenses do the trick.
- fragmede 6y agoOnce you know something is possible, it becomes dramatically easier. :) Current generation non-laser short throw projectors may already hit the price/performance you need, just mount them so they face the ceiling, on top of a bookshelf. (Laser projects are still quite expensive.) If they don't, then physics, specifically optics, has the equations to calculate the mirror specifications you need for your exact use-case. Custom-made mirrors aren't the cheapest, but what you're asking for sounds possible, though it's impossible to say without more information, specifically the dimensions and the brightness needed - you'll lose a lot of brightness from the mirrors. The setup for Fishbug was two projectors facing a hemispherical mirror. https://www.youtube.com/watch?v=ThtF-FY28hM https://www.youtube.com/watch?v=ThtF-FY28hM