Diy projector?

Question

over the past few weeks i have been making a fresnel lens projector out of a cardboard box with a fresnel lens. I get the picture really big on the ceiling and i can focus it but it dosent become clear enough to be watchable should i build this again using wood so not as much light escapes or is there a way to fix the problem without building it out of wood.

Answer 1

I would paint the cardboard black before making with wood.  Caulk any openings in the cardboard.

Answer 2

The problem really is the light output. No matter how much you try to block any more light, you are still working with a low light output - the bigger your picture the dimmer the picture will be. If you want to build a diy projector, you're better off trying to build one from an overhead projector. Or just buy a cheap one, you can get them quite cheap now and you'll be blown away by the difference!

http://theprojectorstore.thatnewplace.co...

Answer 3

try rapping it with foil, if it gets better well good