My 5" Ps1 lcd projector.
 

Not sure if it's a computer or a general thread but since it is fun meh it's goin here.. does anyone know anything about focal lengths and fresnel lenses ? I've been reading on a DIYaudio forum and I'm soo lost and over my head but I just want to make one... so any help would be hot. I've got the LCD already stripped and I've ordered a triplet.. Umm... I need a lightsource and whatnot other than that I'm lost :(