What size lens should I get for my projector?
And I want to make a $100 1280x800 projector. In the comment section in that video he says he used a 120mm fresnel lens for the back (Focusing the 100W LED to the 5.6" LCD) and a 220mm fresnel lens for the front (Focusing the LCD to the wall). I want to make sure that I get the right lens.
Here is the site I am probably going to buy from:
I might even post an article that links to their site so I can get the lens for free.
Lastly, I'd like to say that I want it to as small as possible (Hence the reason for getting a not-so-common 5.6" LCD instead of a common 7"). Please help me choose a lens that will allow for the smallest possible space between the LCD, lenses, and light. I will make an Instructable for this later on.