During my daily browsing random nothings, I happened to stumble into this diagram and the idea of a homemade projector.
At the now defunct lumenlab.com, one could find dozens of project logs, listing LCD’s used, lamp and reflector design, as well as fresnel and triplet configurations. With a full all-nighter of studying the forums under my belt, I set out to build my own.
I first had to find a monitor to sacrifice. Fortunately I had a native 1280×1024 LCD sitting around (good enough for 720p, I figured). After removing the framing and guts of the LCD, I removed the anti-glare layer on the screen using moist paper towels laid upon it until the adhesion weakened and I was able to peel it off.
Fast forward a few weeks later, I’d assembled most of a working projector, along with a ghetto cooling system and height adjust system.
With a bulb still on the way, I improvised with a pitifully low lumen lantern to test functionality. Here one can see the inside rear of the projector enclosure. Visible is the bulb socket (connected to a big ballast mounted on the outside rear), the reflector, and a temperature monitor controlling a 120mm exhaust fan to continue running after use until a set temperature is reached. One can also see the fresnel-LCD-fresnel sandwich and LCD control board, as well as a piece of Lexan attached to the rearmost fresnel to serve as a heat shield.
This is the result of the improvised setup viewed from the front of the projector:
It works! The LCD lives! A view from the front of the box (through the triplet):
I hold on to hope that things will improve with a decent light source.
Continued here: Preliminary Projector Results