A basic Overhead Projector bright enough to project your content on to the side of a large buildings.
Another big bonus is the fact that the bulbs are comparatively very long life, and at $10.00 each compared to the $500 variety. We chose the LCD Panel for a few reasons. First off its ready to go, out of the box, for what we needed. They are cheap and readily available on eBay and other online sources. They have all our vga, composite, and s-video connections ready on-the-spot. The image quality is really exceptional with these units as they are basically a 15" LCD monitor without a backlight. And it was instantly and universally compatible with our projector.