Front screen projection works like a rear projection TV, only the cathode ray tubes are built into a separate unit that projects the image onto the front of the TV screen. The screen and projector are separate so the viewing size is mainly limited to the size of your room. More expensive front screen projectors can produce a nice bright image. However, they will work only in a darkened room.
How Projection Television Works In this article, "How Stuff Works" looks at the technology of projection TVs and portable projectors.
