Rear projectors are available with screens ranging from 40 to 80 inches, and the increased size brings a sense of drama and involvement to films and sports events that a direct-view set can't achieve. Instead, rear projectors basically install front projectors into a box and, using mirrors, project the image onto the back of a specially adapted screen. The use of the mirror shortens the necessary projection distance and gives rear-projection sets a narrow profile. This allows them to sit close to the wall. If you're really serious about picture, you may want to opt for a front-projection video display.
Front projectors offer the best image quality and color accuracy, typically at the highest cost.
Therefore, front projectors require complete darkness for the image to reach the screen. The sheer size of the image that a front projector can produce elevates the movie experience to a new level. This is the point where you'd rather watch a film at home than go to a theater. The screen quality is often an overlooked aspect of front projection, but it is also critical to the look of the displayed image. For an additional investment, you can add a device known as a line doubler or quadrupler, which actually increases the number of scan lines projected so that the visible lines endemic to the video format are virtually eliminated, providing the clearest possible picture in a front-projected video display.