These TV titans have a flat plastic screen between about 40 inches and 70 inches, measured diagonally. The image you see is the product of light projected from red, green and blue picture tubes onto a mirror, which then reflects it onto the screen. Projection TVs, whose image quality had been clearly inferior to that of direct-view sets, are now capable of producing a fine picture. The brightness of the projected image may still change, however, depending on where in the room you're watching from. The difference can be especially noticeable if you're sitting down and you stand up.
Projection TV is primarily for sports and movie fans with fairly deep pockets.
And you must be willing for your projection TV to dominate that room. A hefty piece of cabinetry that typically comes on casters, a projection TV can't easily be concealed behind closed doors when you're not watching. These sets can display high-definition signals. With their high visual resolution and ample size, HDTV projection sets offer a satisfying approximation of the movie-theater experience. However, direct-view HDTV sets are growing bigger, and their prices are coming down.