There are five basic elements in the construction of a rear-projection television.
First, there is the type of projector technology used to produce a video image.
Second, the type of lens assembly used to magnify the projected image.
Third, the necessity to employ a mirror to reflect the projected image.
Fourth, the screen upon which the reflected image is presented.
Fifth, the sealed box that contains all of the previous elements.
For more details on rear-projection television technology and types, check out my reference article: Rear Projection Television - What You Need To Know

