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
For additional terms and definitions, check out my Home Theater Glossary


Comments
I want to purchase a home theater. Came across an article on Samsung HT-Q20
http://www.octanmen.com/articleDetail/118/samsung-ht-q20-soothing-digital-experience.htm
Was quite impressed with the key features listed there, but could not find that if it is RPTV compatible or not. If anyone can go through the article and find out the same for me???