All About Custom Rear
The CinemaSource Home Theater Design Handbook. Copyright 2002
All rights reserved. Printed in the United States of America.
No part of this book may be used or reproduced in any manner whatsoever without written permission, except in brief
quotations embodied in critical reviews.
CinemaSource is a registered federal trademark.
For information contact: The CinemaSource Press, 18 Denbow Rd. Durham, NH 03824
All About Rear Screen Systems
Custom-built rear screen systems are the big
brothers of the 45" to 80" rear screen televisions
commonly seen at A/V retailers. In fact, the internal
construction is almost identical, just scaled up in size.
Look inside one and you will find three basic elements: A
large rear projection surface, a high- brightness projection
display and a mirror (or two) to fold the light beam.
Although they are expensive to build, custom-built rear
screen systems appeal to many people because the
mechanics of the display are hidden from view. The result
is just a huge picture that appears to be “hanging on the
The imaging sources behind most custom-built rear
screen systems are three tube, front projection video
monitors. These are used because the manufacturers of
CRT projectors almost always build in circuitry that allows
the picture scanning to be easily reversed for rear screen
In general, because the display applications are so similar,
virtually all the features and requirements that apply to
front projection applications also apply to rear screen
applications. For example, if you want to display standard
NTSC-rate 4:3 video images, you want a video-grade
projector. If you have in mind line doubling, look for a
data-grade projector, and if HDTV compatibility and 16:9
images are important, you want a graphics-grade
projector. One feature, however, you do want, regardless
of the grade of projector you chose is the capability of
remote-controllable convergence. For those who are
unfamiliar with convergence alignment, this is the