Folded Optics - Runco VideoXtreme VX-11d Installation & Operation Manual

Installation

Folded Optics

In rear screen applications where space behind the projector is limited, a mirror may be
used to fold the optical path, as shown in Figure 3-5. The position of the projector and
mirror must be accurately set. If you are considering this type of installation, contact your
dealer for assistance.
Screen
Figure 3-5. Folded Optics
For best performance, always use "first-surface" mirrors in your
Tip
rear-projection installation (as opposed to conventional,
"second-surface" mirrors with the reflective surface behind a
transparent substrate such as glass or acrylic).
First-surface mirrors provide a strict reflection without the
"ghosting" effect seen with a second surface mirror, where a faint
secondary reflection could be observed coming from the front
surface of the glass.
Mirror
22 Runco VX-11d Installation/Operation Manual