Integration Guide

Mounting the Scan Engine
Integration Guide 9
Figure 6. Exit window positioning – perpendicular window
Figure 7. Exit window positioning – tilted window
Avoiding scratched windows
Scratches on the exit window can strongly affect the reading performance. It
is recommended to use an exit window having a scratch-resistant coating
and to position the engine window in a recessed position.
Window material
The exit window is an integral part of the imaging system and should be
designed and selected to preserve the optical quality of the system. It is rec-
ommended to use only cell-cast plastics or optical glass.
Common materials and their characteristics are shown in Table 1on the fol-
lowing page.