Ideum MT-50, Инструкция по сборке

Страница: 23 / 40

MT-50 Multitouch Table DIY Building Instructions–Version 1.2 - 4/5/11 - Page 23
Installing & Calibrating the Mirror
The mirror used in the MT-50 is a first surface mirror. First surface mirrors
have no gap between the object and its reflection, because the mirror
coating sits on the top of the glass rather than on the rear of the glass. This
also prevents ghosting, which occurs when the projector image bounces off
the bottom of the glass and back through. First surface mirrors are more
prone to scratching, so as you take off the plastic sheets protecting the
mirror to place it in the frame, it’s important to be careful.
Assemble 3 sides of the mirror rig. There will be some small L brackets in
the Bosch kit that will allow you to assemble the 45 degree pieces. You
may want to leave the protective film on the mirror for the next few steps.
Once 3 sides are assembled, slide the mirror into the rig. Place the 4
th
side
on and secure all of the setscrews. Pull up the protective film around the
perimeter of the mirror, and apply the thin rubber stripping that came with
the Bosch kit. This will keep the mirror from sliding around inside the rig.