On screen stereo viewer

Step 2 The inside of the viewer

The viewer itself is made from a wooden box. The side toward the computer is mostly open. At both ends there is a mirror at 45 degrees, reflecting the light from the screen inside the box. In the middle of the box are 2 mirrors in a V shape of 2 X 45 degrees reflecting the light out of the box toward the observer. 2 holes on this side allow the light to reach the eyes.