The optical bench consists of the following parts:
a particle source (light bulb)
a collimator producing a point like source
the lenses with the following focal length:
25 mm
30 mm
40 mm
50 mm
60 mm
80 mm
100 mm
2 pepperpot plates with
9x9 holes of 1 mm distance
5x5 holes of 3 mm distance
a screen
a digital CCD camera
Figure
1: Photo of the optical bench