To test laser scanner from older post I am using very old Amiga software Lasermax. The Amiga computer itself is emulated with windows machine.
And just for fun, here is some laser beam experiments in lobby. Laser beam from red DVDRW laser is splitted by semitransparent mirror:
And here is some of Lasermax images:
Dual parallel laser beams.
Some optics on laser. There is some some prismatic splitter on the track.
The problems with hardware. It must be circle.
Original article dated 2008.08. This is red burning laser from DVD. It can burn paper, so it can hurt you last eye.