The bioscope is a device created to project microorganisms onto a wall (for example) so they can be seen by the naked eye scaled up much larger than they really are.

The bioscope uses a laser and a lens to do this. The laser shines through the microgoranisms creating a very small shadow of said organisms, and then when the light is broken up with a lens into a much larger picture the microorganisms become visible. 

However I did not acheive this to the scale I had wanted and my laser projectors do not project at a large enough scale for miroorganisms to be seen. However they do project things at a large scale and create some very cool effects when the water reacts with the laser.