Lumen is a tangible light simulation that allows its users to discover and experience the basics of geometrical optics (reflection, refraction, dispersion, focusing light using a lense) in a playful way. Lumen consists of a number of levels in which you have to get a certain number of light rays to the goal - using the mentioned methods.
It was developed in ActionScript 3. Have a look at the fake concept video to get an idea - we didn't have enough time and money to fully implement it.

The tangible interface (glassy objects) represents the single objects used to manipulate the rays.

To intensify the learning experience a sound concept was developed - each element triggers its corresponding sound when interacting with a light ray.

The project was part of my second term at the Hochschule Darmstadt and was developed together with Michael Longerich and Markus Schuricht. It was supervised by Stephan Koch, Prof. Claudia Söller-Eckert, Prof. Dr. Arnd Steinmetz, Dr. Ingo Stengel and Prof. Tsunemitsu Tanaka.