material: PMMA, EP,PUR, UP and Acryl.
To use the radiant power of a single light source lossless, effectively shaped light conductors are essential. Equally important, however, are the textures of the light-conducting materials and the processibility of just these
Transitions, material changes, bridges and obstacles in the material reduce the conductivity and should therefore be avoided. An effective light scattering calls complex shapes and geometries which takes the reflections in the light-conducting material into account. Complex optical fibers can therefore seldom milled or cut from one piece.
For this reason, I used clear casting resins to create different shapes and geometries. The aim was to create a highly diffusing light from a single cast which already included all technical components. The first test casts were in the form of a crystal. The resins were tested for light conductivity, UV resistance and process-ability to determine a resin of low viscosity which can be processed bubble-free, crystal-clear, solvent-free and with almost no shrinkage.
With the knowledge gained, rules for shaping and processing were set for the final cast. Out of 10 different materials PMMA resin was found to be the most suitable substance with the best overall properties.The shape of the lamp is a revolved wedge in its basic design. The radiant source, a LED-stripe, which is moulded in the casting, scatters its light power inwards where it is then refracted from the side of the wedges up and downwards. Due to its convex and concave sides, the radiated light is focussed to a spot on one side and diffused to the other side.
Wenn´s dunkel wird gehts los – mid term project – Prof. Hatto Grosse – SS 2014