Optical design tools allow more and more complete physical phenomena simulation and illumination design itself
becomes more and more complex. A big part of these designs uses volume scattering materials. However, those are not
yet implemented in such tools. For this reason we worked on a way to characterize volume scattering materials.
How can we characterize and implement volume scattering materials in optical design tool for illumination
We worked on two ways of characterizing volume scattering materials based on real Bidirectional Scatter
Distribution Function (BSDF) measurements made with Reflet bench. LightTools software with its Henyey-Greenstein
and Mie scattering model was also used in the process of material characterization.
The study showed that the results with both Henyey and Mie characterization, allow simulation of volume
scattering materials within of 5% precision compare to real measurements.
Thanks to such simulations it is now possible to have custom shape illumination design using volume scattering
materials from a library. Sony Ericson was the first user to benefit from these study’s results.