Our newest optical instrument for measuring the full bidirectional transmittance and reflectance distribution functions (BTDF and BRDF) of light-scattering, light-redirecting and light-emitting materials:

This scanner was designed and built by pab advanced technologies Ltd to meet our specific needs. This version will be able to span the full solar spectrum with high speed, precision and angular resolution. Some of the principles of operation are based on an early scanning radiometer developed by LBNL

Figure. Rendering of instrument (by Peter Apian-Bennewitz)