The Bidirectional Radiometric Scanner
Our newest optical instrument for measuring the angular light distribution of lamps and the angular transmittance/reflectance of arbitrary materials:
This scanner is a custom made version of a design produced by the pab consultancy. 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 (see historical note below).
Current Status: The mechanical parts were fabricated in one of the largest metal presses in Germany. Two instruments were then assembled. One will remain with the developer for ease of parallel testing and debugging. The final connections of the electrical and mechanical systems will take place at LBNL in April 2008. The following sequence of images chronicle the creation of this unique device.
Figure. Metal Press
Figure: Fabrication of metal parts.
Figure: Twin instruments.
Figure: Approximation of finished product