Environmental Engineering Reference
In-Depth Information
Fig. 5.9 Measurement of the primary mirror to identify the optical axis
The first luminaires that were developed for the HSL system used side-
emitting PMMA rods that were etched with a pattern of precision light-
scattering grooves. The patterned grooves, shown in Fig. 5.11, were designed
to provide uniform illumination along the entire length of the rods. The 1-m
Fig. 5.10 Fully assembled prototype HSL concentrator and tracker
