The irradiation characteristics of the solar simulator under a variety of operating conditions were investigated using an optical simulation model, which was experimentally validated and provided physical experiments with reference data with savings in both time and cost.
The display was gamma-corrected using an OptiCAL photometer (Model OP200-E) and software by CRS.
Surface morphological structure was investigated by using an optical microscope (model Eclipse Ci/L, Nikon).
One experienced observer (MKH) analysed the wear scar area of the inserts using the following approach: The wear scar areas were visually identified using an optical stereomicroscope (model Z30L, Cambridge Instruments, Cambridge, Massachusetts).
Particle counts were measured in real-time for house 3 (before and during intervention) using an optical particle counter (model 1.108; Grimm Technologies, Douglasville, GA).
Spinal cord perfusion was measured using an optical laser Doppler probe (Model MP4s, G26 tube with a blunt end diameter 0.46 mm: Moor Instruments, Axminster, Devon, UK).
In both substudies, the erythema index (EI) was evaluated using an optical densitometer (X-Rite® model 404; X-Rite, Inc., Grand Rapids, MI, USA) and was calculated as follows: Evaluations were performed bilaterally on treated and untreated areas at baseline (T0; before product application), immediately after stripping (Ti), and 30 minutes (T30m) and 2 hours (T2h) after a single application of FRC.
Afterwards, the mathematical model was validated using an optical ray tracing software called TracePro.
Detailed visual comfort predictions including useful daylight illuminance, daylight uniformity and glare may also be made, using a complementary optical model run using RADIANCE simulations.
