This spectrometer system records simultaneously reflectance and transmittance spectra of the same sample spot. It uses a halogen light source and two array spectrometers which record spectra in the spectral range 380 ... 1050 nm. Typical Acquisition times are 1 s or less. Light source and spectrometers are connected to the probeheads by fiber optics.
The size of the illuminated sample spot can be varied from 1 mm to 1 cm. The angle of incidence is about 5 degrees.
A scanning table (10 cm by 60 cm) can be moved along its long dimension, and automatical measurements of R and T at pre-defined positions are performed. The software driving the spectrometer and the scanning table can transfer the measured spectra to CODE for analysis and pick up the results. Alternatively, all spectra can be saved and be processed offline in a CODE batch operation.
The acquired spectra are saved in several a simple text format with two columns for the wavelengths and the corresponding reflectance or transmittance value (default file extension *.xy). The spectral values are absolute reflectance or transmittance values (range: 0.0 to 1.0).