The WOSP MRC-DESKTOP system records reflectance spectra of glass panes or other flat and large samples for 30°, 45° and 60° angle of indicence.
Spectra are recorded in the wavelength range 380 … 1000 nm using halogen light sources and a Zeiss MMS 1 spectrometer. After calibration the time to acquire the required sample spectra is less than 10 seconds.
The image below shows the first demonstration prototype as presented at the ICCG 11 exhibition. The metal frame is based on ITEM parts which allow very flexible modifications of the setup, adapting the system to customer needs. All required optical parts are above the sample plane – in principle there is no size limit for samples.
Recording data requires 3 steps:
- Redording of the dark signal of the spectrometer. This takes about 3 seconds and does not require any action except a mouse click.
- Secondly, a reference mirror has to be placed at the sample position, and the signals for the 3 angles are recorded. Data acquisition takes less than 10 seconds.
- Finally, data are recorded for the sample which is placed on the table.
We recommend to take dark and reference spectra at least every 15 minutes.
The system is operated using our CODE-NF software which is a restricted version of our CODE thin film analysis and design software package. In CODE-NF you cannot perform automatic parameter fits – all other features of CODE are contained in CODE-NF.
CODE user interfaces are very flexible. We recommend to have a few buttons only, triggering dark, reference and sample measurements as well as the export of the obtained data.