Glass for buildings and cars may have different appearance with respect to color when the viewing angle changes. The angular dependence of color values is important for the design of glass coatings, and hence it is important to verify that the wanted color values are obtained after coating deposition.

The WOSP multiple angle color sensor is a lab instrument that measures color values at fixed angles of incidence of 8°, 35°, 55° and 65° in reflectance. Transmittance measurements at these angles are possible as well.

Glass samples with a width of up to 600 mm are placed on a sample stage that slides into the measurement cabinet.

Measurements can be performed using a very simple software interface – they take about 10 seconds. Results for various samples are collected in a workbook which can be exported as Excel document. In addition, results (measured spectra and related integral quantities) are stored in a JSON file for each sample.