Multiple angle reflectance measurements
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.
WOSP-MAC (multiple angle color sensor) is a lab instrument that measures color values at fixed angles of incidence of 30°, 45° and 60°.
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.
An error in the computation of carrier mobility for the extended Drude model has been removed. The new (hopefully correct) values are all smaller than the previously computed values.
Once youhave optimized the design of your coating product with respect to angular variation of color you have to check if it really performs as CODE predicts.
The prototype described in this section will do the job: You can record absolute reflectance and transmittance spectra in high quality for the range 8° to 85° of the angle of incidence. The 85° are possible only for thin samples, with thickness below 5 mm. You do not need a calibration mirror since the 100% reference measurement can be done with light source and detector facing directly opposite to each other.
WOSP-ART consists of a light source and a detector mounted on arms which can be rotated individually. Spectra are recorded for the wavelength range 380 … 1100 nm. Extensions to the UV (down to 280 nm) and the NIR (up to 2500 nm) are possible.
Measurements are performed using our CODE software which can export results to data files or external SQL databases.
Here is a video demonstrating the operation of WOSP-ART.
You can now open up to 4 inspection windows in BREIN, showing information about 4 different sets of results.
This problem has been described in a previous post. The recommended installation of the Microsoft redistributable package does not seem to solve the problem in every case.
We have made the missing DLLs available on our website. You can download the files here and copy them to your SCOUT or CODE program folder directly, without executing any installation routine.
The relevant program folders are (very likely) c:\scout\ (in the case of SCOUT) or c:\code\ (for the CODE software).
On monitors with high dpi values (small pixel size) Windows 10 sometimes decides to scale text output on graphics pages. In this case main view graphics of SCOUT, CODE and BREIN may look ugly, like on low resolution screens.
If this happens on your computer you can right-click the program file (scout.exe, code.exe or brein.exe) and select ‘Properties’ (or ‘Options’) and then open the tab ‘compatibility’. Check the option ‘Disable display scaling on high DPI settings’ as shown below:
That should solve the problem.
Thanks to S. Eraslan for pointing out this solution!
In addition to screenshots, BREIN now exports results to Excel and csv files in the viewer folder. These data can be picked up by custom made programs to visualize the current state of the production line.