Category Archives: Uncategorized

Additional illuminants

Color computations were limited to illuminants A, D65 and C up to now. Additional illuminants could be imported and used for computations – however, this option was somewhat hidden and very likely overseen by many users.

With have now, starting with object generation 4.86, implemented 15 additional illuminants (D50, D55, D75, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12).

Parameter fluctuation

Doing a parameter fluctuation you were limited to a maximum of 250 realizations. Starting with object generation 4.86 this limit has been increased to 65000.

Since computations with many iterations take quite a long time the status bar at the bottom of the main window (if not visible, show it by hitting the key ‘s’ on your keyboard) shows the progress of the work.

Results of the parameter fluctuation are stored in the workbook. We recommend to store the workbook to a file and open this file with Excel in order to further process the data. The workbook component integrated in SCOUT or CODE is not very convenient to handle large amounts of data.

New fit option

We have included a new fit option which helps to increase the speed of analysis in time critical applications: In methods which use pre-fit sets in the list of fit parameters you can now include the current fit parameter values in the pre-fit search. This eventually avoids many fit iterations if differences between consecutive measurements are small.

The new feature can be turned on or off in the dialog of fit options.

 

Climate settings, window tilt angle, pane absorption and temperature computations

We have upgraded several CODE functions related to the technical performance of glazing products.

You can now compute solar pane absorption and pane temperatures for up to 6 glass panes.

The list of integral quantities in CODE features new menu items (in File/options):

  • set global climate parameters used for U-value, g-value and temperature computations
  • set the window tilt angle for all U-value, g-value and temperature computations

You can display climate values using labels in a view with the following names:

  • ‘selected_climate’ (shows the name of the climate)
  • ‘selected_climate_parameters’ (shows values of outside temperature, external heat exchange coefficient he, inside temperature, internal heat exchange coefficient, solar power
  • ‘selected_climate_ISO52022’ (shows the name of the climate settings for ISO 52022-3 computations)
  • ‘selected_climate_parameters_ISO52022’ (shows values of outside temperature, external heat exchange coefficient he, inside temperature, internal heat exchange coefficient, solar power, used for ISO 52022-3 computations)

You can display the value of the window tilt angle using a label called ‘window tilt angle’.

Finally, you can call the following new script commands to open user dialogs in the main view:

  • edit climate
  • edit window tilt angle

WOSP-MAC

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°.
wosp_mac_1

Measurements can be performed using a very simple software interface – they take about 10 seconds.

wosp_mac_2

Results for various samples are collected in a workbook which can be exported as Excel document.

wosp_mac_3

WOSP-ART

20180611_154747

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.

20180611_154426

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.

20180611_154455

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.