Use the Photometric Data Import node to import photometric data files that can be used to initialize the ray intensity and power as a function of the initial ray direction. The
Photometric Data Import node supports the
*.ies file extension, the standard photometric data file format of the Illuminating Engineering Society of North America (IESNA).
Enter a Filename, or click the
Browse button to locate a photometric data file. When a valid file path has been entered, click the
Import button to load the photometric data into the model. A shortened version of the name of the photometric data file will then be displayed, along with a
Discard button. Click the
Discard button to discard the loaded photometric data and clear the
Filename field.
The format of the imported photometric data file must be consistent with ANSI/IESNA LM-63-02 (R2008), IESNA Standard file format for the electronic transfer of photometric data and related information, Illuminating Engineering Society (2002).