Photometric File Viewer
Upload an IES or EULUMDAT photometric file to see the candela distribution, beam and field angles, and luminaire metadata.
Drop a .ies or .ldt file, or browse
IES LM-63 and EULUMDAT photometric data files
What this tool shows
Displays
- ✓ Polar candela distribution diagram (C0/C180 plane)
- ✓ Beam angle (50% of peak intensity) and field angle (10% of peak)
- ✓ Peak candela intensity and angle
- ✓ Luminaire name, manufacturer, test lab, dimensions, lumen output
- ✓ LOR (light output ratio) for EULUMDAT files
- ✓ Raw file content with line numbers
Supported formats
- ✓ IES LM-63 (.ies) - North American standard
- ✓ EULUMDAT (.ldt) - European standard
Limitations
- ✗ Does not render 3D isocandela surfaces
- ✗ No multi-plane overlay (shows C0/C180 only)
- ✗ Does not validate data accuracy or standards compliance