EULUMDAT / IES File Validator
Validate photometric data files against EULUMDAT and IES LM-63 format specifications. Checks structure, angles, candela values, and metadata.
Drop a .ldt or .ies file, or browse
EULUMDAT and IES LM-63 photometric data files
What this tool checks
Checks
- ✓ Format auto-detection (EULUMDAT vs IES by extension or content)
- ✓ EULUMDAT: line count, numeric fields, symmetry vs C-plane consistency
- ✓ EULUMDAT: DFF and LORL in 0-100% range, angles in valid ranges
- ✓ IES: valid IESNA header line, TILT line present
- ✓ IES: correct count of vertical angles, horizontal angles, and candela values
- ✓ Both: monotonically increasing angle arrays, non-negative physical quantities
- ✓ Extracts summary metadata (luminaire name, manufacturer, dimensions, flux)
Does not check
- ✗ Photometric accuracy (whether candela values are physically plausible)
- ✗ Compliance with specific luminaire performance standards
- ✗ CIE flux code calculations
- ✗ Whether the distribution matches the luminaire type claim
- ✗ 3D visualization of the light distribution
Photometric files sitting outside the product record?
Rastro's lighting data AI agent validates IES and LDT files, extracts the useful specs, and feeds structured values back into luminaire data at scale.
See it on my data