Professional lighting design requires accurate photometric data. YNDLUX provides complete technical support for lighting designers and specifiers — IES files, LDT (EULUMDAT) files, spectral data, and DIALux/Relux-ready product libraries for every luminaire we manufacture. Direct from the factory that controls optical design, testing, and production.
Photometric Files Available
LDT (EULUMDAT) Files
The standard photometric format across Europe and much of Asia. Contains:
- Luminous intensity distribution (candela values at all angles)
- Luminaire efficiency and light output ratio
- Beam angle data (half-peak intensity)
- Physical dimensions for accurate 3D placement
YNDLUX provides LDT files measured on our in-house goniophotometer for every product variant.
IES Files
Standard format for North American markets (IESNA LM-63). Same photometric data in IES format for use in AGi32, Visual, and other North American design software.
Spectral Power Distribution (SPD)
Available on request for color-critical applications (museums, galleries, retail, healthcare).
Design Software Compatibility
YNDLUX photometric files are tested and verified in:
- DIALux evo — Import LDT directly into the luminaire database
- Relux — Full product data including LDT and product images
- AGi32 — IES import for calculation and visualization
- Visual by Acuity — IES format
What We Test In-House
YNDLUX operates a photometric laboratory with:
- Goniophotometer (Type C) — Measures luminous intensity distribution, calculates lm/W efficiency, beam angle, and generates IES/LDT files
- Integrating sphere (1.5m) — Measures total luminous flux, CCT accuracy, CRI/Ra/R9, and color consistency (MacAdam ellipses)
- Spectroradiometer — Full SPD measurement for color rendering analysis
All photometric data is measured on production samples (not theoretical calculations).
Technical Documentation Package
For every YNDLUX product, specifiers receive:
- ✓ LDT file (goniophotometer-measured)
- ✓ IES file
- ✓ Technical datasheet (PDF)
- ✓ Installation guide
- ✓ DXF/STEP 3D drawings (on request)
- ✓ CE/ENEC/CB certificates
Free Lighting Calculation Service
Send us your project floor plan and requirements. Our in-house lighting designers will provide:
- DIALux/Relux simulation with compliance verification (EN 12464-1, etc.)
- Product specification and bill of quantities
- Energy calculation (installed watts/m², annual kWh)
- UGR verification at observer positions
No cost, no obligation. This service is available to specifiers, designers, and contractors worldwide.
Request Photometric Files
Need IES/LDT files for a specific YNDLUX product? Contact our technical team:
- Email: info@yndled.com
- Download center: www.yndled.com/downLoad
- Contact form: www.yndled.com/contact
