English Suomi

Testing Services for Lighting Fixtures

EULUMDAT, IESNA, Light Distribution, Luminous Efficacy, Flicker, UV, PPF


Our goniolaboratory serves in the measurements of light distribution curves of luminaires. We use five goniophotometers for different types of needs, so we keep the delivery time short - results in up to 24 hours. Our measuring equipment meets the requirements of international measurement standards. With our goniophotometers, we measure the spectral, angular and temporal light distribution curves and light efficiencies of luminaires. The measurement data is reported in standardized file format of EULUMDAT/IESNA files suitable for Dialux / Relux. We also report the results in a variety of ways according to your needs in separate pdf reports.

Maximum dimensions of luminaires are 50 kg and 2.9 m.

Our services according to following measurement specifications:

  • EN 13032-1 Measurement of Photometric Data of Lamps and Luminaires
  • LM-79-08 Electrical and Photometric Measurements of Solid-State Lighting Products
  • CIE S 025/E:2015 Test Method for LED Lamps, LED Luminaires, and LED Modules
  • IEC TR 63158 Equipment for general lighting purposes - Objective test method for stroboscopic effects of lighting equipment

  • IEC TR 61547-1 Equipment for general lighting purposes - EMC immunity requirements - Part 1: Objective light flickermeter and voltage fluctuation immunity test method

  • CIE 232:2019 Discomfort Caused by Glare from Luminaires with a Non-Uniform Source Luminance

Luminous Intensity Distribution
Luminous Intensity Distribution
Standard measurement service contains  
  • EULUMDAT file (or IES if necessary)  
  • Short report (PDF/html)
  • Luminous intensity distribution (cd, cd klm¯¹)
  • Luminous flux (lm) / Light output ratio (%)
  • Downwards flux fraction, DWFF (%)
  • Input power (W)
  • Beam angle table (BA50, BA10)

Optional parameters:

  • Energy efficiency index, EEI
  • Luminance (cd m¯²)
  • Stabilizing curve
  • Optical flicker frequency, Flicker index, Percent flicker, Flicker risk classification
  • SVM, Pst LM flicker parameters
  • Efficiency of LED driver

Report for indoor luminaire

  • Standard report
  • Glare index UGR
  • Cone diagram (six customizable distances)
  • Floor illuminance (multicolor plot, grayscale, contour plot)
  • CU, CCEC ja WEC tables

Report for outdoor luminaire

  • Standard report
  • Floor illuminance (multicolor plot, grayscale, contour plot)
  • Simulation for street light category
  • Lognitudinal isolux figures at horizontal/ vertical planes (four customizable lux levels)

Report for Plant Growth Lights

  • Photosynthetic photon flux (PPF) in wavelength bands
  • PPF density distribution as a function of transverse and longitudinal distance
  • Cone diagram of PPFD in umol/m2/s (six customizable distances)
  • Illumination distribution of PPFD in umol/m2/s (multicolor plot, grayscale, contour plot)

Report for UV light sources

  • UV Spectral Radiant flux at UV-C, UV-B and UV-A wavelength bands in units of mW, or W
  • Cone diagram of UV irradiance in units of mW/m2, W/m2, or mW/cm2 (six customizable distances)
  • Illumination distribution of UV irradiance in units of mW/m2, W/m2, or mW/cm2 (multicolor plot, grayscale, contour plot)

Spectral measurement report 

  • Optical power (W), Wall-plug efficiency (%), Spectral efficiency of radiation LER (lm W¯¹)
  • Color coordinates (xy, u'v'), Correlated color temperature CCT, Color rendering index CRI/ Color quality scale CQS (Ra, R1-14) vs. angle and effective values
  • MacAdam ellipse / SDCM

Optional parameters

  • Spectral Radiance (W sr¯¹ m¯² nm¯¹)
  • Spectral Irradiance (W m¯² nm¯¹)
  • Photosynthetically active radiation, PAR / PPFD / PPF

Our measurement facilities are traceable to the Finnish and US National Metrology Institutes MIKES and NIST. 

Traceable light measurements and calibrations from Finland.