Light measurement systemS FOR GENERAL LIGHTING

General lighting can be defined as the functional and decorative lighting that surrounds us all in our everyday lives.

All professional lighting planners need 3D light files to simulate lighting design in workplaces and public spaces. Consequently, professional providers of general lighting fixtures and light sources need laboratories to the produce so-called IES and LDT files and lots of other data. In parallel, importers and producers of light sources for household use also need to characterize their products in detail to comply with local legislation. In addition, extensive color data is needed: CCT, CRI, TM30 etc.

WHY GET your own lab?

  • Having your own light measurement system pays off. Consequently, our clients generally claim that pay-back time is 6-12 months
  • Your internal R&D will perform much faster and gain competencies. Better optical solutions and faster time-to-market
  • Build trust in your products and brand and strengthen your client relations by having lots of data ready
  • Having your own lab makes is possible for you to QC products from sub suppliers systematically
General lighting in building


Thorough testing and characterization of your products builds trust. With a lot of detail in your data sheets and presentations, customers will believe in your solutions and your competencies. This true both for your own products and third-party solutions. Viso software makes issuing measurement reports easier than ever. Reports can be fully customized to fit your own corporate identity.

Your business


Office lighting

Lighting in health care premises

Lighting in production facilities

School and sports lighting


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Basic light measurement system outputs

light measurement system

Light distribution curve
With high measurement detail (up to 72 C-planes and up to 0.1-degree gamma resolution) there is data in abundance to plot. 3D plot are included as well

light measurement system

As light is detected with a Viso fast spectrometer sensor, spectral data is recorded in every measurement. A Viso goniometer will even provide ‘color over angle’ data (not possible with an integrating sphere) 

CIE 1931 color coordinate plotCIE 1931 color coordinate plot

CIE 1931 color coordinate plot
The integrated spectrum can be plotted in a CIE 1931 x,y-diagram. Provide your color target, and the color difference (Duv) and the SDCM value (MacAdam steps) are prompted

Light measurement power curve

Power characteristics 
All Viso goniometers have a built-in power analyzer. The analyzer will help you to determine when light sources are stabilized. Important power data (wattage, efficacy, power factor etc.) are standard

Further outputs

Fundamental radiation data

  • Total lumen
  • Peak Candela
  • Beam angle
  • LOR Up/Down
  • Polar light distribution curves
  • Linear light distribution curves

Color and color deviation data 

  • CCT / Correlated Color Temp. [K]
  • CRI / Color Rend. Index / Ra (1-14)
  • TM30-18 indices and graphics
  • CQS index and graphics
  • CIE 1931 x,y-diagram and Duv
  • SCDM (MacAdam steps)

Lighting design and data export

  • UGR table
  • Isolux/iso-candela plots
  • BUG rating
  • Full raw data export to MS Excel etc.
  • Optional web-based tracking system
  • Customizable PDF reports

Power and warm-up data

  • Wattage [W]
  • Current [A] and voltage [V]
  • Mains frequency [Hz]
  • Current and voltage THD [%]
  • Warm-up time and variation
  • Automatic stabilization

…and much, much more…

Popular additions

Add great tools to your light measurement system, capture more data and ease your work

The LabFlicker instrument records all contemporary TLAs (temporal light artifacts): Flicker and stroboscopic effects including SVM and PstLM. LabFlicker connects to all Viso systems

Add a LabTemp 3-port temperature probe system for monitoring ambient lab temperature and 3 temperature spots

LabPower is a dedicated Viso 250 W AC power supply and power analyzer. Complies with EN13032/CIE and S 025/LM79. Stable output – removes all mains voltage fluctuations