Horticultural lighting is the standard term used when lights are used for growing plants. Instead of lumen, data is displayed in the PPF value: PPF represents the number of photons radiated by a light source in the photosynthetically active wavelength interval 400-700 nm. As all Viso measurement solutions use fast spectrometer sensors, the PPF can be calculated for any of your measurements.

You might think this kind of data is not necessary for general lighting applications. However, if you work on illuminating open spaces like hotel lobbies, which include plants in the architecture, you might be required to specify PPF values.

Viso technology even allows you to generate 3D files in PPFD (photon flux density) as IES and LDT files. This way, you can use existing light planning softare, such as Dialux and AG132, to create your growth lighting shceme.

WHY GET your own lab?

  • Horticultural lighting is all about dosing light evenly to every plant – and avoiding loss of light. Modern growth light planning demands detailed light output files for every lighting fixture.
  • 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
Growth lighting in greenhouse


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

Growth Lighting

Horticultural lighting

Lighting for plant walls

Growth light for green indoor spaces


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Basic 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 plots are included as well

growth lighting spectrum

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) 

Photometric setup

Choose your preferred units
Switch between photometric and horticultural units on any measurement. Adjust your spectral output region to PAR or any other interval

Power curve from light measurement

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 growth lighting outputs

Fundamental radiation data

  • PPF (photosynthetic photon flux)
  • PPFD (photosynthetic flux density)
  • Efficiency µmol/Joule
  • PAR (total amount of photosynthetically active radiation)
  • Beam angle
  • Detailed angular field distribution

Lighting design and data export

  • Export to: IES and LDT in PPFD
  • Import your PPFD IES file into Dialux or AGI32 and set up a greenhouse
  • Heatmap plots
  • Full raw data export to MS Excel etc.
  • Optional web-based tracking system

Power and warm-up data

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

Popular additions

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

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

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

Upgrade your existing sensor to provide a broader measurement range (e.g. UV) or a wider sensitivity ranges