The portable Viso LightSpion® enables you to fully measure any light source within 30 seconds. It measures all the photometric data, while no expert knowledge is required. The LightSpion can even be used outside of a laboratory or dark room. Making it a great tool for on-site inspections and empowering your sales force.

The systems consists of a pre-calibrated spectrometer operating in the visible light range 360-830 nm, and a goniometer. Having measured the full spectrum from a light source and collected a full 360° photometric field distribution, the device then calculates integrated CRI, colour temperature and a complete luminous flux in lumen. A built-in high-speed 70 K/sec power analyser measures voltage and current, it instantaneously presents precise information about power consumption, hence calculates the light efficiency in lumen/watt.
The LightSpionTM suitcase is easily connected to your computer via USB. The device comes with the Viso Light Inspector software that is available for downloading from our website. The user interface displays the measured data in a clear and simple way, and also allows a possibility of a more detailed investigation of the obtained data.

light-measurement-software  Viso Light Inspector Pdf

The LightSpionTM supports the new EU regulations (EU No 1194/2012), which require directional lamps to be measured in a 90° or a 120° cone. A mere selection of the measurement cone of either 90° or 120° sets the automatic calculation.You are able to insert your own logo into the data files. The measurements are exported to a variety of data formats for the convenience of lighting technicians and designers: IES, LDT, PDF, PNG or CVS.You can use your webcam to take pictures of the measured sources or you can insert existing images of the lamps into the data files, which saves a lot of time when searching for a particular measurement. Additionally you are able to email the measured data files – a truly useful software feature, which releases any hassle from handling data storage. Measuring light with the LightSpionTM is probably the lightest way to measure!The technology implemented in the LightSpion allows for high accuracy measurements of luminous flux in lumen. Learn more about the accuracy of the flux measurements here.


A New feature! It has become possible to measure the linear light sources like LED tubes and strips. The procedure is simple: place the linear light source on the goniometer, insert the length of the source into an appropriate software window and begin your data acquisition. Find more information about the exact setup in the user manual, page 13.
The LightSpion portable goniometer system has been tested and verified by the Department of Photonics of the Technical University of Denmark (DTU). Click below to read the full report.


Click here to try the Viso Light Inspector software and get full LightSpion documentationClick large and download


  • Weight……………………………5 Kg
  • Dimensions………………………41x28x10cm
  • Power range……………………90-280VAC
  • Maximum light source power…3Amp (660W@220V,330W@110V)
  • Measures…………………………Lumen, Peak candela, CRI, Colour Temperature, Lumen/Watt, power and Power Factor.
  • Wide lumen range………………10 lm to 10000lm
  • Maximum light source size……80mm (diameter)
  • Pre-calibrated plug & play solution

Software specifications:

Compatible with: Windows 2000, XP, 7 32bit – 64bit
Save or email any measurements
Detailed power analysis with power scope
Automatic light gain control
Realtime spectra and power update for quick analysis
Attach one or more pictures to your measurments
Use web-cam to snap picture as quick reference

Click here for more specification


The case is 5kg, making it exceptional light weight and it is watertight protected.


With built-in power analyser that gives you information instantly.


Quick and easy, the system is pre-calibrated and ready to be used.


Essential measurement data displayed in real time: Lumen, Lumen/Watt, Candela, CRI, Power and PF.


With a spectrometer sensor that gives you all photometric data in one system.



Accuracy report

User manual
November 14, 2017


Full product brochure 2018