The portable Viso LightSpion® enables you to fully measure any light source of up to 8 cm in diameter within 30 seconds. It measures all photometric and spectrometric data, and no expert knowledge is required. Comprehensive LDT and IES  simulation files are standard outputs.

The LightSpion goniometer can even be used outside the dark room, making it a great tool for on-site inspections and also to strengthen your sales force. The special “ambient light correction” system automatically subtracts any steady ambient light from your measurement results.

With a weight of only 6 kg and no sharp metal parts, LightSpion can be carried as hand luggage during any flight.

The system consists of a pre-calibrated spectrometer operating in the range of visible light 360-800 nm and a goniometer. LightSpion measures the entire visible spectrum from a light source and gathers a full 360 ° photometric field distribution in two c-planes. Then the device calculates CRI, color temperature and a complete luminous flux in the lumen. A built-in high-speed 70 k/sec power analyzer measures voltage and current and instantly presents accurate information on power consumption and lumen per watt efficiency.

The LightSpion® suitcase easily connects to your computer via a USB plug. Included with the LightSpion goniometer is the Viso Light Inspector software. The user interface displays the measured data in a clear and simple way, while also allowing for more detailed investigation of the collected data.

A further feature of LightSpion  goniometer is that it is possible to measure linear light sources such as LED tubes and strips. The procedure is simple: Place the linear light source on the goniometer, type the full length of the source in the software window and start your data collection.

LightSpion Goniometer Specifications

Measurement method

Far field, type C horizontal
Flux range (@ 0.66 m): 10 – 50,000 lm

Standard spectrometer range

Standard 350 nm – 800 nm

Sensor distance range

65 cm (optional: 115 and 182 cm
w/ LightSpion Extender)

C-plane rotation

Standard 2 C-planes,
manual: Up to 8 C-planes

Light source diameter range

0 – 80 mm (optional: 0- 220 mm w/ LightSpion Extender)

Light source maximum weight

1 kg
(optional: 4 kg w/LightSpion Extender)

Power supply input

90 to 260 VAC, 50/60 Hz

Lumen, Peak candela

CCT, Spectrum, CRI, TM30, CQS, Beam angle, 3D Light distribution, Power specs, lm/W, etc.