LabRailLabRail for Light Measurement

Sensor rail system

The unique LabRail® system together with a LabSpion goniometer is a complete light measurement solution. The 2-axis goniometer enables the system to measure the full 3D light distribution of any light source giving lighting professionals comprehensive .LDT and .IES files.

The rail solution allows easy repositioning of the sensor. The sensor travels securely on the up to 16 m long rail along the optical axis. Once the light source is in place there is no need for further alignment of the sensor.

Labrail with LabSpion goniometer

12 meters (8 x 1,5 m) of rail is standard – but both shorter and longer rails are available. The rail assembly is suspended from the ceiling in the laboratory. Sensor movement along the rail is motorized and sensor distance can be optimized for any size of light source. Power and data are transmitted seamlessly trough the rail eliminating all cables. Owners of LabSpion systems may replace the standard tripod arrangement with the rail system upgrade kit.

LabRail Suspension2
Wire suspension principle: Every other wireset is crossed to ensure firm stabilization horizontally with a minimum of wires

Mechanical assembly

There are two installations methods:

Either with brackets directly on the ceiling, or with a wire system

Installation with wires: Hook the suspension steel wires to your lab ceiling (12 m rail equals 9 wire sets and 18 hooks). Suspend the rail from the wire via griplock wire fasteners (3-4 persons needed). Level the rail and cut off excessive wire ends. Cross every other wire set to stabilize sideways 

Installation without wires: Mount the installation brackets directly on your ceiling structure. Attach the rail system to the ceiling brackets, and carefully adjust to make straight and level.

The wire suspension is very flexible when it comes to ceiling heights. The suspension wires can be as long or as short as desired. Suspension hooks should be firmly attached to the building structure. Wires must be angled vertically about 35-55 degrees to the ceiling to improve stability. Gravity holds the construction in place.

The whole rail is assembled on the floor. The 1.5 m pieces are attached to one another with connection pieces for firm alignment and electrical connection. A small group of people then lifts the rail approximately the desired height (above head height, approx. 2 m elevation) while securing the rail to the connectors.

Slide on the dolly holding the telescopic arm onto the rail. Mount an injector module at at the far end of rail, and an end stop closest to goniometer. Connect the injector to the goniometer base with a single cable. Mount your LabSensor at end of the telescopic arm and adjust the arm to the height of the goniometer optical axis.

All power and communication from sensor and laser module goes through the rails and dolly, which means the rail is cable connected in one point. Viso LabTarget is included.


Always contact Viso System to evaluate suspension options to make sure RailRRail is suited for your specific laboratory.

  • The rail must be firmly attached to the building structure (not to suspended ceiling parts or the like)
  • In wire suspension systems: Suspension wires must be symmetrical around the rail. All wires must be angled about 35-5 degrees to the ceiling
  • Mounting directly on the ceiling is possible – please contact Viso Systems for more information.


Works seamlessly with LabSpion

Never measure distance manually again

Repositioning of sensor in only 5 seconds

Perfect alignment every time

No cables. Data over power line

Free your floor space

Includes Viso LabTarget

Easy suspension from ceiling

Main applications


Get more information

LabRail Specifications

Measurement Results

As any other LabSpion


Sensor distance range: 35 cm to 1200 cm (standard – can be shorter or longer)

Sensor distance setup: Automatic

Power supply input 90 to 260 VAC, 50/60 Hz

Power 8 W idle / 90 W peak

Standard system weight @1200 cm
is approx. 25 kg

Other Viso Accessories

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

Add a CALI-T50 lamp to make your own system calibrations

The LabFlicker instrument records all contemporary flicker metrics including PstLM and connects to all Viso systems

The extender of the LightSpion allows you to measure lamps that are up to 22 cm in diameter by extending the sensor distance

Upgrade your existing sensor to provide a broader measurement range (eg. UV) or a more accuracy