Machine Vision Illumination - STEMMER IMAGING


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Gardasoft VTR

Traffic monitoring LED strobe lights

The market for intelligent transport systems (ITS) is developing at a rapid pace. The Gardasoft VTR series of illuminators offers this market a range of high intensity solid state lighting solutions, to meet the ever increasing demands of ANPR/LPR image acquisition.

It is fully integrated with internal timing, intensity control, trigger input and long distance communications, including Ethernet and RS232. This makes the VTR series particularly suitable for applications such as ANPR (automatic number plate recognition), red light violation, open road tolling and weight-in motion systems.

Reasons to use the Gardasoft VTR traffic illumination

High power

The VTR feature up to 4.5 kW LED pulse drive power for high speed application and increased illumination distances.

Fast strobe capability

A fast repetition rate up to 10 kHz allows for capture of a sequence of images at high speed and at different exposure times to obtain the perfect take. The max. pulse length @ 100%power is 3 ms for VTR2, 2 ms for VTR4 and VTR6. Trigger frequency reaches up to 10 kHz for VTR2, 5 kHz for VTR4 and VTR6. The max. duty cycle @ 100% is 2% for all models except VTR2, white (1%).

Attractive built-in features

The lights already integrate features relevant for traffic monitoring applications, like internal timing, intensity control, trigger input and long distance communications for synchronisation with the camera.

Perfect protection

The VTR illuminations are housed in an IP66 rated enclosure for outdoor installation. Additional housing is therefore not required.


  • Colour: white, IR 850 nm
  • Lens: beam angle 12° or 28° for white and 14° and 28° for IR 850 nm
  • I/O: trigger input 5-24 V opto-isolated, trigger output
  • Interface: Ethernet or RS232
  • Power supply: 24 V, 3,2 A for VTR2, 5 A for VTR4 and 8 A for VTR6
  • Dimensions: 246 mm (w) 256 mm (h) 50 mm (d) for VTR2, 408 mm (w) 484 mm (h) 65 mm (d) for VTR4, 518 mm (w) 484 mm (h) 65 mm (d) for VTR6
  • Protection: IP66 with weatherproof cabling
  • Miscellaneous: dimmable 1-100%

Markets and Applications

The Gardasoft VTR strobe lights provide very powerful LED strobe illumination for traffic monitoring applications. This includes automatic number plate recognition, red light violation, open road tolling and vehicle type identification.