VQ-250 2D Laser Scanner

The V-Line® "Full Circle" laser scanner RIEGL VQ-250 is a very high speed, non-contact profile measuring system using a narrow infrared laser beam and a fast line scanning mechanism, enabling full 360 degree beam deflection without any gaps.


High-performance pulsed laser ranging, based on RIEGL's well-proven echo signal digitization technology with subsequent online waveform processing results in superior measurement capabilities even under adverse atmospheric conditions and in excellent multiple target echo discrimination.

The RIEGL VQ-250 is a compact and lightweight scanner, mountable in any orientation and even under limited space conditions on land based vehicles, tunnel measuring devices, watercrafts, etc. The Instrument needs only one power supply and provides line scan data via the integrated LAN-TCP/IP interface. The binary data stream can easily be decoded by user-designed software making use of the available software library RiVLib

Laser Product Classification Class 1 Laser Product according to IEC60825-1 :2007
The following clause applies for Instruments delivered into the United States;
Compiles with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007.
Power Supply Input Voltage 18 to 32 VDC
Power Consumption1 Typ. 65 W (max. 170 W)
Main Dimensions (L x W x H) 376 x 192 x 218 mm
Temperature Range -10ºC to +40ºC (Operation)
-20ºC to +50ºC (Storage)
Protection Class IP64, dust and splash-proof
Weight Approx. 11 kg (without protective cap)
Humidity Max. 80% non condensing @ +31ºC

1 At the maximum scanning rate of 100 scans/sec and ambient temperature <+10 ºC

  • Mobile Mapping
  • Tunnel Profile Measurement
  • High-accuracy ranging based on echo digitization and online waveform processing
  • High laser repetition rate - fast data acquisition
  • Multiple target capability - unlimited number of targets
  • Perfectly linear scan lines
  • Compact, rugged and lightweight design
  • Electrical interfaces for GPS data string and Sync Pulse (1PPS)
  • Mechanical interface for IMU mounting
  • Integrated LAN-TCP/IP interface
Measuring Principle
  • Time-of-flight measurement
    Echo signal digitization
    Online waveform processing
Max. Unambiguous Measuring Range1
Effective Measurement Rate Natural Targets ρ ≥ 10% Natural Targets ρ ≥ 80%
50 kHz 180 m 500 m
100 kHz 130 m 380 m
150 kHz 110 m 340 m
200 kHz 100 m 300 m
300 kHz 75 m 200 m
Max. Number of Targets per Pulse Practically Unlimited
Minimum Range 1.5 m
Accuracy2 10mm
Precision3 5mm
Laser Pulse Repetition Rate PRR4 up to 300 kHz
Max. Effective Measurement Rate5 up to 300000 measurements/sec (@ 300 kHz PRR & 360º FOV)
Echo Signal Intensity For each echo signal, high-resolution 16 bit intensity information is provided

Laser Wavelength Near Infrared
Beam Divergence 0.3 mrad
Laser Beam Foot print (Gaussian Beam Definition) 17 mm @ 50 m
31 mm @ 100 m
7 mm @ exit aperture

1 Rounded values - The following conditions are assumed: target larger than the footprint of the laser beam, perpendicular angle of incidence, visibility 23 km, average ambient brightness.
2 Accuracy is the degree of conformity of a measured quantity to its actual (true) value. One sigma @ 150 m range under RIEGL test conditions.
3 Precision, also called reproducibility or repeatability, is the degree to which further measurements show the same result. One sigma @ 150 m range under RIEGL test conditions.
4 Rounded values - User selectable.
5 Rounded values

Scanning Mechanism Rotating Mirror
Field of View (Selectable) up to 360º "full circle", without gaps
Scan Speed (Selectable) up to 100 scans/sec
Angular Stepwidth Δ ϑ (Selectable) Between Consecutive Laser Shots 0.018º ≤ Δ ϑ <072º
Angle Measurement Resolution 0.001º
Internal Sync Timer Real-time synchronized time stamping of scan data
Scan Sync (Optional) Scanner Rotation Synchronization
Configuration LAN 10/100/1000 Mbit/sec
Scan Data Output LAN 10/100/1000 Mbit/sec
GPS-System Serial RS232 interface for data string with GPS-time information.
TTL input for 1PPS synchronization pulse

In Germany and in the U.S.A. only, use of the VQ-250 for other applications than Mobile Mapping and Tunnel Profile Measurement is not permitted.