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LMS-Z420i

DETAILED INFORMATION
 

MAIN APPLICATIONS

  • Topography & Mining
  • Architecture & Facade Measurement
  • As-Built Surveying
  • Archaeology & Cultural Heritage Documentation
  • Monitoring & Civil Engineering
  • City Modeling

General    to top

The terrestrial laser scanner system RIEGL LMS-Z420i consists of a high performance long-range 3D laser scanner, associated operating and processing software RiSCAN PRO, and a calibrated and definitely orientated high-resolution digital camera. 


The system provides data which lend itself to automatic or semi-automatic processing of scan data and image data to generate products such as textured triangulated surfaces or orthophotos with depth information.


The RIEGL LMS-Z420i is a rugged and fully portable sensor especially designed for the rapid acquisition of high-quality three dimensional images even under high demanding environmental conditions, providing a unique and unrivalled combination of wide field-of-view, high maximum range, and fast data acquisition.


A standard Windows notebook and the bundled software package RiSCAN PRO enable the user to instantly acquire high-quality 3D data in the field and provide a variety of registration, post processing and export functions. 

 

Principle of Operation   to top

principle of scanner operation

The range finder electronics (1) of the 3D scanner RIEGL LMS-Z420i is optimized in order to meet the requirements of high speed scanning (fast laser repetition rate, fast signal processing, and high speed data interface).

The vertical deflection ("line scan") of the laser beam (2) is realized by a polygon (3) with a number of reflective surfaces. For high scanning rates and/or a vertical scan angle q up to 80°, the polygonal mirror rotates continuously at adjustable speed. For slow scanning rates and/or small scanning angles, it is oscillating linearly up and down. The horizontal scan ("frame scan") is provided by rotating the complete optical head (4) up to 360°.

Scandata: RANGE, ANGLE, SIGNAL AMPLITUDE, and optional TIMESTAMP are transmitted to a laptop (6) via TCP/IP Ethernet Interface (5). Camera (7) data are fed into the same laptop via USB/firewire interface (8).

The RiSCAN PRO software (9) allows the operator to perform a large number of tasks including sensor configuration, data acquisition, data visualization, data manipulation, and data archiving. RiSCAN PRO runs on platforms WINDOWS XP and 2000 SP2.

 

Technical Data for LMS-Z420i  to top

Rangefinder Performance1)

 

 
Eye safety class according to
IEC60825-1:1993+A1:1997+A2:2001
The following clause applies for instruments delivered into the United States:
Complies with 21 CFR 1040.10 and 1040.11
except for deviations pursuant to
Laser Notice No. 50, dated July 26, 2001.

Laser Class 1
Measurement range 2)   
for natural targets, r ³ 80%
for natural targets, r ³ 10%

up to 1000 m
up to 350 m
Minimum range 2 m
Accuracy 3) 10 mm 
Repeatability 3) 8 mm (single shot), 4 mm (averaged)
Measurement rate up to 11000 pts/sec @ low scanning rate (oscillating mirror)
up to   8000 pts/sec @ high scanning rate (rotating mirror)
Laser wavelength near infrared
Beam divergence 4) 0.25 mrad

Scanner Performance:
Vertical (line) scan
Scanning range  0° to 80°
Scanning mechanism rotating / oscillating mirror
Scanning rate 1 scan / sec to 20 scans / sec @ 80° scanning range
Minimum angle stepwidth Delta Deta  5)
between consecutive laser shots		 0.004°  0.2°
Angular resolution 0.002°

Horizontal (frame) scan
Scanning range 0° to 360°
Scanning mechanism rotating optical head
Scanning rate 6) 0.01° / sec to 15° / sec
Angle stepwidth  Delta Phi 5)
between consecutive scan lines		 0.004°  0.75°
Angular resolution 0.0025°
Inclination Sensors optional, for vertical scanner setup position
Internal Sync Timer  Option for GPS-synchronized time stamping of scan data

General technical data:

Interface:
for configuration & data output
for configuration
for data output


Ethernet TCP/IP, 10/100 MBit/sec
RS232, 19.2 kBd 
ECP standard (enhanced capability port), parallel
Power supply input voltage
 12 - 28 V DC
Power consumption
 typ. 78 W max 94 W
Current consumption:
          @ 12 V DC
          @ 24 V DC
typ. 6.5 A max 7.8 A
typ. 3.25 A max 3.9 A
Main dimensions  463 x 210 mm (Length x Diameter)
Weight 16 kg
Temperature range 0° C to +40°C (operation), -10°C to +50°C (storage)
Protection class IP64, dust and splash-water proof
1) First, Last, or alternating target mode selectable from scan line to scan line.
2) Typical values for average conditions. Maximum range is specified for flat targets with size in excess of the laser beam diameter and near to normal incidence of the laser beam. In bright sunlight, the operational range is considerably shorter than under an overcast sky.
3) One sigma @ 50 m range under RIEGL test conditions.
4) 0.25 mrad correspond to 25 mm increase of beamwidth per 100 m of range.
5) Selectable via Ethernet Interface or RS232.
6) Horizontal scan can be disabled, providing 2D-scanner operation.

  Data sheet, LMS-Z420i, 23/02/2007

Information contained herein is believed to be accurate and reliable. However, no responsibility is assumed by RIEGL for its use. Technical data are subject to change without notice.

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Last updated 28/02/2007