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Technical Documentation and
User Instructions
Laser Mirror Scanner LMS-Q280i
5
Specifications
5.1 Technical data
Technical Data of the Scanning Mechanism
Scanning mechanism:
rotating polygon mirror
Number of mirror facets:
4
Scan angle range:
45° (60° at 90% meas. range)
Angular movement:
linear
Scan speed :
5 lines/s up to max.80 lines/s
1)
Minimum angle step width :
0.02°
Angle readout resolution:
0.0025°
1) Scanning rates selectable via LAN-TCP/IP or serial interface, max. 30 scans/sec. for 60°
scanning range
Technical Data of the Laser Range Measurement
Measurement principle:
Single-shot time-of-flight measurement
Measurement range
1)
850 m
1500 m
for natural targets, ρ ≥ 20%
for natural targets, ρ ≥ 80%
Maximum range :
2000 m
Minimum range:
30 m
Measurement accuracy
2)
typ.
±
20 mm
(1
σ
standard deviation)
Measurement resolution:
5 mm
Target detection modes:
First target, last target (up to 4 echoes)
or alternating
Laser pulse repetition rate
PRR
3)
24.000 Hz
:
Laser wavelength:
near infrared
Laser beam divergence
4)
0.5 mrad
:
Eye safety class according
to IEC60825-1:2001
5)
1) The following conditions are assumed:
•
target is larger than the foot print of laser beam
•
normal incident angle of laser beam
•
visibility 10 km
•
average ambient brightness
2) Standard deviation, plus distance depending error
≤
± 20ppm
3) Average measurement rate is 1/2 of PRR rate @ scan angle range 45°
4) 0.5 mrad corresponds to 5 cm beam width per 100m distance
5) The classification is based upon the assumption that the laser beam is continuously
scanned.
