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12. Instructions for safe use
The LW20 is a laser based altimeter that emits ionizing laser radiation. The level of the laser emission is Class 1M which indicates
that the laser beam is safe to look at with the unaided eye but must not be viewed using binoculars or other optical devices at a
distance of less than 0.5 meters. Notwithstanding the safety rating, avoid looking into the beam and switch the unit off when
working in the area.
CAUTION: The use of optical instruments with this product will increase eye hazard.
The LW20 should not be disassembled or modified in any way. The laser eye safety rating depends on the mechanical integrity of the
optics and electronics so if these are damaged do not continue using the LW20. There are no user serviceable parts and maintenance
or repair must only be carried out by the manufacturer or a qualified service agent.
No regular maintenance is required for the LW20 but if the lenses start to collect dust then they may be wiped with suitable lens
cleaning materials. Make sure that the LW20 is switched OFF before looking into the lenses.
Specification
Eye safety classification
Laser wavelength
Pulse width
Pulse frequency
Peak energy
Average power
NOHD
Appendix A :: Dimension drawings
LW20
LW20 / SF20 LiDAR - Product manual - Revision 2
Figure 28 :: Laser radiation information and labels
Value / AEL
Class 1M
905 nm
15 ns
10 kHz
160 nJ
< 1.2 mW
0.5 m
Figure 29 :: Dimension drawings of the LW20 and SF20
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© LightWare Optoelectronics (Pty) Ltd, 2017
LW20 / SF20 LiDAR sensor
Notes
7 millimeter aperture
Distance beyond which binoculars with may be used safely
SF20
29.9
Product manual
32.1
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www.lightware.co.za
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