Leica Viva TS16, User Manual

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008598_001
a
a Laser beam
1.6.3 Distancer, Measurements without Reflectors
The EDM module built into the product produces a visible laser beam which
emerges from the telescope objective.
The laser product described in this section is classified as laser class 3R in
accordance with:
•
IEC 60825-1 (2014-05): “Safety of laser products”
Direct intrabeam viewing may be hazardous (low eye hazard level), in particu-
lar for deliberate ocular exposure. The beam may cause dazzle, flash-blindness
and after-images, particularly under low ambient light conditions. The risk of
injury for laser class 3R products is limited because of:
a
)
unintentional exposure would rarely reflect worst case conditions of (e.g.)
beam alignment with the pupil, worst case accommodation,
b
)
inherent safety margin in the maximum permissible exposure to laser radi-
ation (MPE)
c
)
natural aversion behaviour for exposure to bright light for the case of
visible radiation.
Description Value
R30
R500
R1000
Wavelength 658 nm
Maximum average radiant power 4.8 mW
Pulse duration 800 ps
Pulse repetition frequency (PRF) 100 MHz
Beam divergence 0.2 mrad x 0.3 mrad
NOHD (Nominal Ocular Hazard Distance) @ 0.25 s 44 m / 144 ft
General
16 Safety Directions