Leica Geosystems iCON iCB50, Руководство пользователя, Страница: 14 / 72

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 vis-
ible radiation.
Description Value
(R80)
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 × 0.3 mrad
NOHD (Nominal Ocular Hazard Distance) @ 0.25 s 44 m / 144 ft
CAUTION
Class 3R laser products
From a safety perspective, class 3R laser products should be treated as poten-
tially hazardous.
Precautions:
▶ Prevent direct eye exposure to the beam.
▶ Do not direct the beam at other people.
CAUTION
Reflected beams aimed at reflecting surfaces
Potential hazards are not only related to direct beams but also to reflected
beams aimed at reflecting surfaces such as prisms, windows, mirrors, metallic
surfaces, etc.
Precautions:
▶
Do not aim at areas that are essentially reflective, such as a mirror, or
which could emit unwanted reflections.
▶ Do not look through or beside the optical sight at prisms or reflecting
objects when the laser is switched on, in laser pointer or distance meas-
urement mode. Aiming at prisms is only permitted when looking through
the telescope.
14 Safety Directions