LASER SAFETY
106
AREX™ 400
LASER RADIATION
Laser radiation is form of electromagnetic emission in the wavelength range from the
ultraviolet (e.g. from excimer lasers), through visible (e.g. HeNe or Argon lasers) and
near infrared (e.g. Yb Doped Fiber and ND:YAG DPSS lasers) up to long infrared (e.g. CO2
lasers). It should be considered as non-ionizing Radiation.
In the Arex™ 400 laser marker, the laser radiation emission, at near 1 micron wave-
length range, is obtained thought a diode optical pumping of an Yb doped rare earth
doped pulsed fiber laser. Depending on the model, the laser is a standard Q-switch or
Fiber MOPA fiber laser system installed at the control rack. The laser optical radiation is
delivered to the scan head through an armored fiber cable (inside the Head cable), and
an isolated beam delivery optical system (IBDO). The laser beam exiting the IBDO is a
collimated laser beam that is then processed inside the Scan Head through an optical
scan system and F-Theta scan lens to scan and focus the laser beam at the marking
plane.
The radiation of the Arex™ 400 laser marker is therefore invisible to human eye and
thus not blocked by the natural pupil reflex and can result is severe damage to human
eye and skin.
Arex™ 400 laser markers are classified Class 4 according to applicable norms. This
means that the laser radiation level emitted by these laser markers is dangerous even
when not directly exposed to the laser beam. Partial reflected laser beam or scattered
laser radiation surfaces can cause damage to human eye and skin. It is therefore manda-
tory that customer apply all applicable regulatory safety protection measures when
integrating these laser markers into their machines including, but not limiting, to indi-
vidual operator protection devices such as protective eye goggles, etc.
In addition to possible injuries to human eye and skin, these lasers can ignite flammable
materials and cause fires even at long distances.
WARNING
Directly viewing a laser beam can cause irreversible damage to human
eye.
WARNING
Viewing of a reflected laser beam can cause irreversible damage to human
eye. The use of accessory external optics may increase the risk of damage.
WARNING
This laser marker is classified as Class 4. Class 4 Lasers can cause dam-
age, not only from direct or reflected laser radiation, but also from scat-
tered radiation. These lasers cause significant risk of irreversible damage
to human eye and skin as well as risk of ignition and fire of flammable
materials, even at long distances form laser radiation output aperture.
WARNING
Make sure that no flammable objects/materials are within the laser beam
path. Use only non-flammable materials for enclosures or any other
machine surfaces that may be exposed to direct or indirect laser beam
radiation.
