2 GENERAL SAFETY INFORMATION
© 2017 RAYLASE GmbH MINISCAN II
MN102-en / v1.0.3
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2.3
Classification of laser systems
The deflection unit can be installed on a range of different laser systems. Every laser system is assigned
to a laser class, which must be specified at the output location of the laser radiation (e.g. using a laser
warning sign).
The following laser classes are defined in DIN EN 60825-1 and described in DGUV Regulation 11:
Class
Description
1
The accessible laser radiation is not dangerous under reasonably foreseeable conditions.
1M
The accessible laser radiation is in the wavelength range 302.5 nm to 4,000 nm. The accessible laser
radiation is not dangerous to the eyes, provided the beam cross-section is not reduced by optical
instruments (e.g. magnifiers, lenses, telescopes).
2
The accessible laser radiation is in the visible spectral range (400 nm to 700 nm). Short exposure times
(up to 0.25 s) are not dangerous to the eyes. Additional beam components outside the wavelength
range 400 nm to 700 nm meet the conditions for Class 1.
2M
The accessible laser radiation is in the visible spectral range 400 nm to 700 nm. Short exposure times
(up to 0.25 s) are not dangerous to the eyes, provided the beam cross-section is not reduced by optical
instruments (e.g. magnifiers, lenses, telescopes). Additional beam components outside the wavelength
range 400 nm to 700 nm meet the conditions for Class 1M.
3R
The accessible laser radiation is in the wavelength range 302.5 nm to 10
6
nm and is dangerous to the
eyes. The power or energy is a maximum of five times the permitted Class 2 radiation limit in the
wavelength range 400 nm to 700 nm and five times the Class 1 limit for other wavelengths.
3B
The accessible laser radiation is dangerous to the eyes and frequently also to the skin.
4
The accessible laser radiation is very dangerous to the eyes and dangerous to the skin. Diffusely
scattered radiation can also be dangerous. The laser radiation can cause a risk of fire and explosion.
Note that the deflection unit changes the beam output location of the laser system. The new beam
output must be indicated by a laser warning sign on the deflection unit, stating the corresponding
classification.
The use of a deflection unit can change the laser system’s laser class. This can necessitate additional
protective measures.
