Basic safety instructions
Chapter 1
Lenses for CO2 laser deflection units with linear translator
modules are made of zinc selenide. The rating plate indicates if
this applies to the present deflection unit (
page 13, Detailed
Description). In addition, these deflection units are provided
with the adjacent sign.
Also note
page 7, Special hazards caused by lenses made
1.4
Classification of laser devices
The deflection unit can be fitted on various laser devices. Every laser device is assigned to a
particular danger class, which must be specified at the point where laser radiation is emitted,
e.g. using a warning sign. The following classifications are defined in DIN EN 60825-1:
Class
Description
1
The accessible laser radiation is not dangerous under reasonable foreseeable conditions.
1M
The accessible laser radiation is in the wavelength range of 302.5 to 4,000nm. The accessi-
ble laser radiation is not dangerous to the eyes, as long as the cross-section is not reduced
by optical instruments (magnifying glasses, lenses, telescopes).
2
The accessible laser radiation is in the visible spectrum (400 to 700nm). Short-term exposure
(up to 0.25s) is not dangerous to the eyes. Additional radiation components outside the
wavelength range from 400-700 nm meet the requirements for class 1.
2M
The accessible laser radiation is in the visible spectrum from 400 to 700nm. Short-term expo-
sure (up to 0.25s) is not dangerous to the eyes, as long as the cross-section is not reduced
by optical instruments (magnifying glasses, lenses, telescopes). Additional radiation compo-
nents outside the wavelength range from 400-700nm meet the requirements for class 1M.
3R
The accessible laser radiation is in a wavelength range of 302.5 to 10,600nm and is danger-
ous to the eyes. The power or energy is a maximum of five times the limit for permissible
class 2 radiation in the wavelength range from 400 to 700nm.
3B
The accessible laser radiation is dangerous to the eyes and frequently to the skin.
4
The accessible laser radiation is extremely dangerous to the eyes and dangerous to the skin.
Even diffuse scattered radiation can be dangerous. The laser radiation can cause fires or a
risk of explosion.
Note:
Bear in mind that the deflection unit changes the position at which the beam is emitted
and the new beam output must be marked with a warning sign showing the appropriate classi-
fication.
Note:
The deflection unit can change the classification of the laser device, particularly if it is
fitted with a focusing lens. The laser device may require additional protective equipment as a
result.
MN065_v1.0.1
2-Axis Laser Beam Deflection Unit SS-II
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