Laser safety

General information on laser safety

Safety information serves the purpose of occupational safety and accident prevention. It must be observed! Your cooperation is required to protect yourself and your work colleagues from any harm. Therefore please always work with care and attention and be aware that the dangers are not usually "obvious". In order to ensure safe operation, the operator must make sure that persons working on or with the equipment are informed about the possible dangers of laser radiation.



laser safety

About your laser

The safety information and operating instructions for the laser must always be kept at the place where the equipment is used. The work zone where the laser is installed must be marked in accordance with the legal regulations to rule our any accidental harm to third parties. No mirrors may be used in the beam path as dangerous reflections can be created. Switch the equipment off immediately in case of malfunctions.


Laser classes

Z-LASER manufactures its products in accordance with the international standards and declares the product laser classes according to EN 60825-1, IEC 825-1 and 21 CFR 1040. The laser class can be taken from the yellow or black/white/red (USA) warning sticker applied to all lasers or on its fixed dimming cap. This warning sticker may not be removed under any circumstances! Compliance with the safety measures resulting from the respective laser class is compulsory (see accident prevention regulations and norms).


Extract of the standard EN 60825-1
Accident prevention regulations from employer's mutual insurance association



Laser installations in classes 1M, 2, 2M and 3R

Precautionary measures are only necessary to prevent people constantly looking directly into the beam; brief (0.25 s) radiation in the wavelength range of 400 nm to 700 nm, as can happen by accidentally looking at the laser, is not viewed as dangerous for classes 2 and 2M. However, the laser beam should not be pointed at persons on purpose. The use of optical aids (e.g. binoculars) together with laser equipment in classes 1M, 2M and 3R can increase the danger to eyes.



Class 3B laser equipment

Lasers in laser class 3B are potentially dangerous if a direct or reflected beam meets the eye without protection (directly looking into the beam). The following precautionary measures should be taken to prevent direct eye-contact with the beam and uncontrolled reflections:

  • The laser should only be operated in a monitored area.
  • Accidental reflections should be prevented by taking care.
  • The laser beam should, where possible, end at a diffuse scattering material at the end of the determined beam path. The colour and reflection capacity of the material must allow beam adjustment and keep the risk of reflection as low as possible at the same time.

Conditions for safely viewing a diffuse laser reflection from a class 3B laser emitted in the visible area are as follows:

  • Minimum distance of 13 cm between the shield and cornea and a maximum observation time of 10 s.
  • Other viewing conditions require a comparison of the of the beam produced by diffuse reflection with the MZB value (maximum permitted radiation).

Comment: A laser safety officer should be appointed for class 3B lasers. The laser safety officer should be responsible for checking the precautionary measures according to EN 60825-1 and specify suitable checks that are to be introduced.


  • Goggles are required if there is the possibility of eye-contact with the direct or reflected beam or if a diffuse reflection can be viewed that does not fulfil the conditions specified in appendix C of the EN 60825-1 norm.
  • Access points to the laser monitoring zone should be identified with the laser warning sign.




The lasers are only designed for operation with the voltages [Volt] stated in the technical data. Compliance with this data is compulsory to prevent faults. Especially brief voltage peaks and other electrical network faults (e.g. caused by switching on large machines) can destroy the laser. The voltage input must be stabilised with suitable measures (primary protection/voltage stabiliser, e.g. the Z-LASER ZNF network filter) if it is uncertain whether these conditions can be maintained.


Operating temperatures

High operating temperatures (> 45°C or > 113°F) significantly reduce the service life.
You can find details on this on our product data sheets.


IP classes

Please do not operate the laser beyond the stated IP classes.

Example: IP65




Please read all of the details carefully and pay attention to accurate formulation. Let's take points "6: dust-proof, 5: water jet proof" for example - you should consider that oil and chemicals are not water! A water jet protected laser is not necessarily oil or chemical-proof!