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What do the laser classes 1M and 2M mean?

Classes 1M and 2M according to EN 60825-1 stand for „Magnifying Optics“ – lasers that are safe under normal conditions but whose radiation can become hazardous when viewed through optical aids such as magnifiers, binoculars or microscopes. With DOE positioning lasers the optical power is spread across the pattern – but if a lens were to refocus the radiation, the power density could reach hazardous levels. Practical consequence: safe for normal industrial use without safety goggles. Prohibited: viewing the beam through magnifiers, binoculars or microscopes.