When are laser safety goggles mandatory?

Mandatory from Class 3B: looking directly into the beam without safety goggles risks eye injury. The goggles must be wavelength-specific – goggles for 532 nm do not protect against 405 nm. Strongly recommended from Class 3R: although the blink reflex usually still provides sufficient protection at Class 3R, in a professional environment goggles are standard. Not required for classes 1, 1M, 2, 2M – except for 1M/2M when magnifiers or binoculars are used for observation. Important: goggles must match the wavelength AND the optical density (OD) must match the laser power. We are happy to advise.