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A number rating how dangerous a laser is to the eye.
Also known as: Laser hazard class, Class 2 laser
Laser class runs from 1 to 4, rating the hazard to eyes and skin. A class 2 laser is safe only because the blink reflex limits exposure, which means it is not safe if the reflex is suppressed or the beam is viewed through optics.
Rates a laser product's hazard to eyes and skin on a scale from class 1 to class 4.
Contexts: Laboratory, Electrical equipment
Relies on the blink reflex for the safety of class 2 devices, so the classification assumes an unaided eye and a natural aversion response.
Contexts: Laboratory, Electrical equipment
Requires controlled areas and interlocks at class 4, where the beam is hazardous by diffuse reflection as well as directly.
Contexts: Laboratory, Electrical equipment
A printed label carrying a numeral and a triangular warning sign showing a starburst of straight rays.