For class 2 lasers, the accessible laser radiation is between 400 nm and 700 nm and thus in the visible spectral range. For short-term exposure of less than 0.25 seconds, class 2 lasers are not dangerous to the human eye. Class 2 lasers may therefore be operated without additional protective equipment - as long as it is ensured that the operator does not need to deliberately or repeatedly look into the beam for a period of more than 0.25 seconds in order to operate the laser.
Laser class 2 is the most underestimated laser class, because an interaction duration of more than 0.25 seconds can result in permanent (!) eye damage. The eyelid closure reflex and/or an aversion reaction are not (!) present in red light in 4 out of 5 subjects. Legally and correctly classified laser class 2 laser pointers are therefore not toys and assume responsible use.
- Laser pointers
- Laser spirit levels
- Light curtains