Laser Class

Class

Description

Application example

Class I

Power is less than 0.4mW, basically no harm to eyes

DVD player,Laser curvature measuring instrument for ophthalmology

Class II

Power is 0.4mW~1mW. Usually, lasers below 1mw can cause dizziness and thinking. If you close your eyes to protect it, you can usually eliminate the symptoms. Do not observe directly in the beam, and do not directly illuminate other people`s eyes with a laser less than 1mw. Avoid using telescope equipment to observe Class II lasers.

Laser scanner, Laser pointer

Class III A

Power is 1mW~5mW, avoid observing the laser with a telescope, which may increase the risk. Like Class II, do not observe directly in the beam, and do not use Class III A laser to directly illuminate the eyes of others.

Laser level meter

Class III B

Power is 5mW~500mW. It is dangerous to observe directly in the beam, and do not use Class III B laser to directly irradiate the eyes of others, as this will be even more dangerous.

Laser level meter,laser range finer

Class IV

Power is more than 500mW. Reflected or radiated light beams may cause eye or skin damage.

Laser welding machine,laser marking machine