Laser safety level standard
2023-09-01
The laser safety classification standard is based on the potential for laser radiation to cause biological damage and the potential consequences of such damage. Specifically:
Class I laser products have low output lasers (less than 0.4 mW) that are not dangerous under any conditions to the eyes or skin, and even when focused through optical systems do not exceed the MPE value.
Class II laser products are low-power visible lasers that pose a hazard only when observed within the beam, but do not pose a chronic observation hazard. This type of laser radiation is considered a laser that has a chronic observation hazard.
Class IIIa laser products are medium-low-power lasers (continuous wave 1-5 mW) that pose a hazard only when observed within the beam and are considered an acute observation hazard if directly observed with the naked eye.
Class IIIb laser products are standard-power lasers that may be harmful to the eyes and skin, especially when the laser beam directly hits the eyes or skin.
Class IV laser products are high-power lasers (continuous wave 500 mW, pulse wave 10 J/cm2 or maximum diffuse reflection) that are hazardous under any circumstances, whether directly or indirectly observed, and may cause fires or burn the skin.
The use and management of different laser product classes have different regulations and requirements to ensure safety.
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