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Class Ⅰ Less than 0.4 microwatts, No safety requirements are needed to use class
Ⅰ.
ClassⅡ：The power of his class laser range from 0.4mw to1.0mw. The responsibility
of human's eyes is to the strength light 0.25s. In 0.25s, human's eyes can't be
exposed to strong light over the quantity of MPE.
ClassⅢ：Concorning for safe, we classify class3 into class3a and clss3b，This
class of laser will do harm to our eyes directly.
ClassⅢa：power of light stream: 1~5mw，the power of light stream can not be over
25w/m-m. This class of laser will do harm to retina when directly shoot at our
eyes!
ClassⅢb：output power :5~500mw.This class of laser will do harm to our body
according to the power.
ClassⅣ：The power is more than 500mw，visible or invisible. This class of laser
will not only do great harm to human body, but also cause fire or other
accidents. It's advisable to control the using of this class of laser. the user
should be permitted professional.
The manufacturer is required to label Class II, III and IV lasers with a warning
label which will also have the laser's classification printed on it. |
