What is the laser hazard classification?

The laser has a broad power, need classification and specific safety procedures.Although the cold laser is usually used for non - invasive medical procedures constitute the minimum harm to the human body, the other lasers in the more powerful the scope of the current radiation and the danger of burns.Therefore, laser hazard classification system has been established.Based on the frequency of beam, laser hazard classification of service to ensure that when the need to take special care.To power and range, laser hazard classification?
Laser and their system by calling for a federal law that manufacturers have a classification.If it is a modification of a new task, it will need a new classification.Laser were assigned to 4 classes of 1, according to the possible biological damage.
Class I
Laser in this classification can not emit laser radiation in a dangerous level known.User class I laser usually exempt from radiation hazard control in the operation and maintenance.These lasers including your typical laser pointer or laser cat toys.
Class IA
This includes a special name for a 1000 second exposure based on.These are not in order to see if the supermarket laser scanner.For a class of IA emission is defined as a discharge is not more than the class I limits for a period of 1000 seconds.They did not cause harm, provide a contact beam is less than 1000 seconds.
Level two
These low power, visible laser issued the class I level, but not a radiation power is higher than 1 mW.It is assumed that the aversive response of human nature of light will protect a person.Therefore, the classification of specific control.
Class IIIA
This includes the intermediate drive those only regarded as a dangerous intrabeam watch.Limited control is applied to the classification.
Kind of hope
These include those with moderate power, without fire hidden trouble, but still be able to produce a dangerous diffusion reaction.Classification of the specific control requirements for their use.
Level Four
These are high power and harmful view under any condition.They also have the potential danger of fire, will damage the skin.This classification requires specific control their use.