class iiib

Lasers in this class may cause damage if the beam enters the eye directly. This generally applies to lasers powered from 5500 mW. Lasers in this category can cause permanent eye damage with exposures of 1/100th of a second or less depending on the strength of the laser. A diffuse reflection is generally not hazardous but specular reflections can be just as dangerous as direct exposures. Protective eyewear is recommended when direct beam viewing of Class IIIb lasers may occur. Lasers at the high power end of this class may also present a fire hazard and can lightly burn skin.

Some examples of Class IIIb laser uses are spectrometry, stereolithography, and entertainment light shows. Direct viewing of the Class IIIb laser beam is hazardous to the eye and diffuse reflections of the beam can also be hazardous to the eye. Do not view the Class IIIb laser beam directly. Do not view a Class IIIb laser beam with telescopic devices; this amplifies the problem. Whenever occupying a laser controlled area, wear the proper eye protection. Refer to the University of Kentucky Laser Safety Manual for complete instructions on the safety requirements for Class IIIb laser use. These lasers MUST have a key switch to prevent unathorized use, a laser emission indicator, a 3 to 5 second time delay after power is applied to allow the operator to move away from the beam path and a mechanical shutter to turn the beam off during use.

Class IIIB Green Laser Pointer
http://www.beamq.com/class-iiib-green-laser-pointer-p-78.html

Class IIIb Green Laser Modules
http://www.armlaser.com/laser-modules-c-12.html

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