The sphere of application of green laser pointer

The sphere of application of green laser pointer
Class III: the output laser beam directly into the eye if would have hurt, for some security reasons, further divided into IIIA and IIIB level.
Class IIIA laser for the visible light of continuous output of 1-5mW laser beam, the beam energy density of no more than 25W/m-m, avoid using afar observed IIIA laser devices, this may increase the risk. Typical applications IIIA and Class II level have a lot in common, such as laser pointer, laser scanners.
III B class of 5-500mW of continuous laser beam to observe directly in danger. green laser pointer has been divided into several varieties.But minimum irradiation distance of 13cm, the maximum exposure time of ten seconds the following for safety. IIIB typical applications such as laser spectroscopy and entertainment lighting show.
    ClassIV: high-output continuous-wave (greater than 500mW), higher than the third level, there is a fire hazard, diffuse reflection also at risk. Typical applications such as surgery, research, cutting, welding and micro-mechanical processing.
According to different wavelength, green laser pointer has been divided into several varieties.Although the laser safety levels have been defined, but for the human body, especially the human eye, the damage is different at different wavelengths, and therefore, although two or three of the laser, the same should be noted.
Different wavelengths of laser eye injury site
Wavelength Division Wavelength (nm) primary site of injury
180-400 UV laser cornea, lens
Visible laser 400-700 retina, choroid
700-1400 near-infrared laser retina, choroid, lens
, The far-infrared laser corneal 1400-106
Long-term operating environment in Laser eye workers are long-term effects. In operation and use of lasers, even if not directly by the laser irradiation, resulting in injury accidents. Different  laser wavelength of green laser pointer has different harm to people.However, the anti-out laser rays through walls or other objects produced by micro-reflections, long-term work in this environment of people, a high incidence of cataracts.
Prolonged exposure to green laser light, especially when the laser pointer over 5 mW of power, just a few seconds may cause functional vision of the human eye damage.
Before the eyes of my colleagues once smashed by the laser. The results gave the company lost a little money. The key is self-inflicted injury, loss is difficult to estimate. Especially for industrial processing lasers are now engaged in those who are even more so. The damage degree of green laser pointer depends on the power of it.The safety level of laser processing are generally four (most dangerous), and now there are many applications of laser is not visible in the scope, the more light that is not visible, the more dangerous. Can see the laser, most people know not to look directly at, but not visible only rule of thumb to determine where there is no light, should not be read.