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The wave length of laser beams available is within the visible spectrum range (400nm-700nm).
Short-time exposure (less than 0.25s) does not damage the eyes. For other rays beyond the wave length
range of 400-700nm which meet Class 1 conditions, generally can protect the eyes by keeping away from
laser beams or closing eyes.
Laser beams available are harmful to the eyes and skin as well. It is very dangerous to look straight at
rays of a 3B laser. Exceeding the maximum allowable radiation value, rays from the 3B laser source may
cause damage to the skin.
Rays available are extremely harmful to the eyes and skin, and even diffused rays also cause damage.
And rays may cause a fire and explosion hazard.
For a class 4 laser device, safety measures must be taken: The most important is to fully protect the eyes.
Under normal circumstances, the power intensity of a Class 4 laser device is enough to burn the skin,
cause a fire and ionize the atmosphere when focusing. Therefore, a series of other security measures
should be taken.
The laser level is different under different machine operating modes. The operating modes of the laser cutting machine are
shown in Table 2-7.
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