Are laser cutting machines harmful to the body?

CNC laser cutting machines are harmful to the human body laserpecker 2 pro:

The work of laser cutting is actually harmful to human body laser cutter. Injuries are mainly concentrated on eyes and skin, and necessary protective measures should be taken to reduce similar injuries.

1. How far away the eye injury is from the laser cutter laserpecker 1.

Among the laser injuries, the eyes are the most serious. For lasers with wavelengths in visible light and near infrared light, the eye has low absorption rate and high transmittance to the refractive medium, and the refractive medium has strong focusing ability (that is, the ability to gather light). When high-intensity visible light or near-infrared light enters the eye, it can pass through the refractive medium of the human eye and accumulate on the retina. At this time, the laser energy density and power density on the retina increase to thousands or even tens of thousands of times, and a large amount of light energy is instantly concentrated on the retina, which raises the temperature of the photoreceptor layer. The rapid rise of retina even leads to the coagulation, degeneration and necrosis of photoreceptor cells. And lose its sensitivity. Protein coagulation and degeneration of photoreceptor cells caused by laser overheating are irreversible damage. Once damaged, it will lead to permanent blindness in the eyes.

The wavelength of the laser affects the eye with different consequences. Far infrared laser damage to the eye is primarily caused by the cornea. This is because the wavelength of the laser is almost entirely absorbed by the cornea, so the cornea is the most seriously damaged, causing mainly keratitis and conjunctivitis. Patients feel eye pain, foreign body-like irritation, photophobia, tearing, eye congestion, vision loss and so on. When far infrared light injury occurs, the injured eye should be covered to prevent infection and symptomatic treatment.

The damage of ultraviolet laser to eyes is mainly to cornea and lens. The ultraviolet laser in this band is almost completely absorbed by the lens of the eye, and the cornea is mainly absorbed in the middle and long distance, which will lead to the blurring of the lens and cornea.

2.Skin damage

The human skin is very sensitive to touch, pain and warmth due to its physiological structure, forming a complete protective layer. The skin consists of several layers of tissue, each with different cells. When lasers irradiate the skin, if their energy (power) is too high, it can cause skin damage. Of course, the damage can be repaired by tissue. Although functional decline, but does not affect the overall functional structure, the damage to the eye is much less. However, it must also be given high priority. The damage threshold of laser to skin is also very high, and the output energy of various lasers varies greatly. At present, high-power lasers have been widely used. The degree of laser damage to skin is related to the dose of laser, the wavelength of laser, the depth of skin, the moisture of tissue and the thickness of cuticle. The first three factors are the main ones.

harmful to the human body Skin damage

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