The use of laser marking machines is becoming more and more extensive now, and many companies are also using laser marking machines, which greatly improves work efficiency. But the laser marking machine also has certain hazards. So what is the harm of laser marking machine to human body? A brief introduction will be given below
The harm of laser marking machine to human body
Let’s talk about the harm that laser marking machine has to the human body.
In the laser damage, the damage to the eyes in the body is the most serious. For lasers with wavelengths between visible light and near-infrared light, the absorptivity of the refractive medium of the eye is reduced, and the transmittance is high, while the focusing ability (ie, focusing power) of the refractive medium is strong. When high-intensity visible or near-infrared light enters the eye, it can pass through the refractive medium of the human eye and accumulate the light on the reflection. At this time, the repeated laser energy density and power density are increased to thousands or even tens of thousands of times, and a large amount of light energy is concentrated on the retina in an instant, causing the temperature of the photoreceptor cell layer of the retina to rise rapidly, and even the photoreceptor cell aggregation, degeneration and necrosis And lose the role of photosensitive. When the laser is focused on the photoreceptor cells, too much is produced, and the wavelength of the laser caused by the different wavelengths has different effects on the eyeball, and the consequences are also different. The damage of far-infrared laser to the eyes is mainly the cornea. This is because the laser of this wavelength is almost completely absorbed by the cornea, so the corneal damage is serious, mainly causing keratitis and conjunctivitis. The patient feels eye pain and foreign body-like irritation. Light, tearing, eye congestion, decreased vision, etc. The main damage to the eye caused by ultraviolet laser is the cornea and lens. The adjacent ultraviolet laser is almost completely absorbed by the eye lens, while COSCO is mainly absorbed by the cornea, which can cause opacity of the lens and cornea.
Laser damage to the skin:
Human skin has a very sensitive function of touch, pain and warmth due to its physiological structure, forming a complete protective layer. Moreover, the skin is composed of multiple layers of tissues, with different cells in each layer. If the energy (power) is too large, it can cause skin damage. Of course, the damage can be repaired by the tissue. Although the function is reduced, it does not affect the overall functional structure, and the damage to the eyes is much lighter. But there must also be a relationship between the degree of damage of the laser to the skin, the dose of the laser, the wavelength of the laser, and the darkness of the skin. The threshold of laser damage to the skin is also very high, and various output energies vary greatly, and the range of high-power lasers currently in use is very wide. , Tissue moisture and skin thickness of the stratum corneum are related to various factors, the previous three factors are the main ones.
How to prevent the laser marking machine from harming the body
When working with a laser marking machine, you must wear a fine dust mask and goggles, otherwise the fine dust formed by the evaporation of the laser on metal, stone and other materials will pollute your lungs and cause damage, and the bright laser will also cause damage to the retina. Injury, these fine dust re-enter the lungs, the body is unable to expel them, and continuously will cause lung fibrosis. We should have a clear understanding of this: long-term exposure to occupational dust (dust below 5um can enter the alveoli; dust below 0.5um, due to its low gravity, is not easy to settle, and is discharged with exhalation, so the retention rate decreases;
The harm of laser marking machine to human body
Is the laser marking machine harmful to the human body?
The so-called electromagnetic radiation is the propagation of alternating electromagnetic fields in space. There is radiation regardless of the frequency of electromagnetic waves. For example, the frequency of electricity used in residential homes is 50 Hz, which is a low frequency. It goes up to radio long wave, medium wave, short wave, ultrashort wave, and then microwave and infrared light in microwave ovens. However, the frequency of these electromagnetic waves is not as high as that of visible light in nature. Radiation has little effect on the human body. Even high-frequency electromagnetic waves such as ultraviolet rays are both beneficial and harmful to the human body. The key lies in scientific use. For example, long-term excessive exposure to ultraviolet rays is likely to induce skin cancer, but moderate exposure has certain benefits, as is the application of X-rays in medical treatment.
Through the above introduction, we have learned about the harm of laser marking machine to human body. We have to let the laser marking machine be used by us, and don’t let it hurt us, in order to achieve idealization.
