Radiation of laser cutting machine for advertising words? The laser cutting machine for advertising words can cut various metals and make metal words. The advertising word laser cutting machine can be formed once, without secondary processing. The price of laser cutting machine for advertising words is higher than that of ordinary engraving machines.

Laser cutting advertising words

laser cutting 

Metal advertising word cutting

Radiation of laser cutting machine for advertising words? The laser of the laser cutting machine is a special energy source. This type of laser has radiation to a certain extent, and how much harm is this radiation? According to the different optical radiation of lasers, CDEH and IEC generally divide the hazard levels of lasers and laser products into four levels, and the basis for classification corresponds to the treatable radiation limit AEL, that is, AEL is the maximum radiation allowed for each level of lasers and laser products. AEL is related to wavelength and exposure time under radiation.

Radiation level of laser cutting machine for advertising words?

Level I: Under normal operation conditions, light radiation will not cause harm to people.

The second level: its radiation range is in the visible spectral region, and its AEL value is equivalent to the value when it is exposed to the radiation of the first level product for 0.25 seconds. This level of product needs to be attached with warning signs for safety testing.

Level 3: divided into two levels: 3a and 3b. Level 3a will not cause harm to the naked eyes for people with normal avoidance reaction to strong light, but it will cause harm to the eyes when observing with lens instruments. Class 3b products include radiation in the range of 200nm to 1000000nm, which may cause accidental injury if viewed directly with the naked eye. Its management and control should be stricter than the second level.

Level 4: AEL is above level 3, which will not only cause harm to human eyes when looking directly, but also cause external harm in other situations. It may not only harm eyes, but also skin, and even cause fire. Such products shall be strictly managed and controlled.

According to CDRH standard, for the optical fiber communication system using 1550nm laser and single-mode fiber, the output power of the first level product should be less than 8.5mW, and the fourth level should be more than 500mW. According to IEC standards, for the optical fiber communication system using 1550nm laser and single-mode fiber, the output power of the first level product should be below 10mW, less than 50mW is Level 3, and more than 500mW is Level 4.

After the introduction of fiber amplifier in optical communication system, as the output power of fiber amplifier is higher than that of general semiconductor lasers, as a kind of laser products, the radiation safety of its use has also attracted everyone's attention. The International Telecommunication Union (ITU-T) has also taken into account the safe use of lasers when formulating standards for optical communication systems, especially systems using optical fiber amplifiers (such as wavelength division multiplexing). In some recommendations, such as G.691, G.692, G.664, G.957, relevant definitions and descriptions of IEC825 have been introduced.

The laser cutting machine is different from other common light sources. The laser generated by the laser can achieve the effect of energy concentration due to its monochromaticity, coherence, collimation and high energy density, thus causing harm to human organs (especially human eyes). For the laser in the infrared spectrum area, its harm to the human body is mainly thermal effect, and for the laser in the blue and purple spectrum area, its harm is mainly photochemical effect. Therefore, when the human eye is directly facing the laser emitted from the laser or fiber connector due to carelessness, it may cause injury to the eyes. If it is ultraviolet laser, it may cause corneal inflammation and cataract. For the 1550nm laser currently used, the light source of the laser marking machine is in the far infrared band, which mainly causes damage to the cornea and eyeball lens.

How to prevent the radiation hazard of the advertising word laser cutting machine?

1. Necessary laser cutting machine protective equipment.

The typical protective equipment of laser cutting machine is laser protective glasses. Because the protective glasses that prevent laser from damaging human eyes can be divided into reflective, absorption, diffraction and composite types according to the protection principle. Of course, they will filter and protect according to the laser radiation wavelength of the laser cutting machine to protect the laser of the laser cutting machine for human body, This is also a relatively safe and convenient protective equipment for laser cutting machines on the market.

2. Self protection against laser cutting machine radiation.

If the human body has enough health, it can resist the slight radiation of the laser cutting machine. Therefore, the operator of the laser cutting machine should pay attention to eating more carrots, bean sprouts, tomatoes, lean meat, animal liver and other foods rich in vitamin A, C and protein as appropriate, and often drinking green tea and so on. Because these foods can help people better protect their eyes, so that the human body can better protect the human body under the conditions of laser cutting machine radiation.

3. Avoid yourself.

This requires the operators and other personnel of the laser cutting machine to pay attention. If they can avoid the laser cutting machine, they should try to avoid it.