With the rapid development and wide application of laser marker technology, a variety of laser marker products can be found everywhere in our living and working environments. Some laser marker products can be used safely, but some can cause damage to our eyes and skin if they are not used properly. In this article we will introduce you to laser marker technology, laser marker safety classification, laser marker hazards and effective protective measures.
This chart shows the colors of the visible spectrum and the wavelengths (in nanometers) at which they fit. The wavelengths and colors are as follows:
The International Electrotechnical Commission standard (IEC 60825-1) categorizes laser marker products into the following seven laser marker safety classes based on the wavelength of the laser marker product and the maximum output laser marker power: 1, 1M, 2, 2M, 3R, 3B, and 4.
See the table below for information, each row corresponds to a different class of laser, detailing the associated warnings and recommended personal protective equipment where applicable.
There are two types of laser hazards: beam hazards and non-beam hazards.
1. Eye damage: laser damage to the vision of the laser products is the biggest potential hazard!
The cornea, lens and retina of the human eye and other tissues are easy to be burned by the laser part. Severe exposure to lasers may cause damage to the cornea or retina, and the extent and location of the damage depends on the wavelength of the laser and the nature of energy absorption in different parts of the human eye. Despite the definition of laser safety levels, the damage to the human body, especially the human eye, varies from wavelength to wavelength, so the same care should be taken even though it is a class 2 or 3 laser. When exposed to green lasers for long periods of time, especially when the power of the laser pointer exceeds 5 milliwatts, it takes only a few seconds to cause functional damage to the vision of the human eye.
Different wavelengths of lasers correspond to different areas of eye damage:
2. Skin damage
large energy laser irradiation of the skin will cause burns to the skin. The degree of damage to the skin depends on factors such as the wavelength of the laser, the irradiation time and the degree of skin pigmentation. Some specific ultraviolet wavelength lasers can cause skin cancer.
1. Personnel management
(1) Laser users should undergo relevant training and conduct experiments in strict accordance with operating procedures.
(2) Clearly designate the personnel who have the right to enter or leave the room where the laser is installed, and non-relevant personnel shall not enter.
(3) In the laser debugging and operation process operators shall wear protective glasses and other protective equipment, before laser experiments, remove all reflective items on the body (watches, finger rings, jewelry, jewelry), to avoid accidental refraction of the laser beam causing injury.
(1) Flammable fabrics and plastics, as well as flammable and explosive gases or liquids should not be placed around the laser optical path.
(2) Do not place objects with specular reflection around the laser system, and affix eye-catching warning safety markings in the laser workplace.
(1) Do not look directly at the laser beam.
(2) If the laser system is on, be sure not to look directly into the laser exit hole.
(3) Do not look directly into the laser beam or refracted light during operation, and avoid direct body exposure to the laser beam.
(4) It is prohibited to check for laser malfunctions with your eyes, and the laser must be checked with the power off.
If you take the proper precautions and use your laser equipment safely, you will not be harmed by lasers, and Monport will continue to update all laser users on laser safety. For more information, please visit monportlaser.com.
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