![]() ![]() If skin is exposed to a laser beam that's reflected off a marking target, the skin will burn and clothes may catch fire. To avoid eye and skin exposure to direct or scattered laser radiation, the laser beam emitted by the laser system must be terminated at the end of its useful path by a diffusely reflecting material of appropriate reflectivity and thermal properties (or by absorbers). This includes the marking target or a machine/machine part, and must be true for both normal operation and foreseeable fault conditions. Terminate the beam pathĬlass 4 systems must be installed in a way that reduces the possibility of unintentional laser radiation on any object. Post a warning sign at the entrance to the area in which the laser product is installed to ensure that workers and outsiders are informed of the danger. Setup a warning indication sign and a controlled area To prevent operation of the laser system by unauthorized users, the key should be managed by the Laser Safety Officer. ![]() Use the Remote Interlock (Emergency Stop) input terminalĬonnect the remote interlock terminals to emergency stop switches or the like to prevent laser radiation in an emergency. Take the following safety measures when using Class 4 laser products from KEYENCE. If viewed directly with optical instruments, Class IIIa laser radiation is classified as an acute viewing hazard.ĭirect Class IIIb laser radiation is considered an acute hazard to the skin and eyes.Ĭlass IV laser radiation is considered an acute hazard to the skin and eyes from both direct and scattered radiation. Viewing diffuse reflections may also be hazardous, and these systems often represent a fire hazard.Ĭlass I laser radiation is not considered hazardous.Ĭlass IIa laser radiation is not considered hazardous if viewed for any period of time less than or equal to 1x10 3 seconds, but is considered a chronic viewing hazard for any period of time greater than 1x10 3 seconds.Ĭlass II laser radiation is considered a chronic viewing hazard.Ĭlass IIIa laser radiation is, depending upon the irradiance, either an acute intrabeam viewing hazard or chronic viewing hazard. Intrabeam viewing of Class 4 lasers is hazardous, as is skin exposure. ![]() Viewing diffuse reflections is normally safe. Laser products that are hazardous when intrabeam ocular exposure occurs (including accidental short exposures). The chances of injury increase with the exposure direction, and direct ocular exposure is hazardous. Potentially hazardous laser products with a relatively low risk of injury. Eye injury may occur when using optical viewing instruments to view a Class 2M laser. Laser products that emit visible beams of light and are only safe for short exposures to the naked eye (unaided eye). Using optical instruments does not increase the risk of ocular injury from a Class 2 laser. These products are safe for momentary exposures but can be hazardous if you deliberately stare into the beam. Laser products that emit visible radiation from 400 nm to 700 nm. The wavelength region for Class 1M lasers is restricted from 302.5 nm to 4,000 nm. Eye injury may occur when viewing the beam while using optical viewing instruments. Laser products that are safe for long-term, direct intrabeam viewing by the naked eye (unaided eye). This includes long-term intrabeam viewing, even when exposure occurs while using optical viewing instruments such as eye loupes or binoculars. Title 21 "Radiological Health" of the CFR (Code of Federal Regulations) stipulates regulations on radiation (including lasers) as well as general rules.ĭownload Laser Product Classifications IEC 60825-1īased on the laser safety requirements specified in IEC60825-1 and FDA (CDRH) 21CFR Part 1040.10, KEYENCE laser markers are classified as Class 4/ Class IV Laser Products. For production, sale and distribution of laser products in the U.S., manufacturers must comply with the requirements of these regulations. ![]() The CDRH (Center for Device and Radiological Health), a division under the FDA, conducts administrative operations of radiological regulations. The FDA (Food and Drug Administration) is a branch of the HHS (Department of Health and Human Services). IEC established an international standard "IEC 60825-1" for laser products, which serves as a common safety standard for IEC member countries. The IEC (International Electrotechnical Commission) is an international organization that prepares and publishes standards for all electrical, electronic, and related technologies. ![]()
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