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EN 207 is a European norm for laser safety … EN 207 is a European norm for laser safety eyewear (now superseded, together with the EN 208, by the ISO 19818:2021 standard ). Any laser eye protection sold within the European Community must be certified and labeled with the CE mark. According to this standard, laser safety glasses should not only absorb laser light of a given wavelength, but they should also be able to withstand a direct hit from the laser without breaking or melting, both the filter and the frame. In this respect, the European norm is more strict than the American norm (ANSI Z 136) that only regulates the required optical density. More precisely, the safety glasses should be able to withstand a continuous wave laser for 5 seconds, or 50 pulses for a pulsed laser (EN 207:2017). An EN 207 specification might read IR 315–532 LB6. Here, the letters IR indicate the laser working mode, in this case a pulsed mode. The range 315–532 indicates the wavelength range in nanometers. Finally, the scale number LB6 indicates a lower limit for the optical density, i.e. the transmittance within this wavelength range is less than 10−6.n this wavelength range is less than 10−6.
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| rdfs:comment |
EN 207 is a European norm for laser safety … EN 207 is a European norm for laser safety eyewear (now superseded, together with the EN 208, by the ISO 19818:2021 standard ). Any laser eye protection sold within the European Community must be certified and labeled with the CE mark. According to this standard, laser safety glasses should not only absorb laser light of a given wavelength, but they should also be able to withstand a direct hit from the laser without breaking or melting, both the filter and the frame. In this respect, the European norm is more strict than the American norm (ANSI Z 136) that only regulates the required optical density. More precisely, the safety glasses should be able to withstand a continuous wave laser for 5 seconds, or 50 pulses for a pulsed laser (EN 207:2017).0 pulses for a pulsed laser (EN 207:2017).
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EN 207
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