Laser eye protection products require direct hit testing and labelling of eye protectors with protection levels such as D 10600 L5 (where L5 reflects a power density of 100 MegaWatt/m2 as the damage threshold of the filter and frame during a 10 secon

Conform to DIN EN 207 Norm

Filter and frame have to fulfil the same requirements.
It is not acceptable to select glasses according to Optical Density alone.
The safety glasses must be able to withstand a direct hit from the laser for which they have been selected, for at least 10 seconds (CW) or 100 pulses (pulsed mode).