The new eyewear is able to completely block visible laser but lets you see the laser position using a novel advanced filter technology. Blocking is up to LB5 for 473nm and 532nm however the new product provides an excellent alignment function. The new glasses are suitable for Excimer, UV, harmonic Nd:YAG (266nm-355nm-532nm-1064nm), KTP, Ti:Sa, Diodes, Disc, Nd:YAG. Over 20% VLT. See picture 2 for technical specification.