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Laser Power visible red and green laser safety glasses for alignment lasers

When working out the most appropriate laser safety glasses to use with green and red visible alignment lasers, a precise calculation of OD (Optical Density) is required to provide a balance between protection and visibility.

For example if you have a 635 nm red laser with 10mW power then an OD of 1.5 will cut the laser down by around 30 time taking it to the equivalent of a 0.3mW laser which is eye safe.  While 0.3mW will be visible in normal indoor lighting conditions if there is sunlight this may not be enough power so a lower optical density maybe required.

The LG-006 and the LG-007 shown below provide protection against visible alignment lasers.  Feel free to contact one of our laser safety experts on 1300 411 337 or email us at for assistance.