Always consult your on-site Laser Safety Officer (LSO) for specific guidance. Required optical density (OD) and laser safety personal protective equipment (PPE) are determined based on worst-case scenarios and require professional judgment. All laser safety equipment provided is intended for diffused beam viewing only.
The 408 window will give you an OD of 5+ @ 190-420nm. Please see here: https://lasersafetyindustries.com/col...
If you'd like to discuss further about your application, please feel free to give us a call at 952-405-6947 or through email at info@lasersafetyindustries.com. It is always best to chat about your specific use case to be sure this is what you need.