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 needed optical density is premised on worst-case calculations in a given environment. Often times, lasers come with optical density required with laser safety equipment. Could you reach out to me directly via phone at 952-405-6947 or through email at info@lasersafetyindustries.com so we could talk through it.