What does NOHD stand for in the context of laser safety?

The term NOHD stands for Nominal Ocular Hazard Distance. In the context of laser safety, it refers to the distance within which the irradiance or power density of a laser beam exceeds the acceptable exposure limits for the human eye. This distance is critical for ensuring safety when working with lasers, as it defines the region where a person might be at risk of eye injury if exposed to the beam.

Understanding NOHD is essential for establishing safety zones and guidelines for laser usage and for designing proper safety protocols for personnel and equipment. Ensuring that individuals maintain a distance greater than this nominal ocular hazard distance helps mitigate the risk of potential eye damage or other injuries related to laser exposure. The accurate identification and communication of NOHD are vital for effective laser safety management in various operational settings.