Blue lasers commonly operate around 445nm or 450nm and are used in engraving, research, alignment, and industrial applications.

Because blue laser light is highly visible and often produced at relatively high power levels, specialised laser safety glasses are required.

Protective eyewear should provide appropriate optical density at the laser wavelength while maintaining sufficient visibility for the intended task.

Users should always verify that the eyewear specifications include protection at their laser wavelength before operation.