Question

Decide on the distance from the laser that it is considered safe for someone to work full time

(8 hours) and exposed to direct "irradiation" with a Nd: YAG 100 Watt laser

(λ = 1064 nm) partly with a 5.0 Watt Argon laser (λ = 488 nm).

Assume that the laser beam has a diameter of 2 mm, and that the laser scattering angle is 2 mrad

(between row)

What optical density should a pair of goggles have to protect from this exposure?

Expect a maximum open pupil with a diameter of 7 mm.

Answer 1