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Oregon State University

Laser Safety - Eyewear Selection Chart

 

Selecting Laser Eye Protection for Intrabeam Viewing for Wavelengths Between 400 and 1400 nm

 

Q-Switched (1 ns to 0.1 ms) Non-Q-Switched (0.4 ms to 10 ms) Continuous Wave Momentary (0.25 s to 10 s) Continuous Wave Long-term Staring (greater than 3 hrs) Attenuation
Max. Output Energy (J) Max. Beam Radiant Exposure (J cm-2) Max. Laser Output Energy (J) Max. Beam Radiant Exposure(J cm-2) Max. Power Output (W) Max. Beam Irradiance (W cm-2) Max. Power Output (W) Max. Beam Irradiance (W cm-2) Attenuation Factor Optical Density (O.D.)
10 20 100 200 . . . . 100,000,000 8
1.0 2 10 20 . . . . 10,000,000 7
10E-1 2 x 10E-1 1 2 . . 1 2 1,000,000 6
10E-2 2 x 10E-2 10E-1 2 x 10E-1 . . 10E-1 2 x 10E-1 100,000 5
10E-3 2 x 10E-3 10E-2 2 x 10E-2 10 20 10E-2 2 x 10E-2 10,000 4
10E-4 2 x 10E-4 10E-3 2 x 10E-3 1 2 10E-3 2 x 10E-3 1,000 3
10E-5 2 x 10E-5 10E-4 2 x 10E-4 10E-1 2 x 10E-1 10E-4 2 x 10E-4 100 2
10E-6 2 x 10E-6 10E-5 2 x 10E-5 10E-2 2 x 10E-2 10E-5 2 x 10E-5 10 1