Semiconductor laser (LD) safety standard(wavelength 400nm-700nm)
|Product Class||Power guide for
|Overview of major risks and risk management in
laboratories and work sites
|Class 1 and
|About 0.39mW or less||Avoid keeping on looking directly at the beam.
Class 1M, 2M, 3R is dangerous to eyes when using optical observation equipment such as binoculars.
|Class 2 and
|About 1 mW or less|
|Class 3R||About 5 mW or less|
|Class 3B||0.5W or less||Extremely dangerous when observing the direct beam or specular light with the naked eye. Controlled area required.|
|Class 4||Over 0.5W||Direct beam or specular light and diffuse reflection also cause damage. There is a risk of fire. Controlled area required|
※Continuous wave (CW): According to the definition of JIS C6802, a laser that continuously operates for 0.25 seconds or longer is a CW laser.