Semiconductor laser (LD) safety standard(wavelength 400nm-700nm)
Answer
| Product Class | Power guide for continuous wave※ |
Overview of major risks and risk management in laboratories and work sites |
|---|---|---|
| Class 1 and Class 1M |
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 Class 2M |
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.
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