2021-12-31
According to the wavelength and maximum output laser power of laser products, laser products are divided into the following 7 grades: 1, 1M, 2, 2M, 3R, 3B, and 4. Among them, the two levels of 1M and 2M represent that the safety level of the product is the same as level 1 and level 2, but when using optical equipment such as telescopes, the degree of hazard may be amplified to exceed level 1 and level 2. Level 3 is also divided into two sub-levels, 3R and 3B.
| Class | Definition | Suggestion |
| 1 | Non-hazardous | No need for Laser Safety Goggle |
| 1M | Safe visible laser (400-700nm) ,without optical magnification | No need for Laser Safety Goggle |
| 2 | Safe visible laser (400-700nm),0.25 seconds wink once Safe | No need for Laser Safety Goggle |
| 2M | Safe visible laser (400-700nm),0.25 seconds wink once Safe,with optical magnification | It is recommended to use Laser Safety Goggle |
| 3R | There is no harm in normal use, and it is harm to look directly at the beam. | It is recommended to use Laser Safety Goggle |
| 3B | Looking directly at the laser is not safe, try to avoid diffuse reflection laser | It is recommended to use Laser Safety Goggle |
| 4 | It is not safe to look directly at the laser and its diffuse reflection laser | Laser Safety Goggle must be used |
All-band protective laser protective glasses，Suitable for all types of laser protection
