What kind of laser goggles should you wear when using CO2 laser?

When using a CO2 laser, specific safety glasses are required to protect the eyes from laser damage. Consider the optical density (OD) level. Below are the requirements for safety glasses suitable for CO2 lasers:

Protective Wavelength

CO2 lasers typically have a wavelength of around 10.6 micrometers. Safety glasses should effectively block laser radiation at this wavelength. Choose glasses with a high OD value for the CO2 laser wavelength to ensure adequate protection. Generally, the higher the OD value, the better the protection. The OD level is a crucial factor to consider when selecting laser safety glasses and is usually marked directly on the glasses. For CO2 lasers, glasses with an OD level higher than 5 are recommended to provide sufficient protection.

Material and Quality

① Lens Material:

High-quality optical materials such as polycarbonate are commonly used. This material has good impact resistance and optical properties, capable of withstanding the heat and pressure generated by laser exposure.

The lenses should be specially treated to enhance their abrasion resistance and scratch resistance, ensuring that the protective effect is not reduced due to wear during use.

② Frame Design:

The frame should be sturdy and durable, capable of securely holding the lenses and fitting tightly against the face to prevent laser light from entering the eyes from the sides.

Certifications and Standards

Choose safety glasses that comply with international standards, such as products certified by the American National Standards Institute (ANSI) or European standards (EN). These standards ensure the quality and protective performance of the safety glasses.

Other Considerations

① Visible Light Transmittance: While ensuring laser protection, choose glasses with high visible light transmittance to clearly see the surrounding environment during operation.

② Cleaning and Maintenance: Regularly clean the safety glasses using a dedicated cleaning solution and soft cloth. Avoid using abrasive materials or chemical solvents to prevent damage to the lenses.

③ Storage: Store the safety glasses in a dry, clean place, away from direct sunlight and high-temperature environments, to extend their lifespan.

In summary, when using a CO2 laser, selecting the right safety glasses is crucial. Be sure to choose high-quality safety glasses that comply with standards based on factors such as the laser's wavelength, power, and operating environment, and wear and maintain them correctly to ensure eye safety.