When choosing laser goggles, you need to consider the following key factors:

1. Wavelength matching: Choose goggles that are suitable for the wavelength range of the laser used1.
2. Optical density: Laser goggles must have sufficient optical density to block the laser beam, and the OD (optical density) value is generally required to be no less than 41.
3. Field of view transmittance: Affects the transparency and comfort during use, and is generally required to be above 93%1.
4. Dispersion: Laser goggles must reduce or eliminate the dispersion of laser beams to prevent unpredictable laser hazards1.
5. Protection ability: Laser goggles must be able to protect the beam of a specific laser and avoid problems such as beam diffraction, reflection, penetration and leakage1.
6. Comfort: Laser goggles should have appropriate wearing comfort to prevent discomfort or pressure during wearing1.
7. Maximum irradiation: Determine the maximum irradiance or maximum irradiation of the laser output based on the maximum output power (or energy), beam diameter, pulse time and other parameters of the laser used3.
8. Specific protection wavelength: When choosing protective goggles, it is necessary to determine it based on the wavelength of the laser used3.
9. Required minimum optical density value: Determine the required minimum optical density value of the glasses according to the maximum allowable irradiation (eye exposure limit) of the corresponding wavelength and irradiation time, and select appropriate protective glasses accordingly3.
10 Anti-laser radiation ability: Consider the non-uniformity, asymmetry, incident light angle effect, etc. of the lens3.
11. Visible light transmittance: The VLT value is less than 20%, and laser protective glasses need to be used in a well-lit environment3.
12. Frame: Whether to wear myopia glasses, facial contour, etc.3.
In summary, when choosing laser goggles, it is necessary to comprehensively consider the above factors and purchase them according to actual needs and specific working environment. If you cannot determine the required goggles standard or specific parameters, you should consult professionals or relevant technicians.

1. Eye Protection: Laser beams, especially those used in marking machines, can cause severe eye damage. The intense light can burn the retina, leading to permanent vision loss or blindness. Protective goggles are designed to block or filter the specific wavelength of the laser, preventing it from reaching your eyes.

2. Reflections and Scattering: Even if you are not directly looking at the laser beam, reflections or scattered laser light from surfaces can still be harmful. Protective goggles help mitigate this risk by filtering out harmful wavelengths.

3. Compliance with Safety Standards: Many regulatory bodies and safety standards (e.g., OSHA, ANSI) mandate the use of appropriate eye protection when working with lasers. Wearing goggles ensures compliance with these regulations, reducing liability and promoting a safe working environment.

4. Preventing Accidents: In a busy or shared workspace, accidental exposure to laser beams can occur. Protective goggles act as a safeguard against such unforeseen incidents.

5. Specific Wavelength Protection: Different lasers operate at different wavelengths, and protective goggles are designed to protect against specific wavelengths. Using the correct goggles ensures that your eyes are protected from the particular type of laser you are working with.