How do we test laser safety glasses to ensure your protection?

Testing laser safety lenses involves several methods to ensure their effectiveness in protecting you against lasers. At Phillips Safety, we do the following tests to ensure your eyes are always protected.

1. Optical Density (OD) Measurement: Optical density measures the lens' ability to attenuate laser light. All Laser Lenses are tested in a spectrophotometer to measure the transmission of laser light through the lens at specific wavelengths. The measured optical density should align with the desired level of protection for the laser's wavelength.
2. Beam Attenuation Test: This test involves exposing the lens to laser beams of known power and wavelength. The lens is placed in the beam path, and its ability to attenuate the laser light is evaluated by measuring the transmitted power. The transmitted power should be within the specified safe limits.
3. Damage Threshold Test: This test determines the maximum laser power level the lens can withstand without sustaining damage. The lens is exposed to increasing laser power levels until it shows signs of damage, such as discoloration, burn marks, or structural changes. The maximum power at which the lens remains undamaged is the damage threshold.
4. Angular Dependency Test: Laser safety lenses should provide consistent protection across various angles of incidence. This test involves measuring the lens' attenuation capability at different incident angles to ensure uniform protection.
5. Frame Durability Test: While not specific to the lens, the frame durability test assesses the overall robustness and strength of the frame to ensure it can withstand physical stresses and impacts.

 Compliance at Phillips Safety Products to the recognized laser safety standards, such as ANSI Z136.1 or EN207, assures that the lenses have undergone rigorous testing to meet specific safety requirements.