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How to Choose Laser Protective Glasses

How to Choose Laser Protective Glasses

1. Laser wavelength range:
Different types of lasers have different wavelength ranges, so protective glasses need to be selected based on the wavelength of the laser you are using. For example, visible light lasers and near-infrared lasers have wavelength ranges between 190nm and 1400nm.

2. Optical density (OD):
The optical density of the laser is also an important consideration for selection. The higher the optical density, the stronger the protection required. Choose the appropriate optical density protection level based on the actual application of the laser. For example, OD=1 means the light intensity decreases by 90% after passing through the medium; OD=2 indicates a decrease of 99%; OD=3 indicates a decrease of 99.9%; OD=4 indicates a decrease of 99.99%; OD=5 indicates a decrease of 99.999%; OD=6 indicates a decrease of 99.9999%, and so on.

3. Lens material:
Common protective lens materials include glass, polycarbonate, etc. Different materials have different corrosion resistance and impact strength, so choose according to the specific usage environment.

4. Frame structure:
The frame needs to be sturdy with good sealing to completely block the laser from the outside and prevent it from entering from the edges. Side shield design is also important.

5. Manufacturing standards:
Choose qualified products that meet industry standards, such as FDA, CE certification, to ensure quality.

6. Comfort:
Since protective glasses need to be worn for long periods, comfort in terms of weight, ventilation, etc., is also a consideration factor.

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