How to Choose a Better Laser Safety Goggles (Glasses)
You need to distinguish 2 Important Points
1) Wavelength of your laser
2) Find out what protection level is needed premised on your laser's output.
Do this by looking for the recommended Optical Density (OD), asking your Laser Safety Advisor.
Optical Density(“OD) : Optical density measures how much light an object absorbs and how much of the light passes through the eye. Different lasers (and corresponding wavelengths) have different impact on the human eyes (the ANSI has created standards and published them based on research). If you are having trouble knowing the appropriate optical density needed for your glasses or laser safety protection, you can call us +86-29-83123155. We have included a diagram to aide a buyer in common industry notation. Please note, some assumptions have been made (the photons depicted are not drawn to scale, and finally please be sure to reach out if there is any uncertainty).
Visibility Light Transmission (“VLT”) – Color and visibility of specific color ranges often are significantly affected by laser glasses and goggles. Think distortion when wearing sunglasses to block the sun, (often less expensive) sun glasses do an effective job of blocking the sun, however everything is much more difficult to see because a lot of light generally is coming through. Other times with (typically more expensive) sunglasses, the sun is blocked and everything else looks very similar to how it would without the glasses.
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