How to Select Laser Safety Eyewear
Laser Eyewear Selection Tips
There is an ever expanding array of complex and sophisticated laser systems used in material processing. Laser safety officers in military, medical, research and development applications demand high performance laser safety eyewear options for their laser personnel. When selecting the most appropriate laser protective eyewear solutions the LSO needs to consider the working environment, viewing conditions, operational and performance specifications of the laser as well as beam delivery systems.
The ultimate goal in selecting laser eye protection is to provide comfortable and stylish eyewear that laser personnel will wear with protection levels (OD) that properly attenuates or reduces potentially hazardous laser exposures to levels safely below maximum permissible exposure (M.P.E.) levels.
Laservision laser protective eyewear is available in variety of technologies such as glass, polycarbonate, and nanospec. Laser eyewear filters are available in absorptive or reflective dielectric thin film technology. Absorptive lens filters are made using high impact, high optical quality polycarbonate or glass materials where light absorption at a specific laser wavelength is expressed in terms of optical density (OD) and is calculated by the following equations: OD = -log10T = -log10(I/Io ) = log10 (1/T )
- T = Transmittance at the wavelength of interest
- Io = Intensity of incident beam
- I = Intensity of transmitted beam