Lens Marking
Optical class symbols:
1. Continuous work
Mechanical strength symbols:
F. Low energy impact, resists a 6 mm, 0.86 g ball at 45 m/s
Maximum protection for glasses.
T. The letter T, immediately after the mechanical strength symbol,
authorises use for high speed particles at extreme temperatures.
Others symbols:
CE European standard Manufacturer name
FRAME MARKING
EN 166: Guaranteed minimum resistance of the protective eyewear against
everyday risks including dropping the protective eyewear onto the ground,
ageing by light exposure, exposure to heat or corrosion etc.
F. Low energy impact, resists a 6 mm, 0.86 g ball at 45 m/s
Maximum protection for glasses.
T. The letter T, immediately after the mechanical strength symbol, authorises
use for high speed particles at extreme temperatures.
European standard Manufacturer name
