Guide to Lens Markings
Understand what protections each lens offers simply by knowing what each symbol means.
Select A lens Marking
MARKING ON lens:
| CE | Certification Mark |
CE
No further info.
| 2, 2C | UV (2C doesn’t affect colour recognition) |
| 4 | IR filter |
| 5 or 6 | Solar filter |
| 1.7 to 7 | Welding filter if no shade number |
Lens Filter Type
No further info.
| 1.2 | Clear or Amber |
| 1.4 | Blue or I/O Waterproof |
| 1.7 | Minimises or I/O |
| 2.5 | Grey or Revo |
| 3.1 | Dark Grey or Mirror |
Scale Number
No further info.
| R | Riley |
| VL | Vision Lab |
Identity of the Manufacturer
No further info.
| 1 | High Optical Quality |
Optical Class
No further info.
| S | Increased Strength |
| F | Low energy impact, resists a 6mm, 0.86g ball at 45m/s |
| B | Medium energy impact, resists a 6mm, 0.86g ball at 120m/s |
| A | High energy impact, resists a 6mm, 0.86g ball at 190m/s |
| T | Protection against high-speed particles at extreme temperatures |
Mechanical Strength
If protection against high-speed particles at extreme temperatures is required then the selected safety eyewear product should be marked with the letter T immediately after the 'Mechanical Strength' letter; eg: FT, BT or AT. If the 'Mechanical Strength' letter is not followed by the letter T, the safety eyewear product shall only be used against high speed particles at an ambient temperature. If the frame and lens display different certification marks (F, B or A), the lowest level should be assigned to the entire safety eyewear product.
| 8 | Short circuit electric arc |
| 9 | Molten metal splash |
| K | Resistance to scratches by fine particles |
| N | Resistance to fogging |
Optional Requirements
No further info.
| U6 | UV (All lenses) |
| L1.3 | LED |
| L1.7 | Solar (I/O, Twilight) |
| L2.5 | Solar (Grey) |
| L3 | Solar (Dark Grey) |
| W4 | Infrared lens |
ANSI
No further info.
CE
| CE | Certification Mark |
FURTHER INFO
No further info.