Standards and pictograms - eye protection

All performance levels, pictograms and information given on this page correspond to the status as of September 2022. This information may change during the validity of this page. Please do not hesitate to contact us if you have any questions or require up-to-date information. All information without guarantee.

Personal eye protection
Functional requirements for different types of personal eye protection.

Marking of the oculars (example)
Scale number (only for filters)                                                                                      2C-1,2
Identification mark of the manufacturer                                                                  AS
Optical class                                                                                                                       1
Abbreviation for mechanical strength                                                                       F 
Abbreviation for the resistance to fogging of oculars                                           N

Scale number (only for filters)                                                                      Code number        Scale number
Welding filter                                                                                                        Without                    1,2 - 16 
Ultraviolet filter (the recognition of colours may be affected)             2         
Ultraviolet filter (good colour recognition)                                                2C                                 1,2 - 16
Ultraviolet filter (good colour recognition)                                                3      
Infrared filter                                                                                                        4                                   1,2 - 16
Sunglare filter (without infrared requirement)                                         5                                   1,1 - 4,1   
Sunglare filter (with infrared requirement)                                                6                                   1,1 - 4,1
Scale number: the higher, the lower the
permeability (transmittance).

Optical class
The lower, the better.

Abbreviation for mechanical strength             Mechanical strength requirements
Without                                                                            Minimum robustness
S                                                                                         Increased robustness
F                                                                                         Protection against high speed particles 
                                                                                           (low energy impact)
B                                                                                        Protection against high speed particles 
                                                                                           (medium energy impact)
A                                                                                         Protection against high speed particles
                                                                                           (high energy impact)

Marking of the frames (example)
Identification mark of the manufacturer                                                      AS
Number of this standard                                                                                   166
Abbreviation for increased mechanical strength /
protection against high speed particles / extreme temperatures         F                                                           

Abreviations for areas of use                     Description of application areas

None - Basic use                                           Unspecified mechanical risks and hazards from
                                                                           ultraviolet, visible and infrared radiation and solar
                                                                           radiation
3 - Liquids                                                       Liquids (drops and splashes)
4 - Coarse dust                                              Dust with a grain size > 5 μm
5 - Gas and fine dust                                    Gases, vapours, mists, smoke and dust with a particle
                                                                           size < 5 μm
8 - Arc fault                                                    Electric arc in the event of a short circuit in electrical
                                                                          systems
9 - Molten metal and hot solids                Splashes of molten metals and penetration of hot solid

Ultraviolet filter
Scale numbers and transmission requirements for protective filter against ultraviolet radiation.

Scale number       Colour recognition            Typical usage
2-1,2                         May be affected if not         For use with radiation sources that predominantly 
2-1,4                         marked with scale                 emit ultraviolet radiation with wavelengths shorter than            
2-1,7                         number 2C.                             313 nm and where glare is not an essential factor. 
                                                                                       This covers the entire UV-C and most of the UV-B range.                                                                                      
2,2
2-2,5                       May be affected if not           For use with radiation sources that emit intensive radiation
2-3                           marked with scale                  in the UV range and visible spectral range and where a 
2-4                           number 2C.                              weakening of the visible radiation is therefore required.
2-5                      

Sunglare filters for industrial use
Scale numbers, transmission levels and corresponding requirements for sunglare filters for industrial use.

Scale number   Usage                                                                                                           Desigantion
5-1,1                    This scale number applies only to certain phototropic 
6-1,1                    sunglare filters in a bright state and for the range of
                             high luminous transmission of graduated filters.
5-1,4                    As a very bright filter.                                                                               Very bright
6-1,4
5-1,7                    As a bright filter.                                                                                         Bright
6-1,7
5-2                       As recommended universal filter, usually easy to use.                   Medium
6-2                     
5-2,5                    Mostly used in Central Europe.                                                              Dark
6-2,5             
5-3,1                    In the tropics and suptropics, for sky observations, in high         Very dark
6-3,1                    mountains, snow areas, bright water areas, sandy areas, 
                             lime quarry and chalk quarry.
5-4,1                    Only at extreme irradiances.                                                                 Extreme dark
6-4,1

Eye and face protection for operational applications

Specifies general requirements for eye and face protection devices. These protective devices are intended to protect the eyes and face of persons from typical occupational hazards, such as the impact of flying particles and fragments, optical radiation, dust, splashes, molten metal, heat, flames, hot solids, harmful gases, vapours and aerosols.

Marking of lenses

AS       Identification mark of the manufacturer
GL       Filter performance
3          Protection level (only for filters)
CT       Strength level C (45 m/s) at extreme temperatures
1         Optical power amplification
K         Surface damage due to fine-grained particles
N         Resistance to fogging

Marking of frame

16321      Basic intended use
AS            Identification mark of the manufacturer
CT            Strength level C (45 m/s) at extreme temperatures
1-M          Head size

Code number          Requirements

16321                       Basic intended use
1                                Optical power amplification (characterisation optional)
3                                Droplets (liquids (drops and splashes))
4                                Coarse dust particles (dust with a particle size > 5 μm)
5                                Gas and fine dust particles (gases, vapours, mist, smoke and dust with a particle size < 5 μm)
6                                Liquid flows
7                                Radiant heat
9                                Molten metal and hot solids (splashes of molten metals and penetration of hot solids)
CH                             Chemical resistance
K                                Surface damage due to fine-grained particles
N                                Resistance to fogging
C                                Strength level C (45 m/s)
D                                Strength level D (80 m/s)
E                                 Strength level E (120 m/s)
HM                             Strength level HM (high mass)
CT                               Strength level CT (45 m/s) at extreme temperatures
DT                               Strength level D (80 m/s) at extreme temperatures
ET                                Strength level E (120 m/s) at extreme temperatures
HMT                            Strength level HM at extreme temperatures

Warnings:

If the strength level symbols for the viewing panel/filter and support body are not the same, the lower strength level must be assigned to the complete protective device. The complete protective device only provides the protection corresponding to the code numbers or code letters 7, 9, CH if the lens and the support body have the same symbol. Protective devices that have been exposed to an impact must no longer be used and must be discarded and replaced. Scratched or damaged lenses must be replaced. This protective device is suitable for use with the 1-M test head.

Ultraviolet (UV) protection filter

level                      Light transmittance         Typical use
U 1,2                      74,4% - 100%                        For use with radiation sources that predominantly emit ultraviolet radiation with wavelengths 
U 1,4                      58,1% - 74,4%                       shorter than 313 nm and when glare is not a significant factor. This covers the entire UV-C 
U 1,7                      43,2% - 58,1%                       and most of the UV-B range.

U 2                         29,1% - 43,2%                        For use with radiation sources that emit intense radiation in the UV and visible spectral range and
U 2,5                      17,8% - 29,1%                        where attenuation of the visible radiation is therefore required.
U 3                          8,5% - 17,8%
U 4                          3,2% - 8,5%
U 5                          1,2% - 3,2%
L (optional)             Requirements for the detection of light signals

Sun protection filters for industrial applications

level                         Light transmittance                    Typical use

G0                              > 80% (very bright)                        As a very bright filter.
G1                              43% - 80% (bright)                         As a bright filter. Not suitable for twilight or night-time                                                                                                                                                                                      driving.                                                                                                                                                                                 
G2                              18% - 43% (medium)                     As a recommended unsiversal filter, usually good to use. Not suitable for twilight or night-time                                                                                                       driving.
G3                              8% - 18% (dark)                             Mostly used in Central Euope, e-g- for roof work in intense sunlight. not suitable for twilight or                                                                                                           night-time driving.
G4                              3% - 8% (very dark)                        Very dark, inthe tropics and subtropics, for sky observations, in high mountains, snowy-areas, light-                                                                                      coloured water surfaces, sandy areas, limestone and chalk quarries. Not suitable for twilight and                                                                                                       night-time driving. 

L (optional)             Requirements for the detection of light signals

Note: Some national requirements may specify a different wavelength limit for UV-A radiation. Additional lighting may be required. Not suitable for driving at night or in poor lighting conditions.

The quality of our products is our first priority and our whole product range is meeting our high standards. Products which have further premium features (e.g. due material selection, fitting, characteristics, finishing) are marked with this pictrogram.

UV 400 protection is important as it protects the eyes from harmful ultraviolet (UV) radiation. It means that the safety goggles block all rays with a wavelength of up to 400 nanometers.

Specifies that the lenses are resistant to fogging (marking: N).

Indicates that the viewing panels are scratch-resistant (marking: K).

Indicates that the lenses have an abrasion-resistant coating.

Indicates that the lenses have an Anti-Fog-Coating.