6
IR
750 nm 700 nm 650 nm 600 nm 550 nm 500 nm 450 nm 400 nm
UV
Visible light:
electromagnetic radiation with a
wavelength between 380 and 750 nanometers, which
is detected by the human eye as these rays pass
through the atmosphere and reflect off the surface of
objects producing a color spectrum. Knowing the light
effects occurring in the specific work environment
helps you select the protective lens of appropriate tint
and filtering capacity.
Spectrum colors
Color
Wavelength (nm=10
-9
m) Frequency (THz =10
12
Hz)
Violet
380 – 420
789 – 714
Blue
420 – 490
714 – 612
Green
490 – 570
612 – 522
Yellow
570 – 580
522 – 513
Orange
580 – 650
513 – 462
Red
650 – 750
462 – 400
Ultraviolet radiation:
electromagnetic radiation with a wavelength shorter than visible light, but longer than the X-ray,
between 200 – 400 nanometers - it has three different types.
UV-A (315-400 nm):
has beneficial effects on the human system by promoting bone formation and tanning, lack of this
radiation leads to rickets. However, it contributes to the aging effect of skin by destroying vitamin A and is presumed to have
the ability to indirectly damage the DNA as well.
UV-B (280-315 nm):
is normally absorbed by the ozone layer of the Earth but radiation passing through directly damages
DNA, may cause skin cancer and weakens the immune system. UV-B radiation is most harmful to the eyes with possible
negative effects on the cornea (inflammation), conjunctiva (inflammation/pterygium), crystalline lens (cataracts) or even on
the retina (irreversible loss of vision).
Particular attention should be paid to protection against UV radiation not only in strong direct sunlight, but also in reflective
environments such as snowy terrain (85% UV reflection!), sand (20%), nearby bodies of water (10%), high mountains (10%
in every 1,000 meters) or in case of light reflected off pavements, walls or large glass surfaces. Artificial light sources may
also be harmful to the eyes, e.g. radiation generated during arc welding, quartz lamps, mercury-vapor spectroscopic lamps,
tanning lamps. To avoid the above hazards and provide users with maximum protection, each member of the Lux Optical
®
safety glass family filters 99,9% of harmful UV radiation.
UV-C (200-280 nm):
is totally absorbed by the atmosphere of the Earth and should only be considered when designing
protection for astronauts.
Infrared radiation:
electromagnetic radiation between visible light and radio waves, i.e. with a wavelength between 780
nm and 1 mm. Half of the energy of the sunlight hitting the Earth is within the range of thermal infrared radiation. Infrared
radiation occurring in welding may damage the retina mainly because of the heat generated or may trigger photochemical
processes damaging the eyesight.
General requirements for wearing glasses:
- Clean visor: use appropriate glass-cleaning solution and cloth or warm water with soap and soft rug.
- Regularly check the condition of your safety glasses. If there is any scratch or crack in the visor or the frame is damaged,
the glasses need replacement. Nothing but sound protective equipment can provide adequate protection.
- When using replacement lenses, ensure compatibility between the markings of the frame and the lenses. If mechanical
impact resistance classes are different, the lower class is applicable to the entire spectacle.
- Prescription lenses worn under the safety glasses may get damaged through specific mechanical impacts.
- The CE mark verifies that the protective equipment meets the requirements of 18/2008. (XII.3.) SZMM regulation including
provisions compatible with Directive 89/686/EEC and standard EN 166 following localization and harmonization.
Injuries to the eyes account for nearly 20% of accidents at work. The range of Lux Optical
®
glasses provides an answer for
all possible risk factors such as:
mechanical injuries:
foreign bodies which may cause various degrees of injury depending on their shape, size and
speed on impact
chemical injuries:
even the smallest amount of acids, bases, vapors, gases and mist may cause irreversible wounds
and burns on the cornea
radiation injuries:
strong light effects, ultraviolet (UV), infrared (IR) and laser radiation
heat injuries:
proximity of sources of high temperature, hot splashes.
The tests have been carried out by INSPEC Certification Ltd., a notified test laboratory in accordance with the following standards:
CE EN166:2001
(Europe),
ANSI Z87.1
(USA),
CSA Z94
(Canada),
AS/NZS1337
(Australia),
JIS T 8147
(Japan)
10
-3
m> infrared
10
0
m>high and very high frequency
10
2
m>high and very high frequency
10
5
m>alternating current
ultraviolet>10
-8
m
X-ray >10
-12
m
gamma>10
-13
m
cosmic >10
-15
m
Human visible spectrum
LUX OPTICAL
®
• GLASSES WITH TEMPLES
