PROTECTION AGAINST UV-A and UV-B RAYS
The decrease of the protective effect of the ozone layer increases the importance to be well protected of the sun. Indeed, the eyes (and our skin) are very sensitive to high energy rays which exist in
the ultraviolet (UV) spectre. even if the weather is cloud covered, the UV protection is essential because the clouds absorb visible light, but very little UV.
The eyes are even more exposed when we are in moutains or in environments where the UV are reflected by snow, water, sand, reverberation from clear walls, windows or mirrors (for example : water reflects 5 to 10% of UV rays; sand 20%; snow 85%). Furthermore, in moutains, the quantity of received UV raises by 10% every 1000 meters.
This is why all our safety glasses LUX OPTICAL filter 99,9% of UV rays.
SPECIAL FEATURES
Polarized lenses : Polarized filters provide a better comfort in zones of high reflection (buildings with mirror walls, water, light sand, snow,…) and a better perception of relief and contrasts.
UV400 : For an additional protection up to 400 nm against the blue light, which follows the ultraviolet (up to 380 nm) and is certified to protect 100% against UV rays.
IR : the infrared light follows the visible red light, but is invisible for human eyes and lead to a warming up of irradiated surfaces and bodies.
EN1836 lenses: The lenses of sun shine glasses are made to protect the wearer against the dangerous action of sunlight.
The European standard EN1836 classifies the lenses in 5 categories which are distinguished according to the percentage of light absorbed by the lens.
Lens colours, EN Standards and recommended use:
| Lens colour | CE Scale Number | EN Standard | % visible light transmittance |
Cat. EN 1836 | Features |
| IR5 | 5 | EN169 | 1.18-3.16% | N/A | Suitable for the environments with low to medium levels of IR radiation i.e. metal ouring, gas soldering, cutting and brazing. Light acetylene welding. Not appropriate for drivers nor driving. |
| Clear | 2-1.2 | ΕΝ170 | 90% | 0 | General purpose that offers maximum visibility. Indoor lens, suitable for mechanical work, or dusk, dawn and night time activities. An excellent safety lens for mechanical protection. |
| Amber | 2-1.2 | EN 170 | 89% | 0 | Maximum enhancement of contrast in low light environments i.e. warehouse. Blocks out 87% blue light in high level of detail definition and color regognition. Provides brighter view in early morning or late evening, and in cloudy, foggy, or hazy days. Recommended for night shift workers, surface inspection, mechanical manual work |
| I/O mirror | 5-1.7 | EN172
UV400 |
53% | 1 | Colourless UV400 lenses with light gold coating for indoor and outdoor use. A 100% protection against UV-A and UV-B rays. No deterioration of the colour perception. Usually used by indoor and outdoor workers, i.e. fork lift truck or delivery men/women. |
| Brown | 5-2.5 | EN172 | 23% | 2 | Enhances perception between light and shadow, especially in forest environments. A low light transmission color that heightens visual acuity and improves color perception and is suitable for all light conditions. |
| Smoke | 5-2.5 | EN172 | 17% | 3 | Protects eyes against excessive light ang high levels of hazardous visible light and UV radiation without distorting color perception. Ideal for outdoors, especially for bright days and bright sunlight, but does not enchance target. General purpose safety lens |
| Green | 3-3 | EN170
UV400 |
16% | 3 | Green UV400 lents. Provides protection from excessive glare and from 100% harmful ultraviolet (UV-A and UV-B) radiation. Alternative to standard smoke lens. |
| Fire Red | 5-3.1 | EN172 | 14% | 3 | Reduces sunglare and excessive sunlight. Dark lens without colour degradation. Usually used for outdoor applications in strong full sun condition. The mirror reflects light reducing the amount of light which passes through the lens. |
| Dark Smoke | 5-4.1 | EN172 | 6% | 4 | For exceptional strong sun luminosity and high glare condition, but not suitable for traffic driving. Recommended for high mountain activities and against dazzle from clear surfaces like snow, sand, buildings. |
| Polarized Dark Smoke | 5-4.1 | EN172 | 6% | 4 | Great for exceptional strong and direct sun luminosity and high glare condition, but not suitable for traffic driving. Recommended for high mountain and outdoor activities. Blocks out reflected waves of light (water, mirrors, snow…) and improve the contrasts. 100% UV protection. |
EN Standards for eye protection
EN 166: Basic requirements
ΕΝ 169: Welding filters
ΕΝ 170: UV filters
ΕΝ 172: Sun glare filters for industrial use
ΕΝ 175: Welding equipment
ΕΝ 379: Welding filters with adjustable or double shading
ΕΝ 1731: Eye and face protection with mesh
EN 1836: Sun glare filters for sport and recreation