Mountaineers enthusiasts like to challenge themselves, choose the higher altitude of the snow mountain. All safety measures should be taken during the climbing process, and professional snow goggles can effectively protect the eyes from damage.
Select Ski Goggles should meet the following requirements:
- It absorbs 100 % of UV radiation
- Certain pass rate of visible light
- Equipped with a side hood to prevent the snow from reflecting light
- Have Anti-frost and anti-fog design
- Equipped with glasses rope, easy to adjust the temple
Why need to select ski goggles can absorbs 100 % of UV radiation and Certain pass rate of visible light
Sunglasses are the must for climbing. Snow on high mountains can easily damage your eyes. In terms of ultraviolet light, the reflected light from snow at a height of 10,000 feet (3.05 km) is more than 50 percent of that from the seaside. The naked eye’s web bread is easily damaged, causing a great deal of pain called snow blindness. Sunglasses can reduce damage, but don’t be fooled by cloudy weather. Because UV rays penetrate clouds and harsh light can cause headaches, sunglasses can filter 95 to 100 percent of the time.
Light can be simply divided into: ultraviolet, visible light
- ultraviolet – wavelength 180-380 nm.UVA – wavelength 380-315 nm, making the skin red;UVB – wavelength 315-280 nm, black skin.UVC – wavelength below 280 nm, most absorbed by the atmosphere, but the most dangerous, most should be protected
- Visible light VL – wavelength 380-780 nm. Too much visible light causes a blinding effect that requires partial absorption (you can’t see anything at all).
Among them too strong light if have no shade, direct illuminate the eye on the retina, can burn cornea and retinal vision cell, light can cause vision to drop, heavy can be completely blind, this is called in the medical science snow blindness.
According to the pass rate of the lens to visible light, we divided into five protection levels
Why select Ski Goggles need equipped with a side hood to prevent the snow from reflecting light and have Anti-frost and anti-fog design?
For glaciers, sunglasses should have a transmission rate of 5-10 and for multipurpose sunglasses, it should have a transmission rate of 20. When buying eyeglasses, if you want your eyes to see more clearly, choose the color of the gray lens.if you want the weather to be cloudy or foggy and you want to see it carefully,choose yellow lens.
For infrared, unless you look directly at the sun, it will be damaged. But regular sunglasses prevent infrared rays from penetrating and protect the eye. Sunglasses must have a protective device on the side to lower the sun through the eye, but must have good ventilation to prevent fogging of the lens. Or use antifogging lenses or antifogging cleaners, you may need to carry a spare pair of sunglasses to avoid losing them. You can also use cardboard or clothing to cut thin strips to cover your eyes.
Mountaineering always faces all kinds of bad weather, so there are special requirements for sunglasses.In addition to the high level of protection required for sunglasses, other aspects of sunglasses are also important.
Antifogging sunglasses, nobody want to walk a few steps of their own sunglasses on a layer of fog, high quality lenses have this function, wipe when also need to be particularly careful
Qualified sunglasses can be designed with baffles. As close as possible fit to the face of the wearer’s, blocking out sunlight in all directions
The main component of Ski Goggles
- UV lenses, With a UV index of up to 400, it can filter ultraviolet rays and strong light, and is used to protect the cornea and retina from ultraviolet rays.
- PC lenses- Strong impact resistance
PC is a lightweight, wear-resistant, impact resistant and high light transmittance professional polyester material lens. Its excellent characteristics have been widely used in the aerospace industry. So it is also known as”space piece”.
PC lens quality is very light, the specific gravity is only 1.5g/cm3,and the density of water. Its low index of refraction relative to light transmittance is very high. Hardness up to the international impact resistance standard 2h-4,10-12 times higher than the general resin sheet,60 times higher than the glasses lens. PC is commonly known as bulletproof glass,100% uv protection. 3-5 years will not yellow(common resin after a few months will be yellow), weight than common resin tablets 37 percent light.
Thermoplastic Polyurethane Environmental protection. Wear resistance, aging resistance, oil resistance, water resistance, mildew resistance. High hardness, strong bearing capacity, impact resistance, outstanding damping performance.
Features: the material has excellent flexibility, can be knead at will. Not easy to deform or fracture, to ensure that the mirror will not cause damage to the eyes when hit.
4. Triple Layer Foam
Double layer cotton, hot pressed cotton (can be multi-layer or single-layer) features: high density sponge breathable effect, generous appearance, close to the face. Its soft, delicate material will not bring any discomfort to the face;Its breathable function makes the hot air from the facial skin dissipate to the outside of the mirror, to ensure that the mirror has a good visual effect.
100% cotton high elastic band (LOGO and non-slip band can be added to the surface) Features: non-slip (or ordinary) high elastic band that can be adjusted freely, suitable for any head type
Functions and Uses of Ski Goggles
- Ski Goggles can keep your eyes away from snow, cold and ultraviolet radiation. Without high-quality ski goggles, your eyes can be at risk of abrasions, ruptures, burns or frostbite. Not to mention the possibility of being injured by unforeseen obstacles such as tree branches.
- This kind of goggles set up layers of levels, effectively prevent fog, give users a clear visual enjoyment.
A Anti-fogging lens coating
There is a kind of absorbent coating on the surface of the lens, which can absorb water vapor before the fog occurs. Scientific experiments have proved that this is an effective method to prevent fogging at present.
B The double lenses
In the early 1970s, a double-layer lens was invented, which formed a closed air layer in the middle of the lens, ensuring that the air inside the lens was warm and dry.
C Breathable foam film design
The breathable foam film layer can effectively expel moisture and lead into dry air to prevent fogging.