Ski goggles are an indispensable protection for skiers. Because of the strong reflection of sunlight on snow and the irritation of the cold wind during sliding on the eyes, it is very important to choose the right ski goggles.
Whether you are a master or a beginner, suitable ski goggles must have the following basic conditions:
1. Anti-fogging:
The anti-fogging function of ski goggles is mainly on the inner lens. The material of the inner lens is cellulose acetate sheet (CP sheet), which is a kind of resin. This kind of sheet has strong water absorption. The water temperature is 75 degrees Celsius, and there is no fog on the vent hole of the 6cm diameter sink for 20 seconds.
The price of the cellulose acetate sheet is very expensive, and the domestic sheet does not meet the optical standard. More than 95% of the anti-fog sheet is imported, and the anti-fog is permanent anti-fog.
Therefore, to buy ski goggles, you need to buy a cellulose acetate sheet as an endoscope.
2. Choice of light transmittance:
The color of the lens is made by the color masterbatch or toner added during injection molding. The color directly affects the light transmittance of the lens, and the coating on the surface of the lens also affects the light transmittance, because the main raw material for the coating is silica As with titanium dioxide, everyone knows that the main component of sand is silicon dioxide. Coating on the frontal surface of the lens has two functions, one is to make the color more beautiful, and the other is to prevent ultraviolet rays.
We have to choose lenses with different light transmittance according to the light when skiing:
According to the light transmittance of the lens, we divide the lens into five ranges: S0, S1, S2, S3, S4, and choose lenses with different light transmittance according to different weather conditions. For example, ski goggles with S0 or S1 transmittance should be selected for cloudy days or at night. When the sun is full, you should choose S2 and S3 snow goggles.
Magnet absorbs the lens, quickly replace the lens
Magnet absorbs the lens, quickly replace the lens
The light transmittance of the lens must be marked on the regular snow goggles package, so pay attention to the light transmittance when choosing. If the product can be provided with high light transmittance lenses, it is the best choice, so that you can ski all-weather. The ski goggles should be easy to replace the lenses in order to adapt to the needs of different light. Magnet adsorption of the lenses has gradually become a fashion, and it is easier to replace the lenses with different light transmittance.
3. Frame material:
The frame should be made of TPU, TPU (Thermal Plastic Urethane), the hardness is 85 or 90 for the best comfort, and the impact resistance is also better. This hardness protects the user's face within the maximum range.
