Regular glass and plastic materials reflect a total of around 9% of light from the front and back surfaces of a lens, which means that vision is around one-tenth worse than it ought to be. If the lens material is thinner, there is more reflection and the loss of light can be up to 20%. All of this significantly affects clarity of vision.
Anti-reflection coating (AR) is applied to the surface of the lens to reduce reflections and achieve a clearer image with more contrast. Regular lenses, both glass and plastic, reflect around 4% of light from one surface or around 8% from both. Due to reflections, not all light and information makes it to the eye through the lens. The loss of light can be up to 20% in the case of thin (thinned) lenses. Reflection-related light loss is prevented by applying an anti-reflection or AR coating on the optical surface of the lens, which reduces the proportion of reflection to 1%. An anti-reflection coating highlights the natural beauty of the eyes and also ensures great vision in difficult light conditions, for example when driving in the dark. In addition to optical improvements there is also an important aesthetic effect – the lens is almost unnoticeable, which makes the glasses seem lighter.
Hardcoatmakes plastic lenses a lot more resistant to scratches. It does not ensure 100% scratch resistance, so we advise cleaning the lenses with special lens-cleaning solutions and cloths only.
HYDROPHOBIC (COATING THAT REPELS WATER AND DUST)
A hydrophobic surface makes it easier to clean glasses, they fog up less easily and they stay cleaner for longer.
All major lens manufacturers have significantly improved the quality of their AR coatings since 2004 by adding a molecularly dense hydrophobic (water- resistant) layer. Thanks to this the surface of the lens is significantly smoother and more durable, which reduces to need to clean glasses as often as the coating is dirt-resistant. The super hydrophobic finish ensures an especially smooth surface – the lenses will not catch any dirt or drops of water. Glasses with a hydrophobic coating repel water and dust and ensure that they clear of fog more quickly. To clean the glasses, you only need to use a special (clean) microfiber cloth, which will prolong the life of the glasses.
DIGITAL PROTECTION COATING
Digital protection coating, which is a coating that neutralises blue light, is designed to protect you against the harmful blue light emitted from digital devices like TVs, computer screens, tablets and smartphones. Blue light is a normal phenomenon, as it forms part of daylight. The goal of blue light is to keep us awake during the day. However, overexposure to this light can cause eye strain, fatigue and even insomnia. Digital protection coating protects the eyes from extra tension, increases comfort in vision and boosts contrast when using everyday smart devices.
100% UV protection
This coating prevents sun damage to the eyes. UV protection means that the lens will not let ultraviolet light through (i.e. so-called blue light, less than 400 nm of visible light). UV protection is necessary to avoid the damaging effects of ultraviolet light, which is dangerous to the eyes and reflected in large amounts from snow and water on sunny days.