There are many technical aspects to any pair of polarised sunglasses. Here we explain what some of the common terms mean and what they do for the performance of Mako sunglasses.
Glass or Polycarbonate lenses?
Glass lenses have much higher clarity and scratch resistance than plastic based lens materials such as polycarbonate. Polycarbonate lenses are lightweight, impact resistant and cost less.
Does thinner glass lenses mean clearer vision?
No. Thinner glass has little to do with clarity but rather the focus should be on the quality of the glass used. Thinner glass lenses can break more easily depending on sunglass design. Mako glass lenses range from 1.8mm to 2.1mm in thickness depending on the individual frame design. Mako glass polarised lenses are made using high grade crown glass to ensure optimum clarity.
What is a decentred lens?
Decentred lenses have been used for decades. They were developed by still and video camera lens manufacturers in the 80s. All high curve / wrap around sunglasses should use decentred lenses to move the optical centre of the lens in front of your eye where you need it. This reduces distortions in the periphery to below the limits of the eye. A high wrap lens that is not decentred, would give you a seasickness type effect.
What is an AR coating?
Anti-reflective (AR) coating was developed before WW2 and stops reflections occurring on the inside face of the lens giving you better vision. We use 12 layers of AR on our glass lenses (approx 30% higher than industry standards) as well as oleophobic and hydrophobic coatings.
What is an oleophobic coating?
Oleophobic treatments or coatings are added on the lens surfaces to repel oil, dust, water, and dirt. This makes you sunglasses easier to clean and makes the lens less susceptible to scratching. It's similar to some mobile phone coatings available today.
What is a hydrophbic coating?
Hydrophobic coatings on the outer layer of the lens ensure water beads up and runs off the lens in a way similar to the way rain will run off a windsreen that has been treated with Rain X.
Why do polarised lenses come in different colours?
Polarising filters are always combined with tinted lenses and will reduce glare and ambient light. Grey lenses for example cut down the most ambient light. Copper on the other hand appear brighter by cutting down the most blue and green light. This in effect makes what you're seeing brighter so you can see more while still reducing glare.