Glasses and Sunglasses Lens Coating Explained

Scratch Resistant

Still CR39, but with a clear tough coating on both sides to prevent day to day scratches. Not scratch proof (no lens material is) but does help extend the life of lenses. Can still be tinted.

Reflection-Free (HMAR)

Still CR39 plastic, but with a multi layer coating to help reduce ghost imaging. Very useful for night driving, and those working on computers, as it helps reduce the glare. Also has excellent cosmetic benefits, as it enables everyone else to see straight through to your eyes.

Comes with a scratch resistant coating as standard.

Uncoated lenses lose over 10% of incident light to reflections. Reflection Free lenses reduce this to less than 1%.

All camera lenses have this coating.

Reflection fre lenses before and after, with and without: Before or without Reflection fre lenses before and after, with and without: After or with

Reflection free lenses compared with normal lenses

We recommend Essilors" Crizal Forte as our supercoated lens.

Crizal Forte

Comparison of lens coatings

STATE OF THE ART

The most advanced and enduring AR lens on the market - with unique water repellence feature

61% of AR wearers and prospects declare that lenses allowing droplets to quickly slide off the lens surface fulfil a need* *Source: 2009 worldwide study: 4 countries, 3714 wearers

For true 'premium seekers', Crizal Forte continues to deliver market-leading performance across all key vision criteria. It remains supremely easy to clean, is as scratch resistant as AR coated glass and boasts unparalleled hydrophobic performance (with a slide angle of just 6 degrees)

Demonstration of Crizal lenses with water drops

Ultra-efficient in defeating the 5 enemies of clear vision

Premium AR Efficiency

The optimisation stack layers combined with a limited number of layers brings a premium AR efficiency with low colour intensity.

Exclusive technologies
  Smudge resistant Thanks top to the HSD Process™ smudges are much more repelled from the surface pf the lens and smudge resistance is improved. HSD process
  Scratch resistant The SR Booster™ layer creates a gradual increase of hardness for the ultimate performance on scratch resistance. SR Booster
  Dust repellence The i-technology™ allows perfect integration of the anti-static layer. Lenses are thus virtually free of dust. i-technology
  Water repellence The Slide Fx™ measures the hydrophobic performance of the lens. The lower the sliding angle needed to make the droplet slide, the higher the water repellence performance. i-technology

Two Year Consumer Guarantee Against Scratching and Manufacturing Defects

Essilor is the first manufacturer in the UK to offer a guarantee against scratches on AR coated lenses. Crizal Forte lenses come with a special two year guarantee which covers scratching and manufacturing defects.