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For eye care professionals

Crizal Sapphire UV research

Thinking about AR coatings completely different.

Crizal Sapphire UV is a product that could not exist without our unique consumer needs research process. We took into account how reflections are influenced by wearer' needs and real-life conditions.
 
 

Research process

From selfie interviews to data samples


We initially listened to a multitude of selfie videos and web videos where consumers explained their situations and how they find reflections bothersome. We complemented this primary research with qualitative studies and wearer tests.

Reflections cause wearers to change their visual solutions.

Our research lead us to one core finding. Back surface reflections, optical diffusion caused by smudges or scratches and ghost images induced by multi-reflections within lenses can lead to increased visual discomfort. This could lead to wearers adopting new postures which are bothersome and physical discomfort. Some wearers even resort to removing their eyewear.

Person driving experiencing glare and ghost images at night.
 
 

Discovery

Reflections occur on both surfaces of the lens


More than 80% of invasive light reflections occur in doors. We discovered this is caused by both lens surfaces. 


Front surface relfections

For an object in front of the wearer, light is reflected first on the front surface of the lens, but also on the back surface after going through the lens.


Back surface reflections

The same phenomenon occurs on the back of the lens with a light source that is located behind the wearer.

 

A new approach

Looking at coatings from a 360° view.


After studying and analysing indoor and outdoor lighting environements and how they interact with consumer lifestyles we realised a new anti-reflecting approach was needed.

AR coatings have been limited to one light direction.

Until now anti-reflective coatings were designed to be efficient around the normal incidence direction. This configuration doesn’t match real-life situations because reflections are only considered in a narrow angular range – lateral and back reflections are not taken into account.

Anti-reflective coatings have been designed to be efficient around the normal incidence direction
Crizal Sapphire is the first anti-reflective lens coating designed to reduce reflections whatever the light incidence angle

The first AR coating to reduce reflections from what ever the light direction

We designed Crizal Sapphire UV to reduce reflections whatever the light incidence angle, both on front and back surfaces of the lens. This is a first in AR technology.

Technology

Discover the technology which powers Crizal Sapphire UV

Learn more
 

Resources

Crizal Sapphire UV research white paper

Discover the white paper authored by Point De Vue on the research behind multi-angular reflections with Crizal Sapphire UV

Download now

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