Zeiss PhotoFusion and Polarising technology

Zeiss PhotoFusion

Are you looking for a new, favourite pair of glasses?
Ones that will give you better vision day and night?
With self-tinting lenses that will give you 100% protection from the sun and harmful UV rays and will do away with having to change back to your conventional glasses?

As of now, ZEISS is also offering the latest generation of self-tinting lenses in the well-known ZEISS quality. And the best thing is that the photochromic PhotoFusion® lenses react faster than ever before to changes in light conditions.

In just 15 to 30 seconds, PhotoFusion® eyeglass lenses will darken in bright light or in the sun. Indoors, they clear again in about 5 to 10 minutes. That's the reason why PhotoFusion® is a leader among self-tinting lenses. And of course, it offers 100% protection against solar UV rays.

Very dark, very clear.

PhotoFusion®, the new self-tinting lenses by ZEISS, offer optimum vision under all light conditions. Indoors there are no UV rays and therefore the lenses remain clear, no matter how brightly the sun shines outside. Outside when it is cloudy, molecules within the lens are exposed to some UV radiation and in response to this exposure they grow larger by unfolding themselves – making the lens turn semi-dark. In full sunshine these patented photo-active molecules are hit with the full intensity of UV rays making them unfold completely, darkening the lens to its maximum.

Zeiss Polarising technology

ZEISS Polarising technology allows you to see more, even in dazzling sunshine. Skiers, pilots and water sports enthusiasts are sold on them. However, these lenses are also excellent solutions for virtually anyone who wears glasses.

ZEISS Polarising technology reduces light reflection and mirror images created, for instance, by the sun’s rays as it hits wet road, pavement, water or metal surfaces. As a result, they protect you from eye fatigue because the eyes no longer have to attempt adjust to constantly changing light conditions. When you wear these lenses you tend to be a lot more relaxed and feel better about wearing glasses.

How does the polarisation principle work?

First and foremost, natural light is unpolarised light that vibrates in all directions. However, whenever a ray of light hits a smooth surface, i.e. when the sun encounters a wet road, the light is partially reflected by the water and guided in one direction. In other words, it is polarised:

The reflection creates an unpleasant blinding effect (glare) because of the polarised light – a safety risk not encountered when you wear lenses with polarisation filters. The polarisation filter is installed horizontally and does not allow the reflected vertically directed light to penetrate through it. Consequently, the hazardous reflections emitted by water surfaces and wet streets are almost completely eliminated:

Zeiss polarised lenses offer an additional bonus: 100% UV protection!