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ZEISS PhotoFusion
ZEISS PhotoFusion

Optical Knowledge

Here you get background information on eyeglass lenses: Basics of ophthalmic optics, surface geometry and progressive lenses, lens materials, lens production and coatings.



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Optical Knowledge

Here you get background information on eyeglass lenses: Basics of ophthalmic optics, surface geometry and progressive lenses, lens materials, lens production and coatings.


ZEISS PhotoFusion®

The self-tinting lenses that react fast to changing light.

PhotoFusion® was created by ZEISS experts to meet consumers’ expectation of self-tinting lenses that darken and turn clear faster*. The introduction of PhotoFusion® in 2011 has revolutionized the market for these kinds of lenses.

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State-of-the-art technology for strong performance

Fast dark. Fast clear.

PhotoFusion® lenses adapt quickly to changing light conditions. The high- and mid-index lenses react up to 2 times faster* from dark to clear and up to 20% faster* from clear to dark than previous photochromic lenses by ZEISS.

  • Lenses darken to 15% T** in 15–30 seconds*
  • Lenses fade back to 70% T** in 5–10 minutes*

Comfortable vision.

Indoors the PhotoFusion® lenses are very clear whereas outside they turn very dark in the sunlight.

  • Clear state: 92% T**
  • dark state: 11% T**

T = transmission based on AR coated lenses.
* Source: Global consumer study for Carl Zeiss Vision International July 2010, based on national representative samples in US, Brazil, Germany, Italy, UK, Australia and China.
** Average performance for 1.67, 1.6 and polycarbonate self-tinting lenses. Performance will vary according to material, temperature and light conditions.


Benefits for the wearer

  • Convenience
    PhotoFusion® lenses adapt to changing light fast for more convenience in every day use.
  • Comfortable vision
    PhotoFusion® lenses are very clear indoors yet turn very dark outside in sunlight for excellent vision at all times.
  • Protection
    PhotoFusion® lenses provide 100% protection against harmful solar UV rays.
  • Durability
    PhotoFusion® lenses retain their self-tinting performance longer.
  • Color Consistency
    PhotoFusion® lenses show excellent colour consistency for an attractive appearance in any lens state.

Consumers say**:

  • 9 out of 10 consumers rate the vision quality of PhotoFusion® very good / good.
  • 4 out of 5 consumers are very satisfied / satisfied with PhotoFusion®.
  • 83% of the respondents would recommend PhotoFusion® to their friends or colleagues.

Opticians say***:

  • 95% evaluate the performance of PhotoFusion® as equal to or better than other self-tinting lenses.
  • 88% are very satisfied / satisfied with PhotoFusion® lenses.
  • 79% top sellers say that they experience greater patient satisfaction with PhotoFusion® lenses.

** Source: External consumer study, Germany, November 2012.
*** Source: External study with opticians, US, January 2013.

PhotoFusion® – a technical innovation

The secret behind PhotoFusion® technology is patented photo-active molecules that respond more efficiently to light energy, darkening up to 20% faster* than existing photochromic lenses by ZEISS and fading up to 2x faster*. By combining these molecules with lenses by ZEISS, it has been possible to design a new generation of powerful self-tinting lenses: PhotoFusion® by ZEISS.

A new level in wearing comfort
PhotoFusion® lenses by ZEISS incorporate the most important features customers would expect from self-tinting lenses. They represent another step forward in wearing convenience and comfort in a high-quality ZEISS product wearers can trust.

UV radiation & molecules
Self-tinting lenses contain molecules that react to UV rays. When hit by UV rays, these molecules are unleashed, thus darkening the lens – the more intensive the UV rays, the darker the lenses. Self-tinting lenses therefore adjust automatically to changing light conditions. And of course, whether the lenses are clear or dark, PhotoFusion® always provides 100 % solar UV protection.


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