The semi-visible “Z” engraved onto each lens is a uniqueness of ZEISS products. This mark allows you to recognize the authenticity of the lens against imitations and it certifies the conformity to the highly restrictive ZEISS standards.

Our unique quality control procedure has introduced parameters and procedures used in the ophthalmic market, which are far more severe than the International Standards for sunglass lenses.

This means that every single piece marked with the “Z” satisfies all our requirements, including abrasion tests, optical and design tests, durability tests and inspection tests.

All to a higher level.

 

To verify if you are wearing an original Zeiss Sunlens put your sunglass under a light source And look for the engraved ‘Z’ on each lens of your sunglasses (temporal zone).

Please also check here below if your sunglass has been certified by ‘Zeiss Sunlens Certification Laboratory’:
Frame Model
 

Verify your lens now

[From january 2007]