Light-Sensitive Coating for Sunglasses


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Prof. Valeri Krongauz
In the 1960s, Institute scientists discovered photochromism, a reversible change in the color of materials due to exposure to light. Following up on this research, Prof. Valeri Krongauz developed a very active photochromic polymer that could be used for producing light-sensitive coating on plastic lenses.


Chromtech, a company in Kiryat Weizmann, was established to make use of Krongauz’s research. It manufactures light-sensitive materials used as coating for sunglasses that darken when exposed to bright light.