Vision Ease Lens and Carl Zeiss Vision have signed a...

Vision Ease Lens and Carl Zeiss Vision have signed a royalty-bearing license agreement for freeform lens technology, under Carl Zeiss Vision International's U.S. patent number 6,089,713 and Australian patent number 739,849. The patents cover certain types of back-surface freeform progressive lenses and processes that are used to make them. These ...

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