Mutifocal diffractive lenses are generally designed with concentric annular zones comprising blazed steps of equal area. The compositions solve the problem of hydrocarbon pollution. The partition also includes one or several stiffener elements.
Algorithmically generated prior art
Mutifocal diffractive lenses are generally designed with concentric annular zones comprising blazed steps of equal area. The compositions solve the problem of hydrocarbon pollution. The partition also includes one or several stiffener elements.