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US20100066973A   [0012] 
US12415742B   [0073] 

Switchable electro-optic diffractive lens with high efficiency for ophthalmic application   [0005] 
Spectral properties of multiorder diffractive lenses   [0007] 
Light distribution in diffractive multifocal optics and its optimization   [0009] 
New Bi-Sign Aspheric IOL and its Applications   [0073]