USE OF A MULTIFOCAL BI-REFRINGENT LENS WITH MATCHED BI-REFRINGENCE

摘要

we describe a multifocal birefringent lens system and having at least two different refractive indices for optical applications.all lenses of the lens system are made in a birefringent polymer whose birefringence is determined by drawing appropriate, in such a way that a single lens made of the polymer has two different refractive indices.