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Optom Vis Sci. 1993 Jun;70(6):461-8.

Diffractive bifocal lens designs.

Abstract

Modifying the number, width, depth, and shape of the echelettes in a diffractive bifocal lens will influence the image intensity and quality within the zero, first, and higher order images. By appropriately varying these parameters optimal bifocal lens designs may be achieved.

PMID:
8336907
[PubMed - indexed for MEDLINE]
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