PUPIL DEPENDENT DIFFRACTIVE LENS FOR NEAR, INTERMEDIATE, AND FAR VISION

摘要

A multifocal diffractive lens comprises a multifocal diffractive structure coupled to a refractive component. The refractive component comprises at least one curved surface. The multifocal diffractive structure comprises a first plurality of substantially monofocal echellettes having a first optical power for near vision correction and a second plurality of substantially monofocal echellettes for far vision correction. The first plurality of substantially monofocal echellettes combined with the second plurality of substantially monofocal echellettes can provide a multifocal diffractive profile having decreased light scatter, chromatic aberration, and diffraction to non-viewing orders such that dysphotopsia is substantially inhibited. A third plurality of substantially monofocal echellettes having an intermediate optical power can be combined with the first plurality of substantially monofocal echellettes and the second plurality of substantially monofocal echellettes.

主权项

1. A lens to correct vision of an eye, the lens comprising,
a refractive component comprising at least one curved surface; and a multifocal diffractive structure optically coupled to the at least one curved surface, the multifocal diffractive structure comprising a first plurality of substantially monofocal echellettes having a first optical power corresponding to a near vision correction of the eye and a second plurality of substantially monofocal echellettes having a second optical power corresponding to a far vision correction of the eye.