Invention Grant
- Patent Title: Pupil dependent diffractive lens for near, intermediate, and far vision
- Patent Title (中): 瞳孔依赖衍射镜用于近,中,远视力
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Application No.: US13919798Application Date: 2013-06-17
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Publication No.: US09304329B2Publication Date: 2016-04-05
- Inventor: Huawei Zhao
- Applicant: Abbott Medical Optics Inc.
- Applicant Address: US CA Santa Ana
- Assignee: Abbott Medical Optics Inc.
- Current Assignee: Abbott Medical Optics Inc.
- Current Assignee Address: US CA Santa Ana
- Agency: Abbott Medical Optics Inc.
- Main IPC: G02C7/06
- IPC: G02C7/06 ; G02C7/04 ; A61F2/16 ; G02B5/18

Abstract:
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.
Public/Granted literature
- US20130278891A1 PUPIL DEPENDENT DIFFRACTIVE LENS FOR NEAR, INTERMEDIATE, AND FAR VISION Public/Granted day:2013-10-24
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