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Pupil dependent diffractive lens for near, intermediate, and far vision
专利权人:
Abbott Medical Optics Inc.
发明人:
Huawei Zhao
申请号:
US13919798
公开号:
US09304329B2
申请日:
2013.06.17
申请国别(地区):
US
年份:
2016
代理人:
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.
来源网站:
中国工程科技知识中心
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