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MULTIFOCAL OPHTHALMIC LENS HAVING CHROMATIC ABERRATION CORRECTION
专利权人:
Novartis AG
发明人:
Xin Hong,Xin Wei
申请号:
US15498836
公开号:
US20180311034A1
申请日:
2017.04.27
申请国别(地区):
US
年份:
2018
代理人:
摘要:
An ophthalmic lens includes an optic comprising an anterior surface, a posterior surface, and an optical axis. At least one of the anterior surface and the posterior surface has a surface profile including a base curvature, a refractive region having the base curvature, and a diffractive region comprising a diffractive profile including a plurality of diffractive steps. At least a portion of the diffractive profile constitutes a combination of a base diffractive profile defining multiple foci for the ophthalmic lens and an achromatizing structure that reduces longitudinal chromatic aberrations.
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