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Ophthalmic lens having an extended depth of focus
专利权人:
NOVARTIS AG
发明人:
Xin Hong,Zoran Milanovic,Xin Wei
申请号:
US15055993
公开号:
US09968440B2
申请日:
2016.02.29
申请国别(地区):
US
年份:
2018
代理人:
摘要:
In certain embodiments, an ophthalmic lens includes an optic having an anterior surface, a posterior surface, and an optical axis. At least one of the anterior surface and the posterior surface includes a first zone extending from the optical axis to a first radial boundary and a second zone extending from the first radial boundary to the edge of the optic. The first zone includes an inner region and an outer region separated by a phase shift feature, the phase shift comprising a ridge extending outwardly from the inner region and the outer region.
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