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LENTILLE MULTIFOCALE PRESENTANT DES PERTURBATIONS VISUELLES REDUITES
专利权人:
NOVARTIS AG
发明人:
CHOI, MYOUNG-TAEK,LIU, YUEAI,HONG, XIN
申请号:
CA3008217
公开号:
CA3008217A1
申请日:
2017.02.15
申请国别(地区):
CA
年份:
2017
代理人:
摘要:
A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens (110) having an anterior surface (112), a posterior surface (114), at least one diffractive structure (120) and at least one base curvature (130). The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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