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LENTILLE INTRAOCULAIRE AYANT UNE PROFONDEUR DE FOYER ETENDUE
专利权人:
TATVUM LLC
发明人:
TIWARI, NIVEDAN,VENKATESWARAN, KRISHNAKUMAR
申请号:
CA3041893
公开号:
CA3041893A1
申请日:
2017.11.15
申请国别(地区):
CA
年份:
2018
代理人:
摘要:
An intraocular lens, comprising an optic (100) having an anterior surface (102) and a posterior surface (104), providing a refractive base power, at least one of the anterior surface and the posterior surface having disposed thereon a profile (150) comprising steps having heights determined by combining three constituent diffractive profiles. The diffractive profiles correspond to powers pi, p2 and p3, the powers being different than one another and each power being a positive power less than about 1D or about 1.25D. Each of the diffractive profiles having step heights causing a phase delay, relative to aqueous fluid, of 0.6 to 1.2 times 2*pi for 546 nm light. The combined profile defined by the function: z = max (diffractive profile (pi), diffractive profile (p2), diffractive profile (p3)), where p3 >; p2 >; pi.
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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