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PSEUDO-ACCOMODATIVE IOL HAVING DIFFRACTIVE ZONES WITH VARYING AREAS
专利权人:
发明人:
申请号:
EP07763097.8
公开号:
EP1982229B1
申请日:
2007.02.09
申请国别(地区):
EP
年份:
2015
代理人:
摘要:
In one aspect of the invention, a trifocal ophthalmic lens is disclosed that includes an optic having at least one optical surface, and a plurality of diffractive zones that are disposed on a portion of that surface about an optical axis of the optic. At least two of those diffractive zones have different areas so as to cause broadening of optical energy profiles at a near and a far foci of the diffractive zones for generating an intermediate focus.
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中国工程科技知识中心
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