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MULTIFOCAL INTRAOCULAR LENS WITH EXTENDED DEPTH OF FIELD
专利权人:
CARL ZEISS MEDITEC AG
发明人:
Sergio Oscar LUQUE
申请号:
US15514069
公开号:
US20170290657A1
申请日:
2015.09.23
申请国别(地区):
US
年份:
2017
代理人:
摘要:
Multifocal intraocular lens with extended depth of field that comprises, in at least one of the surfaces (2), a small zone with a multifocal profile with a defined optical axis (3) and, in the peripheral region and coaxial to the multifocal zone, a ring-shaped opaque mask (1) that partially or totally block light to produce a small aperture effect and, therefore, the multifocal profile has a radius equal or larger than the internal radius of the mask (1), and there is at least one transition between focal zones or one diffractive step inside the internal radius of the mask (1).
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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