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MULTI-FOCAL OPTICAL LENS, AND MANUFACTURING METHOD FOR SAME
专利权人:
MENICON CO.; LTD.
发明人:
ANDO, ICHIRO,SUZUKI, HIROAKI,KOBAYASHI, ATSUSHI
申请号:
EP13746957
公开号:
EP2813882A4
申请日:
2013.02.06
申请国别(地区):
EP
年份:
2015
代理人:
摘要:
In order to reduce halos that occur in multifocal ophthalmic lenses, the mechanism of the phenomenon was elucidated and a solution was found based on the results. Thus provided are a multifocal ophthalmic lens having a novel structure and a manufacturing method for the same which can effectively reduce halos. A multifocal ophthalmic lens having a focal point formation region (28) provided to an optical portion (12) of a lens (10), which forms at least two focal points, wherein a cancellation region (30) is provided to the optical portion (12), the cancellation region (30) providing diffracted light of an amplitude distribution that reduces, on the image plane of the first focal point among the focal points, the amplitudes of light other than the light that forms the first focal point.
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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