Lentille à réfraction-diffraction

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专利权人:

POLYMER TECHNOLOGIES INTERNATIONAL (EOU)

发明人:

申请号：

EP10152384.3

公开号：

EP2290411B1

申请日:

2010.02.02

申请国别(地区):

EP

年份:

2012

代理人:

摘要：

A multifocal lens device is disclosed. The device comprises a lens body being formed with a plurality of concentric annular zones separated by slanted steps. The concentric zones effect both diffraction and refraction of incident light, while the steps are substantially devoid of any diffractive or refractive power.

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中国工程科技知识中心

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