HOLMSTRÖM, Sven Thage Sigvard,ÇIM, Isa,UREY, Hakan
申请号：
AU2018308827
公开号：
AU2018308827A1
申请日:
2018.07.17
申请国别(地区):
AU
年份:
2020
代理人:
摘要：
An ophthalmic multifocal lens, and a method of manufacturing same, at least comprising focal points for near, intermediate and far vision. The lens comprises a light transmissive lens body providing a refractive focal point(164), and a periodic light transmissive diffraction grating, extending concentrically over at least part of a surface of the lens body and providing a set ofdiffractive focal points(162, 63). The diffraction grating is designed to operate as an optical wave splitter, the refractive focal point providing the focal point for intermediate vision (164) and the diffractive focal points providing the focal points for near (163) and far vision(162). The diffraction grating has an optical transfer function (160) comprising a continuous periodic phase profile function having an argument modulated as a function (165) of the radial distance (r) to the optical axis of the lens body, thereby tuning the light distribution in the focal points(162, 163, 164).
