The intraocular lens based on Dammann zone plate

Junjie Li; Changhe Zhou; Jin Wang

doi:10.1117/12.2536484

18 November 2019 The intraocular lens based on Dammann zone plate

Junjie Li, Changhe Zhou, Jin Wang

Proceedings Volume 11188, Holography, Diffractive Optics, and Applications IX; 111880W (2019) https://doi.org/10.1117/12.2536484
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

Nowadays, more and more people worldwide suffer from cataracts, an eye disease. The intraocular lens is a precise optical component, which can be implanted into the eyes through the surgery to replace the turbid lens of eyes with the target of providing good vision correction for many cataract patients. Scientists have developed many types of intraocular lenses for correcting vision of cataract patients, but many of them have slightly poor imaging effect because of fewer axial focal points. Dammann zone plate is a very useful optical element, which is formed by introducing the phase modulation of Dammann grating into Fresnel zone plate. The characters of Dammann zone plate enable it to produce a series of axial focal spots distribution with equal intensity in a certain range. In this paper, we introduced Dammann zone plate into the traditional intraocular lens and designed a kind of intraocular lens. And we mainly researched the focusing depth and imaging effect. We find that the intraocular lens with deeper focal depth and better imaging effect can be obtained by the optimal combination of the two parts. This multifocal intraocular lenses enable both the near and far objects to focus on the retina. With the Dammann zone plate, the intraocular lens has deeper focal depth, which allows those cataract patients to get a better visual clarity and can provides better visual quality for them. Therefore, this design has a wide prospect for the treatment of cataract in the future.

Citation Download Citation

Junjie Li, Changhe Zhou, and Jin Wang "The intraocular lens based on Dammann zone plate", Proc. SPIE 11188, Holography, Diffractive Optics, and Applications IX, 111880W (18 November 2019); https://doi.org/10.1117/12.2536484

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