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Adjustable hybrid diffractive/refractive achromatic lens
We demonstrate a variable focal length achromatic lens that consists of a flat liquid crystal diffractive lens and a pressure-controlled fluidic refractive lens. The diffractive lens is composed of a flat binary Fresnel zone structure and a thin liquid crystal layer, producing high efficiency and mi...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Optical Society of America
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3368326/ https://www.ncbi.nlm.nih.gov/pubmed/21503055 http://dx.doi.org/10.1364/OE.19.007468 |
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author | Valley, Pouria Savidis, Nickolaos Schwiegerling, Jim Dodge, Mohammad Reza Peyman, Gholam Peyghambarian, N. |
author_facet | Valley, Pouria Savidis, Nickolaos Schwiegerling, Jim Dodge, Mohammad Reza Peyman, Gholam Peyghambarian, N. |
author_sort | Valley, Pouria |
collection | PubMed |
description | We demonstrate a variable focal length achromatic lens that consists of a flat liquid crystal diffractive lens and a pressure-controlled fluidic refractive lens. The diffractive lens is composed of a flat binary Fresnel zone structure and a thin liquid crystal layer, producing high efficiency and millisecond switching times while applying a low ac voltage input. The focusing power of the diffractive lens is adjusted by electrically modifying the sub-zones and re-establishing phase wrapping points. The refractive lens includes a fluid chamber with a flat glass surface and an opposing elastic polydimethylsiloxane (PDMS) membrane surface. Inserting fluid volume through a pump system into the clear aperture region alters the membrane curvature and adjusts the refractive lens’ focal position. Primary chromatic aberration is remarkably reduced through the coupling of the fluidic and diffractive lenses at selected focal lengths. Potential applications include miniature color imaging systems, medical and ophthalmic devices, or any design that utilizes variable focal length achromats. |
format | Online Article Text |
id | pubmed-3368326 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Optical Society of America |
record_format | MEDLINE/PubMed |
spelling | pubmed-33683262012-10-01 Adjustable hybrid diffractive/refractive achromatic lens Valley, Pouria Savidis, Nickolaos Schwiegerling, Jim Dodge, Mohammad Reza Peyman, Gholam Peyghambarian, N. Opt Express Research-Article We demonstrate a variable focal length achromatic lens that consists of a flat liquid crystal diffractive lens and a pressure-controlled fluidic refractive lens. The diffractive lens is composed of a flat binary Fresnel zone structure and a thin liquid crystal layer, producing high efficiency and millisecond switching times while applying a low ac voltage input. The focusing power of the diffractive lens is adjusted by electrically modifying the sub-zones and re-establishing phase wrapping points. The refractive lens includes a fluid chamber with a flat glass surface and an opposing elastic polydimethylsiloxane (PDMS) membrane surface. Inserting fluid volume through a pump system into the clear aperture region alters the membrane curvature and adjusts the refractive lens’ focal position. Primary chromatic aberration is remarkably reduced through the coupling of the fluidic and diffractive lenses at selected focal lengths. Potential applications include miniature color imaging systems, medical and ophthalmic devices, or any design that utilizes variable focal length achromats. Optical Society of America 2011-04-04 /pmc/articles/PMC3368326/ /pubmed/21503055 http://dx.doi.org/10.1364/OE.19.007468 Text en ©2011 Optical Society of America http://creativecommons.org/licenses/by-nc-nd/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License, which permits download and redistribution, provided that the original work is properly cited. This license restricts the article from being modified or used commercially. |
spellingShingle | Research-Article Valley, Pouria Savidis, Nickolaos Schwiegerling, Jim Dodge, Mohammad Reza Peyman, Gholam Peyghambarian, N. Adjustable hybrid diffractive/refractive achromatic lens |
title | Adjustable hybrid diffractive/refractive achromatic lens |
title_full | Adjustable hybrid diffractive/refractive achromatic lens |
title_fullStr | Adjustable hybrid diffractive/refractive achromatic lens |
title_full_unstemmed | Adjustable hybrid diffractive/refractive achromatic lens |
title_short | Adjustable hybrid diffractive/refractive achromatic lens |
title_sort | adjustable hybrid diffractive/refractive achromatic lens |
topic | Research-Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3368326/ https://www.ncbi.nlm.nih.gov/pubmed/21503055 http://dx.doi.org/10.1364/OE.19.007468 |
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