Phase retardation of the uniform-intensity axilens

Sochacki, Jacek; Bará, Salvador; Jaroszewicz, Zbigniew; Kołodziejczyk, Andrzej

doi:10.1364/ol.17.000007

Cited by 99 publications

(36 citation statements)

References 2 publications

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“…As discussed below, there is an increase in the width of the PSF with a consequent reduction in axial intensity, as indicated by the scaling parameters in the f igure. Logarithmic f ilters (LFs) were previously reported 8,13 ; however, contrary to our approach, the derivation of such filters was mainly achieved from geometric-optics considerations without including diffraction effects.…”

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confidence: 97%

Phase pupil functions for reduction of defocus and spherical aberrations

2003

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Radially symmetric pupil plane phase retardation functions are derived that extend focal depth and alleviate third-order spherical aberration (SA) effects. The radial symmetry of these functions means that they can be more conveniently manufactured by use of traditional techniques such as diamond machining than previously reported filters with rectangular symmetry. The method employs minimization of the variation of Strehl ratio with defocus, W 20 , and SA, W 40 . The performance of the derived phase filters is illustrated by comparison with standard optical systems and with previously reported phase filters.

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confidence: 97%

Phase pupil functions for reduction of defocus and spherical aberrations

2003

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“…In this section we evaluate an optical performance of a variety of Proframmable DOEs with EDOF such as: the Forward Logarithmic Axicon (FLAX) [9], the Axilens (AXL) [10], the Light Sword Optical Element (LSOE) [11], the Peacock Eye Optical Element (PE) [16] and Double Peacock Eye Optical Element (DPE) [4]. These elements illustrate a potential applicability as EDOF imaging components for presbyopia compensation.…”

Section: Programmable Diffractive Optical Elements For Extending the mentioning

confidence: 99%

“…Figure 13(b) shows the geometrical parameters and distribution of rays for an axilens illuminated by a plane wave of wavelength l and Figure 14(b) shows the resulting phase distribution of this DOE represented in grey levels. The transmittance function of the axilens can be written [10] as t r…”

Section: Axilens Optical Elements (Axl)mentioning

confidence: 99%

“…The modification should lead to output images characterized by the possible highest contrast, brightness and sharpness. Among the most important of these elements we present the Axicon [9], the Axilens (AXL) [10], the Light Sword Optical Element (LSOE) [11], and the Peacock Eye (PE) [4,12]. Moreover, there are works that have shown the advantages of these optical elements as an alternative solution to the compensation of ophthalmic aberrations in aged human vision [4].…”

Section: Introductionmentioning

confidence: 99%

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Programmable Diffractive Optical Elements with Applicability in Ophthalmic Optics

Romero¹,

Millán²

2017

Opt. Pura Apl.

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ABSTRACT:This paper presents results of the research related with the development of the doctoral thesis of Lenny Alexandra Romero Pérez. This work covers the design, the characterization and the analysis of several programmable diffractive optical elements (PDOEs) such as: Fresnel lenses, multifocal lenses, integrated combinations of phase-masks with lenses, and DOEs with extended depth of focus (EDOF) like the Light Sword optical element and the Peacock Eye. This has been pursued to address several problems of human vision, like myopia, hyperopia, astigmatism, and presbyopia, by means of the implementation of such DOEs on a Holoeye Liquid Crystal on Silicon HEO 1080P spatial light modulator. We have developed and implemented several algorithms for generating the necessary optical elements to compensate the different ametropies. Simulation and experimental results demonstrate that several of the considered DOEs have the sufficient imaging performance and thus the potential for compensating ametropies and presbyopia.Key words: extended depth of focus, diffractive optical elements; ophthalmic optics, visual optics, spatial light modulator. RESUMEN:Este trabajo presenta resultados de la investigación enmarcada en la tesis doctoral realizada por la doctora Lenny Alexandra Romero Pérez, la cual fue enfocada en el diseño, caracterización y análisis de diversos elementos ópticos difractivos programables (PDOEs por sus siglas en inglés) programables tales como: lentes de Fresnel, lentes multifocales, combinaciones integradas de máscaras de fase con lentes y elementos con capacidad de extender la profundidad de foco (EDOF del inglés, extended depth of focus), como los elementos difractivos llamados espada de luz y ojo de pavo. Esta tesis busca solventar por medio del uso de DOEs en un modulador espacial de luz diversos problemas de la visión humana, como la miopía, hipermetropía, astigmatismo y la presbicia. La implementación se llevó a cabo en un modulador Holoeye LCoS (del inglés Liquid Crystal on Silicon) de 1080P. Se han desarrollado e implementado distintos algoritmos para la generación de los elementos ópticos necesarios para la compensación de las ametropías. Los resultados obtenidos mediante pruebas de simulación y experimentación permiten contrastar las propiedades de los DOEs analizados y destacar aquellos que por su funcionalidad en la compensación de ametropías pueden alcanzar una mayor aplicabilidad. En este artículo presentamos los resultados más relevantes obtenidos en esta investigación.Palabras clave: elementos ópticos difractivos programables, profundidad de foco extendido, óptica oftálmica, óptica visual, modulador espacial de luz. REFERENCES AND LINKS / REFERENCIAS Y ENLACES[1] V. Laude, "Twisted-nematic liquid-crystal pixelated active lens," Opt. Commun. 153, 134-152, (1998 [10] J. Sochacki, S. Bara, Z. Jaroszewicz, and A. Kołodziejczyk, "Phase retardation of the uniform-intensity axilens," Opt. Lett. 17, 7-9, (1992).https://doi.org/10.1364/OL.17.000007[11] A. Kołodziejczyk, S. Bará, Z. Jaroszewicz...

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“…Continuous phase filters [2][3][4] and binaryphase filters [5][6][7] can also enhance the DOF. They are usually considered as energy efficient compared to amplitude filters.…”

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confidence: 99%