[This corrects the article DOI: 10.1098/rsos.172465.].
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6227936 | PMC |
| http://dx.doi.org/10.1098/rsos.181541 | DOI Listing |
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Corrigendum to "A customizable digital holographic microscope" [HardwareX 19 (2024) e00569].
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December 2024
Department of Physics, University of Milan, Milan, Italy.
[This corrects the article DOI: 10.1016/j.ohx.
View Article and Find Full Text PDFNon-contact lensless holographic reconstruction of diffractive intraocular lenses profiles.
Sci Rep
January 2025
Faculty of Physics, Department of Optics and Optometry and Vision Sciences, Universitat de València, Burjassot, Spain.
A lensless compact arrangement based on digital in-line holography under Gabor's regime is proposed as a novel contactless method to assess the profile of multifocal intraocular lenses (MIOLs) which are conformed by several diffractive rings. Diffractive MIOLs are a widely adopted ophthalmologic option for the correction of presbyopia in patients undergoing cataract surgery. The MIOL optical design might introduce non-negligible optical performance differences between lenses as well as the introduction of undesirable photic phenomena (such as halos and glare) affecting the vision of users.
View Article and Find Full Text PDFThe emergence of metasurfaces provides a secure and efficient platform for optical encryption technology as they have broad prospects in the field of information security. However, the limited number of channels available on metasurfaces and the insufficient security of keys make them vulnerable to attacks by eavesdroppers. In this work, a reprogrammable metasurface optical encryption scheme based on a three-dimensional hyperchaotic system is proposed.
View Article and Find Full Text PDFDigital holographic microscopy retrieves amplitude and phase information of an image which allows us to computationally correct for imperfections in the imaging optics. However, digital holographic microscopy is an interferometric technique that is inherently sensitive to undesired phase variations between object and reference beam. These phase variations lower the fringe contrast if they are integrated over a finite exposure time which leads to a reduced amplitude of the retrieved image.
View Article and Find Full Text PDFWe introduce a concept of aberration correction under microscopy that is based on observation of circular Brownian motion of an object driven by orbital angular momentum of a Laguerre-Gaussian (LG) beam. Following the concept, we establish an aberration-correction scheme by using a holographic optical tweezers setup equipped with a spatial light modulator that produces the LG beam as well as corrects the light wavefront. The light wavefront is modified adaptively to improve circular symmetry and uniformity of the orbit of a colloidal dielectric sphere revolving in mid-water under the irradiation of the LG beam.
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