We propose a new type of a wavefront aberration sensor, that is, a Zernike matched multichannel diffractive optical filter, which performs consistent filtering of phase distributions corresponding to Zernike polynomials. The sensitivity of the new sensor is theoretically estimated. Based on the theory, we develop recommendations for its application. Test wavefronts formed using a spatial light modulator are experimentally investigated. The applicability of the new sensor for the fine-tuning of a laser collimator is assessed.
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http://dx.doi.org/10.3390/s20143850 | DOI Listing |
Transl Vis Sci Technol
January 2025
The Ohio State University College of Optometry, Columbus, OH, USA.
Purpose: Individuals with Down syndrome (DS) have reduced visual acuity (VA), even when wearing refractive correction. The relationship between refractive error and VA in adults with DS is explored.
Methods: Thirty adults with DS (age = 29 ± 10 years) were enrolled in a trial comparing clinical and objectively determined refractions.
Optom Vis Sci
January 2025
School of Optometry, Indiana University, Bloomington, Indiana.
Significance: Visual acuity (VA) depends on many factors. When the goal is to assess retinal health rather than performance, then using a 3-mm pupil reduces unwanted wavefront aberrations. The axis of astigmatism can still potentially change with age.
View Article and Find Full Text PDFRegulating the proportion of low-order aberrations within total aberrations can effectively alter the tilt-to-length (TTL) coupling noise in a space gravitational wave telescope. Nevertheless, the low-order aberration ratio is disrupted during the actual manufacturing of the telescope. To address this issue, we analyzed the impacts of wavefront errors and low-order aberration proportions on the TTL coupling noise, determined the design requirements, and designed a 400 mm-aperture space gravitational wave telescope optical system.
View Article and Find Full Text PDFDue to their advantages of compact geometries and lightweight, diffractive optical elements (DOEs) are attractive in various applications such as sensing, imaging and holographic display. When designing DOEs based on algorithms, a diffraction model is required to trace the diffracted light propagation and to predict the performance. To have more precise diffraction field tracing and optical performance simulation, different diffraction models have been proposed and developed.
View Article and Find Full Text PDFAdaptive optics (AO) improves the spatial resolution of microscopy by correcting optical aberrations. While its application has been well established in microscopy modalities utilizing a circular pupil, its adaptation to systems with non-circular pupils, such as Bessel-focus two-photon fluorescence microscopy (2PFM) with an annular pupil, remains relatively uncharted. Herein, we present a modal focal AO (MFAO) method for Bessel-focus 2PFM.
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