Preliminary results of the implementation of a low-cost Shack-Hartmann wavefront sensor

Magaña-Chávez, José Luis; Serrano-García, David I.; Cervantes-L, Joel; Balderas-Mata, Sandra Eloísa

doi:10.1117/12.2633186

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…This process is shown in Figure 3. The Shack-Hartmann wavefront sensor prototype used in this work was developed and programmed by J. L. Magaña et al 16 It is based in Python 3 and is written using the representation of Zernike polynomials in Cartesian coordinates, see Table 1.…”

Section: Methodsmentioning

confidence: 99%

Zernike polynomials vs circular Bessel functions to represent aberrated wavefronts

Medina Coca,

Sánchez Valencia,

González Díaz

et al. 2023

Unconventional Imaging, Sensing, and Adaptive Optics 2023

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This research presents an alternative method to represent aberrated wavefronts based on circular Bessel functions. These wavefronts are obtained by means of a Shack-Hartmann wavefront sensor prototype, which was previously statistical validated according to the official Mexican standard. We show experimental results obtained from two wavefronts aberrated by two ophthalmic trial lenses; one of them has a spherical aberration of -1.0 diopter and the other one has a defocus aberration of +1.0 diopter. Both wavefronts are shown in terms of circular Bessel functions and compared with their corresponding representation in Zernike polynomials.

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Section: Methodsmentioning

confidence: 99%

Zernike polynomials vs circular Bessel functions to represent aberrated wavefronts

Medina Coca,

Sánchez Valencia,

González Díaz

et al. 2023

Unconventional Imaging, Sensing, and Adaptive Optics 2023

View full text Add to dashboard Cite

show abstract

“…The software is based in Python 3 programming language of high range and an OpenCV library was added for image processing. 9 The graphical interface of the program was developed with the PySimpleGUI library11, which helps to save the reference spot matrix as well as the displaced spot matrix of the deviations due to the introduced aberration. Both matrices are used to calculate the 15 Zernike polynomials for each of the measurements.…”

Section: Softwarementioning

confidence: 99%

“…6,7 Over time many wavefront analyzers known as aberrometers have been developed to detect ophthalmic wavefront aberrations. 8 The purpose of this work is a statistical characterization of a Shack-Hartmann wavefront sensor prototype, which was developed by Jose L. Magaña et al, 9 The characterization is made by using the official Mexican standard NMX-CH 5725/2-IMNC-2006 10 to determine the repeatability and reproducibility of the measurements, i.e., Zernike polynomials. This characterization is needed to determine if the Shack-Hartmann wavefront sensor prototype can be used in an experimental aberrometer.…”

Section: Introductionmentioning

confidence: 99%

Characterization of a Shack-Hartmann type wavefront sensor for its use in an experimental aberrometer

Medina Coca,

Sánchez Valencia,

Diaz Gonzalez

et al. 2023

Infrared Sensors, Devices, and Applications XIII

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The aim of this work is the characterization of a Shack-Hartmann wavefront sensor prototype through a statistical analysis in accordance with the official Mexican standard. To determine the repeatability and reproducibility of ophthalmic aberration measurements, given in Zernike polynomials, a measurement protocol was proposed. The measurements were obtained using an experimental optical system, which uses a super luminescent diode (SLD) IR, as well as ophthalmic trial lenses to introduce optical aberrations, which are used as reference materials. The complete optical system is intended to be used as an experimental aberrometer to obtain low order aberrations of the human eye in vivo.

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Preliminary results of the implementation of a low-cost Shack-Hartmann wavefront sensor

Cited by 2 publications

References 4 publications

Zernike polynomials vs circular Bessel functions to represent aberrated wavefronts

Zernike polynomials vs circular Bessel functions to represent aberrated wavefronts

Characterization of a Shack-Hartmann type wavefront sensor for its use in an experimental aberrometer

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