Results 101 to 110 of about 1,162,754 (127)

Random generation of the turbulence slopes of a Shack-Hartmann wavefront sensor

, 2016
A method to generate the turbulence measurements of a Shack-Hartmann wavefront sensor is presented. Numerical simulations demonstrate that the spatial and temporal statistic properties of the slopes are respected, allowing us to generate the turbulence ...
Conan, Rodolphe
core   +1 more source

Implementation and benchmarking of a crosstalk-free method for wavefront Zernike coefficients reconstruction using Shack-Hartmann sensor data

, 2018
In wavefront characterization, often the combination of a Shack-Hartmann sensor and a reconstruction method utilizing the Cartesian derivatives of Zernike circle polynomials (the least-squares method, to be called here Method A) is used, which is known ...
P. Pozzi (3850216), A. J. E. M. Janssen (17493099), R. S. Beisheuvel (17493096), S. F. Pereira (3969956)   +3 more
core   +1 more source

Compact Fundus Imaging System Using Shack-Hartmann Wavefront Sensing for High-speed Auto-focus

Shengwu huaxue yu shengwu wuli jinzhan
ObjectiveThe widespread adoption of portable fundus cameras for primary care and community screening is hindered by limitations in current autofocus(AF) technologies.
LIN Zhe-Kai, CHEN Long, ZHENG Geng-Yong, HUANG Jin-Tian, DONG Jia-Xin, YANG Shang-Pan, DING Wen-Zheng, HAN Ding-An, WANG Xue-Hua, ZENG Ya-Guang   +9 more
doaj   +1 more source

Shack-Hartmann wavefront-sensor-based adaptive optics system for microscopy

, 2010
The imaging depth of two-photon excitation fluorescence microscopy is partly limited by the inhomogeneity of the refractive index in biological specimens. This inhomogeneity results in a distortion of the wavefront of the excitation light. This wavefront
Cha, Jae Won, Jerome Ballesta, Peter T. C. So, So, Peter T. C., Ballesta, Jerome, Jae Won Cha   +5 more
core   +1 more source

ONLINE SURFACE MEASUREMENT WITH DIGITAL SHACK–HARTMANN WAVEFRONT SENSOR

, 2010
Shack–Hartmann wavefront sensor splits the incident wavefront into many subsections and transfers the distorted wavefront detection into the centroid measurement. The accuracy of the centroid measurement determines the accuracy of the SHWS.
XIANG LI, ZHONGPING FANG, LIPING ZHAO, XIAOMING YIN   +3 more
core   +1 more source

Wavefront subaperture stitching with Shack-Hartmann sensor

, 2015
A new approach for large field of view measurement using the Shack-Hartmann wavefront sensor (SHWS) is proposed. The object to be measured is divided into several subaperture units.
Li, Hongru, Feng, Guoying, Sun, Jianfei, Hongru Li, Guoying Feng, Asundi, Anand, Bourgade, Thomas, Anand Asundi, Shouhuan Zhou, Jianfei Sun, Zhou, Shouhuan, Thomas Bourgade   +11 more
core   +1 more source

Estimation of the total error of modal wavefront reconstruction with Zernike polynomials and Hartmann-Shack test

, 2005
The paper discusses the influence of the Hartmann-(Shack) wavefront sensor geometry on the total error of modal wavefront reconstruction. A mathematical model is proposed which describes modal wavefront reconstruction based on Hartmann or Hartmann-Shack ...
Vdovin, G. (author), Soloviev, O. (author), Soloviev, O., Vdovin, G.   +3 more
core   +1 more source

Digital Shack-Hartmann wavefront sensing

, 2005
Wavefront sensor is designed to measure both intensity distribution and phase distortion of optical fields in real time and high accuracy. It can be widely used not only in measuring, diagnostic, but also in adaptive opticaI systems to compensate for ...
Rinov Herawan.
core  

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Wavefront Aberration Sensor Based on a Multichannel Diffractive Optical Element

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