Results 11 to 20 of about 30,667 (264)

The Correction of Eye Wavefront Using Contact Lenses and Their Impact on the Accommodative Response

Российский офтальмологический журнал, 2018
Eye wavefront aberrations have a strong impact on the formation of an image on the retina and vision quality. A relationship has also been found between the aberrations and accommodation, which plays a significant role in visual performance and ...
E. P. Tarutta, S. G. Arutyunyan, S. V. Milash   +2 more
doaj   +2 more sources

Adaptive wavefront correction in two-photon microscopy using coherence-gated wavefront sensing [PDF]

Proceedings of the National Academy of Sciences, 2006
The image quality of a two-photon microscope is often degraded by wavefront aberrations induced by the specimen. We demonstrate here that resolution and signal size in two-photon microcopy can be substantially improved, even in living biological specimens, by adaptive wavefront correction based on sensing the wavefront of coherence-gated backscattered ...
Rückel, M., Mack-Bucher, J., Denk, W.
openaire   +8 more sources

Improved Wavefront Reconstruction and Correction Strategy for Adaptive Optics System With a Plenoptic Sensor

IEEE Photonics Journal, 2021
Wavefront reconstruction and correction under strong turbulence has become a crucial issue for adaptive optics systems. An approach using a plenoptic sensor has attracted high attention recently.
Jintian Hu, Tao Chen, Xudong Lin, Liang Wang, Qichang An, Zhichong Wang   +5 more
doaj   +1 more source

Adaptive Optical Closed-Loop Control on the Basis of Hyperparametric Optimization of Convolutional Neural Networks

Applied Sciences, 2023
In adaptive optics systems, the precision wavefront sensor determines the closed-loop correction effect. The accuracy of the wavefront sensor is severely reduced when light energy is weak, while the real-time performance of wavefront sensorless adaptive ...
Bo Chen, Yilin Zhou, Jingjing Jia, Yirui Zhang, Zhaoyi Li   +4 more
doaj   +1 more source

Highly Stable Spatio-Temporal Prediction Network of Wavefront Sensor Slopes in Adaptive Optics

Sensors, 2023
Adaptive Optics (AO) technology is an effective means to compensate for wavefront distortion, but its inherent delay error will cause the compensation wavefront on the deformable mirror (DM) to lag behind the changes in the distorted wavefront ...
Ning Wang, Licheng Zhu, Qiang Yuan, Xinlan Ge, Zeyu Gao, Shuai Wang, Ping Yang   +6 more
doaj   +1 more source

Correction: Dou et al. Performance Calibration of the Wavefront Sensor's EMCCD Detector for the Cool Planets Imaging Coronagraph Aboard CSST. <i>J. Imaging</i> 2025, <i>11</i>, 203. [PDF]

J Imaging
Dou J, Niu B, Zhao G, Zhang X, Wang G, Yuan B, Wang D, Qian X.   +7 more
europepmc   +3 more sources

Method for distortion correction of multi-layered surface reconstruction using time-gated wavefront sensing approach [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
In order to estimate the multi-layer surface profile and to detect the inter-layer surfaces defects, gated wavefront sensing approach has been proposed in the previous works [1, 2].
Tan C. S., Wang X., Ng Y. H., Lim W. K., Chai T. Y.   +4 more
doaj   +1 more source

Iterative linear focal-plane wavefront correction [PDF]

Journal of the Optical Society of America A, 2013
We propose an efficient approximation to the nonlinear phase diversity (PD) method for wavefront reconstruction and correction from intensity measurements with potential of being used in real-time applications. The new iterative linear phase diversity (ILPD) method assumes that the residual phase aberration is small and makes use of a first-order ...
Smith, C.S. (author), Marinica, R.M. (author), Den Dekker, A.J. (author), Verhaegen, M.H.G. (author), Korkiakoski, V. (author), Keller, C.U. (author), Doelman, N. (author)   +6 more
openaire   +5 more sources

Real-Time Correction of a Laser Beam Wavefront Distorted by an Artificial Turbulent Heated Airflow

Photonics, 2022
This paper presents a FPGA-based closed-loop adaptive optical system with a bimorph deformable mirror for correction of the phase perturbation caused by artificial turbulence.
Alexey Rukosuev, Alexander Nikitin, Vladimir Toporovsky, Julia Sheldakova, Alexis Kudryashov   +4 more
doaj   +1 more source

Impact of Pupil Aberrations on Wavefront Manipulation [PDF]

EPJ Web of Conferences, 2021
A systematic and quantitative analysis is given of the impact of pupil aberrations on the imaging performance in wavefront manipulation applications using adaptive optical elements.
Nobis Thomas
doaj   +1 more source