Results 41 to 50 of about 5,726 (305)

Sixty-Nine-Element Voice Coil Deformable Mirror for Visible Light Communication

Photonics, 2023
To overcome the atmospheric turbulence aberration, and improve the quality of light beam in visible light communication (VLC), a compact 69-element deformable mirror (DM) using micro voice coil actuators was designed based on systematic theoretical ...
Lv Jiang, Lifa Hu, Qili Hu, Xingyu Xu, Jingjing Wu, Lin Yu, Yang Huang   +6 more
doaj   +1 more source

Mode-Voltage Constrained Control for Adaptive Optics System

IEEE Photonics Journal
In the adaptive optics system of astronomical observation, the deformable mirror and the tip/tilt mirror are coupled during the correction process.
Ruitao Wang, Youming Guo, Nanfei Yan, Ying Yang, Lanqiang Zhang, Qiong Tu, Lingxiao Li, Changhui Rao   +7 more
doaj   +1 more source

Novel unimorph deformable mirror for space applications [PDF]

, 2013
We have developed a new type of unimorph deformable mirror, designed to correct for low-order Zernike modes. The mirror has a clear optical aperture of 50 mm combined with large peak-to-valley Zernike amplitudes of up to 35 μm.
Verpoort, Sven, Rausch, Peter, Wittrock, Ulrich   +2 more
core   +1 more source

Adaptive Optical Closed-Loop Control Based on the Single-Dimensional Perturbation Descent Algorithm

Sensors, 2023
Modal-free optimization algorithms do not require specific mathematical models, and they, along with their other benefits, have great application potential in adaptive optics.
Bo Chen, Yilin Zhou, Zhaoyi Li, Jingjing Jia, Yirui Zhang   +4 more
doaj   +1 more source

Design and characterization of a vibrating piezo-membrane deformable mirror for adaptive optics application

, 2018
Recently, we proposed an inexpensive deformable mirror made of Poly-Vinylidene Fluoride-(PVDF), called Vibrating Membrane Mirror (VMM), to compensate for optical atmospheric aberrations [1, 2].
Lambert, Andrew, Tahtali, Murat, Hadipour, Mousa   +2 more
core   +1 more source

Early Clinical, Imaging, and Pathological Characteristics of SRPK3/TTN‐Digenic Myopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective SRPK3/TTN‐digenic myopathy was recently established as a skeletal muscle myopathy caused by digenic inheritance. This study characterizes the early clinical presentation of SRPK3/TTN‐digenic myopathy in one previously reported and seven newly identified pediatric patients.
Rotem Orbach, Sandra Donkervoort, Carola Hedberg‐Oldfors, Giovanni Baranello, Dimah Saade, Precilla D'Souza, Ruchee Patel, Eva Michael, A. Reghan Foley, Diana Bharucha‐Goebel, S. Jin Haugland, Meghan McAnally, Omer Abdul Hamid, Katherine Chao, Ellen F. Macnamara, Alan H. Beggs, Anna Sarkozy, Juliane Mueller, Steven A. Moore, Richard S. Finkel, Cynthia J. Tifft, Francesco Muntoni, Anders Oldfors, Carsten G. Bönnemann   +23 more
wiley   +1 more source

An active piezoelectric plane X-ray focusing mirror with a linearly changing thickness

Journal of Synchrotron Radiation
X-ray mirrors for synchrotron radiation are often bent into a curved figure and work under grazing-incidence conditions due to the strong penetrating nature of X-rays to most materials.
Naxi Tian, Hui Jiang, Jianan Xie, Shuai Yan, Dongxu Liang, Zhisen Jiang   +5 more
doaj   +1 more source

A Design Approach to Reducing Stress and Distortion Caused by Adhesive Assembly in Micromachined Deformable Mirrors

Micromachines, 2023
A common problem in deformable mirror assembly is that the adhesion of actuators to an optical mirror face sheet introduces unwanted topography due to large local stresses generated at the adhesive joint.
Wenkuan Man, Thomas G. Bifano
doaj   +1 more source

Artificial Intelligence in Systemic Sclerosis: Clinical Applications, Challenges, and Future Directions

Arthritis Care &Research, EarlyView.
Systemic sclerosis (SSc) is a rare autoimmune disease defined by immune dysregulation, vasculopathy, and progressive fibrosis of the skin and internal organs. Despite advances in care, major complications such as interstitial lung disease (ILD) and myocardial involvement remain the leading causes of morbidity and mortality.
Cristiana Sieiro Santos, José Miguel Sequí‐Sabater, Diego Benavent   +2 more
wiley   +1 more source

Micro-Deformable Mirror: a low cost technology for cryogenic active and adaptive optics [PDF]

, 1999
Electrostatically operated bi-directional deflecting silicon membranes can be created using bulk micromachining techniques. The 19-channel Micro-Deformable Mirror, potential candidate for space Active and Adaptive Optics, was built by OKO Technologies ...
Bonicel, Sebastien Louis
core