Results 21 to 30 of about 21,086 (310)
A Novel SPGD Algorithm for Wavefront Sensorless Adaptive Optics System
IEEE Photonics Journal, 2023 Stochastic parallel gradient descent (SPGD) is the most frequently used optimization algorithm for correcting wavefront distortion in the wavefront sensorless adaptive optics(WFS-Less AO)system.
Jiaxun Li +6 more
doaj +1 more source
A Global Decoupling Control Algorithm for LC-DM Adaptive Optics System
IEEE Access, 2021 The liquid crystal (LC) and deformable mirror (DM) cascaded adaptive optics (AO) system can be used to effectively extend the imaging waveband of a large aperture telescope from the infrared to the visible waveband. However, to maintain the effectiveness
Yukun Wang +4 more
doaj +1 more source
Reconstruction of wavefront distorted by atmospheric turbulence using a Shack-Hartman sensor [PDF]
Компьютерная оптика, 2019 The reconstruction of a wave front containing random phase distortions of the light field is considered. The reconstruction is performed by a Hartmann method based on the approximation of the wave function by Zernike polynomials using estimates of local ...
Vitaly Lavrinov, Lidiya Lavrinova
doaj +1 more source
Applied Sciences, 2023 Measuring the intensity and distribution of atmospheric optical turbulence at large-aperture astronomical telescope sites is crucial to optimizing turbulence correction for different layers.
Xian Ran +7 more
doaj +1 more source
High-speed adaptive optics line scan confocal retinal imaging for human eye. [PDF]
PLoS ONE, 2017 PURPOSE:Continuous and rapid eye movement causes significant intraframe distortion in adaptive optics high resolution retinal imaging. To minimize this artifact, we developed a high speed adaptive optics line scan confocal retinal imaging system. METHODS:
Jing Lu +3 more
doaj +1 more source
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 +4 more
doaj +1 more source
Integrated modeling of the GMT laser tomography adaptive optics system [PDF]
, 2014 Laser Tomography Adaptive Optics (LTAO) is one of adaptive optics systems planned for the Giant Magellan Telescope (GMT). End-to-end simulation tools that are able to cope with the complexity and computational burden of the AO systems to be installed on ...
Piatrou, Piotr, Piotr Piatrou
core +1 more source
The giant magellan telescope laser tomography adaptive optics system [PDF]
, 2016 The Giant Magellan Telescope presents a unique optical design with seven 8.4 m diameter primary mirrors matched by seven adaptive secondary mirrors (ASM).
Rigaut, Francois +12 more
core +1 more source
A Study on a Single Continuous Deformable Mirror for Correction of Atmospheric Disturbance [PDF]
한국정밀공학회지, 2018 The deformable mirror is the main component of the adaptive optical imaging system, which removes the atmospheric disturbance and acquires the target image without any loss and the beam transmission system, which transmits the laser beam to a long ...
Hyun Cheol Cho +3 more
doaj +1 more source
Solar adaptive optics system using electromagnetic deformable mirror [PDF]
, 2009 A solar adaptive optics system has been improved by using a high-speed electromagnetic deformable mirror and adopting a modified sum-of-absolute-differences algorithm in wavefront sensing.
Noto, Yuuki +11 more
core +1 more source