Results 31 to 40 of about 666,559 (380)
High pixel number deformable mirror concept utilizing piezoelectric hysteresis for stable shape configurations [PDF]
Journal of Astronomical Telescopes Instruments and Systems, 2020 We present the conceptual design and initial development of the Hysteretic Deformable Mirror (HDM). The HDM is a completely new approach to the design and operation of deformable mirrors for wavefront correction in advanced imaging systems.
A. Schmerbauch +4 more
semanticscholar +1 more source
Photonics, 2023 Atmospheric turbulence causes refractive index fluctuations, which in turn introduce extra distortions to the wavefront of the propagated radiation. It ultimately degrades telescope resolution (in imaging applications) and reduces radiation power density
Ilya Galaktionov +4 more
doaj +1 more source
The quantum deformed mirror TBA II [PDF]
Journal of High Energy Physics, 2012 v2, 51 pages, 5 figures, as ...
Gleb Arutyunov +3 more
openaire +12 more sources
Distributed actuator deformable mirror [PDF]
SPIE Proceedings, 2011 In this paper we present a Deformable Mirror (DM) based on the continuous voltage distribution over a resistive layer. This DM can correct the low order aberrations (defocus, astigmatism, coma and spherical aberration) using three electrodes with nine contacts leading to an ideal device for sensorless applications. We present a mathematical description
J. Lafranceschina +2 more
openaire +4 more sources
Active optics: deformable mirrors with a minimum number of actuators [PDF]
Journal of the European Optical Society-Rapid Publications, 2012 We present two concepts of deformable mirror to compensate for first order optical aberrations. Deformation systems are designed using both elasticity theory and Finite Element Analysis in order to minimize the number of actuators.
Laslandes M., Hugot E., Ferrari M.
doaj +1 more source
Amplitude Zone Plate in Adaptive Optics: Proposal of the Principle
Photonics, 2022 One of the main elements in hardware-based adaptive optics systems is a deformable mirror. There is quite a large number of such mirrors based on different principles and exhibiting varying performance.
Vasily Matkivsky +3 more
doaj +1 more source
Photonics, 2021 To acquire images with higher accuracy of wide-field telescopes, deformable mirrors with more than 100 actuators are used, making the telescope alignment more complex and time-consuming.
Min Li, Ang Zhang, Junbo Zhang, Hao Xian
doaj +1 more source
Stroke amplifier for deformable mirrors [PDF]
Applied Optics, 2004 We demonstrate a simple optical configuration that amplifies the usable stroke of a deformable mirror. By arranging for the wavefront to traverse the deformable mirror more than once, we correct it more than once. The experimental implementation of the idea demonstrates a doubling of 2.0 and 2.04 by two different means.
Marc J. Albanese +4 more
openaire +3 more sources
Active Optics–Freeform Segment Mirror Replications from a Deformable Matrix
Photonics, 2022 We present a new active optics method for making smooth aspheric, or freeform, mirrors by replication technique from an elastically deformable matrix.
Gerard R. Lemaitre, Patrick Lanzoni
doaj +1 more source
A magnetic liquid deformable mirror for high stroke and low order axially symmetrical aberrations [PDF]
, 2006 We present a new class of magnetically shaped deformable liquid mirrors made of a magnetic liquid (ferrofluid). Deformable liquid mirrors offer advantages with respect to deformable solid mirrors: large deformations, low costs and the possibility of very
Anna Ritcey +4 more
core +2 more sources