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
Suppressing low-order eigenmodes with local control for deformable mirrors [PDF]
, 2012 To improve the mechanical characteristics of actively controlled continuous faceplate deformable mirrors in adaptive optics, a strategy for reducing crosstalk between adjacent actuators and for suppressing low-order eigenmodes is proposed.
Andersen, Torben +4 more
core +1 more source
Optimization of Electrode Configuration in Surface-Parallel Actuated Deformable Mirrors [PDF]
, 2014 Thin, lightweight and low-cost deformable mirrors have been recently proposed, providing a pertinent device for wavefront error correction. We present different approaches to optimize actuator arrangement.
Laslandes, Marie +3 more
core +1 more source
Multiplexing control of a multichannel piezoelectric deformable mirror
SPIE Proceedings, 2005 ABSTRACT Addressing of massive arrays of piezoelectric actuators is usually achieved by using separate high-voltage output drivers, one per channel. This approach applied to high-order adaptive optics systems results in complex, expensive and vulnerable to handling abuse driver electronics, hardly scalable to 10 3 -10 4 actuators.
Song, H. (author) +2 more
openaire +3 more sources
Ultralightweight deformable mirrors [PDF]
, 2013 This paper presents a concept for ultralightweight deformable mirrors, based on a thin substrate of optical surface quality, coated with continuous active layers that provide separate modes of actuation at different length scales. This concept eliminates
Patterson, Keith, Pellegrino, Sergio
core +1 more source
Thin deformable mirrors for a reconfigurable space telescope [PDF]
, 2012 As part of a small satellite technology demonstration that will utilize autonomous assembly, reconfiguration, and docking technology to form the primary mirror for the mission’s telescope payload, the mirror segments are required to modify and control ...
Bely P. +10 more
core +1 more source
Major Reference Works, Page 290-301., 2021 International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.
Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
John P. Sutter C. Chantler +2 more
wiley +1 more source
Piezoelectric deformable mirror driven by unimorph actuator arrays on multi-spatial layers
Optics Express, 2023 In order to reduce the cost of the piezo actuator array deformable mirror (DM), a piezoelectric DM driven by unimorph actuator arrays on multi-spatial layers is proposed. The actuator density can be multiplied by increasing the spatial layers of the actuator arrays.
Xiaoshuai Han +4 more
openaire +2 more sources
SPICA infrared coronagraph for the direct observation of exo-planets
, 2010 We present a MIR coronagraph to target the direct observation of extrasolar planets for SPICA, in which a coronagraph is currently regarded as an option of the focal plane instruments. The primary target of the SPICA coronagraph is the direct observation
Abe +66 more
core +1 more source
Focusing Mirror with Tunable Eccentricity
, 2013 We present a new kind of varifocal mirror with independently adjustable curvatures in the major directions. For actuation we use two stacked piezo bending actuators with crossed in-plane polarization.
Brunne, Jens +3 more
core +1 more source