Results 251 to 260 of about 5,726 (305)

Deformable mirror with thermal actuators

Optics Letters, 2002
Low-cost adaptive optics is applied in lasers, scientific instrumentation, ultrafast sciences, and ophthalmology. These applications demand that the deformable mirrors used be simple, inexpensive, reliable, and efficient. We report a novel type of ultralow-cost deformable mirror with thermal actuators.
Gleb, Vdovin, Mikhail, Loktev
openaire   +2 more sources

Deformable mirror model for open-loop adaptive optics using multivariate adaptive regression splines [PDF]

open access: yesOptics Express, 2010
Open-loop adaptive optics is a technique in which the turbulent wavefront is measured before it hits the deformable mirror for correction. We present a technique to model a deformable mirror working in open-loop based on multivariate adaptive regression ...
Dani Guzman   +2 more
exaly   +2 more sources

Elastic Deformation of Lightweight Mirrors

Applied Optics, 1973
Results of analytical and experimental studies on the elastic deformation of lightweight mirrors under various support conditions are presented and compared. The analytical results were obtained using the finite-element method, which employs elements having stretching, bending, and twisting capability. Both structural deformation and deviation from the
R M, Richard, A J, Malvick
openaire   +2 more sources

Distributed Force Control of Deformable Mirrors

European Journal of Control, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MacMynowski, Douglas G.   +2 more
openaire   +3 more sources

Mirror Hand Deformity

JBJS Case Connector, 2013
Mirror hand (ulnar dimelia) is an extremely rare congenital deformity in the upper extremity; only approximately seventy cases have been reported in the literature1,2 since the anomaly was first described in 1587 by Rueff3. The typical deformity consists of an absent radius, a duplication of the ulna, and polydactyly4,5. The elbow is generally stiff in
Mona I, Winge, Kjell, Bye
openaire   +2 more sources

Microelectromechanical deformable mirrors

IEEE Journal of Selected Topics in Quantum Electronics, 1999
A new class of silicon-based deformable mirrors is described. These devices are capable of correcting time-varying aberrations in imaging or beam forming applications. Each mirror is composed of a flexible silicon membrane supported by an underlying array of electrostatic parallel plate actuators.
T.G. Bifano   +3 more
openaire   +1 more source

Thermal deformable mirror

SPIE Proceedings, 2006
Beam correction of high power lasers often requires large wavefront deformations with very slow rates of change. Adaptive Optics Associates, Inc. (AOA) has developed a new type of deformable mirror in which thermal expansion of tubes control the mirror's figure. This paper is the subject of a patent disclosure.
Carlos A. Caicedo   +5 more
openaire   +1 more source

Thermal Deformations of Solid Mirrors

Applied Optics, 1970
The tensor equations of elasticity including temperature terms in nonorthogonal coordinates are presented in a form suitable for the method of dynamic relaxation. A nonorthogonal coordinate system that includes a wide class of circular solid mirrors or lenses is described.
openaire   +2 more sources

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