Results 241 to 250 of about 265,100 (299)
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Deformable mirror with thermal actuators
Optics Letters, 2002Low-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
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Elastic Deformation of Lightweight Mirrors
Applied Optics, 1973Results 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
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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
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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
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Distributed Force Control of Deformable Mirrors
European Journal of Control, 2011zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MacMynowski, Douglas G. +2 more
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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
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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
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Thermal Deformations of Solid Mirrors
Applied Optics, 1970The 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.
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Microelectromechanical deformable mirrors
IEEE Journal of Selected Topics in Quantum Electronics, 1999A 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
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SPIE Proceedings, 1992
This technical paper describes a new unique form of deformable mirror that was engineered, designed, and built at Hughes Danbury Optical Systems. This paper discusses the current state of the art, the requirements, configuration, and special features such as the choice of materials for the mirror, interchangeable actuators, cooling technique and ...
David Kittell, Carlo La Fiandra
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This technical paper describes a new unique form of deformable mirror that was engineered, designed, and built at Hughes Danbury Optical Systems. This paper discusses the current state of the art, the requirements, configuration, and special features such as the choice of materials for the mirror, interchangeable actuators, cooling technique and ...
David Kittell, Carlo La Fiandra
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SPIE Proceedings, 1989
A mathematical model for a spherical hexagon mirror is described along with the model verifications. A flat hexagon epoxy mirror with aluminum core is used in test procedures in addition to a flat aluminum honeycomb mirror. Deformable reflector concepts are discussed and piezoelectric actuators are analyzed.
C. P. Kuo, B. K. Wada
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A mathematical model for a spherical hexagon mirror is described along with the model verifications. A flat hexagon epoxy mirror with aluminum core is used in test procedures in addition to a flat aluminum honeycomb mirror. Deformable reflector concepts are discussed and piezoelectric actuators are analyzed.
C. P. Kuo, B. K. Wada
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Continuously Deformable Mirrors
SPIE Proceedings, 1987Low spatial and temporal frequency correction of optical wavefronts can be achieved with continuously deformable mirrors that are being developed by the Atomic Vapor Laser Isotope Separation (AVLIS) Program at Lawrence Livermore National Laboratory. These devices are simple in design, low in cost, require relatively few actuators, and are capable of ...
Richard H. Sawicki, William Sweatt
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