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Mems Adaptive Optics Devices
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Author :Scot S. Olivier Publisher :SPIE-International Society for Optical Engineering ISBN 13 : Total Pages :258 pages Book Rating :4.3/5 (91 download)
Book Synopsis MEMS Adaptive Optics by : Scot S. Olivier
Download or read book MEMS Adaptive Optics written by Scot S. Olivier and published by SPIE-International Society for Optical Engineering. This book was released on 2007 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Download or read book MEMS Adaptive Optics Devices written by and published by . This book was released on 2002 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary goal of this portion of the LDRD is to develop a vertical programmable diffraction grating that can be fabricated with Sandia's Ultra-planar Multi-level MEMS Technology, the SUMMiT V{trademark} process. This grating is targeted for use in a chemical detection system dubbed the Polychromator. A secondary goal is to design diffraction grating structures with additional degrees of freedom (DOF). Gratings with 2.5 microns of vertical stroke have been realized. In addition, rotational DOF grating structures have been successfully actuated, and a structure has been developed that minimizes residual stress effects.
Download or read book MEMS Mirrors written by Huikai Xie and published by MDPI. This book was released on 2018-05-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "MEMS Mirrors" that was published in Micromachines
Book Synopsis III-V Materials-based Optical-MEMS Devices for Adaptive Optics and Vibration Sensing by : Vaibhav Mathur
Download or read book III-V Materials-based Optical-MEMS Devices for Adaptive Optics and Vibration Sensing written by Vaibhav Mathur and published by . This book was released on 2010 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Victor M. Bright Publisher :SPIE-International Society for Optical Engineering ISBN 13 : Total Pages :654 pages Book Rating :4.:/5 (318 download)
Book Synopsis Selected Papers on Optical MEMS by : Victor M. Bright
Download or read book Selected Papers on Optical MEMS written by Victor M. Bright and published by SPIE-International Society for Optical Engineering. This book was released on 1999 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of 81 papers on six major topics within the field of optical microelectromechanical systems (MEMS).
Book Synopsis Adaptive Optics for Biological Imaging by : Joel A Kubby
Download or read book Adaptive Optics for Biological Imaging written by Joel A Kubby and published by CRC Press. This book was released on 2013-04-26 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive Optics for Biological Imaging brings together groundbreaking research on the use of adaptive optics for biological imaging. The book builds on prior work in astronomy and vision science. Featuring contributions by leaders in this emerging field, it takes an interdisciplinary approach that makes the subject accessible to nonspecialists who want to use adaptive optics techniques in their own work in biology and bioengineering. Organized into three parts, the book covers principles, methods, and applications of adaptive optics for biological imaging, providing the reader with the following benefits: Gives a general overview of applied optics, including definitions and vocabulary, to lay a foundation for clearer communication across disciplines Explains what kinds of optical aberrations arise in imaging through various biological tissues, and what technology can be used to correct for these aberrations Explores research done with a variety of biological samples and imaging instruments, including wide-field, confocal, and two-photon microscopes Discusses both indirect wavefront sensing, which uses an iterative approach, and direct wavefront sensing, which uses a parallel approach Since the sample is an integral part of the optical system in biological imaging, the field will benefit from participation by biologists and biomedical researchers with expertise in applied optics. This book helps lower the barriers to entry for these researchers. It also guides readers in selecting the approach that works best for their own applications.
Book Synopsis Foundry Microfabrication of Deformable Mirrors for Adaptive Optics by : William D. Cowan
Download or read book Foundry Microfabrication of Deformable Mirrors for Adaptive Optics written by William D. Cowan and published by . This book was released on 1998-04-01 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microelectromechanical Systems (MEMS) is a rapidly emerging field of research in which batch fabrication processes are used to construct miniature devices. MEMS devices are particularly well suited to optical applications. Foundry microfabrication offers a substantial cost advantage for prototype system development. In this research, foundry MEMS processes are used to fabricate low-cost deformable mirror systems (MEM-DMs) for adaptive optics. The challenges and design trades associated with fabrication of continuous and segmented deformable mirrors in foundry processes are examined in detail. Micromirror surface figure is shown to be critically important. Beam steering and optical aberration correction experiments conclusively demonstrate the potential of low-cost MEM-DMs. The prototype MEM-DM systems are approximately 1/ 500th the cost of conventionally manufactured deformable mirrors. An innovative direct digital control scheme further reduces adaptive optic system cost by eliminating the digital to analog converter typically required for each controlled element. In addition to the MEM-DMs, other MEMS devices are shown. The thermally actuated piston micromirrors offer greater deflections for operation at longer optical wavelengths. Other MEMS devices examined include a series of tilting mirrors, pressure gauges, test structures, electrostatic scratch drive actuated rotors, and a new type of electrostatic cantilever motor with lateral motion output.
Download or read book MOEMS written by M. Edward Motamedi and published by SPIE Press. This book was released on 2005 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the exciting and fast-moving field of MOEMS to graduate students, scientists, and engineers by providing a foundation of both micro-optics and MEMS that will enable them to conduct future research in the field. Born from the relatively new fields of MEMS and micro-optics, MOEMS are proving to be an attractive and low-cost solution to a range of device problems requiring high optical functionality and high optical performance. MOEMS solutions include optical devices for telecommunication, sensing, and mobile systems such as v-grooves, gratings, shutters, scanners, filters, micromirrors, switches, alignment aids, lens arrays, and hermetic wafer-scale optical packaging. An international team of leading researchers contributed to this book, and it presents examples and problems employing cutting-edge MOEM devices. It will inspire researchers to further advance the design, fabrication, and analysis of MOEM systems.
Book Synopsis Demonstrating Optical Aberration Correction with a Mems Micro-Mirror Device by : Shaun Roger Hick
Download or read book Demonstrating Optical Aberration Correction with a Mems Micro-Mirror Device written by Shaun Roger Hick and published by . This book was released on 1996-12-01 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research conducted the first demonstrated use of a micro- electro-mechanical structure (MEMS) mirror array to correct a static optical aberration. A well developed technique in adaptive optics imaging systems uses a deformable mirror to reflect the incident wave front to the imaging stage of the system. By matching the surface of the deformable mirror to the shape of the wave front phase distortion, the reflected wave front will be less aberrated before it is imaged. Typical adaptive optics systems use piezo-electric actuated deformable mirrors. This research used an electrostatically actuated, segmented mirror array, constructed by standard MEMS fabrication techniques, to investigate its performance as a deformable mirror. The relatively cheap cost of MEMS fabrication promises new adaptive optics applications if a suitable design can be found. In the demonstration, the point spread function (PSF) of the corrected and uncorrected aberrated image were compared. A 43 percent improvement in the peak intensity of the PSF was noted in the corrected image.
Book Synopsis Design, Fabrication and Characterization of MEMS Deformable Mirrors for Ocular Adaptive Optics by : Hyunkyu Park
Download or read book Design, Fabrication and Characterization of MEMS Deformable Mirrors for Ocular Adaptive Optics written by Hyunkyu Park and published by . This book was released on 2009 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adaptive Optics Ophthalmologic Systems Using Dual Deformable Mirrors by :
Download or read book Adaptive Optics Ophthalmologic Systems Using Dual Deformable Mirrors written by and published by . This book was released on 2007 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive Optics (AO) have been increasingly combined with a variety of ophthalmic instruments over the last decade to provide cellular-level, in-vivo images of the eye. The use of MEMS deformable mirrors in these instruments has recently been demonstrated to reduce system size and cost while improving performance. However, currently available MEMS mirrors lack the required range of motion for correcting large ocular aberrations, such as defocus and astigmatism. In order to address this problem, we have developed an AO system architecture that uses two deformable mirrors, in a woofer/tweeter arrangement, with a bimorph mirror as the woofer and a MEMS mirror as the tweeter. This setup provides several advantages, including extended aberration correction range, due to the large stroke of the bimorph mirror, high order aberration correction using the MEMS mirror, and additionally, the ability to ''focus'' through the retina. This AO system architecture is currently being used in four instruments, including an Optical Coherence Tomography (OCT) system and a retinal flood-illuminated imaging system at the UC Davis Medical Center, a Scanning Laser Ophthalmoscope (SLO) at the Doheny Eye Institute, and an OCT system at Indiana University. The design, operation and evaluation of this type of AO system architecture will be presented.
Book Synopsis Adaptive Optics Engineering Handbook by : Robert Tyson
Download or read book Adaptive Optics Engineering Handbook written by Robert Tyson and published by CRC Press. This book was released on 1999-11-10 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook supplies analytical tools for the design and development of adaptive optics systems to enhance their ability to adjust for atmospheric turbulence, optical fabrication errors, thermally induced distortions, and laser device aberrations. It provides recommendations for selecting, testing and installing a wavefront compensation system.
Book Synopsis Microelectromechanical Systems and Devices by : Nazmul Islam
Download or read book Microelectromechanical Systems and Devices written by Nazmul Islam and published by BoD – Books on Demand. This book was released on 2012-03-28 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advances of microelectromechanical systems (MEMS) and devices have been instrumental in the demonstration of new devices and applications, and even in the creation of new fields of research and development: bioMEMS, actuators, microfluidic devices, RF and optical MEMS. Experience indicates a need for MEMS book covering these materials as well as the most important process steps in bulk micro-machining and modeling. We are very pleased to present this book that contains 18 chapters, written by the experts in the field of MEMS. These chapters are groups into four broad sections of BioMEMS Devices, MEMS characterization and micromachining, RF and Optical MEMS, and MEMS based Actuators. The book starts with the emerging field of bioMEMS, including MEMS coil for retinal prostheses, DNA extraction by micro/bio-fluidics devices and acoustic biosensors. MEMS characterization, micromachining, macromodels, RF and Optical MEMS switches are discussed in next sections. The book concludes with the emphasis on MEMS based actuators.
Book Synopsis Extreme Adaptive Optics Testbed by : J. W. Evans
Download or read book Extreme Adaptive Optics Testbed written by J. W. Evans and published by . This book was released on 2005 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: ''Extreme'' adaptive optics systems are optimized for ultra-high-contrast applications, such as ground-based extrasolar planet detection. The Extreme Adaptive Optics Testbed at UC Santa Cruz is being used to investigate and develop technologies for high-contrast imaging, especially wavefront control. We use a simple optical design to minimize wavefront error and maximize the experimentally achievable contrast. A phase shifting diffraction interferometer (PSDI) measures wavefront errors with sub-nm precision and accuracy for metrology and wavefront control. Previously, we have demonstrated RMS wavefront errors of 1.5 nm and a contrast of10{sup 7} over a substantial region using a shaped pupil without a deformable mirror. Current work includes the installation and characterization of a 1024-actuator Micro-Electro-Mechanical-Systems (MEMS) deformable mirror, manufactured by Boston Micro-Machines for active wavefront control. Using the PSDI as the wavefront sensor we have flattened the deformable mirror to 1 nm within the controllable spatial frequencies and measured a contrast in the far field of10{sup 6}. Consistent flattening required testing and characterization of the individual actuator response, including the effects of dead and low-response actuators. Stability and repeatability of the MEMS devices was also tested. Ultimately this testbed will be used to test all aspects of the system architecture for an extrasolar planet-finding AO system.
Download or read book MEMS Adaptive Optics VII. written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Smart Mems and Sensor Systems by : Elena Gaura
Download or read book Smart Mems and Sensor Systems written by Elena Gaura and published by Imperial College Press. This book was released on 2006 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, MEMS have revolutionized the semiconductor industry, with sensors being a particularly buoyant sector. Smart MEMS and Sensor Systems presents readers with the means to understand, evaluate, appreciate and participate in the development of the field, from a unique systems perspective. The combination of MEMS and integrated intelligence has been put forward as a disruptive technology. The full potential of this technology is only evident when it is used to construct very large pervasive sensing systems. The book explores the many different technologies needed to build such systems and integrates knowledge from three different domains: MEMS technology, sensor system electronics and pervasive computing science. Throughout the book a top-down design perspective is taken, be it for the development of a single smart sensor or that of adaptive ad-hoc networks of millions of sensors. For experts in any of the domains named above the book provides the context for their MEMS based design work and an understanding of the role the other domains play. For the generalist (either in engineering or computing) or the technology manager the underpinning knowledge is provided, which can inform specialist decision making. Sample Chapter(s). Chapter 1: Markets and Applications (1,731 KB). Contents: Markets and Applications; Microfabrication Technologies; Sensor Electronics; Sensor Signal Enhancement; Case Study: Control Systems for Capacitive Inertial Sensors; Case Study: Adaptive Optics and Smart VLSI/MEMS Systems; Artificial Intelligence Techniques for Microsensors Identification and Compensation; Smart, Intelligent and Cogent MEMS Based Sensors; Sensor Arrays and Networks; Wireless and Ad Hoc Sensor Networks; Realising the Dream OCo A Case Study. Readership: Graduate students on courses in sensing, instrumentation, VLSI, and MEMS technology; researchers and academics dealing with smart sensor systems; practitioners who need to understand and apply the technology effectively."
Book Synopsis Memorial ajustado, hecho en virtud de auto del Consejo... del pleyto pendiente en el entre Don Andres Tellez Giron, Duque de Uceda,... Don Luis Fernandez de Cordova Espinola de la Cerda, Duque de Medina-Celi,... Don Francisco de Paula, Cordova Pacheco, Portocarrero y Cardenas,... como marido de Doña Isabel Maria Pacheco, Portocarrero y Cardenas, Marquesa de la Torre de las Sergadas,... y D. Joseph Manuel de Esquivel, Rivas y Verastegui,... como marido de Doña Antonia Xaviera de Cardenas y Peralta, Marquesa de Legarda,... sobre la Tenuta, y Possession de los Mayorazgos del Aguijón, Torre del Fresno, Torre del Aguila, y Villa de Lobón, fundados por Don Alonso de Cardenas, y Doña Elvira de Figueroa, su muger, Condes de la Puebla del Maestre vacantes por muerte de la Condesa de Monte- nuevo... by :
Download or read book Memorial ajustado, hecho en virtud de auto del Consejo... del pleyto pendiente en el entre Don Andres Tellez Giron, Duque de Uceda,... Don Luis Fernandez de Cordova Espinola de la Cerda, Duque de Medina-Celi,... Don Francisco de Paula, Cordova Pacheco, Portocarrero y Cardenas,... como marido de Doña Isabel Maria Pacheco, Portocarrero y Cardenas, Marquesa de la Torre de las Sergadas,... y D. Joseph Manuel de Esquivel, Rivas y Verastegui,... como marido de Doña Antonia Xaviera de Cardenas y Peralta, Marquesa de Legarda,... sobre la Tenuta, y Possession de los Mayorazgos del Aguijón, Torre del Fresno, Torre del Aguila, y Villa de Lobón, fundados por Don Alonso de Cardenas, y Doña Elvira de Figueroa, su muger, Condes de la Puebla del Maestre vacantes por muerte de la Condesa de Monte- nuevo... written by and published by . This book was released on 1765* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
