Relevant bibliographies by topics / Mirrors – Design

Academic literature on the topic 'Mirrors – Design'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Mirrors – Design"

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Zhang, Changhao, and Zongxuan Li. "A Review of Lightweight Design for Space Mirror Core Structure: Tradition and Future." Machines 10, no. 11 (November 11, 2022): 1066. http://dx.doi.org/10.3390/machines10111066.

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With the continuous improvement of the imaging quality requirement of the space optical system, the large-aperture mirror becomes the research focus. However, the increase of the aperture will increase the whole weight which results in high launch cost and degrades the mirror surface figure accuracy. Therefore, the lightweight design method of the mirror structure is of great importance. In recent years, many space telescope system schemes have demonstrated the progress of the structural lightweight design of mirrors, such as Spitzer, SOFIA, JWST, etc. This article reviews the main content and innovations of the research on the structural designs of mirrors including conventional machining designs and topology optimization structures. Meanwhile, some emerging designs (e.g., lattices and Voronoi structures) considering additive manufacturing (AM) are also introduced. Several key elements of different structural design approaches for lightweight mirrors are discussed and compared, such as material, lightweight ratio, design methods, surface figure, etc. Finally, future challenges, trends, and prospects of lightweight design for mirrors are discussed. This article provides a reference for further related research and engineering applications.
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Zhang, Kai, Hemeng Qu, Haijun Guan, Jizhen Zhang, Xin Zhang, Xiaolin Xie, Lei Yan, and Chao Wang. "Design and Fabrication Technology of Metal Mirrors Based on Additive Manufacturing: A Review." Applied Sciences 11, no. 22 (November 11, 2021): 10630. http://dx.doi.org/10.3390/app112210630.

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In recent years, much progress has been made on the development of metal mirrors based on additive manufacturing (AM). The sandwich mirror is well known for its excellent mechanical properties and challenging machining. Now, AM can be used to fabricate this complex structure and reduce the processing time and cost. In addition, with the aid of some new design methods for additive manufacturing, such as lattice, topology optimization (TO), and Voronoi, the freedom of mirror structure design is enormously improved. The common materials of mirrors include ceramics (SiC), glasses (glass ceramics, fused silica), and metals (aluminum, beryllium). Among them, the AM technology of metals is the most mature and widely used. Researchers have recently extensively developed the new-generation metal mirror to improve performance and lightweight rate. This review focuses on the following topics: (1) AM technologies and powder materials for metal mirrors, (2) recent advances in optomechanical design methods for AM metal mirrors, (3) challenges faced by AM metal mirrors in fabricating, and (4) future trends in AM metal mirrors.
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Luo, Xianquan, and Junwei Lv. "A Prototype Design of Scanning Mirror Used in MEMS and Its Experimental Verification." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 13, no. 6 (November 4, 2020): 885–93. http://dx.doi.org/10.2174/2352096512666191019153222.

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Background: The MEMS scanning mirror prototype is a spatial scanning device, which has advantages such as light mass, low drive voltage, large scanning and high angular measurement accuracy. Methods: The MEMS scanning mirror prototype uses the piezoelectric driving principle to drive the micro-structure to realize two-axis scanning. The corner of the MEMS scanning mirror is measured by using a piezoelectric resistance sensor. In the paper, the damping properties of MEMS scanning mirrors have been studied, which deduce the damping force formula of MEMS scanning mirrors. Moreover, the influence of different sizes and structures of MEMS scanning mirrors on the damping force and the amplitude of scanning mirror angles are analyzed, and a structural optimization design method to reduce the driving voltage of MEMS scanning mirrors is proposed. Results: The theoretical analysis, design and testing of piezoelectric driven MEMS scanning microscopes have been carried out. Conclusion: Through related experiments, it is verified that the maximum scanning range and the precision index of angle measurement meet the requirements of the index.
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Alaruri, Sami D. "45.5X Infinity Corrected Schwarzschild Microscope Objective Lens Design." International Journal of Measurement Technologies and Instrumentation Engineering 7, no. 1 (January 2018): 17–37. http://dx.doi.org/10.4018/ijmtie.2018010102.

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In this article, the design of a 45.5X (numerical aperture (NA) =0.5) infinity corrected, or infinite conjugate, Schwarzschild reflective microscope objective lens is discussed. Fast Fourier transform modulation transfer function (FFT MTF= 568.4 lines/mm at 50% contrast for the on-axis field-of-view), root-mean-square wavefront error (RMS WFE= 0.024 waves at 700 nm), point spread function (PSF, Strehl ratio= 0.972), encircled energy (0.88 µm spot radius at 80% fraction of enclosed energy), optical path difference (OPD=-0.644 waves) and Seidel coefficients calculated with Zemax® are provided to show that the design is diffraction-limited and aberration-free. Furthermore, formulas expressing the relationship between the parameters of the two spherical mirrors and the Schwarzschild objective lens focal length are given. In addition, tolerance and sensitivity analysis for the Schwarzschild objective lens, two spherical mirrors indicate that tilting the concave mirror (or secondary mirror) has a higher impact on the modulation transfer function values than tilts introduced by the convex mirror (or primary mirror). Finally, the performed tolerance and sensitivity analysis on the lens design suggests that decentering any of the mirrors by the same distance has the same effect on the modulation transfer function values.
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Ice, Gene E., Judy W. L. Pang, Chris Tulk, Jamie Molaison, Jae-Young Choi, Cody Vaughn, Lauren Lytle, et al. "Design challenges and performance of nested neutron mirrors for microfocusing on SNAP." Journal of Applied Crystallography 42, no. 6 (October 30, 2009): 1004–8. http://dx.doi.org/10.1107/s0021889809037595.

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Kirkpatrick–Baez (KB) neutron supermirrors can efficiently focus polychromatic neutron beams to micrometre dimensions. The ultimate size is determined mainly by the perfection of the mirrors and by the size of the beam needed to have sufficient experimental signal. Nested or Montel KB mirrors can collect ∼2.6 times more beam than standard sequential KB optics, but require good figure perfection at the edge of one mirror. This paper describes the characterization of the figure errors over the important reflective portions of the two mirrors needed for a Montel focusing pair. The measurements are placed in context with theoretical predictions and are used to predict mirror focusing performance. Strategies to improve on the focusing of this class of optics are suggested and early results from these mirrors installed on the Spallation Neutrons at Pressure (SNAP) Beamline 3 at the Spallation Neutron Source (SNS) at Oak Ridge are presented.
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Rasmussen, C., R. E. Gallery, and J. S. Fehmi. "Passive soil heating using an inexpensive infrared mirror design – a proof of concept." SOIL Discussions 2, no. 1 (May 11, 2015): 427–48. http://dx.doi.org/10.5194/soild-2-427-2015.

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Abstract. There is need to understand the response of soil systems to predicted climate warming for modeling soil process response to climate warming. Current methods for soil warming include expensive and difficult to implement active and passive techniques. Here we test a simple, inexpensive in situ passive soil heating approach, based on easy to construct infrared mirrors that do not require automation or enclosures. The infrared mirrors consisted of 61 × 61 cm glass panels coated with infrared reflecting film. The mirrors as constructed are effective for soil heating in environments typified by open canopy and low canopy vegetation. Mirror tests were performed on several soils in a warm semiarid environment. Results indicated that the infrared mirrors yielded significant heating and drying of soil surface and shallow subsurface relative to un-warmed control treatments, and that warming and drying effects was soil specific with greater potential warming on soils with lower volumetric heat capacity. Atmospheric and soil moisture attenuated mirror induced soil warming. The results demonstrate proof-of-concept that the infrared mirrors may be used to passively heat the near soil surface, providing an inexpensive, low-maintenance alternative to other passive and active soil heating technologies.
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Rasmussen, C., R. E. Gallery, and J. S. Fehmi. "Passive soil heating using an inexpensive infrared mirror design – a proof of concept." SOIL 1, no. 2 (September 21, 2015): 631–39. http://dx.doi.org/10.5194/soil-1-631-2015.

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Abstract. There is a need to understand the soil system response to warming in order to model the soil process response to predicted climate change. Current methods for soil warming include expensive and difficult to implement active and passive techniques. Here we test a simple, inexpensive in situ passive soil heating approach, based on easy to construct infrared mirrors that do not require automation or enclosures. The infrared mirrors consisted of 61 × 61 cm glass panels coated with infrared reflecting film. The mirrors as constructed are effective for soil heating in environments typified by an open vegetation canopy. Mirror tests were performed on three soils of varying texture, organic matter content, and heat capacity in a warm semi-arid environment. Results indicated that the infrared mirrors yielded significant heating and drying of soil surface and shallow subsurface relative to unwarmed control treatments, and that warming and drying effects were soil specific with greater potential warming on soils with lower volumetric heat capacity. Partial shading from the mirror frame did produce periods of relative cooling at specific times of the day but overall the mirrors yielded a net soil warming. The results demonstrate proof of concept that the infrared mirrors may be used to passively heat the near soil surface, providing an inexpensive, low-maintenance alternative to other passive and active soil heating technologies.
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Oh, Jae Sok, Chan Park, Kang-Min Kim, Moo-Young Chun, In-Soo Yuk, Heeyoung Oh, Ueejeong Jeong, Young Sam Yu, Hanshin Lee, and Sungho Lee. "IGRINS MIRROR MOUNT DESIGN FOR FIVE FLAT MIRRORS." Publications of The Korean Astronomical Society 30, no. 1 (March 31, 2015): 17–29. http://dx.doi.org/10.5303/pkas.2015.30.1.017.

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Watanabe, Takeo, Tsuneyuki Haga, Masahito Niibe, and Hiroo Kinoshita. "Design of beamline optics for EUVL." Journal of Synchrotron Radiation 5, no. 3 (May 1, 1998): 1149–52. http://dx.doi.org/10.1107/s0909049597017536.

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The design of front-end collimating optics for extreme-ultraviolet lithography (EUVL) is reported. For EUVL, collimating optics consisting of a concave toroidal mirror and a convex toroidal mirror can achieve shorter optical path lengths than collimating optics consisting of two concave toroidal mirrors. Collimating optics consisting of a concave toroidal mirror and a convex toroidal mirror are discussed. The design of collimating optics for EUVL beamlines based on ray-tracing studies is described.
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Cheng, Ying, Feng Zhou Fang, Xiao Dong Zhang, and Xiao Tang Hu. "Design and Fabrication of Composite Solar Concentrator." Key Engineering Materials 447-448 (September 2010): 366–70. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.366.

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The solar concentrator is the primary means of solving the contradiction between cost and photoelectric conversion efficiency. The design and fabrication of concentrator are the key techniques to accelerate the application of photovoltaic systems. A novel type of composite concentrator is designed, including two mirrors and one planar lens. The primary mirror focuses the sunlight on the secondary condenser, which is one multi-segmented cone mirror to produce homogenization on the solar cell. The selection strategy of structure parameters is analyzed by the numerical calculation methods. The concentration ratio and homogenization on the receiving surface are also obtained using the optical simulation method. The designed mirrors are fabricated by the ultra-precision turning method, and then assembled according to the location parameters designed. The proposed methods are proved to be satisfied with the solar application efficiently by the experiments.
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Dissertations / Theses on the topic "Mirrors – Design"

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Pinholster, William. "After August: Museums As Mirrors." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1588.

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The After August Museum collects and exhibits an open, user-generated body of content. Its primary objective is to help heal the post-Katrina Lower Ninth Ward community. It is respectful and considerate of the area's established traditions, present concerns, and future goals. The museum assumes multiple shapes and plays multiple roles as it acts as the center of the transitioning community.
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Matuschek, Nicolai. "Theory and design of double-chirped mirrors /." Zürich, 1999. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13223.

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Cho, Myung Kyu. "Structural deflections and optical performances of lightweight mirrors." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184875.

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A parametric design study of light weight mirror shapes with various support conditions was performed utilizing the finite element program NASTRAN. Improvements in the mirror performance were made based on the following design criteria: (1) minimization of the optical surface wavefront variations, (2) minimization of the self-weight directly related to cost of manufacturing, and (3) optimal location of support points. A pre-processor to automatically generate a finite element model for each mirror geometry was developed in order to obtain the structural deformations systematically. Additionally, a post-processor, which prepares an input data file for FRINGE (an optical computer code) was developed for generating the optical deflections that lead to the surface wavefront variations. Procedures and modeling techniques to achieve the optimum (the lightest and stiffest mirror shape due to self-weight) were addressed. Fundamental natural frequency analyses, for contoured back mirror shapes for a variety of support conditions, were performed and followed by comparisons of the results which were obtained from NASTRAN and a closed-form approximate solution. In addition, element validity and sensitivity studies were conducted to demonstrate the behavior of the element types provided in the NASTRAN program when used for optical applications. Scaling Laws for the evaluations of the optical performances and the fundamental frequencies were established.
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Scheidl, Martin. "The design and fabrication of movable micromachined mirrors." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/39951.

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Liu, Celia H. (Celia Hsin-Hsin). "Structural analysis and design of adaptive lightweight mirrors." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/49907.

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Baiocchi, Dave. "Design and control of lightweight, active space mirrors." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290102.

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The success of the Hubble Space Telescope created a great interest in the next generation of space telescopes. To address this need, the University of Arizona (UA) has designed and built several lightweight prototype mirrors ranging in size from 0.5 m to 2 m in diameter. These mirrors consist of three key components: a thin, lightweight glass substrate holds the reflective surface; the surface accuracy is maintained by an array of position actuators; and the stiffness is maintained by a lightweight carbon-fiber/epoxy support structure. The UA mirrors are different from conventional mirrors in that they are actively-controlled: their figure may be changed after they leave the optics shop. This dissertation begins with an overview of the technical issues for placing large optics in space, and I also discuss the current state-of-the-art in active mirror design. Chapters 3 and 4 discuss ways to design mirrors such that the optical performance is maximized while the mass is minimized. Chapter 3 looks at the best way to distribute the mass between the reflective substrate and the actuators, and Chapter 4 looks at the optimum geometries for structured mirrors. The second half of this work looks at the practical aspects of controlling active mirrors. Chapter 5 discusses the University of Arizona's 2 m NMSD prototype mirror. Specifically, I review the system that I developed to measure and control the mirror. I also provide some details on using a least-squares solution to solve for the actuator commands. Chapter 6 discusses the UA ultralightweight 0.5 m prototype mirror. I describe the techniques that I developed for attaching loadspreaders to the reflective surface, the metrology system, and a software package used to remotely-control the mirror.
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Cheng, Andrew Yuk Sun. "DESIGN ASPECTS OF FUTURE VERY LARGE TELESCOPES (HONEYCOMB MIRRORS)." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/183998.

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Research has been carried out on three major difficulties in designing efficient and economic telescopes with 8m f/1 lightweight mirrors. These problems are polishing f/1 aspherics, thermal distortion of borosilicate glass mirror and mirror seeing. Viable solutions to all three have been developed. Solving the fundamental problems allows future very large telescopes to use such mirrors as the basic elements in the design which will reduce the cost. Accurate mirror figure together with good pointing stability given by the short focal length will enable the telescope to form images as sharp as that permitted by nature on the ground. A new technology of polishing f/1 aspherics with a computer controlled stressed lap will give very accurate figure because the lap is changed accurately to adapt the desired figure. Design parameters and performance specifications for a 0.6m aluminum stressed lap for polishing a spun cast 1.8m f/1 borosilicate glass honeycomb mirror have been developed. These can be readily scaled up for polishing 8m f/1 mirrors. Stressed lap polishing also requires accurate material removal over the entire mirror surface. An optimization algorithm using the theory of material wear has been developed to search for the polishing strokes suited for uniform or other desired removal rates. Direct casting of lightweight mirrors requires that the glass be borosilicate. The figure distortion caused by the expansion of borosilicate glass requires the mirror be isothermal to less than 0.1°C for image degradation not to exceed 0.1 arcsecond. The problem of thermal interference by air and the environment has been investigated. A method of injecting well controlled air into the cells that forces the mirror to be isothermal to within 0.1°C has been discovered. Mirror seeing caused by temperature difference between the mirror and ambient air can degrade the telescope performance, but can be reduced by careful thermal design. A simple theoretical thermal model is used to select the glass thickness of a honeycomb structure mirror. Under air ventilation thermal control, the mirror responds to changing air temperature in less than an hour, reducing mirror seeing also to 0.1 arcsecond for telescopes at good seeing sites.
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Chesbro, Dylan L. "DESIGN, FABRICATION, AND CHARACTERIZATION OF ELECTROSTATICALLY-ACTUATED SILICON MICRO-MIRRORS." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/281.

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Micrometer-scale mirrors are used in many electronic devices today such as digital light projection. One common type of mirror is a thin plate structure supported by torsional hinges which rotates when actuated. These devices are popular because the design allows for high stability and reliability. Parallel plate electrostatic actuation is commonly used to create the force which rotates the plate structure. The device consists of one deformable parallel plate electrode and one immovable electrode. In order for these devices to rotate to a specific angle when actuated, both the mechanical and electrostatic forces must be characterized. This project analyzes both of these forces through modeling equations, and compares theoretical performance to experimentally measured values. The rotational measurements involve reflecting a laser spot off the surface of the actuator face and recording any displacement of the laser spot with a position sensitive device. The electrostatic device created consists of a rotating hinged structure, a fixed aluminum electrode, and a polymer spacer to create an air gap between the electrodes. These components are created using standard semiconductor fabrication techniques. The hinged structures are created from a 500μm thick, double-sided polished, single crystal (100) silicon wafer. The wafers are etched using both wet etching, and reactive ion etching techniques, which produce approximately 8μm thick plate structures. Physical vapor deposition is used to deposit a thin aluminum film onto the silicon in order to form a conductive layer. Rigid aluminum counter-electrodes and SU-8 polymer spacers are fabricated on a glass slide. The silicon actuator chip is aligned and mounted onto the glass slide. Once fabricated, the micro-mirror actuator was tested for angular rotation as a function of applied voltage. The applied voltage ranged from 0 to 100V and produced an angular rotation up to 0.3 degrees. During testing it was observed that the stability of the angular tilt was poor enough to merit further examination. Angular stability over time can be a serious issue for micro mirrors, and can cause complete failure of the device. Short and long term angular drift as well as a rotational settling phenomenon were investigated. Angular drift was found to be most likely caused by electrical or environmental factors. The rotational settling had an electrical root cause, which caused charge to migrate on the glass substrate beneath the actuator. The charge formed by the migration created a counteracting force on the actuator causing the rotation angle to reduce over time. The migrating charge was eliminated by creating a second neutrally charged counter-electrode which prevented charge from building on the glass surface.
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Tondapu, Karthik. "Design and fabrication of one and two axis nickel electroplated micromirror array." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/6037.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 15, 2008) Includes bibliographical references.
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Bexell, Felicia. "MINDTRIP : An exploration of mirror illusions in fashion design." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-22031.

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This work explores the interactive use of mirrored and reflective materials in the context of fashion. It draws parallels between the way in which it has been used in architecture in comparison to fashion and seeks a way to make a fair translation between the two mediums. The motive behind this work lies in the curiosity to explore reflective mirror materials in clothing beyond simply as shiny surface materials and aims instead to explore its illusive properties when combined with archetypical pattern prints. This to explore the potential aesthetic expressions it could bring to the fashion field. Using the theoretical approach of convergence, divergence, and transformation by Jones and methods by Thornquist that was slightly modified and reworked to fit the context of this project. Investigations with the reflective material were tested in different scales, both by draping with the material as is and by cutting and placing it in different ways in relation to the printed textile material. Derived from these experiments a new illusive material was created with special draping and shaping properties that came to define the collection as a whole.
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Books on the topic "Mirrors – Design"

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Conant, Robert. Micromachined mirrors. Boston: Kluwer Academic Publishers, 2003.

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Conant, Robert. Micromachined Mirrors. Boston, MA: Springer US, 2003.

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Matuschek, Nicolai. Theory and design of double-chirped mirrors. Konstanz: Hartung-Gorre, 1999.

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Heyne, Pamela. Mirror by design: Using reflection to transform a space. New York: Wiley, 1996.

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Malacara, Daniel. Handbook of lens design. New York: Marcel Dekker, 1994.

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1928-, Hradaynath R., ed. Selected papers on prisms and mirrors--design and fabrication. Bellingham, Wash: SPIE, International Society forOptical Engineering, 1993.

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Design and mounting of prisms and small mirrors in optical instruments. Bellingham, Wash: SPIE Optical Engineering Press, 1998.

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Malacara, Daniel. Handbook of optical design. 2nd ed. New York: Marcel Dekker, 2004.

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Computer, Lens Design Workshop (1987 Los Angeles Calif ). Recent trends in optical systems design. Bellingham, Wash., USA: SPIE--the International Society for Optical Engineering, 1987.

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Vlasov, N. M. Stabilʹnostʹ opticheskoĭ poverkhnosti lazernykh zerkal. Moskva: T︠S︡NIIatominform, 2005.

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Book chapters on the topic "Mirrors – Design"

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Jiao, Chang Jun, Xu Hui Xie, Sheng Yi Li, Lin Zhou, and Yi Fan Dai. "Design of Ion Beam Figuring Machine for Optical Mirrors." In Optics Design and Precision Manufacturing Technologies, 756–61. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-458-8.756.

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Wu, Zhizheng, Azhar Iqbal, and Foued Ben Amara. "Control System Design." In Modeling and Control of Magnetic Fluid Deformable Mirrors for Adaptive Optics Systems, 165–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32229-7_6.

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Wu, Zhizheng, Azhar Iqbal, and Foued Ben Amara. "Decentralized PID Controller Design." In Modeling and Control of Magnetic Fluid Deformable Mirrors for Adaptive Optics Systems, 189–225. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32229-7_7.

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Wu, Zhizheng, Azhar Iqbal, and Foued Ben Amara. "Centralized Optimal Controller Design." In Modeling and Control of Magnetic Fluid Deformable Mirrors for Adaptive Optics Systems, 227–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32229-7_8.

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Biedrzycki, Rafał, Jarosław Arabas, Agata Jasik, Michał Szymański, Paweł Wnuk, Piotr Wasylczyk, and Anna Wójcik-Jedlińska. "Application of Evolutionary Methods to Semiconductor Double-Chirped Mirrors Design." In Parallel Problem Solving from Nature – PPSN XIII, 761–70. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10762-2_75.

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Han, Cheng Shun, Long Jiang Zhang, and Shen Dong. "Research on Mathematical Models of New Diamond Turning for Non-Axisymmetric Aspheric Mirrors." In Optics Design and Precision Manufacturing Technologies, 35–38. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-458-8.35.

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Buis, Ernst-Jan, Marco Beijersbergen, Giuseppe Vacanti, Marcos Bavdaz, and David Lumb. "Design aspects of grazing angle multilayer mirrors for soft γ-rays." In Focusing Telescopes in Nuclear Astrophysics, 105–13. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/978-1-4020-5304-7_12.

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Wu, Zhizheng, Azhar Iqbal, and Foued Ben Amara. "Design of a Magnetic Fluid Deformable Mirror and Experimental Model Validation." In Modeling and Control of Magnetic Fluid Deformable Mirrors for Adaptive Optics Systems, 127–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32229-7_5.

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Yang, Jinsheng, Yuanyuan Wang, Xuejun Rao, Ling Wei, Xiqi Li, and Yi He. "Optical Design of Adaptive Optics Confocal Scanning Laser Ophthalmoscope with Two Deformable Mirrors." In Advances in Experimental Medicine and Biology, 385–92. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55231-6_50.

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Carfagni, Monica, and Luca Landi. "A Rendering-Based CAD Method For The Design And Testing Of Rearview Mirrors." In From Geometric Modeling to Shape Modeling, 115–26. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-0-387-35495-8_9.

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Conference papers on the topic "Mirrors – Design"

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Lee, Seung J., Amy M. Bilton, and Steven Dubowsky. "On the Kinematics of Solar Mirrors Using Massively Parallel Binary Actuation." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28875.

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Precision mirrors are required for effective solar energy collectors. Manufacturing such mirrors and making them robust to disturbances such as thermal gradients is expensive. In this paper, the use of parallel binary actuation to control the shape of mirrors for solar concentrators is explored. The approach embeds binary actuators in a compliant mirror substructure. Actuators are deployed in a specified pattern to correct the mirror shape. The analysis for binary-actuated compliant mirror structures is presented. Analytical models are developed for one-dimensional and two-dimensional compliant structures with embedded binary actuators. These analytical models are validated using finite element analysis and experimental studies. The models and experiments demonstrate the capabilities of binary actuated mirrors. System workspace is explored, the principle of superposition required for their control is demonstrated, as is the mirror ability to correct its figure.
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YANG, Fei, Haibo JIANG, and Hongchao ZHAO. "Topology optimization design of cradle of GSSMP." In Large Mirrors and Telescopes, edited by Xiaoliang Ma, Bin Fan, Xiangang Luo, Adrian Russell, and Yongjian Wan. SPIE, 2019. http://dx.doi.org/10.1117/12.2506583.

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Li, Lifang, Andres Kecskemethy, A. F. M. Arif, and Steven Dubowsky. "A Novel Approach for Designing Parabolic Mirrors Using Optimized Compliant Bands." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-47096.

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Parabolic concentrator mirrors are an important component of many solar energy systems, particularly solar mirror collectors. Precision parabolic mirrors are expensive to fabricate and to transport. Here, a new concept for designing and fabricating precision parabolic mirrors is presented. The mirror is formed from a thin flat very flexible metal sheet with a highly reflective surface. Attached to the rear surface of the mirror sheet is a backbone band whose figure is optimized to form the reflective sheet into a precision parabola when its two ends are pulled toward each other. An analytical model to optimize the shape of the band is presented. The validity of the concept is demonstrated using Finite Element Analysis and laboratory experiments. The concept would permit flat mirror elements to be easily fabricated and efficiently packaged and shipped to field sites and assembled into the parabolic trough concentrators with potentially substantial costs reductions compared with conventional methods.
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Garcia, Ernest J., Marc A. Polosky, and Gerard E. Sleefe. "Design of Mechanically-Latched Micromirror Arrays." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33312.

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This paper describes the design of silicon surface micromachined mirrors that were conceived for operation as part of an extremely large array of mirrors. Such an array has direct application to space-based imaging. For example, in certain spectrometer instrument applications an array of micromirrors is needed to optically switch selected portions of an incoming signal. The mirror array is used to direct selected portions of the signal into the instrument for spectrographic analysis. One technique used to address mirror elements within a large array requires that individual mirror elements can be mechanically latched. This paper will describe the design of a silicon surface micromachined micromirror device with a latching mechanism positioned entirely beneath and within the perimeter of the mirror element.
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Chan, Nicholas, Miki Lee, Haijun Lee, Thomas D. Wang, and Kenn R. Oldham. "Multiple Harmonic Lissajous Scanning Patterns for Endomicroscopy With Parametrically-Resonant Micro-Mirrors." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-71280.

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Abstract Parametrically-resonant micro-mirrors have proven highly effective in generating large amplitude, high-frequency motion for laser scanning in endoscopic microscopy, using Lissajous scan patterns to create a 2D image. However, Lissajous scanning produce low scanning density at the center of an image. In this work, a strategy for exciting additional harmonic behavior in a parametrically-resonant electrostatic micro-mirror is identified. The mirror’s nonlinear dynamics produce substantial changes in natural frequency with bias voltage. This allows a biased, duty-cycled square wave to produce higher harmonic oscillations that can be naturally synchronized with primary resonance in integer ratios. This in turn allows for alternate scanning distributions in 2D imaging that increase pixel sampling near the center of an image. In simulation, use of a biased square wave signal is found to be capable of producing steady-state oscillations at first and third harmonics of natural frequency for a micro-mirror operated via parametric resonance. Multiple harmonic motion is also realized without increasing input voltage amplitude beyond nominal amplitude, with a greater than 50% reduction fill time for the center of the imaging region. Parameterized relationships between input and output oscillations are identified, sensitivity of output trajectory to model variation, and impact on scanning density for a 2D MEMS micro-mirror are briefly described.
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Fan, Xuewu, Lei Wang, Dongwei Ni, and Yuming Wang. "Optical design of long transmission type ultraviolet detection system." In Large Mirrors and Telescopes, edited by Xiaoliang Ma, Bin Fan, Xiangang Luo, Adrian Russell, and Yongjian Wan. SPIE, 2019. http://dx.doi.org/10.1117/12.2504873.

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Li, Kexin, Lixin Zheng, Changshun Liu, Xiao Li, and Zhenghong Tang. "A prime focus corrector design for liquid mirror telescope." In Large Mirrors and Telescopes, edited by Xiaoliang Ma, Bin Fan, Xiangang Luo, Adrian Russell, and Yongjian Wan. SPIE, 2019. http://dx.doi.org/10.1117/12.2504951.

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Zhao, Hongchao, Fei Yang, Peng Guo, Qichang An, Haibo Jiang, and Jingxu Zhang. "Preliminary design of moment correction system for large optical components." In Large Mirrors and Telescopes, edited by Xiaoliang Ma, Bin Fan, Xiangang Luo, Adrian Russell, and Yongjian Wan. SPIE, 2019. http://dx.doi.org/10.1117/12.2507338.

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Li, Fu, Jianfeng Yang, Wenqiang Yang, Yi Sun, and Chongsen Qian. "Mechanical design of zoom optical system for deep space exploration." In Large Mirrors and Telescopes, edited by Xiaoliang Ma, Bin Fan, Xiangang Luo, Adrian Russell, and Yongjian Wan. SPIE, 2019. http://dx.doi.org/10.1117/12.2504761.

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Yang, Jianfeng, Fu Li, Guoqing Chen, Juan Lv, Zhizhou Lu, and Xingfeng Wang. "Design of the front window of full-disc vector magnetograph." In Large Mirrors and Telescopes, edited by Xiaoliang Ma, Bin Fan, Xiangang Luo, Adrian Russell, and Yongjian Wan. SPIE, 2019. http://dx.doi.org/10.1117/12.2504797.

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Reports on the topic "Mirrors – Design"

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Dale, Gregory E., Michael Andrew Holloway, and Elias Noel Pulliam. Water Cooled Mirror Design. Office of Scientific and Technical Information (OSTI), March 2015. http://dx.doi.org/10.2172/1177180.

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Butlin, B. Mirror Sub-Assembly End-Effector Design. Office of Scientific and Technical Information (OSTI), January 2007. http://dx.doi.org/10.2172/902232.

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Howells, M. R. Some ideas on the choice of designs and materials for cooled mirrors. Office of Scientific and Technical Information (OSTI), February 1995. http://dx.doi.org/10.2172/88787.

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Berwald, D. H., R. H. Whitley, J. K. Garner, R. J. Gromada, T. J. McCarville, R. W. Moir, J. D. Lee, et al. Updated reference design of a liquid metal cooled tandem mirror fusion breeder. Office of Scientific and Technical Information (OSTI), September 1985. http://dx.doi.org/10.2172/5117788.

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Hamilton, R., and G. L. Tietbohl. Design of a {O}94 cm mirror mount for the Petawatt Project on Nova. Office of Scientific and Technical Information (OSTI), October 1995. http://dx.doi.org/10.2172/188633.

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Moore, James D., Brian G. Patrick, Surya Chodimella, Dan Marker, and Brett DeBlonk. Design and Testing of a One-Meter Membrane Mirror with Active Boundary Control (Conference Proceedings). Fort Belvoir, VA: Defense Technical Information Center, August 2005. http://dx.doi.org/10.21236/ada449443.

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Brown, David A. Medusa's Mirror: Stepping Forward to Look Back Future UAV Design Implications from the 21st Century Battlefield"". Fort Belvoir, VA: Defense Technical Information Center, December 1997. http://dx.doi.org/10.21236/ada339467.

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Estrada, Jorge. Ruthless Desires of Living Together in Roberto Bolaño’s 2666: Conviviality between Potestas and Potentia. Maria Sibylla Merian Centre Conviviality-Inequality in Latin America, March 2022. http://dx.doi.org/10.46877/estrada.2022.42.

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A desire to live together is perhaps a key idea in Roberto Bolaño’s narratives. His characters are constantly negotiating their involvement in diverse societies amid the historical catastrophes of the twentieth century, so this desire becomes highly differentiated. It undergoes perspectival shifts and creates “mirror games”, which express scepticism towards universalising forms and trigger reflections on history and modernity. In this working paper, I examine how, in 2666, the cosmopolitan desire of a self-legislating and self-authorizing individual is disassembled and superseded by a convivial framework and a relational subject that is crossed by diverse determining forces. This transition is correlated to Bolaño’s diagnosis of late capitalism, in which a matrix of domination that worked with the logic of potestas is replaced by the channelling of potentia, i.e. an apparatus for capturing a flow of lives whose features only come to light in forensic discourse and project the fictional city of Santa Teresa.
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Hicks, Jacqueline. Examples of 'Systems Thinking' Projects in International Development. Institute of Development Studies, March 2022. http://dx.doi.org/10.19088/k4d.2022.067.

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A “systems thinking” (ST) approach generally recognises that international development processes are complex, inter-related, non-linear, and constantly changing. They involve many different types of actors, all with different levels of power. ST change methods try to mirror these qualities, and move away from more conventional project design and implementation that use simple linear input-output-impact project logic. Thus, this rapid literature review seeks to find out what are some examples of ‘systems thinking’ projects in international development. The aim of this rapid review is to provide concrete examples of how ST shows up in the project design and management processes that are typically used by people working in the international development sector. These include project management arrangements, evaluation indicators, results frameworks, budget allocations and procurement, country diagnostics, and the foundational analysis that informs project design. The examples found were mostly extracted from donor project documents. Different definitions of ST may emphasise different elements. An attempt was made to find a range of projects from different sectors, and to go beyond projects that exemplified “Market Systems Development” and “Adaptive Management,” for which there are already repositories of project examples (see Further Resources).The inclusion of the projects in this review does not imply that they were successful, only that they contain some evidence of ST in them. Most of the projects identified have a further library of documents, including evaluations, that give more detailed information about their successes and failures.
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Heathman, J. H., and J. W. Wohlwend. Mirror Fusion Test Facility-B (MFTF-B) axicell configuration: NbTi magnet system. Design and analysis summary. Volume 1. Office of Scientific and Technical Information (OSTI), May 1985. http://dx.doi.org/10.2172/5292610.

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