Novel Large Area Applications Using Optical MEMS

Viereck, Volker; Li, Q.; Ackermann, Jörg; Schwank, Alexander; Araújo, Samuel; Jakel, A.; Werner, S.; Dharmarasu, N.; Schmid, J.; Hillmer, Hartmut

doi:10.1109/omems.2007.4373837

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…We proposed the methodology in 2003 [14][15][16][17] and research work has been published subsequently. [18][19][20] Figure 1 illustrates a MEMS-based active window in a room providing a smart personal environment beneficial for users. For intuitive reasons, the micromirrors are shown by unrealistically large black bars in the window for clear identification.…”

Section: Different Concepts For Smart Windows: Reviewing Today's Stat...mentioning

confidence: 99%

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Optical MEMS-based micromirror arrays for active light steering in smart windows

Hillmer

Al-Qargholi

Khan

et al. 2018

Jpn. J. Appl. Phys.

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Different concepts for active windows for dynamic light regulation and vibrant climatization support in buildings are compared, followed by a MEMS concept using millions of micromirrors inside insulation or vacuum glazing to guide and control light by electrostatic mirror actuation. The concept enables energy saving, tailored personalized lighting, security, and smart personalized environments in buildings. The window transmission is controlled continuously, showing the eye a variable-tone pane. The amount, direction, and degree of steering of the guided light are tailored to winter, summer, and variable daytime requirements, protecting rooms and persons inside from sun-light while providing tailored natural daylight illumination. The concept is based on reflection, in contrast to existing concepts based on absorption. These micromirror arrays have been designed, fabricated, and characterized. Experimental results on electrostatic actuation voltages, extrapolated lifetime, power consumption, and heat impact regulation are presented.

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Section: Different Concepts For Smart Windows: Reviewing Today's Stat...mentioning

confidence: 99%

“…[22][23][24]50) This review paper is based on a recent conference paper (MOC) and also contains material that has already been published. 16,[18][19][20][21][50][51][52][53] However, the content of Sects. 4-6 including all figures in these sections are based on new data.…”

Section: Functionality Of Dynamic Windows Based On Mems Micromirror A...mentioning

confidence: 99%

Optical MEMS-based micromirror arrays for active light steering in smart windows

Hillmer

Al-Qargholi

Khan

et al. 2018

Jpn. J. Appl. Phys.

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“…Today they are already applied in many cases: For example as barcode scanner [4], or in projectors [5]. We have already shown that the possibility to create micromirror arrays in principle [6]. Today we want to present our latest results.…”

Section: Introductionmentioning

confidence: 99%

Development of electrostatically driven micromirror arrays for daylight guiding on large areas

Jakel

Viereck

et al. 2009

2009 IEEE/LEOS International Conference on Optical MEMS and Nanophotonics

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“…Light steering micromirrors have been developed at INA (Institute of Nanotechnologies und Analytics), University of Kassel [9], [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Light concentrating micromirror arrays for photovoltaics

et al. 2008

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Micro-opto-electromechanical systems (MOEMS) based on micromechanical mirrors can be used as key elements for light guiding, steering and concentration. We propose micromechanical mirror arrays for light concentration on photovoltaic modules. The semiconductor materials for solar cells are the most expensive components of a photovoltaic system. One of the ways to reduce cost is to use light concentration by focusing sunlight onto small solar cell areas using optical components such as lens systems. The whole system requires an external rotation mechanism to track the suns position. As an alternative, we propose and implemented micromachined mirror arrays to concentrate light. This allows precise dynamic light steering onto the solar cell module. These micromirror arrays can be electrostatically tuned to track the sun position or the maximum of the brightness distribution in the sky. The micromirror arrays are located in a sealed environment and, therefore, insensitive to external influences, such as atmosphere and wind. The advantages of the micromachined mirrors based concentrator photovoltaic systems are dynamic light steering onto solar cells, mass production compatibility, long lifetime and low cost. The concept of the micromachined mirror arrays will be presented.

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Novel Large Area Applications Using Optical MEMS

Cited by 7 publications

References 3 publications

Optical MEMS-based micromirror arrays for active light steering in smart windows

Optical MEMS-based micromirror arrays for active light steering in smart windows

Development of electrostatically driven micromirror arrays for daylight guiding on large areas

Light concentrating micromirror arrays for photovoltaics

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