Results 71 to 80 of about 1,745 (136)

Construction kit for microoptical systems on the basis of microoptical benches

Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS 2003., 2004
Manufacturing test structures of microsensors and microactuators is very expensive in terms of time and materials. In a conventional design process, this limits the number of design variants to be considered. For this reason, computer-supported design techniques are gaining importance in microsystems technologies.
Sieber, I., Gengenbach, U., Hofmann, A.
openaire   +2 more sources

A microoptical scanner

SPIE Proceedings, 2006
Rotational prisms or reflectors are used for conventional optical scanners. Their disadvantages are large size, low scanning speed and high power consumption. In the paper a microoptical scanner based on the integration of piezoelectrical driver and microlens arrays is described.
Ying Huang, Sihai Chen, Xinjian Yi, Sihua Xiang   +3 more
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Tunable Pneumatic Microoptics

Journal of Microelectromechanical Systems, 2008
A new class of tunable and actuated microoptical devices is presented: pneumatic microoptics. Using microelectromechanical system fabrication technology extended by the use of polydimethylsiloxane (PDMS) membranes, tunable microlenses, and lens arrays, actuated micromirrors with large tilt angles and tip-tilt piston mirrors have been designed and ...
Werber, Armin, Zappe, Hans
openaire   +3 more sources

Electrowetting for Tunable Microoptics

Journal of Microelectromechanical Systems, 2008
The design, fabrication, and optical properties of tunable liquid microoptical components based on electrowetting are presented. Two optical microsystems are discussed: a single liquid microlens with tunable focal length, centered and stabilized in a micromachined positioning structure, and laterally repositionable tunable liquid microlens arrays.
Krogmann, Florian, Mönch, Wolfgang, Zappe, Hans   +2 more
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Microoptics: introduction by the feature editors

Applied Optics, 1990
This introduction briefly defines the scope of the feature in this 10 Nov. 1990 issue on microoptics. The first part of the feature, on gradient-index imaging systems, has appeared in the 1 Oct. 1990 issue. All feature papers are based on presentations made at the joint conference MOC/GRIN '89.
Erich W. Marchand, Hiroshi Nishihara
openaire   +3 more sources

Programmable microoptics for ultrashort pulses

SPIE Proceedings, 2010
Programmable liquid-crystal devices for high-resolution spatial shaping of ultrashort-pulsed laser beams promise to be an alternative approach to passive microoptical structures. In former experiments we demonstrated that depositionfabricated nanolayer lenses and axicons can serve as low-dispersion, damage resistant, ultrabroadband microoptical ...
Ruediger Grunwald, Martin Bock
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Aberration losses of the microoptic directional coupler

Applied Optics, 1980
A theoretical analysis of the aberration losses of the microoptic directional coupler recently being used in optical communication systems has been carried out. We show that our results are consistent with those obtained experimentally and that the minimum insertion loss does not occur at the paraxial length (which has been used in the experiments ...
Krishna Thyagarajan, Ajoy Ghatak, Aruna Rohra   +2 more
openaire   +4 more sources

Computational optics and microoptics - a mutual benefit

Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP), 2019
Microoptics offers novel and compact implementations for imaging and sensing, however, usually with a reduced space-bandwidth product (resolution). Computational techniques can compensate for this drawback and yield high quality performance.
J. Jahns, A. Grasnick, U. Lohmann
semanticscholar   +1 more source

Photolithographic processing of hybrid glasses for microoptics

Journal of Lightwave Technology, 2003
Hybrid glass materials are used in the photolithographic fabrication of optical and optomechanical structures. Two different photolithographic hybrid glass processing methods are described. The first one is referred as photolithographic patterning and the second as direct photolithographic deforming of hybrid glass materials.
Rantala, Juha T., Tamkin, John M., Descour, Michael, R., Kärkkäinen, Ari H.O.   +4 more
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Microoptical Distance Sensor with Integrated Microoptics Applied to an Optical Microphone

IEEE Sensors, 2005., 2006
The developed fiber optical microphone (FOM) using intensity modulation of light is based on triangulation. Emitted light from an LED is directed through an optical fiber onto the membrane. The reflected light is coupled into the receiving fiber. Vibration of the membrane results in a toggling of the light spot on the receiving fiber.
M. Feldmann, Stephanus Büttgenbach
openaire   +2 more sources