Publications related to Focus (optics)

Electrically Tunable PDMS Lenses Using Integrated mm-Scale Dielectric Elastomer Actuators

We report on the modelling, fabrication and testing of small arrays of mm-diameter PDMS lenses whose focal length can be electrically tuned. The lenses consist of an array of 1 to 3 mm diameter electroactive polymer actuators bonded to a socket that provid ...

Messe Bremen-Hvg Hanseatische Veranstaltungs-Gmbh, Findorffstrasse 101, Bremen, 28215, Germany2010

Experimental demonstration of ray-optical refraction with confocal lenslet arrays

Toralf Scharf

We observe imaging through windows comprising pairs of confocal lenslet arrays that have different focal lengths but that are otherwise identical. Image space is stretched in the longitudinal direction only. Such windows are examples of METATOYs, optical c ...

Optical Society of America2010

Extended depth-of-focus by digital holographic microscopy

Christian Depeursinge, Tristan Colomb, Etienne Cuche, Nicolas Pavillon, Jonas Kühn

A recurrent problem in microscopy is the finite depth-of-focus linked to the NA of microscope objectives. Digital holographic microscopy (DHM) has the unique feature of being able to numerically change the focus from a single hologram without the need of m ...

Optical Society of America2010

High-resolution soft X-ray beamline ADRESS at the Swiss Light Source for resonant inelastic X-ray scattering and angle-resolved photoelectron spectroscopies

Marco Grioni, Thorsten Schmitt, Xiao Wang

The concepts and technical realisation of the high-resolution soft X-ray beamline ADRESS operating in the energy range from 300 to 1600 eV and intended for resonant inelastic X-ray scattering (R1XS) and angle-resolved photoelectron spectioscopy (ARPES) are ...

International Union of Crystallography2010

Digital phase conjugation of second harmonic radiation emitted by nanoparticles in turbid media

Demetri Psaltis, Ye Pu, Rachel Grange, Chia-Lung Hsieh

We demonstrate focusing coherent light on a nanoparticle through turbid media based on digital optical phase conjugation of second harmonic generation (SHG) field from the nanoparticle. A SHG active nanoparticle inside a turbid medium was excited at the fu ...

2010

Progress On The Iter Upper Launcher Millimeter Wave Design And Testing

René Chavan, Federico Alberto Alfredo Felici, Frédéric Dolizy

The main purpose of the ITER ECH upper launcher is to control magnetohydrodynamic activity, in particular neoclassical tearing modes, in the plasma. The mm-wave optical system is optimized to insure that the eight RF beams are all focused to a small beam w ...

World Scientific Publ Co Inc, 687 Hartwell St, Teaneck, Nj 07666 Usa2009

Progress On The Iter Upper Launcher Millimeter Wave Design And Testing

René Chavan, Federico Alberto Alfredo Felici, Frédéric Dolizy

2009

High Resolution Interference Microscopy: 3D measurement of focused light at 405nm applied to optical disc

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

High capacity data storage on DVD and optical discs is based on focused light beams. The characterization of light fields within the focus point is a very difficult task, which requires a high-resolution method like scanning near field optical microscopy ( ...

2009

Design status of the ITER ECRH upper launcher mm-wave system

René Chavan, Federico Alberto Alfredo Felici, Jean-Daniel Landis, Frédéric Dolizy, Francisco Sanchez, Robert Bertizzolo

The purpose of the ITER electron cyclotron resonance heating (ECRH) upper launcher (UL), or antennae will be to provide localised current drive by accurately directing mm-wave beams up to 2MW, out of the four allocated upper port plugs, at chosen rational ...

Elsevier2009

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Focus (optics)

Electrically Tunable PDMS Lenses Using Integrated mm-Scale Dielectric Elastomer Actuators

Experimental demonstration of ray-optical refraction with confocal lenslet arrays

Extended depth-of-focus by digital holographic microscopy

High-resolution soft X-ray beamline ADRESS at the Swiss Light Source for resonant inelastic X-ray scattering and angle-resolved photoelectron spectroscopies

Digital phase conjugation of second harmonic radiation emitted by nanoparticles in turbid media

Progress On The Iter Upper Launcher Millimeter Wave Design And Testing

Progress On The Iter Upper Launcher Millimeter Wave Design And Testing

High Resolution Interference Microscopy: 3D measurement of focused light at 405nm applied to optical disc

Design status of the ITER ECRH upper launcher mm-wave system

Ultrathin four-reflection imager

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Chat with Graph Search

Electrically Tunable PDMS Lenses Using Integrated mm-Scale Dielectric Elastomer Actuators

Experimental demonstration of ray-optical refraction with confocal lenslet arrays

Ultrathin four-reflection imager

High-resolution soft X-ray beamline ADRESS at the Swiss Light Source for resonant inelastic X-ray scattering and angle-resolved photoelectron spectroscopies

Digital phase conjugation of second harmonic radiation emitted by nanoparticles in turbid media

Progress On The Iter Upper Launcher Millimeter Wave Design And Testing

Extended depth-of-focus by digital holographic microscopy

Progress On The Iter Upper Launcher Millimeter Wave Design And Testing

High Resolution Interference Microscopy: 3D measurement of focused light at 405nm applied to optical disc

Design status of the ITER ECRH upper launcher mm-wave system