Sentences with word «wavefront»

The first is the requirement for simultaneous measurement of wavefront changes with two cameras.

On much finer scales — down to the nanoscale — these measurements are beyond the capabilities of normal wavefront sensor technology.

Nemex Resources has dropped plans to acquire a majority stake in Wavefront Biometric Technologies after losing support from its major shareholders.

For wavefront shaping, they sent various patterns of light through the fiber to a camera at the other end and recorded exactly how that specific fiber changed light that passed through.

These corrections are made through a process called wavefront sensing and control, which aligns the mirrors to within tens of nanometers.

The instrument will be equipped with advanced high contrast imaging technologies embedded in a coronagraph with a deformable mirror, multi-star wavefront control, and specialized post-processing techniques.

The extent to which wavefront aberrations upstream of the coronagraph are corrected and calibrated drives coronagraphic performance.

Experience with wavefront sensor and deformable mirror interfaces for wide - field adaptive optics systems

To reach new levels of precision, the researchers considered using the well - studied resonance behavior of quasiparticles known as surface plasmon polaritons (SPPs), which respond to even extremely small - scale wavefront distortions.

The left side of the plot shows the corresponding RMS wavefront error for a coronagraph using a 64 × 64 element deformable mirror.

On - sky demonstration of matched filters for wavefront measurements using ELT - scale elongated laser guide stars

Subiaco - based iron ore explorer Nemex Resources has announced plans to buy all the shares it doesn't already own in Wavefront Biometric Technologies.

Our virtual surround sound combines Digital Signal Processing and S - Force PRO Front Surround with wavefront technology to emulate a natural, three - dimensional sound field, all from a single soundbar and subwoofer.

«There's lots of companies taking older equipment and building connectivity into it,» says Alan Swain, vice-president of technology and operations at Wavefront, Canada's Centre of Excellence for Wireless Commercialization and Research.

Because the multimode fibers used for the endoscope scramble light, the researchers applied a method called wavefront shaping to convert the scrambled light into images.

Using an approach known as wavefront shaping they were able to focus the light inside the photopolymer so that only a small 3D point was cured.

It could possibly replace some of the other wavefront sensors currently used in astronomy, microscopy and vision science.

The extent to which wavefront aberrations upstream of the coronagraph are corrected and calibrated drives coronagraphic perfo... ▽ More High throughput, low inner working angle (IWA) phase masks coronagraphs are essential to directly image and characterize (via spectroscopy) earth - like planets.

To prevent starlight leakage at the inner working angle of a phase mask coronagraph, we have introduced a Lyot - based low - order wavefront sensor (LLOWFS), which senses aberrations using the rejected starlight diffracted at the Lyot plane.

We demonstrate use of a matched filter algorithm for the processing of elongated laser guide star (LGS) Shack - Hartmann images, using the CANARY adaptive optics instrument on the 4.2 m William Herschel Telescope and the European Souther... ▽ More The performance of adaptive optics systems is partially dependant on the algorithms used within the real - time control system to compute wavefront slope measurements.

Abstract: The performance of adaptive optics systems is partially dependant on the algorithms used within the real - time control system to compute wavefront slope measurements.

Fortunately, scientists and engineers at TMT and its suppliers have also successfully developed and tested the specialized programs and electronics (field - programmable gate arrays) that will derive the correct commands from the measurements provided from the adaptive optics wavefront sensors.

The VisAO camera and MagAO wavefront sensors (all optics inside dark ring) that were used to make the visible wavelength images.

Subiaco - based Nemex Resources has abandoned plans to wholly acquire Wavefront Biometric Technologies, but will instead raise capital and secure a majority stake in the target.

This is exactly what would happen if they were passing through both slits as a wave, and the two wavefronts interfered with one another, so the experiment is usually taken as evidence that photons can be both a particle and a wave.

An eye surgeon performing wavefront - guided laser vision correction surgery (a process that was improved by technology developed to shape Webb's mirrors) similarly measures and three - dimensionally maps any inconsistencies in the cornea.

«These amazingly fine measurements make it possible to extract wavefront information right at the point where air, light, and surfaces interact.»

It is then possible to use basic mathematical calculations to determine the tiny changes in the actual wavefront based on these two, orthogonal intensity data points.

The simplest kind of electromagnetic beam has a plane wavefront, which means that the peaks or troughs of the beam can be connected by an imaginary plane at right angles to the beam's direction of travel.

In addition it computes and propagates wavefronts in various optical components such as mirrors, refractive lenses, zone plates,...

We have also integrated the LLOWFS in the visible high - order control loop of SCExAO, which in closed - loop operation has validated the correction of the non-common path pointing errors between the infrared science channel and the visible wavefront sensing channel with pointing residual of 0.23 mas on sky.

Such systems have multiple wavefront sensors of different types, and usually multiple deformable mirrors (DMs).

Caroline obtained her degree in physics from the University of Heidelberg, Germany in 2008 and went on to do a PhD at the Institute of Photonics, University of Strathclyde, Glasgow in 2012 with a thesis on the application of wavefront sensorless adaptive optics in advanced microscopy techniques.

On the other hand, the researchers succeeded to directly observe the concave wavefronts with a special optical microscope, which have been elusive so far.

The MagAO pyramid wavefront sensor was developed at the Arcetri Observatory in Italy.

Engineer Kent Wallace and a team from NASA's Jet Propulsion Laboratory constructed an ultra-precise infrared wavefront sensor to measure small distortions in starlight that might mask a planet.

obj format (Wavefront object) you need to have a 3D editor, e.g. 3ds Max.

Plus our new Wavefront Reconstruction Center (WRC) creates a more realistic center channel experience for greater intelligibility of vocals and midrange clarity.

The trapezoidal shaped cabinets aim the drivers and tweeters in opposing directions to produce a more realistically diffuse wavefront and wide, lifelike imaging of surround sound.

At the institute, Dr. van der Marel previously led the telescopes group, which is responsible for issues related to the optics, focus, wavefront sensing and control, and guiding for the Hubble Space Telescope and the James Webb Space Telescope (JWST), as well as the team that is responsible for the calibration and user support of the Hubble Advanced Camera for Surveys (ACS) and the Wide Field and Planetary Camera 2 (WFPC2).

One of the limitations with the direct detection of exoplanets, either with ground - or space - based coronagraphs, is pointing errors and other low - order wavefront aberrations.

Related to wavefront shaping in free - space optics, this allows to freely route light in a static silicon element, thus transforming the device into a much needed building block for field - programmable photonics.

Project Blue will demonstrate and test coronagraph and wavefront technologies similar to ones that could be used on much larger future space telescopes currently being studied by NASA (e.g., HabEX, LUVOIR), and thus help to retire technical risks and hone the observing techniques and data processing algorithms for those missions.

«Canada is the most ready country in the world for mobile payments to take root,» Rogers Communications VP David Robinson said today at the Wavefront Wireless Summit in Vancouver.

«Wavefront's focus on initiatives that accelerate the growth of companies in the wireless sector complements theirs.»

This is why Wavefront is proud to be partnering with MaRS, given the critical role they play in the Toronto area,» said Hélène Joncas, Wavefront's Vice-President, Eastern Region.

Pablo Alonso - González, who performed the experiments at nanoGUNE, highlights some of the advantages offered by the antenna device: «the excitation of graphene plasmons is purely optical, the device is compact and the phase and wavefronts of the graphene plasmons can be directly controlled by geometrically tailoring the antennas.