The Experts below are selected from a list of 270 Experts worldwide ranked by ideXlab platform

Labros Kontokostas - One of the best experts on this subject based on the ideXlab platform.

  • NanoFocus_usurf explorer_V7.0.pdf
    internal, 2017
    Co-Authors: Labros Kontokostas
    Abstract:

    . Only light from the focal plane reaches the CCD camera, with the intensity following the confocal curve (see picture below right). Thus the confocal … for viewing the surface and for locating the focal plane. The confocal mode is used for the measurement. The brightness is software based

  • EP3037226.pdf
    internal, 2017
    Co-Authors: Labros Kontokostas
    Abstract:

    propagation axis, to change the position of the focal point in depth. The focal plane can be changed while keeping the dimensions of this measurement field. [0058 … of the pinhole plate 22 enables seamless scanning of the entire surface of the sample within the image field and only the light from the focal plane reaches the CCD

T.s. Lomheim - One of the best experts on this subject based on the ideXlab platform.

  • Focal Plane signal and noise model ctia roic
    IEEE Transactions on Electron Devices, 2009
    Co-Authors: J.f. Johnson, T.s. Lomheim
    Abstract:

    A method for electrooptical sensor Focal Plane signal-to-noise analysis is developed, which consists of coupling a reset-integrator-sampler readout model to a Focal Plane unit cell detector-preamp model. The combined readout integrated circuit (ROIC) model may be used to evaluate the signal and noise of visible or infrared Focal Plane arrays that use sample-and-hold, correlated double sampling (CDS), or other sampling schemes. The analysis developed here clears up the considerable confusion regarding CDS operation by elucidating how CDS operates on both signal and noise and explains the dependence of output 1/f noise on integration and epoch times. The reset-integrator model is then coupled to a capacitive transimpedance amplifier (CTIA) preamp model, and signal and noise formulas for imagers with CTIA-CDS ROICs are developed and used to evaluate the signal and noise of example scanning and staring Focal Plane arrays.

  • Focal-Plane Signal and Noise Model–CTIA ROIC
    IEEE Transactions on Electron Devices, 2009
    Co-Authors: J.f. Johnson, T.s. Lomheim
    Abstract:

    A method for electrooptical sensor Focal Plane signal-to-noise analysis is developed, which consists of coupling a reset-integrator-sampler readout model to a Focal Plane unit cell detector-preamp model. The combined readout integrated circuit (ROIC) model may be used to evaluate the signal and noise of visible or infrared Focal Plane arrays that use sample-and-hold, correlated double sampling (CDS), or other sampling schemes. The analysis developed here clears up the considerable confusion regarding CDS operation by elucidating how CDS operates on both signal and noise and explains the dependence of output 1/f noise on integration and epoch times. The reset-integrator model is then coupled to a capacitive transimpedance amplifier (CTIA) preamp model, and signal and noise formulas for imagers with CTIA-CDS ROICs are developed and used to evaluate the signal and noise of example scanning and staring Focal Plane arrays.

J.f. Johnson - One of the best experts on this subject based on the ideXlab platform.

  • Focal Plane signal and noise model ctia roic
    IEEE Transactions on Electron Devices, 2009
    Co-Authors: J.f. Johnson, T.s. Lomheim
    Abstract:

    A method for electrooptical sensor Focal Plane signal-to-noise analysis is developed, which consists of coupling a reset-integrator-sampler readout model to a Focal Plane unit cell detector-preamp model. The combined readout integrated circuit (ROIC) model may be used to evaluate the signal and noise of visible or infrared Focal Plane arrays that use sample-and-hold, correlated double sampling (CDS), or other sampling schemes. The analysis developed here clears up the considerable confusion regarding CDS operation by elucidating how CDS operates on both signal and noise and explains the dependence of output 1/f noise on integration and epoch times. The reset-integrator model is then coupled to a capacitive transimpedance amplifier (CTIA) preamp model, and signal and noise formulas for imagers with CTIA-CDS ROICs are developed and used to evaluate the signal and noise of example scanning and staring Focal Plane arrays.

  • Focal-Plane Signal and Noise Model–CTIA ROIC
    IEEE Transactions on Electron Devices, 2009
    Co-Authors: J.f. Johnson, T.s. Lomheim
    Abstract:

    A method for electrooptical sensor Focal Plane signal-to-noise analysis is developed, which consists of coupling a reset-integrator-sampler readout model to a Focal Plane unit cell detector-preamp model. The combined readout integrated circuit (ROIC) model may be used to evaluate the signal and noise of visible or infrared Focal Plane arrays that use sample-and-hold, correlated double sampling (CDS), or other sampling schemes. The analysis developed here clears up the considerable confusion regarding CDS operation by elucidating how CDS operates on both signal and noise and explains the dependence of output 1/f noise on integration and epoch times. The reset-integrator model is then coupled to a capacitive transimpedance amplifier (CTIA) preamp model, and signal and noise formulas for imagers with CTIA-CDS ROICs are developed and used to evaluate the signal and noise of example scanning and staring Focal Plane arrays.

Daniel W. Wilson - One of the best experts on this subject based on the ideXlab platform.

  • An Achromatic Focal Plane Mask for High-Performance Broadband Coronagraphy
    Publications of the Astronomical Society of the Pacific, 2015
    Co-Authors: K. Newman, Olivier Guyon, K. Balasubramanian, R. Belikov, Nemanja Jovanovic, Frantz Martinache, Daniel W. Wilson
    Abstract:

    Developments in coronagraph technology are close to achieving the technical requirements necessary to observe the faint signal of an Earth-like exoPlanet in monochromatic light. An important remaining technological challenge is to achieve high contrast in broadband light. Coronagraph bandwidth is largely limited by chromaticity of the Focal Plane mask, which is responsible for blocking the stellar PSF. The size of a stellar PSF scales linearly with wavelength; ideally, the size of the Focal Plane mask would also scale with wavelength. A conventional hard-edge Focal Plane mask has a fixed size, normally sized for the longest wavelength in the observational band to avoid starlight leakage. The conventional mask is oversized for shorter wavelengths and blocks useful discovery space. We present a new Focal Plane mask which operates conceptually as an opaque disk occulter, but uses a phase mask technique to improve performance and solve the "size chromaticity" problem. This achromatic Focal Plane mask would maximize the potential Planet detection space without allowing starlight leakage to degrade the system contrast. Compared with a conventional opaque disk Focal Plane mask, the achromatic mask allows coronagraph operation over a broader range of wavelengths and allows the detection of exoPlanets closer to their host star. We present the generalized design for the achromatic Focal Plane mask, implementation within the Subaru Coronagraph Extreme Adaptive Optics instrument, and laboratory results which demonstrate the size-scaling property of the mask.

Ákos Zarándy - One of the best experts on this subject based on the ideXlab platform.

  • Focal Plane sensor processor chips
    2014
    Co-Authors: Ákos Zarándy
    Abstract:

    Focal-Plane sensor-processor imager devices are sensor arrays and processor arrays embedded in each other on the same silicon chip. This close coupling enables ultra-fast processing even on tiny, low power devices, because the slow and energetically expensive transfer of the large amount of sensory data is eliminated. This technology also makes it possible to produce locally adaptive sensor arrays, which can (similarly to the human retina) adapt to the large dynamics of the illumination in a single scene This book focuses on the implementation and application of state-of-the-art vision chips. It provides an overview of Focal Plane chip technology, smart imagers and cellular wave computers, along with numerous examples of current vision chips, 3D sensor-processor arrays and their applications. Coverage includes not only the technology behind the devices, but also their near- and mid-term research trends.

  • Focal-Plane Sensor-Processor Chips - Focal-Plane Sensor-Processor Chips
    2011
    Co-Authors: Ákos Zarándy
    Abstract:

    Focal-Plane sensor-processor imager devices are sensor arrays and processor arrays embedded in each other on the same silicon chip. This close coupling enables ultra-fast processing even on tiny, low power devices, because the slow and energetically expensive transfer of the large amount of sensory data is eliminated. This technology also makes it possible to produce locally adaptive sensor arrays, which can (similarly to the human retina) adapt to the large dynamics of the illumination in a single scene This book focuses on the implementation and application of state-of-the-art vision chips. It provides an overview of Focal Plane chip technology, smart imagers and cellular wave computers, along with numerous examples of current vision chips, 3D sensor-processor arrays and their applications. Coverage includes not only the technology behind the devices, but also their near- and mid-term research trends.