The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Herbert Balke - One of the best experts on this subject based on the ideXlab platform.
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3 d modeling of pyroelectric sensor arrays part ii Modulation Transfer Function
IEEE Sensors Journal, 2008Co-Authors: GÜnter Milde, Christoph Hausler, H A Bahr, Gerald Gerlach, Herbert BalkeAbstract:The Modulation Transfer Function (MTF) for a pyroelectric infrared sensor array is determined from a finite-element simulation. Consideration of the full thermoelectromechanical coupling and use of a 3-D sensor model result in a good agreement between calculated and measured data.
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Modulation Transfer Function of pyroelectric infrared sensor arrays
IEEE Sensors, 2004Co-Authors: GÜnter Milde, Christoph Hausler, Joerg Drescher, Herbert Balke, Gerald Gerlach, H A BahrAbstract:Pyroelectric infrared sensor arrays are imaging devices for infrared radiation that utilise the temperature dependency of the remanent polarisation in pyroelectric materials. We use the finite element method (FEM) for the calculation of the coupled thermo-electro-mechanical fields for a 3D sensor model. From the simulation data we derive the Modulation Transfer Function.
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Modulation Transfer Function of a pyroelectric sensor array based on a finite element model
Ferroelectrics, 2003Co-Authors: GÜnter Milde, Herbert Balke, Gerald Gerlach, Jorg Drescher, H A BahrAbstract:Pyroelectric infrared sensor arrays are imaging devices for infrared radiation that utilize the temperature dependence of the remanent in polarization in pyroelectric materials. We use the finite element method for the calculation of the coupled thermo-electro-mechanical fields for an instance of a linear sensor array, derive the Modulation Transfer Function from the simulation data, and compare the result to an analytical solution.
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calculating the Modulation Transfer Function of a pyroelectric infrared sensor array
Proceedings of SPIE, 2001Co-Authors: GÜnter Milde, Joerg Drescher, Gerald Gerlach, Herbert BalkeAbstract:Pyroelectric infrared sensor arrays are imaging devices for infrared radiation that utilize the temperature dependence of the remanent polarization in pyroelectric materials. An analytic calculation of the Modulation Transfer Function of a pyroelectric sensor array was carried out for a simplified model. More realistic models, however, require the use of numerical methods like the finite element method. We present a method to derive the Modulation Transfer Function from simulation data of a finite-element model and compare the results of the analytic and numerical calculations for a test model.© (2001) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
GÜnter Milde - One of the best experts on this subject based on the ideXlab platform.
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3 d modeling of pyroelectric sensor arrays part ii Modulation Transfer Function
IEEE Sensors Journal, 2008Co-Authors: GÜnter Milde, Christoph Hausler, H A Bahr, Gerald Gerlach, Herbert BalkeAbstract:The Modulation Transfer Function (MTF) for a pyroelectric infrared sensor array is determined from a finite-element simulation. Consideration of the full thermoelectromechanical coupling and use of a 3-D sensor model result in a good agreement between calculated and measured data.
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Modulation Transfer Function of pyroelectric infrared sensor arrays
IEEE Sensors, 2004Co-Authors: GÜnter Milde, Christoph Hausler, Joerg Drescher, Herbert Balke, Gerald Gerlach, H A BahrAbstract:Pyroelectric infrared sensor arrays are imaging devices for infrared radiation that utilise the temperature dependency of the remanent polarisation in pyroelectric materials. We use the finite element method (FEM) for the calculation of the coupled thermo-electro-mechanical fields for a 3D sensor model. From the simulation data we derive the Modulation Transfer Function.
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Modulation Transfer Function of a pyroelectric sensor array based on a finite element model
Ferroelectrics, 2003Co-Authors: GÜnter Milde, Herbert Balke, Gerald Gerlach, Jorg Drescher, H A BahrAbstract:Pyroelectric infrared sensor arrays are imaging devices for infrared radiation that utilize the temperature dependence of the remanent in polarization in pyroelectric materials. We use the finite element method for the calculation of the coupled thermo-electro-mechanical fields for an instance of a linear sensor array, derive the Modulation Transfer Function from the simulation data, and compare the result to an analytical solution.
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calculating the Modulation Transfer Function of a pyroelectric infrared sensor array
Proceedings of SPIE, 2001Co-Authors: GÜnter Milde, Joerg Drescher, Gerald Gerlach, Herbert BalkeAbstract:Pyroelectric infrared sensor arrays are imaging devices for infrared radiation that utilize the temperature dependence of the remanent polarization in pyroelectric materials. An analytic calculation of the Modulation Transfer Function of a pyroelectric sensor array was carried out for a simplified model. More realistic models, however, require the use of numerical methods like the finite element method. We present a method to derive the Modulation Transfer Function from simulation data of a finite-element model and compare the results of the analytic and numerical calculations for a test model.© (2001) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Bob Gravelle - One of the best experts on this subject based on the ideXlab platform.
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off axis sensor Modulation Transfer Function measurement using band limited laser speckle
Frontiers in Optics 2009 Laser Science XXV Fall 2009 OSA Optics & Photonics Technical Digest (2009) paper CThB6, 2009Co-Authors: Xi Chen, Doug Fettig, Bob Gravelle, Gennadiy AgranovAbstract:We present a new methodology for measurement of off-axis sensor Modulation Transfer Function using band-limited laser speckle and two-dimensional generalized sampling theorem. The effect of chief ray angle on sensor Modulation Transfer Function is studied.
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sensor Modulation Transfer Function measurement using band limited laser speckle
Optics Express, 2008Co-Authors: Xi Chen, Nicholas George, Gennadiy Agranov, Bob GravelleAbstract:A new methodology for image sensor Modulation Transfer Function measurement using band-limited laser speckle is presented. We use a circular opal milk glass diffuser illuminated by a 5mW He-Ne laser and a linear polarizer to generate band-limited speckle on the sensor. The power spectral density cut-off frequency of the speckle is chosen to be twice that of the sensor Nyquist frequency by placing the sensor at the specific Z location along the optical axis. For the speckle input, we calculate the power spectral density at the sensor using the Rayleigh-Sommerfeld integral and then measure the output power spectral density for the speckle pattern captured by the sensor. With these data, the two-dimensional image sensor Modulation Transfer Function (MTF) is calculated.
H A Bahr - One of the best experts on this subject based on the ideXlab platform.
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3 d modeling of pyroelectric sensor arrays part ii Modulation Transfer Function
IEEE Sensors Journal, 2008Co-Authors: GÜnter Milde, Christoph Hausler, H A Bahr, Gerald Gerlach, Herbert BalkeAbstract:The Modulation Transfer Function (MTF) for a pyroelectric infrared sensor array is determined from a finite-element simulation. Consideration of the full thermoelectromechanical coupling and use of a 3-D sensor model result in a good agreement between calculated and measured data.
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Modulation Transfer Function of pyroelectric infrared sensor arrays
IEEE Sensors, 2004Co-Authors: GÜnter Milde, Christoph Hausler, Joerg Drescher, Herbert Balke, Gerald Gerlach, H A BahrAbstract:Pyroelectric infrared sensor arrays are imaging devices for infrared radiation that utilise the temperature dependency of the remanent polarisation in pyroelectric materials. We use the finite element method (FEM) for the calculation of the coupled thermo-electro-mechanical fields for a 3D sensor model. From the simulation data we derive the Modulation Transfer Function.
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Modulation Transfer Function of a pyroelectric sensor array based on a finite element model
Ferroelectrics, 2003Co-Authors: GÜnter Milde, Herbert Balke, Gerald Gerlach, Jorg Drescher, H A BahrAbstract:Pyroelectric infrared sensor arrays are imaging devices for infrared radiation that utilize the temperature dependence of the remanent in polarization in pyroelectric materials. We use the finite element method for the calculation of the coupled thermo-electro-mechanical fields for an instance of a linear sensor array, derive the Modulation Transfer Function from the simulation data, and compare the result to an analytical solution.
Xi Chen - One of the best experts on this subject based on the ideXlab platform.
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off axis sensor Modulation Transfer Function measurement using band limited laser speckle
Frontiers in Optics 2009 Laser Science XXV Fall 2009 OSA Optics & Photonics Technical Digest (2009) paper CThB6, 2009Co-Authors: Xi Chen, Doug Fettig, Bob Gravelle, Gennadiy AgranovAbstract:We present a new methodology for measurement of off-axis sensor Modulation Transfer Function using band-limited laser speckle and two-dimensional generalized sampling theorem. The effect of chief ray angle on sensor Modulation Transfer Function is studied.
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sensor Modulation Transfer Function measurement using band limited laser speckle
Optics Express, 2008Co-Authors: Xi Chen, Nicholas George, Gennadiy Agranov, Bob GravelleAbstract:A new methodology for image sensor Modulation Transfer Function measurement using band-limited laser speckle is presented. We use a circular opal milk glass diffuser illuminated by a 5mW He-Ne laser and a linear polarizer to generate band-limited speckle on the sensor. The power spectral density cut-off frequency of the speckle is chosen to be twice that of the sensor Nyquist frequency by placing the sensor at the specific Z location along the optical axis. For the speckle input, we calculate the power spectral density at the sensor using the Rayleigh-Sommerfeld integral and then measure the output power spectral density for the speckle pattern captured by the sensor. With these data, the two-dimensional image sensor Modulation Transfer Function (MTF) is calculated.