Patents by Inventor Uri El-Hanany
Uri El-Hanany has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10276627Abstract: A method of fabricating a solid state radiation detector method includes mechanically lapping and polishing the first and the second surfaces of a semiconductor wafer using a plurality of lapping and polishing steps. The method also includes growing passivation oxide layers by use of oxygen plasma on the top of the polished first and second surfaces in order to passivate the semiconductor wafer. Anode contacts are deposited and patterned on top of the first passivation oxide layer, which is on top of the first surface. Cathode contacts, which are either monolithic or patterned, are deposited on top of the second passivation oxide layer, which is on the second surface. Aluminum nitride encapsulation layer can be deposited over the anode contacts and patterned to encapsulate the first passivation oxide layer, while physically exposing a center portion of each anode contact to electrically connect the anode contacts.Type: GrantFiled: October 10, 2017Date of Patent: April 30, 2019Assignee: REDLEN TECHNOLOGIES, INC.Inventors: Uri El-Hanany, Adam Densmore, Saeid Taherion, Georgios Prekas, Veeramani Perumal
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Publication number: 20180033822Abstract: A method of fabricating a solid state radiation detector method includes mechanically lapping and polishing the first and the second surfaces of a semiconductor wafer using a plurality of lapping and polishing steps. The method also includes growing passivation oxide layers by use of oxygen plasma on the top of the polished first and second surfaces in order to passivate the semiconductor wafer. Anode contacts are deposited and patterned on top of the first passivation oxide layer, which is on top of the first surface. Cathode contacts, which are either monolithic or patterned, are deposited on top of the second passivation oxide layer, which is on the second surface. Aluminum nitride encapsulation layer can be deposited over the anode contacts and patterned to encapsulate the first passivation oxide layer, while physically exposing a center portion of each anode contact to electrically connect the anode contacts.Type: ApplicationFiled: October 10, 2017Publication date: February 1, 2018Inventors: Uri El-Hanany, Adam Densmore, Saeid Taherion, Georgios Prekas, Veeramani Perumal
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Patent number: 9847369Abstract: A method of fabricating a solid state radiation detector method includes mechanically lapping and polishing the first and the second surfaces of a semiconductor wafer using a plurality of lapping and polishing steps. The method also includes growing passivation oxide layers by use of oxygen plasma on the top of the polished first and second surfaces in order to passivate the semiconductor wafer. Anode contacts are deposited and patterned on top of the first passivation oxide layer, which is on top of the first surface. Cathode contacts, which are either monolithic or patterned, are deposited on top of the second passivation oxide layer, which is on the second surface. Aluminum nitride encapsulation layer can be deposited over the anode contacts and patterned to encapsulate the first passivation oxide layer, while physically exposing a center portion of each anode contact to electrically connect the anode contacts.Type: GrantFiled: February 3, 2016Date of Patent: December 19, 2017Assignee: REDLEN TECHNOLOGIES, INC.Inventors: Uri El-Hanany, Adam Densmore, Saeid Taherion, Georgios Prekas, Veeramani Perumal
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Publication number: 20160240584Abstract: A method of fabricating a solid state radiation detector method includes mechanically lapping and polishing the first and the second surfaces of a semiconductor wafer using a plurality of lapping and polishing steps. The method also includes growing passivation oxide layers by use of oxygen plasma on the top of the polished first and second surfaces in order to passivate the semiconductor wafer. Anode contacts are deposited and patterned on top of the first passivation oxide layer, which is on top of the first surface. Cathode contacts, which are either monolithic or patterned, are deposited on top of the second passivation oxide layer, which is on the second surface. Aluminum nitride encapsulation layer can be deposited over the anode contacts and patterned to encapsulate the first passivation oxide layer, while physically exposing a center portion of each anode contact to electrically connect the anode contacts.Type: ApplicationFiled: February 3, 2016Publication date: August 18, 2016Inventors: Uri EL-HANANY, Adam DENSMORE, Saeid TAHERION, Georgios PREKAS, Veeramani PERUMAL
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Patent number: 8530784Abstract: Some embodiments include methods, and systems of machining using a beam of photons. In some embodiments, a machining method to remove material in a machined region may include reducing transparency of the region to at least a predefined wavelength by irradiating the region with a first beam of photons to induce generation of free electrons in the region; and machining the region with a second beam of photons having the predefined wavelength. Other embodiments are described and claimed.Type: GrantFiled: January 28, 2008Date of Patent: September 10, 2013Assignee: Orbotech Ltd.Inventors: Uri El-Hanany, Arie Shahar, Alex Tsigelman, Zeev Gutman
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Publication number: 20110237941Abstract: A method for imaging a body, including scanning the body so as to generate a tomographic image thereof, and analyzing the tomographic image to determine a location of a region of interest (ROI) (38) within the body. The method includes providing single photon counting detector modules (40), each of the modules being configured to receive photons from a respective direction and to generate a signal in response thereto. The method further includes coupling each of the modules to a respective adjustable mount (54), adjusting each of the adjustable mounts so that the direction of the module coupled thereto is aligned with respect to the location so as to receive radiation from the ROI, operating each of the modules to receive the photons from the ROI, and, in response to the signal generated by each of the modules, generating a single photon counting image of the ROI.Type: ApplicationFiled: May 6, 2008Publication date: September 29, 2011Applicant: Orbotech Ltd.Inventors: Arie Shahar, Uri El-Hanany, Zeev Gutman, Shimon Cohen, Dan Zemer, Aharon Amrami
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Patent number: 7800071Abstract: Method, apparatus and system for reducing or preventing polarization in semiconductor radiation detectors for medical imaging. For example, an apparatus includes a semiconductor with electrodes coupled thereto, configured to generate an electrical signal in the electrodes in response to absorption of ionizing radiation in the semiconductor, wherein the absorption of the ionizing radiation generates a space charge in the semiconductor; and an infra-red (IR) generator configured to generate IR radiation of a selectable wavelength, the selectable wavelength being chosen so as to at least partially reduce an effect of the space charge on the electrical signal.Type: GrantFiled: December 8, 2009Date of Patent: September 21, 2010Assignee: Orbotech Medical Solutions Ltd.Inventors: Arie Shahar, Uri El-Hanany, Eliezer Traub, Peter Rusian, Zeev Gutman
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Publication number: 20100086098Abstract: Method, apparatus and system for reducing or preventing polarization in semiconductor radiation detectors for medical imaging. For example, an apparatus includes a semiconductor with electrodes coupled thereto, configured to generate an electrical signal in the electrodes in response to absorption of ionizing radiation in the semiconductor, wherein the absorption of the ionizing radiation generates a space charge in the semiconductor; and an infra-red (IR) generator configured to generate IR radiation of a selectable wavelength, the selectable wavelength being chosen so as to at least partially reduce an effect of the space charge on the electrical signal.Type: ApplicationFiled: December 8, 2009Publication date: April 8, 2010Inventors: Arie Shahar, Uri El-Hanany, Eliezer Traub, Peter Rusian, Zeev Gutman
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Patent number: 7663111Abstract: Apparatus for detecting radiation emitted from a number of volume elements of a body. The apparatus includes a first plurality of detector elements, each detector element being configured to output signals indicative of an intensity of radiation that is incident thereon. The apparatus also includes a first plurality of adjustable collimator channels, each adjustable collimator channel being associated with and being positioned between a respective detector element and the body, each adjustable collimator channel having a second plurality of dimensional configurations defining respective different sets of the volume elements from which emitted radiation impinges on the respective detector element. A processor computes a radiation intensity from at least a portion of the volume elements in response to the signals output by the detector elements in at least two of the dimensional configurations of the adjustable collimator channels.Type: GrantFiled: March 28, 2007Date of Patent: February 16, 2010Assignee: Orbotech Ltd.Inventors: Arie Shahar, Uri El-Hanany, Eliezer Traub, Zeev Gutman, Alexander Cherlin
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Patent number: 7652258Abstract: Method, apparatus and system for reducing or preventing polarization in semiconductor radiation detectors for medical imaging. For example, an apparatus includes a semiconductor with electrodes coupled thereto, configured to generate an electrical signal in the electrodes in response to absorption of ionizing radiation in the semiconductor, wherein the absorption of the ionizing radiation generates a space charge in the semiconductor; and an infra-red (IR) generator configured to generate IR radiation of a selectable wavelength, the selectable wavelength being chosen so as to at least partially reduce an effect of the space charge on the electrical signal.Type: GrantFiled: December 26, 2007Date of Patent: January 26, 2010Assignee: Orbotech Medical Solutions Ltd.Inventors: Arie Shahar, Uri El-Hanany, Eliezer Traub, Peter Rusian, Zeev Gutman
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Patent number: 7582878Abstract: Some embodiments include methods, devices and systems of radiation detection by asynchronous demultiplexing. In some embodiments, an apparatus to read a plurality of electrical signals received from an electrode may include two or more electrical signal readers, wherein each of the signal readers is individually switchable between a coupled state in which an input of the signal reader is coupled to the electrode, and a decoupled state in which the input is decoupled from the electrode; and a controller to detect the plurality of electrical signals, to selectively switch the two or more signal readers to the coupled state to receive at least one sequence of two or more of the detected electrical signals, respectively, and to selectively activate the two or more signal readers to process the two or more detected electrical signals, respectively. Other embodiments are described and claimed.Type: GrantFiled: January 16, 2008Date of Patent: September 1, 2009Assignee: Orbotech Medical Solutions Ltd.Inventors: Arie Shahar, David Braginsky, Daniel Shalom, Uri El-Hanany, Zeev Gutman
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Patent number: 7528377Abstract: Apparatus for detecting radiation, including a detector which is configured to generate electrical charges responsive to incidence of a photon on the detector. The apparatus includes a plurality of detector circuits coupled to the detector at different respective locations. Each detector circuit consists of an amplifier which is configured to generate a pulse in response to the charges, and a first pulse shaper, having a first time constant, which is configured to produce a metric representative of an energy of the pulse. Each detector circuit also has a second pulse shaper, having a second time constant greater than the first time constant, which is configured to produce an indication that the metric is representative of an energy of the photon. The apparatus also includes a summing device which is coupled to sum the metric of each of the detector circuits in response to the respective indication.Type: GrantFiled: December 26, 2006Date of Patent: May 5, 2009Assignee: Orbotech Medical Solutions Ltd.Inventors: Uri El-Hanany, Arie Shahar
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Patent number: 7525098Abstract: Apparatus for detecting radiation, including a semiconductor which is arranged to interact with photons of the radiation, and a plurality of electrodes which are configured to sense respective charge distributions in response to interactions of the photons with a region of the semiconductor. The apparatus includes circuitry having respective detector circuits coupled to the electrodes to detect the interactions. The circuitry is configured to receive the respective charge distributions from two or more of the electrodes so as to generate respective energy distributions of the photons for each of the two or more electrodes, to compensate for variations in detection characteristics of the respective detector circuits so as to align the respective energy distributions with each other to form aligned distributions, to sum the aligned distributions to generate an overall energy distribution of the photons, and to output a signal indicative of the overall energy distribution.Type: GrantFiled: March 28, 2007Date of Patent: April 28, 2009Assignee: Orbotech Ltd.Inventors: Uri El-Hanany, Arie Shahar, Alex Tsigelman
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Patent number: 7479639Abstract: System and method for determining an energy window in a medical imaging system. The imaging system, designed to operate in a single photon counting mode, includes a pixilated radiation detector having an array of detector elements coupled to respective electronic channels. The method includes measuring the electronic signals produced for each detector element and producing two spectra corresponding to two different energy levels of photons, deriving an electrical offset for the signals received from each detector element and producing corrected signals and a corrected spectrum of radiation flux impinging on the detector, calculating a peak channel value measured in units of energy channels, and determining an energy window for each detector element such that the width of the window is equal to a desired fraction of the peak channel value.Type: GrantFiled: August 30, 2007Date of Patent: January 20, 2009Assignee: Orbotech Medical Solutions Ltd.Inventors: Arie Shahar, Uri El-Hanany
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Publication number: 20080277591Abstract: A method for imaging a body, including scanning the body so as to generate a tomographic image thereof, and analyzing the tomographic image to determine a location of a region of interest (ROI) within the body. The method includes providing single photon counting detector modules, each of the modules being configured to receive photons from a respective direction and to generate a signal in response thereto. The method further includes coupling each of the modules to a respective adjustable mount, adjusting each of the adjustable mounts so that the direction of the module coupled thereto is aligned with respect to the location so as to receive radiation from the ROI, operating each of the modules to receive the photons from the ROI, and, in response to the signal generated by each of the modules, generating a single photon counting image of the ROI.Type: ApplicationFiled: May 8, 2007Publication date: November 13, 2008Inventors: Arie Shahar, Uri El-Hanany, Zeev Gutman
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Publication number: 20080237482Abstract: Apparatus for detecting radiation emitted from a number of volume elements of a body. The apparatus includes a first plurality of detector elements, each detector element being configured to output signals indicative of an intensity of radiation that is incident thereon. The apparatus also includes a first plurality of adjustable collimator channels, each adjustable collimator channel being associated with and being positioned between a respective detector element and the body, each adjustable collimator channel having a second plurality of dimensional configurations defining respective different sets of the volume elements from which emitted radiation impinges on the respective detector element. A processor computes a radiation intensity from at least a portion of the volume elements in response to the signals output by the detector elements in at least two of the dimensional configurations of the adjustable collimator channels.Type: ApplicationFiled: March 28, 2007Publication date: October 2, 2008Inventors: Arie Shahar, Uri El-Hanany, Eliezer Traub, Zeev Gutman, Alexander Cherlin
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Publication number: 20080185367Abstract: Some embodiments include methods, and systems of machining using a beam of photons. In some embodiments, a machining method to remove material in a machined region may include reducing transparency of the region to at least a predefined wavelength by irradiating the region with a first beam of photons to induce generation of free electrons in the region; and machining the region with a second beam of photons having the predefined wavelength. Other embodiments are described and claimed.Type: ApplicationFiled: January 28, 2008Publication date: August 7, 2008Inventors: Uri El-Hanany, Arie Shahar, Alex Tsigelman, Zeev Gutman
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Publication number: 20080169422Abstract: Some embodiments include methods, devices and systems of radiation detection by asynchronous demultiplexing. In some embodiments, an apparatus to read a plurality of electrical signals received from an electrode may include two or more electrical signal readers, wherein each of the signal readers is individually switchable between a coupled state in which an input of the signal reader is coupled to the electrode, and a decoupled state in which the input is decoupled from the electrode; and a controller to detect the plurality of electrical signals, to selectively switch the two or more signal readers to the coupled state to receive at least one sequence of two or more of the detected electrical signals, respectively, and to selectively activate the two or more signal readers to process the two or more detected electrical signals, respectively. Other embodiments are described and claimed.Type: ApplicationFiled: January 16, 2008Publication date: July 17, 2008Inventors: Arie Shahar, David Braginsky, Daniel Shalom, Uri El-Hanany, Zeev Gutman
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Publication number: 20080164418Abstract: Method, apparatus and system for reducing or preventing polarization in semiconductor radiation detectors for medical imaging. For example, an apparatus includes a semiconductor with electrodes coupled thereto, configured to generate an electrical signal in the electrodes in response to absorption of ionizing radiation in the semiconductor, wherein the absorption of the ionizing radiation generates a space charge in the semiconductor; and an infra-red (IR) generator configured to generate IR radiation of a selectable wavelength, the selectable wavelength being chosen so as to at least partially reduce an effect of the space charge on the electrical signal.Type: ApplicationFiled: December 26, 2007Publication date: July 10, 2008Inventors: Arie Shahar, Uri El-Hanany, Eliezer Traub, Peter Rusian, Zeev Gutman
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Publication number: 20080149842Abstract: Apparatus for detecting radiation, including a detector which is configured to generate electrical charges responsive to incidence of a photon on the detector. The apparatus includes a plurality of detector circuits coupled to the detector at different respective locations. Each detector circuit consists of an amplifier which is configured to generate a pulse in response to the charges, and a first pulse shaper, having a first time constant, which is configured to produce a metric representative of an energy of the pulse. Each detector circuit also has a second pulse shaper, having a second time constant greater than the first time constant, which is configured to produce an indication that the metric is representative of an energy of the photon. The apparatus also includes a summing device which is coupled to sum the metric of each of the detector circuits in response to the respective indication.Type: ApplicationFiled: December 26, 2006Publication date: June 26, 2008Inventors: Uri El-Hanany, Arie Shahar