Patents by Inventor Andrew Maiden
Andrew Maiden 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: 10466184Abstract: Embodiments of the present invention provide a method of providing image data for constructing an image of at least a region of a target object, comprising the steps of simultaneously recording, at a detector, a plurality of separable diffraction patterns formed by a respective portion of radiation scattered by the target object; and providing the image data via an iterative process responsive to the detected intensity of radiation.Type: GrantFiled: May 3, 2013Date of Patent: November 5, 2019Assignee: PHASE FOCUS LIMITEDInventor: Andrew Maiden
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Patent number: 9401042Abstract: A method of providing image data for constructing an image of a region of a three dimensional target object, comprising providing, from a radiation source, incident radiation directed at a target object, detecting an intensity of radiation scattered by the target object, and determining image data for each of a respective plurality of slices within the target object each indicating one or more characteristics of the target object at a respective depth within the target object, wherein the image data is determined based on the detected intensity of radiation via an iterative process wherein running estimates of the image data for each of the plurality of slices are updated step by step.Type: GrantFiled: September 22, 2011Date of Patent: July 26, 2016Assignee: PHASE FOCUS LIMITEDInventors: John Marius Rodenburg, Andrew Maiden, Martin Humphry
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Patent number: 9322791Abstract: Embodiments of the present invention provide a method of estimating a magnitude of background radiation for each of a plurality of regions of a target object comprising providing an estimate of background radiation detected by a detector, measuring radiation scattered by the target object at the detector for each of a plurality of positions of the object with respect to the incident radiation, calculating, for each of the positions, an estimate of a wavefront at the detector, and determining, for each position, an estimated wavefront comprising a coherent contribution from radiation scattered by the target object and a background contribution, wherein said background contribution is at least partly incoherent with the radiation scattered by the target object. This method is particularly suitable for performing coherent diffractive imaging using ptychography where contribution from the incoherently scattered background is taken into account.Type: GrantFiled: August 29, 2013Date of Patent: April 26, 2016Assignee: PHASE FOCUS LIMITEDInventors: Martin James Humphry, Andrew Maiden
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Patent number: 9202295Abstract: Embodiments of the present invention provide a computer-based method for providing image data of a region of a target object (31), comprising the steps of estimating (706) a first intermediate object function indicating at least one characteristic of a first sub-region (501, 503) of said region of the target object, estimating (706) a second intermediate object function indicating at least one characteristic of a second sub-region (502, 504) of said region of the target object, and combining (707) the first and second intermediate object functions to form a combined object function indicating at least one characteristic of the region of the target object (31).Type: GrantFiled: September 23, 2009Date of Patent: December 1, 2015Assignee: PHASE FOCUS LIMITEDInventors: Paul Roberts, Andrew Maiden
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Publication number: 20150300964Abstract: Embodiments of the present invention provide a method of estimating a magnitude of background radiation for each of a plurality of regions of a target object comprising providing an estimate of background radiation detected by a detector, measuring radiation scattered by the target object at the detector for each of a plurality of positions of the object with respect to the incident radiation, calculating, for each of the positions, an estimate of a wavefront at the detector, and determining, for each position, an estimated wavefront comprising a coherent contribution from radiation scattered by the target object and a background contribution, wherein said background contribution is at least partly incoherent with the radiation scattered by the target object. This method is particularly suitable for performing coherent diffractive imaging using ptychography where contribution from the incoherently scattered background is taken into account.Type: ApplicationFiled: August 29, 2013Publication date: October 22, 2015Inventors: Martin James Humphry, Andrew Maiden
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Patent number: 9121764Abstract: Embodiments of the present invention provide a method of providing image data for constructing an image of a region of a target object, comprising providing incident radiation from a radiation source at a target object, detecting, by at least one detector, a portion of radiation scattered by the target object with the incident radiation or an aperture at first and second positions, and providing image data via an iterative process responsive to the detected radiation, wherein in said iterative process image data is provided corresponding to a portion of radiation scattered by the target object and not detected by the detector.Type: GrantFiled: December 2, 2011Date of Patent: September 1, 2015Assignee: PHASE FOCUS LIMITEDInventor: Andrew Maiden
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Patent number: 9087674Abstract: Embodiments of the present invention provide a method of determining at least one characteristic of a target surface, comprising providing a phase map for a first region of a target surface via radiation having a first wavelength, providing n further phase maps for the first region via radiation having a further n wavelengths each different from the first wavelength, and determining at least one characteristic at the target surface responsive to the first and further phase maps.Type: GrantFiled: April 19, 2011Date of Patent: July 21, 2015Assignee: PHASE FOCUS LIMITEDInventors: Martin Humphry, Andrew Maiden
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Patent number: 9086320Abstract: Embodiments of the present invention provide a method of providing image data for constructing an image of a region of a target object, comprising providing incident radiation from a radiation source at a target object, detecting, by at least one detector, a portion of radiation scattered by the target object with the incident radiation or an aperture at first and second positions, and providing image data via an iterative process responsive to the detected radiation, wherein in said iterative process image data is provided corresponding to a portion of radiation scattered by the target object and not detected by the detector.Type: GrantFiled: December 2, 2011Date of Patent: July 21, 2015Assignee: PHASE FOCUS LIMITEDInventor: Andrew Maiden
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Patent number: 9086570Abstract: A method and apparatus are disclosed for generating a plurality of scattered radiation patterns at an image plane of an optical microscope. The apparatus includes at least one lens element, a liquid crystal display (LCD) array, and a housing comprising a body portion supporting the LCD array and lens element in a predetermined spaced apart relationship. The LCD array comprises a plurality of pixel elements arranged in a grid layout, said array being connectable to a processing element adapted to selectively control a transmittance of each pixel in the grid layout.Type: GrantFiled: March 1, 2010Date of Patent: July 21, 2015Assignee: PHASE FOCUS LIMITEDInventor: Andrew Maiden
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Patent number: 9029745Abstract: Embodiments of the present invention provide a method of providing image data for constructing an image of a region of a target object (40) comprising providing incident radiation from a radiation source at a target object (40); detecting, by at least one detector (50), a portion of radiation scattered by the target object; and providing image data via an iterative process responsive to the detected radiation (340), wherein said iterative process comprises estimating a wave front of scattered radiation at a plane of the detector, updating a portion of the wave front based on the detected radiation, leaving a portion of the estimated wave front substantially unchanged, setting a portion of the wave front, corresponding to a portion of radiation scattered by the target object and not detected by the detector, to one or more values, and providing image data based upon the updated wave front.Type: GrantFiled: December 2, 2011Date of Patent: May 12, 2015Assignee: Phase Focus LimitedInventor: Andrew Maiden
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Publication number: 20150108352Abstract: Embodiments of the present invention provide a method of providing image data for constructing an image of at least a region of a target object, comprising the steps of simultaneously recording, at a detector, a plurality of separable diffraction patterns formed by a respective portion of radiation scattered by the target object; and providing the image data via an iterative process responsive to the detected intensity of radiation.Type: ApplicationFiled: May 3, 2013Publication date: April 23, 2015Inventor: Andrew Maiden
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Patent number: 8942449Abstract: A method of providing image data for constructing an image of a region of a target object, comprising providing a reference diffraction pattern of a reference target object; determining an initial guess for a probe function based upon the reference diffraction pattern; and determining, by an iterative process based on the initial guess for the probe function and an initial guess for an object function, image data for a target object responsive to an intensity of radiation detected by at least one detector.Type: GrantFiled: June 27, 2011Date of Patent: January 27, 2015Assignee: Phase Focus LimitedInventor: Andrew Maiden
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Patent number: 8917393Abstract: A method and apparatus are disclosed for providing image data for generating an image of a region of a target object. The method includes the steps of providing incident radiation, focusing the radiation downstream or upstream of a target object and via at least one detector located downstream of a focusing element, detecting an intensity of radiation scattered by the target object at an observation plane offset from a back focal plane associated with the focusing element.Type: GrantFiled: December 4, 2008Date of Patent: December 23, 2014Assignee: Phase Focus LimitedInventor: Andrew Maiden
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Patent number: 8908910Abstract: A method and apparatus are disclosed for providing image data. The method includes the steps of providing incident radiation from a radiation source at a target object and, via at least one detector, detecting an intensity of radiation scattered by the target object. Also via the at least one detector an intensity of radiation provided by the radiation source absent the target object is detected. Image data is provided via an iterative process responsive to the intensity of radiation detected absent the target object and the detected intensity of radiation scattered by the target object.Type: GrantFiled: December 4, 2009Date of Patent: December 9, 2014Assignee: Phase Focus LimitedInventor: Andrew Maiden
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Publication number: 20130256503Abstract: Embodiments of the present invention provide a method of providing image data for constructing an image of a region of a target object (40) comprising providing incident radiation from a radiation source at a target object (40);detecting, by at least one detector (50), a portion of radiation scattered by the target object; and providing image data via an iterative process responsive to the detected radiation (340), wherein said iterative process comprises estimating a wave front of scattered radiation at a plane of the detector, updating a portion of the wave front based on the detected radiation, leaving a portion of the estimated wave front substantially unchanged, setting a portion of the wave front, corresponding to a portion of radiation scattered by the target object and not detected by the detector, to one or more values, and providing image data based upon the updated wave front.Type: ApplicationFiled: December 2, 2011Publication date: October 3, 2013Inventor: Andrew Maiden
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Publication number: 20130223685Abstract: A method of providing image data for constructing an image of a region of a target object, comprising providing a reference diffraction pattern of a reference target object; determining an initial guess for a probe function based upon the reference diffraction pattern; and determining, by an iterative process based on the initial guess for the probe function and an initial guess for an object function, image data for a target object responsive to an intensity of radiation detected by at least one detector.Type: ApplicationFiled: June 27, 2011Publication date: August 29, 2013Applicant: PHASE FOCUS LIMITEDInventor: Andrew Maiden
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Publication number: 20130181990Abstract: A method of providing image data for constructing an image of a region of a three dimensional target object, comprising providing, from a radiation source, incident radiation directed at a target object, detecting an intensity of radiation scattered by the target object, and determining image data for each of a respective plurality of slices within the target object each indicating one or more characteristics of the target object at a respective depth within the target object, wherein the image data is determined based on the detected intensity of radiation via an iterative process wherein running estimates of the image data for each of the plurality of slices are updated step by step.Type: ApplicationFiled: September 22, 2011Publication date: July 18, 2013Applicant: PHASE FOCUS LIMITEDInventors: John Marius Rodenburg, Andrew Maiden, Martin Humphry
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Publication number: 20130033703Abstract: Embodiments of the present invention provide a method of determining at least one characteristic of a target surface, comprising providing a phase map for a first region of a target surface via radiation having a first wavelength, providing n further phase maps for the first region via radiation having a further n wavelengths each different from the first wavelength, and determining at least one characteristic at the target surface responsive to the first and further phase maps.Type: ApplicationFiled: April 19, 2011Publication date: February 7, 2013Applicant: PHASE FOCUS LIMITEDInventors: Martin Humphry, Andrew Maiden
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Publication number: 20120140986Abstract: Embodiments of the present invention provide a method of providing image data for constructing an image of a region of a target object, comprising providing incident radiation from a radiation source at a target object, detecting, by at least one detector, a portion of radiation scattered by the target object with the incident radiation or an aperture at first and second positions, and providing image data via an iterative process responsive to the detected radiation, wherein in said iterative process image data is provided corresponding to a portion of radiation scattered by the target object and not detected by the detector.Type: ApplicationFiled: December 2, 2011Publication date: June 7, 2012Applicant: PHASE FOCUS LIMITEDInventor: Andrew Maiden
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Publication number: 20120105744Abstract: A method and apparatus are disclosed for generating a plurality of scattered radiation patterns at an image an optical microscope. The apparatus includes at least one lens element, a liquid crystal display (LCD) array, and a housing comprising a body portion supporting the LCD array and lens element in a predetermined spaced apart relationship.Type: ApplicationFiled: March 1, 2010Publication date: May 3, 2012Applicant: PHASE FOCUS LIMITEDInventor: Andrew Maiden