Patents by Inventor Nathan Bluzer

Nathan Bluzer 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).

  • Patent number: 9225920
    Abstract: A focal plane staring sensor is provided that includes an M×N sensor, where M is a number of rows of sensor pixels in the sensor and N is a number of columns of sensor pixels in the sensor, where M and N are integers greater than one. A control circuit samples in each sensor pixel value for each sensor pixel of the M×N sensor at a plurality of different integration times corresponding to an amount of time that a photonic charge can be acquired in each sensor pixel of the M×N sensor, wherein the control circuit selects in each sensor pixel one sample from a set of samples to generate a scaled value to facilitate an equalization of a signal to noise ratio between the sensor pixels.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: December 29, 2015
    Assignee: Northrop Grumman Systems Corporation
    Inventor: Nathan Bluzer
  • Patent number: 9029750
    Abstract: A high sensitivity, high speed, and low noise, semiconductor non-destructive read-out (NDRO) device (700) for the conversion of a generated signal charge (110) into an output voltage having provisions for charge integration, charge transfer, and nondestructive charge read-out without kTC reset noise. The read-out device (700) includes charge sensing potential wells (520), a MOSFET having a gate (705), a source (145), and a drain (720), a feedback amplifier (305), a current generator (310), a reset gate (650), a reset drain (530), a multiplexer gate (820), and a pair of adjacent CCD transfer gates (750 and 760). CMOS detector pixels with this NDRO form a compact structure for integrating generated charge, and high sensitivity readout, without kTC reset noise. The NDRO in CCD devices provides a fast sensitive charge to voltage transducer without kTC reset noise.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: May 12, 2015
    Assignee: Northrop Grumman Systems Corporation
    Inventor: Nathan Bluzer
  • Publication number: 20140267852
    Abstract: A focal plane staring sensor is provided that includes an M×N sensor, where M is a number of rows of sensor pixels in the sensor and N is a number of columns of sensor pixels in the sensor, where M and N are integers greater than one. A control circuit samples in each sensor pixel value for each sensor pixel of the M×N sensor at a plurality of different integration times corresponding to an amount of time that a photonic charge can be acquired in each sensor pixel of the M×N sensor, wherein the control circuit selects in each sensor pixel one sample from a set of samples to generate a scaled value to facilitate an equalization of a signal to noise ratio between the sensor pixels.
    Type: Application
    Filed: May 29, 2014
    Publication date: September 18, 2014
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventor: Nathan Bluzer
  • Patent number: 8780418
    Abstract: A scanning focal plane sensor and method are described for image capturing of object space (or scenes). In one example, a focal plane sensor for a scanning imaging system is provided. The focal plane sensor for a scanning imaging system includes M×N Time Delay Integration (TDI) imaging Charge Coupled Device (CCD), where M is a number of TDI columns and N is a number of TDI stages per each column. A detector is connected to each TDI stage. The focal plane sensor includes an imaging controller configured to mechanize sampling the brightness value of each sensor pixel's initial footprint in object space and select a number of charge integrating TDI stages for substantially equalizing the inter sensor pixels' signal to noise ratios.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 15, 2014
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Nathan Bluzer, Bron R. Frias, Paul A. Tittel
  • Patent number: 8780420
    Abstract: A focal plane staring sensor is provided that includes an M×N sensor, where M is a number of rows of sensor pixels in the sensor and N is a number of columns of sensor pixels in the sensor, where M and N are integers greater than one. A control circuit samples a sensor pixel value for each sensor pixel of the M×N sensor at a plurality of different integration times corresponding to an amount of time that a photonic charge can be acquired in each sensor pixel of the M×N sensor, wherein the control circuit selects one sample from a set of samples to generate a scaled value to facilitate an equalization of a signal to noise ratio between the sensor pixels.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 15, 2014
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Nathan Bluzer, James Halvis
  • Patent number: 8477226
    Abstract: A charge coupled device imager, which can operate in time delay and integration mode, can be adapted to include variable columns having one or more blocking gates or other barriers that can be independently controlled and used to divide a used portion from an unused portion. The blocking gates may require less power to electrically insulate used from the unused sections. In this regard, an imager's charge handling capacity and dynamic range can be improved, while lowering CCD operating power requirements. Blooming drains can also be included to enhance the functionality of the imager and enable bidirectional imaging capability.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 2, 2013
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Bron R. Frias, Nathan Bluzer, Paul A. Tittel
  • Patent number: 8455829
    Abstract: Electro-thermal feedback is utilized for reducing the effective thermal conductance between the detector stage of a bolometer pixel in a thermal radiation sensor assembly and the environment through its mechanical support structure and electrical interconnects, thereby coming closer to achieving thermal conductance limited primarily through photon radiation. Minimization of the effective thermal conductance associated with the mechanical support structure and electrical interconnects is achieved by electro-thermal feedback that adjusts the temperature of an intermediate stage and the mechanical support structure and electrical interconnects, connecting it to the detector stage, to equal the temperature of the bolometer pixel's detector stage (i.e., by active thermal isolation). Increased temperature sensitivity is preferably achieved through temperature sensing with reverse biased Schottky diodes connected in series.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: June 4, 2013
    Assignee: Northrop Grumman Systems Corporation
    Inventor: Nathan Bluzer
  • Patent number: 8345134
    Abstract: An Indium Tin Oxide (ITO) gate charge coupled device (CCD) is provided. The CCD device comprises a CCD structure having a substrate layer, an oxide layer over the substrate layer, a nitride layer over the oxide layer and a plurality of parallel ITO gates extending over the nitride layer. The CCD device further comprises a plurality of substantially similarly sized channel stop regions in the substrate layer that extend transversely relative to the ITO gates, such that a given pair of channel stop regions defining a pixel column of the CCD structure. The CCD device also comprises a plurality of vent openings that extend through the nitride layer along the plurality of substantially similarly sized channel stop regions to allow for penetration of hydrogen to at least one of the oxide layer and the substrate layer.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: January 1, 2013
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Joseph T. Smith, Bron R. Frias, Paul A. Tittel, Robert R. Shiskowski, Nathan Bluzer
  • Publication number: 20110249160
    Abstract: An Indium Tin Oxide (ITO) gate charge coupled device (CCD) is provided. The CCD device comprises a CCD structure having a substrate layer, an oxide layer over the substrate layer, a nitride layer over the oxide layer and a plurality of parallel ITO gates extending over the nitride layer. The CCD device further comprises a plurality of substantially similarly sized channel stop regions in the substrate layer that extend transversely relative to the ITO gates, such that a given pair of channel stop regions defining a pixel column of the CCD structure. The CCD device also comprises a plurality of vent openings that extend through the nitride layer along the plurality of substantially similarly sized channel stop regions to allow for penetration of hydrogen to at least one of the oxide layer and the substrate layer.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 13, 2011
    Inventors: Joseph T. Smith, Bron R. Frias, Paul A. Tittel, Robert R. Shiskowski, Nathan Bluzer
  • Publication number: 20110234877
    Abstract: A charge coupled device imager, which can operate in time delay and integration mode, can be adapted to include variable columns having one or more blocking gates or other barriers that can be independently controlled and used to divide a used portion from an unused portion. The blocking gates may require less power to electrically insulate used from the unused sections. In this regard, an imager's charge handling capacity and dynamic range can be improved, while lowering CCD operating power requirements. Blooming drains can also be included to enhance the functionality of the imager and enable bidirectional imaging capability.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 29, 2011
    Applicant: Northrop Grumman Shipbuilding, Inc.
    Inventors: Bron R. Frias, Nathan Bluzer, Paul A. Tittel
  • Patent number: 7989249
    Abstract: A method of manufacturing a micro-electrical-mechanical system with thermally isolated active elements. Such a system may embody a bolometer, which is well suited for detecting electromagnetic radiation between 90 GHz and 30 THz while operating at room temperature. The method also discloses a generalized process for manufacturing circuitry incorporating active and passive micro-electrical-mechanical systems in a silicon wafer.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: August 2, 2011
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Nathan Bluzer, Silai V. Krishnaswamy, Philip C. Smith
  • Publication number: 20110180710
    Abstract: Electro-thermal feedback is utilized for reducing the effective thermal conductance between the detector stage of a bolometer pixel in a thermal radiation sensor assembly and the environment through its mechanical support structure and electrical interconnects, thereby coming closer to achieving thermal conductance limited primarily through photon radiation. Minimization of the effective thermal conductance associated with the mechanical support structure and electrical interconnects is achieved by electro-thermal feedback that adjusts the temperature of an intermediate stage and the mechanical support structure and electrical interconnects, connecting it to the detector stage, to equal the temperature of the bolometer pixel's detector stage (i.e., by active thermal isolation). Increased temperature sensitivity is preferably achieved through temperature sensing with reverse biased Schottky diodes connected in series.
    Type: Application
    Filed: January 26, 2010
    Publication date: July 28, 2011
    Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventor: Nathan BLUZER
  • Publication number: 20100197063
    Abstract: A method of manufacturing a micro-electrical-mechanical system with thermally isolated active elements. Such a system may embody a bolometer, which is well suited for detecting electromagnetic radiation between 90 GHz and 30 THz while operating at room temperature. The method also discloses a generalized process for manufacturing circuitry incorporating active and passive micro-electrical-mechanical systems in a silicon wafer.
    Type: Application
    Filed: February 4, 2009
    Publication date: August 5, 2010
    Applicant: Northrop Grumman Systems Corporation
    Inventors: Nathan BLUZER, Silai V. KRISHNASWAMY, Philip C. SMITH
  • Patent number: 7667201
    Abstract: A thermal radiation sensor is disclosed wherein a semiconductor thermocouple comprised of a pair of silicon diodes is connected in back-to-back relationship, with one of the diodes being located in a detector stage. The other diode is located in a heat bath stage together with a sensed temperature difference amplifier. The detector stage is thermally isolated from the heat bath stage by a low thermal conductivity link that includes electrical wires which connect the back-to-back diodes to the amplifier.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: February 23, 2010
    Assignee: Northrop Grumman Corporation
    Inventor: Nathan Bluzer
  • Patent number: 7439508
    Abstract: Hybrid microantennas and improved sensor structures incorporating hybrid microantenna embodiments are described herein. A hybrid long-wave infrared (LWIR) microantenna includes four inner pie-shaped arms in which the four inner pie-shaped arms are in a double bow-tie configuration and a plurality of outer pie-shaped arms in which a subset of the outer pie-shaped arms is connected to the four inner pie-shaped arms and the pie-shaped arms are sensitive to electric fields and absorb radiation.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: October 21, 2008
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Nathan Bluzer, Glenn Boreman, Brian Lail, Peter Martin Krenz
  • Publication number: 20080224045
    Abstract: Hybrid microantennas and improved sensor structures incorporating hybrid microantenna embodiments are described herein. A hybrid long-wave infrared (LWIR) microantenna includes four inner pie-shaped arms in which the four inner pie-shaped arms are in a double bow-tie configuration and a plurality of outer pie-shaped arms in which a subset of the outer pie-shaped arms is connected to the four inner pie-shaped arms and the pie-shaped arms are sensitive to electric fields and absorb radiation.
    Type: Application
    Filed: September 15, 2006
    Publication date: September 18, 2008
    Inventors: Nathan Bluzer, Glenn Boreman, Brian Lail, Peter Martin Krenz
  • Patent number: 7375333
    Abstract: A bolometer type ultra-sensitive silicon sensor pixel of a multi-pixel sensor wherein each pixel includes a detector stage, an intermediate stage, and a heat bath stage. The detector stage, the intermediate stage and a portion of the heat bath stage are generally co-planar and are interconnected by I-beam bridges so as to permit mutually co-planar rotation in response to stress and strain. Electrical coupling is improved between a micro-antenna and the detector stage by a two stage transformer assembly that couples the micro-antenna to the detector stage.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: May 20, 2008
    Assignee: Northrop Grumman Corporation
    Inventors: Nathan Bluzer, David C. Harms
  • Patent number: 7361900
    Abstract: A bolometer type focal plane is made up of a plurality of silicon sensors. Within each sensor, interconnection between co-planar stages is provided by elongated “I” beam type bridge members having a generally rectangular cross-section including unequal wider (height) and narrower (width) dimensions, and wherein the bridge members are oriented such that the narrower width dimension is in the direction of the common plane and the wider height dimension is perpendicular to the common plane. A sensor with these bridges accommodates stress/strain by rotation while preventing out-of-plane deflection and deformation.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: April 22, 2008
    Assignee: Northrop Grumman Corporation
    Inventors: Nathan Bluzer, James Halvis, Robert Shiskowski
  • Patent number: 7326977
    Abstract: An FET (field effect transistor) having source, drain and channel regions of a conductivity type in a semiconductor body of opposite conductivity type. The channel region is located at the lower extremity of the source and drain regions so as to be spaced from the surface of the semiconductor body by a distance d.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: February 5, 2008
    Assignee: Northrop Grumman Corporation
    Inventors: Nathan Bluzer, Donald R. Lampe
  • Patent number: 7253412
    Abstract: An electrical interface between a scene to be imaged and a bolometer type sensor is disclosed. Efficiency is improved by means of a thermal energy concentrator including a lens and an antenna. Where a plurality of bolometer pixels are located in an array, a microantenna is provided for each pixel in the array with a common lens being provided to focus and channel incoming radiation to each microantenna. Radiation from a scene is further coupled by means of a lens and microantenna to the absorbing element of each bolometer through an AC coupling circuit including an electronic chopper implemented by means of a PIN diode, the conductivity of which is varied so as to affect the reflection coefficient of the input signal supplied through the microantenna.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: August 7, 2007
    Assignee: Northrop Grumman Corporation
    Inventor: Nathan Bluzer