With Temperature Modifying Means Patents (Class 250/352)
  • Patent number: 10295230
    Abstract: A method of controlling FPA system stabilization includes calculating FPA adjustments as a function of FPA temperature and adjusting a TEC set point to assist the FPA adjustments in attaining a predetermined level of FPA performance. Adjusting the TEC set point can include adjusting the TEC set point as a function of at least one of ambient temperature, FPA temperature, or disparity between the predetermined level of FPA performance and a level of FPA performance obtainable by calculating the FPA adjustments as a function of FPA temperature alone without adjusting the TEC set point.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: May 21, 2019
    Assignee: Sensors Unlimited, Inc.
    Inventors: Jonathan Nazemi, Michael Delamere, Marc Hansen, Jinguo Yu
  • Patent number: 10262913
    Abstract: An electronic device and methods of manufacture thereof. One or more methods may include providing a lid wafer having a cavity and a surface surrounding the cavity and a device wafer having a detector device and a reference device. In certain examples, a solder barrier layer of titanium material may be deposited onto the surface of the lid wafer. The solder barrier layer of titanium material may further be activated to function as a getter. In various examples, the lid wafer and the device wafer may be bonded together using solder, and the solder barrier layer of titanium material may prevent the solder from contacting the surface of the lid wafer.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: April 16, 2019
    Assignee: RAYTHEON COMPANY
    Inventors: Roland W. Gooch, Buu Q. Diep, Adam M. Kennedy, Stephen H. Black, Thomas A. Kocian
  • Patent number: 10180358
    Abstract: A method for photothermal investigation of a sample (P), including: irradiating a first side of the sample (P) with an electromagnetic excitation pulse; detecting a result of the excitation pulse of one of the first side opposite second side of the sample (P) emitted thermal radiation (26); evaluating the detected thermal radiation based on a range defined by the following equations model: ?2T/?x2=1/?×?T/?t for 0<x<L, t>0 k×?T/?x?h×T=E(t)+??×(T(0,t)?T(L,t)) for x=0, t>0 k×?T/?x+h×d=???×(T(0,t)?T(L,t)) for x=L, t>0 T(x,0)=0 for t=0.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: January 15, 2019
    Assignee: Netzsch-Gerätebau GmbH
    Inventors: Martin Brunner, Marc-Antoine Thermitus
  • Patent number: 10168206
    Abstract: The detection device comprises a cold finger which performs thermal connection between a detector fitted on a cooling plate and a cooling system. The cold finger comprises at least one side wall at least partially formed by an area made from the hafnium-based amorphous metal alloy. Advantageously, the whole of the cold finger is made from the hafnium-based amorphous metal alloy.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: January 1, 2019
    Assignees: SOCIÉTÉ FRANÇAISE DE DÉTECTEURS INFRAROUGES—SOFRADIR, UNIVERSITÉ GRENOBLE ALPES
    Inventors: Pierre Cassaigne, Alexis Lenain, Sébastien Gravier
  • Patent number: 10164397
    Abstract: A laser oscillation device includes: a refrigerant container; at least one cartridge which is attached to the refrigerant container and which includes a laser gain medium and an incidence path section for guiding laser seed light to the laser gain medium; at least one nozzle for spraying a refrigerant to the laser gain medium, the at least one nozzle being disposed inside the refrigerant container, and a vacuum heat insulating container housing the refrigerant container inside and forming a vacuum insulation layer on an outer peripheral side of the refrigerant container. The cartridge is disposed so as to be insertable and removable with respect to the refrigerant container along a longitudinal direction of the laser gain medium.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: December 25, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Ryuichi Matsuda, Shingo Nishikata, Koichi Hamamoto
  • Patent number: 10054488
    Abstract: An improved system for evaluating one or more components of a vehicle is provided. The system includes a set of imaging devices configured to acquire image data based on infrared emissions of at least one vehicle component of the vehicle as it moves through a field of view of at least one of the set of imaging devices. An imaging device in the set of imaging devices can include a linear array of photoconductor infrared detectors and a thermoelectric cooler for maintaining an operating temperature of the linear array of detectors at a target operating temperature. The infrared emissions can be within at least one of: the mid-wavelength infrared (MWIR) radiation spectrum or the long wavelength infrared (LWIR) radiation spectrum.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: August 21, 2018
    Assignee: International Electronic Machines Corp.
    Inventors: Zahid F. Mian, Ronald W. Gamache, Shankar B. Baliga
  • Patent number: 9933311
    Abstract: A blackbody radiometric reference comprising a source plate or a target plate, metallic nanoparticles or other high emissivity coating disposed on the plate, and an intermediate coating such as paint. The plate may comprise copper, aluminum or composites thereof. Apparatus capable of functioning as a radiometric or thermometric reference. A pre-heater or weakly-coupled area may be disposed around or adjacent a highly thermally uniform area. A groove or perforations extending into a front surface of the source plate defining a weakly-coupled edge portion surrounding a thermally-controlled, optically-active area, and connected by bridges or structures thereto. An external probe may be located near the source plate for measuring ambient temperature, for compensating for ambient temperature or for radiative load on the blackbody.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: April 3, 2018
    Assignee: Santa Barbara Infrared, Inc
    Inventors: Joseph D LaVeigne, Stephen W McHugh
  • Patent number: 9887339
    Abstract: An infrared sensor with a microstructure has a multiplicity of sensor rods protruding from a sensor base and arranged axially parallel to one another. Each of the sensor rods is designed as a thermocouple, in that a first rod end, arranged on the sensor base, is electrically connected to an opposite free second rod end by both a first and a second electrically conductive rod element. The two rod elements have a different Seebeck coefficient, and the first rod element is formed as a hollow profile and the second rod element is arranged in the first rod element such that each thermocouple is formed as a single rod with a small standing area on the sensor base.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: February 6, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Harry Hedler, Ingo Kuehne, Markus Schieber, Joerg Zapf
  • Patent number: 9863805
    Abstract: An infrared detector system is provided for detecting infrared radiation from an infrared radiation source or a scene. The system includes a first area that is semiconductor-based and biased to produce negative luminescence, the first area including at least one semiconductor-based detector. The detector system further includes at least one additional area being semiconductor-based and biased to produce negative luminescence. A low-emissivity specular retro-reflector shield is configured to reflect infrared radiation and covers the first area and the at least one additional area. The shield defines an aperture to allow the at least one semiconductor-based detector to receive incident rays of the infrared radiation from the infrared radiation source or the scene via a low-scatter, low-emission optical system such that the radiation incident from the infrared radiation source or scene substantially fills the solid angle defined by the aperture at any point in the first area.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: January 9, 2018
    Assignee: TELEDYNE SCIENTIFIC & IMAGING, LLC
    Inventors: William E. Tennant, Robert F. Buzerak, David J. Gulbransen
  • Patent number: 9766130
    Abstract: A IDCA system combining thermo-electric cooler (TEC) and an internal nBn photo-detector having a photo absorbing layer comprising an n-doped semiconductor exhibiting a valence band energy level; and a contact layer comprising a doped semiconductor. A barrier layer is disposed between the photo absorbing layer and the contact layer, the barrier layer exhibiting a valence band energy level substantially equal to the valence band energy level of the doped semiconductor of the photo absorbing layer; the barrier layer exhibiting a thickness and a conductance band gap sufficient to prevent tunneling of majority carriers from the photo absorbing layer to the contact area and block the flow of thermalized majority carriers from the photo absorbing layer to the contact area. Alternatively, a p-doped semiconductor is utilized, and conductance band energy levels of the barrier and photo absorbing layers are equalized.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: September 19, 2017
    Inventor: Shimon Maimon
  • Patent number: 9442020
    Abstract: A method for detecting infrared radiation includes the steps of: providing a resistive bolometer retina including a plurality of resistive bolometers suspended above a substrate of a bolometric detector; acquiring the infrared radiation by the resistive bolometer retina to produce a plurality of raw read signals provided by the bolometers; correcting a response dispersion of the resistive bolometers in the raw read signals using a gain table, each gain of the gain table being associated with a bolometer of the resistive bolometer retina.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: September 13, 2016
    Assignee: ULIS
    Inventors: Alain Durand, Michel Vilain, Christophe Minassian
  • Patent number: 9338342
    Abstract: An object of the present invention is to provide an infrared lens unit having a high optical quality and an infrared camera system provided with the infrared lens unit. An infrared lens unit according to the present invention to achieve the object is the infrared lens unit to be attached to an infrared camera-module characterized in comprising a data memory for storing lens data and an image focusing condition is controlled according to the data stored in the data memory and temperature data in the infrared lens unit.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: May 10, 2016
    Assignee: Tamron Co., Ltd.
    Inventor: Yukiko Shibata
  • Patent number: 9323034
    Abstract: Optical imaging systems and methods providing having variable lateral zoom. In one example, an optical imaging system with variable lateral zoom includes primary optics configured to receive and direct incident electromagnetic radiation from a viewed scene onto a focal plane to form a substantially planar intermediate image at the focal plane, the intermediate image having substantially uniform lateral magnification, an eyepiece optically coupled to the primary optics and configured to reimage the intermediate image onto an image plane to produce an output image having variable lateral magnification, and a photo-sensitive detector positioned at the image plane.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: April 26, 2016
    Assignee: RAYTHEON COMPANY
    Inventor: Benjamin P. Dolgin
  • Patent number: 9307145
    Abstract: A video camera includes a first temperature sensor, a control logic circuit, a main system, a heating module, a fan and a power supply. After the power supply supplies power to the video camera, the first temperature sensor comes to be active, when the temperature sensed by the first temperature sensor is less than T1, the first temperature sensor outputs a control signal to the control logic circuit, which activates the heating module and the fan and prevents the power supply from supplying to the main system; and when the temperature sensed by the first temperature sensor is greater than T1, the first temperature sensor outputs a control signal to the control logic circuit which enables the power supply to supply to the main system and inactivates the heating module and the fan, and therefore, a normal activation and stable operation of the video camera at low temperatures are ensured.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: April 5, 2016
    Assignee: Zhejiang Uniview Technologies Co., Ltd
    Inventors: Hua Sheng, YiFei Sun
  • Patent number: 9304227
    Abstract: Optical detection apparatus (300) comprising an optical detector (302, 304, 306), a detector amplifier (336, 338, 340), and switching means, e.g., a multiplexer (344, 348), for dynamically selecting at least one of the optical detector or the detector amplifier by switching from among at least two alternative optical detectors and/or at least two detector amplifiers such as to minimize noise equivalent power (NEP) of a selected detector or combination of detector and amplifier under given operating conditions.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: April 5, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Raj Pai, Marian Morys, Homi Phiroze Cooper, John Thomas
  • Patent number: 9296496
    Abstract: According to one embodiment, an apparatus includes an optical sensor having one or more thermally sensitive components. The sensor is gimbal mounted on a space or air-borne vehicle and includes a heat sink component thermally coupled to the one or more thermally sensitive components via at least one heat strap and configured to at least passively receive and store thermal energy from the one or more thermally sensitive components without use of a motorized thermal energy transfer device. The apparatus also includes a radiator configured to receive thermal energy from the heat sink component and to dissipate thermal energy to an ambient environment. The radiator is disposed on a first side of an optical path of the sensor opposite a second side of the optical path on which the heat sink component is disposed. The heat sink component is configured to at least partially balance a center-of-gravity of the sensor.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: March 29, 2016
    Assignee: Raytheon Company
    Inventors: Andrew L. Bullard, David M. La Komski
  • Patent number: 9207434
    Abstract: An optical lens system for focusing light on a focal plane for detection by a detector device. The optical lens system comprises a series of optical materials including first and last optical materials with a plurality of other optical materials located therebetween. A housing accommodates the series of optical materials, and each of the optical materials is spaced a desired distance from one another. An external entrance pupil supplies infrared light to the series of optical materials of the optical lens system, and the entrance pupil is located in front of the first optical material. A Dewar window and a filter are located between the last optical material and the focal plane. The optical materials are selected and arranged to focus simultaneously both mid-wave infrared light and long-wave infrared light on the focal plane over a wide temperature range.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: December 8, 2015
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Philip R. Staver
  • Patent number: 9194750
    Abstract: An infrared (IR) imaging system is presented. The system includes a cooling chamber associated with a cooler generating a certain temperature condition inside the chamber. The cooling chamber has an optical window, and includes thereinside an IR detection unit including one or more detectors thermally coupled to the cooler and at least two cold shields thermally coupled to the cooler and carrying at least two imaging optical assemblies. The at least two imaging optical assemblies are enclosed by the cold shields in between the detection unit and the optical window and thereby define at least two different optical channels for imaging light from the optical window onto the one or more detectors of the detection unit.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: November 24, 2015
    Assignee: SEMI CONDUCTOR DEVICES—ELBIT SYSTEMS—RAFAEL PARTNERSHIP
    Inventors: Dov Oster, Michael Singer, Alina Koifman, Tuvy Markovitz
  • Patent number: 9190115
    Abstract: A method of assembling a disk drive according to the invention comprises steps of: providing a base component of a housing of the disk drive; providing a cover component of the housing; mating the base component and the cover component to form an enclosed housing that encloses disk drive components for operation of the disk drive; and sealing the disk drive using low thermal energy bonding. A hermetically sealed disk drive of the invention comprises: a housing comprising a base and a cover; and disk drive components enclosed within the housing for operation of the disk drive, wherein the housing comprises a bondline continuously extending around a periphery of the housing for sealing the same.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: November 17, 2015
    Assignee: entrotech, inc.
    Inventors: James E. McGuire, Jr., Andrew C. Strange
  • Patent number: 9063083
    Abstract: An ATR sensor has a housing and sensor components in the housing including an electromagnetic radiation source for emitting a predefined wavelength range, a reflection body permeable for radiation and contactable with a fluid to be evaluated, and a detector for the reflected radiation as well as other members for conducting the measurement and for operation. The sensor is particularly suited for measuring a CO2 content of a fluid. Before sealing the housing in a gas-tight manner, in particular for avoiding a measurement value drift and for keeping the radiation paths free of CO2, a CO2 getter material is introduced into the housing and/or into a receiving space of an additional housing that communicates with the interior space of the housing before sealing the interior space and/or the receiving space.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: June 23, 2015
    Assignee: Anton Paar GmbH
    Inventors: Michael Imre, Johann Loder, Gerhard Pfeifer
  • Patent number: 8969811
    Abstract: A device to detect thermal radiation has a membrane and at least two detector elements that are respectively set up to transduce thermal radiation into an electrical signal and are mounted situated next to one another on the membrane, wherein at least one heat dissipation path is provided on the side of the membrane facing towards the detector elements and/or on the side of the membrane facing away from the detector elements, which heat dissipation path has a higher heat conductivity than the membrane and is connected with the detector elements in a heat-conductive manner via the membrane so that heat can be discharged from the detector elements with the heat dissipation path, whereby the response time of the detector elements is short; and wherein at least one heat barrier that has a lower heat conductivity than the membrane and extends between the detector elements is provided integrated into the membrane, such that a heat conduction in the membrane from the one detector element to the other detector elemen
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: March 3, 2015
    Assignee: Pyreos Ltd.
    Inventors: Carsten Giebeler, Matthias Schreiter, Uwe Rettig
  • Patent number: 8941067
    Abstract: A method for cooling an imaging device includes providing, by a cold finger, a cold sink to the imaging device and conducting heat from a cold shield, a sensor chip assembly and a leadless chip carrier towards the cold finger through a plurality of parallel paths. The imaging device includes a dewar assembly having a cold shield, a sensor chip assembly disposed on a leadless chip carrier (LCC) and configured to capture an infrared image, a cold finger configured to cool the dewar assembly; and a thermal adapter. The thermal adapter is configured to draw heat from the cold shield and sensor chip assembly through a plurality of parallel paths towards the cold finger.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: January 27, 2015
    Assignee: Raytheon Company
    Inventor: Shawn Erving
  • Patent number: 8941068
    Abstract: Infrared imagery device with integrated shield against parasite infrared radiation, and method of manufacturing the device. This device comprises a support provided with an infrared radiation detector, at least one optical device facing the detector, and a shield against parasite radiation. The shield comprises at least two continuous beads, spaced from each other, extending from the support as far as the optical device, provided with vents and made of a material that significantly attenuates parasite radiation, penetrating laterally between the support and the optical device. The two beads with their vents 15 form a baffle. The device is manufactured using the flip chip technique.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: January 27, 2015
    Assignees: Commissariat àl'Énergie Atomique et aux Énergies Alternatives, Office National d'Etudes et de Recherches Aérospatiales
    Inventors: Manuel Fendler, Guillaume Druart
  • Publication number: 20140319355
    Abstract: An ultra-high temperature optical method incorporates speckle optics for sensing displacement and strain measurements well above conventional measurement techniques. High temperature pattern materials are used which can endure experimental high temperature environments while simultaneously having a minimum optical aberration. A purge medium is used to reduce or eliminate optical distortions and to reduce, and/or eliminate oxidation of the target specimen.
    Type: Application
    Filed: March 17, 2014
    Publication date: October 30, 2014
    Inventors: Russell W. Smith, H. Kevin Rivers, Joseph G. Sikora, Mark C. Roth, William M. Johnston
  • Publication number: 20140217289
    Abstract: An infrared detector may include a substrate, a resonant unit spaced apart from the substrate, the resonant unit configured to generate heat by inducing resonance at a plurality of wavelengths of incident infrared light, a thermistor layer configured to support the resonant unit and be spaced apart from the resonant unit, the thermistor layer having a resistance value that varies according to the heat generated in the resonant unit, and a connection unit configured to support the thermistor layer such that the thermistor layer is spaced apart from the substrate and electrically connect the thermistor layer to the substrate.
    Type: Application
    Filed: January 3, 2014
    Publication date: August 7, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-hyun NAM, Hae-seok PARK
  • Publication number: 20140175284
    Abstract: An infrared detector capable of detecting an infrared spectrum having a wide bandwidth using a broadband light absorber. The infrared detector including a substrate, a light absorber disposed apart from the substrate at a distance, and a pair of thermal legs configured to support the light absorber such that the light absorber is spaced apart from the substrate by the distance. The light absorber includes at least one thermistor layer having a resistance value that varies according to temperature and at least two resonator layers disposed on at least one of upper and lower surfaces of the at least one thermistor layer.
    Type: Application
    Filed: December 13, 2013
    Publication date: June 26, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sook-young ROH, Sung-hyun NAM, Hae-seok PARK, Seok-ho YUN, Hyun-gue HONG
  • Patent number: 8749636
    Abstract: A multi-band aperture filter for optically coupling to a focal plane array (FPA) of a camera includes a substrate, and a first spectral coating on a first surface of the substrate that passes both a first longer and a second shorter wavelength band. A second spectral coating that passes the longer wavelength band and blocks the shorter wavelength band is on an outer annulus region, but not on an inner region on the first surface or a second surface of the substrate. The second spectral coating provides a larger aperture area for the longer wavelength band as compared to an aperture area for the shorter wavelength band to passively realize different F-numbers for the bands to provide substantially matched beam spot sizes on the detector array for the longer wavelength band and the shorter wavelength band, such as a long-wave infrared (LWIR) band and a mid-wave IR (MWIR) band.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: June 10, 2014
    Assignee: Lockheed Martin Corporation
    Inventor: Kevin L. Brown
  • Patent number: 8740168
    Abstract: A focal plane assembly facilitates a molybdenum base plate being mounted to another plate made from aluminum. The molybdenum pin is an interference fit (press fit) in the aluminum base plate. An annular cut out area in the base plate forms two annular flexures.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: June 3, 2014
    Assignee: Lawrence Livermore National Security, LLC.
    Inventors: William E. Hunt, Jr., Michael P. Chrisp
  • Publication number: 20140117238
    Abstract: Disclosed herein are methods and mid-IR detection apparatus to measure analytes in gas or liquid phase. Solid state cooling of a crystalline lattice is effectively achieved with the controlled flow of charge carriers that absorb thermal energy from the semiconductor material which senses mid-IR photons. Reduction in temperature improves signal-to-noise ratios thus improving molecular sensitivity. In one embodiment the apparatus is used to detect a biomarker.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 1, 2014
    Applicant: The Board of Regents of the University of Oklahoma
    Inventor: Patrick J. McCann
  • Publication number: 20140111651
    Abstract: The imaging system for imaging field rays comprises a detection surface, a device for focusing the field rays with said detection surface, and a diaphragm. Said device comprises a Fresnel lens comprising a first dioptre, the non-plane surface of which, called the active zone, makes it possible to focus the field rays towards said detection surface, and said diaphragm allows controlled distribution of the field rays over said active zone.
    Type: Application
    Filed: April 16, 2012
    Publication date: April 24, 2014
    Applicants: ULIS, OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES (ONERA)
    Inventors: Guillaume Druart, Florence De La Barriere, Arnaud Crastes
  • Patent number: 8687110
    Abstract: In one embodiment, a camera is provided that includes: an image sensor configured to provide an image signal; an automatic gain control (AGC) unit configured to determine an AGC control signal for controlling a gain applied to the image signal; a cooler configured to cool the image sensor; and a thermal control circuit configured to compare the AGC control signal to a threshold, wherein the thermal control circuit is further configured to turn on the cooler if the comparison indicates that the AGC control signal exceeds the threshold.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: April 1, 2014
    Assignee: FLIR Systems, Inc.
    Inventor: David W. Gardner
  • Patent number: 8674308
    Abstract: A dewar assembly is presented for use in an optical IR detection system defining a light collecting region. The dewar assembly comprises a warm shield unit configured as an enclosure for optically enclosing the light collection region and having an optical window through which incident light enters the dewar. The warm shield defines a reflective inner surface configured such that light portions of the incident light propagating through said optical window onto said inner surface are reflected by the inner surface towards regions outside said light collecting region.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: March 18, 2014
    Assignee: Semi Conductor Devices-Elbit Systems-Rafael Partnership
    Inventor: Michael Singer
  • Patent number: 8674307
    Abstract: A device for detecting infrared radiation comprising an array of bolometers for detecting radiation; and in order to read each bolometer, a signal shaping circuitry comprising: a circuitry capable of biasing the bolometer at a predetermined voltage in order to make current flow therethrough; a circuitry capable of generating a common-mode current; and a circuitry capable of integrating the difference between the current that flows through the bolometer and the common-mode current. According to the invention, the device comprises a circuitry capable of injecting current into each bolometer in order to shift its resistance by a predetermined quantity that depends on its offset, current injection being performed prior to readout biasing of the bolometer and the shift being performed according to the direction in which the bolometer's resistance varies as a function of temperature. In addition, correction circuitry is capable of shifting the resistances of bolometers towards a common value.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: March 18, 2014
    Assignee: Ulis
    Inventors: Benoît Dupont, Michel Vilain
  • Patent number: 8664606
    Abstract: An infrared radiation detector includes: a cryostat having a cold finger ensuring heat exchange with a cold source and a window transparent to infrared radiation to be detected; a mechanically fixed cold plane in heat exchange with the cold finger; a detector unit comprising at least a detector circuit sensitive to the infrared wavelength range to be detected, and in direct or indirect heat exchange with the cold plane; and a mechanically fixed cold shield in heat exchange with the cold plane and limiting stray radiation. The cold shield is rotationally symmetrical. An inside wall of the cold shield has a succession of reliefs distributed in at least one helical pattern. A definition axis of the helical pattern coincides with the axis of revolution of the cold shield.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 4, 2014
    Assignee: Societe Francaise de Detecteurs Infrarouges—Sofradir
    Inventor: Bertrand Orlach
  • Patent number: 8648308
    Abstract: An Infra Red (IR) camera and method of operating the same is disclosed. The camera includes a detector having an infrared focal plane array (IRFPA). The camera is operated in such a fashion, implemented in software, to maximize the detector operating temperature under varying scene temperature and atmospheric conditions in order to achieve a predetermined and adequate level of sensitivity and operability from the detector.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: February 11, 2014
    Assignee: Selex ES Ltd.
    Inventors: Peter Knowles, Jeremy Crouch
  • Patent number: 8637824
    Abstract: In certain embodiments, a system may include a sensor platform, a cold shield, and a support system. The sensor platform supports a sensor system. The cold shield allows first radiation to reach the sensor system and prevents second radiation from reaching the sensor system. The support system is coupled to the cold shield and the platform, and supports the cold shield and maintains a separation between the cold shield and the platform.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: January 28, 2014
    Assignee: Raytheon Company
    Inventors: Richard N. Mullins, Paul A. Drake, Mark T. Luke
  • Publication number: 20130327944
    Abstract: A heater (15) for a sensor (10) comprises a substrate (20), an electrically conductive heating structure (21) on the substrate (20), and one or more connecting portions (28) for electrically connecting the heating structure (21) to one or more outside terminals (14) of the sensor (10). The substrate (20) is rigid and can comprise ceramics, preferably alumina ceramics.
    Type: Application
    Filed: January 20, 2012
    Publication date: December 12, 2013
    Applicant: Excelitas Technologies Singapore PTE, Ltd.
    Inventors: Henrik Ernst, Arthur Barlow, Fred Plotz
  • Patent number: 8497479
    Abstract: A thermal infrared camera may be used under a wide variety of target-scene radiation conditions, with interchangeable or zoom lenses requiring matching or different size cold stops. A variable aperture assembly of a thermal infrared camera integrates a rigid open truss-like framework that's capped by an aperture ring and bottomed by a driving ring, and a radiation shield, located inside the framework, that contains an aperture ring at an upper side. A plurality of blades that collectively define an aperture positioned between the upper aperture rings. Opposite blade ends are coupled to respective ones of the two aperture rings, permitting pivotal movement in one ring and radial movement in the other ring, when the rings are rotated relative to one another, to change the size of the formed aperture. Both refractive and reflective infrared telescopes may be retro-fitted with variable aperture devices to enhance infrared imaging performance.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: July 30, 2013
    Assignee: Opto-Knowledge Systems, Inc.
    Inventors: John Garman, Nahum Gat
  • Patent number: 8476591
    Abstract: A radiation sensor device including an integrated circuit chip including a radiation sensor on a surface of the integrated chip, one or more electrical connections configured to connect between an active surface of the integrated circuit chip and a lead frame, a cap attached to said integrated circuit chip spaced from and covering said radiation sensor, the cap having a transparent portion defining a primary lens transparent to the radiation to be sensed, a secondary lens disposed in a recess proximate and spaced from said primary lens transparent to the radiation to be sensed, and an air gap between said primary lens and said secondary lens.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: July 2, 2013
    Assignee: Analog Devices, Inc.
    Inventors: Oliver Kierse, Eamon Hynes
  • Patent number: 8471209
    Abstract: A method for maintenance of an array of bolometer-type detectors comprises heating of certain detectors to a threshold temperature. The heating is performed by supplying resistive detection elements with electric currents, and the threshold temperature is determined for each detector as a function of a measurement made previously on said detector. Such method makes it possible to eliminate persistent images caused by radiation overexposure, or by damage to the thermoelectric properties of certain pixels appearing during the manufacture or ageing thereof. The method does not require the use of an oven or Peltier element, thus avoiding the risk for such heating component to damage irreversibly the reading and CMOS addressing circuits on which the detectors are hybridised or deposited.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: June 25, 2013
    Assignee: Sagem Defense Securite
    Inventors: Hubert Gardette, Cyrille Becker, Francois-Boris Mijolla
  • Patent number: 8471206
    Abstract: Systems and methods are directed to determining the vacuum integrity within a vacuum package assembly containing an infrared detector, such as within an infrared imaging device. For example for an embodiment, a method of performing a vacuum pressure test on a vacuum package includes changing a first parameter value associated with an infrared detector within the vacuum package to vary a temperature of the infrared detector; measuring a second parameter value associated with the infrared detector based on the changing of the first parameter value; comparing the second parameter value to a threshold value; and determining a vacuum pressure condition of the vacuum package based on the comparing of the second parameter value to the threshold value.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: June 25, 2013
    Assignee: Flir Systems, Inc.
    Inventors: Joseph Kostrzewa, Russell D. Granneman
  • Patent number: 8431901
    Abstract: The invention relates to a method for controlling the resistance of a bolometer in a bolometer matrix of a sensor, said sensor comprising a circuit for reading said matrix which is capable of addressing said bolometer. According to the invention, the method comprises a step (46) of adjusting the recurrence of addressing the bolometer using the read circuit.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: April 30, 2013
    Assignee: ULIS
    Inventor: Arnaud Crastes
  • Patent number: 8426820
    Abstract: An image sensor system includes a detector having a plurality of detector elements and optics having a beam path from an optical element on to the detector. Calibration of the detector can be rapidly effected where the image sensor system has a reference radiating device fixed within the beam path for illuminating the detector elements.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: April 23, 2013
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventors: Joachim Barenz, Frank Zehetmair, Hans Dieter Tholl
  • Patent number: 8404197
    Abstract: A cup assembly for holding a sample to be analyzed spectrochemically, includes a tubular longitudinal member which is disposed symmetrical about a central axis. The tubular member extends longitudinally between a first end and a second end. An indented peripheral flange is defined at the second end. The indented flange has an inverted L shaped cross-section. An annular collar extends longitudinally between a first end and a second end. An internal peripheral flange is defined at the first end. The internal flange has an inverted L shaped cross-section complementing the indented flange of the tubular member. When a substantially thin film is interposed between the second end of the tubular member and the first end of the annular collar, the film is retained between the sample cell body and the collar between the indented flange and the internal flange. The cup may have a funnel shaped sample retaining chamber.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: March 26, 2013
    Inventor: Monte J. Solazzi
  • Publication number: 20130068951
    Abstract: A device for the radiometric calibration of infra-red measuring devices is provided. The device is in the form of a heated metal surface that is used as a radiant surface and is coated with a high-emission material. The device includes a spherical segment, the interior of which is coated with the high-emission material and the opening of the spherical segment is used as an aperture for an infra-red device that can be arranged in the center of the aperture.
    Type: Application
    Filed: May 25, 2011
    Publication date: March 21, 2013
    Applicant: EADS Deutschland GmbH
    Inventor: Jochen Barth
  • Patent number: 8304734
    Abstract: An infrared sensor capable of more highly accurately correcting an electrical signal converted by a light receiving unit is provided. An infrared sensor (100) converts energy of infrared rays radiated from an object (for example, human body) to an electrical signal and outputs the electrical signal, the infrared sensor comprising: a light receiving unit (10) that includes a quantum type infrared detection element (11) and that converts the energy of the infrared rays to an electrical signal; and a correction unit (20) that corrects the output signal from the light receiving unit (10), wherein the light receiving unit (10) and the correction unit (20) are formed of the identical material on the identical substrate (1) and have the identical configuration so that the infrared rays enters in an identical manner.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: November 6, 2012
    Assignee: Asahi Kasei EMD Corporation
    Inventors: Kazutoshi Ishibashi, Masayuki Sato, Edson Gomes Camargo, Yoshinori Yanagita, Hidetoshi Endo
  • Publication number: 20120235044
    Abstract: An infrared sensor module includes: an infrared sensor device disposed on a substrate and configured to receive infrared signals; a signal processing circuit device configured to process an output from the infrared sensor device; a metal case which is provided at a predetermined distance from the infrared sensor device, which includes a light incident window provided with an optical system for coupling an image on the infrared sensor device from external infrared signals, and which accommodates the infrared sensor device and the signal processing circuit device; and a sensor cover which is disposed between the infrared sensor device and the case and the signal processing circuit device, and which includes a light-transmitting portion configured to guide the infrared signals entering via the optical system to the infrared sensor device.
    Type: Application
    Filed: December 17, 2010
    Publication date: September 20, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Mitsuhiko Ueda, Takami Okubayashi, Takanori Sugiyama, Yoshiharu Sanagawa, Takanori Aketa, Yushi Nakamura, Masao Kirihara
  • Publication number: 20120235041
    Abstract: Implementations of the present disclosure involve an apparatus and method to measure the long-wave irradiance of the atmosphere or long-wave source. The apparatus may involve a thermopile, a concentrator and temperature controller. The incoming long-wave irradiance may be reflected from the concentrator to a thermopile receiver located at the bottom of the concentrator to receive the reflected long-wave irradiance. In addition, the thermopile may be thermally connected to a temperature controller to control the device temperature. Through use of the apparatus, the long-wave irradiance of the atmosphere may be calculated from several measurements provided by the apparatus. In addition, the apparatus may provide an international standard of pyrgeometers' calibration that is traceable back to the International System of Units (SI) rather than to a blackbody atmospheric simulator.
    Type: Application
    Filed: March 16, 2011
    Publication date: September 20, 2012
    Applicant: ALLIANCE FOR SUSTAINABLE ENERGY, LLC
    Inventor: Ibrahim Reda
  • Patent number: 8242451
    Abstract: An aperture arrangement is disclosed, such as an aperture arrangement suitable for use with a dual wavelength infrared detector. A detector is disclosed which includes a casing; an aperture defined in one end of the casing; and a filter having an inner region and an outer region substantially (e.g., greater than 50%) covering the aperture; wherein the outer region of the filter transmits radiation within a first range of wavelengths and reflects radiation within a second range of wavelengths.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: August 14, 2012
    Assignee: Selex Galileo Ltd.
    Inventor: Stuart Duncan
  • Publication number: 20120199745
    Abstract: A near infrared (NIR) semiconductor laser system is shown for gas sensing. An embodiment is centered on the use of a system with a much wider tunable laser, which today has a scan band of more than 150 nanometers (nm) to as much as 250 nm or more. In some cases the scan band is about 400 nm or more. This is achieved in the current embodiment through the use of a widely tunable microelectromechanical system (MEMS) based Fabry-Perot filter as an integral part of the laser cavity. Using this technology, these systems are capable of capturing a variety of gases in the any of the well-known spectroscopic scan bands, such as the OH, NH or CH. For example, a single laser with a 250 nm scan band window between 1550-1800 nm can capture ten or as many as twenty hydrocarbon-based gases simultaneously.
    Type: Application
    Filed: March 15, 2012
    Publication date: August 9, 2012
    Applicant: AXSUN TECHNOLOGIES, INC.
    Inventors: Dale C. Flanders, Petros Kotidis