CA2910978C - Variable aperture mechanism for cryogenic environment, and method - Google Patents

Variable aperture mechanism for cryogenic environment, and method Download PDF

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Publication number
CA2910978C
CA2910978C CA2910978A CA2910978A CA2910978C CA 2910978 C CA2910978 C CA 2910978C CA 2910978 A CA2910978 A CA 2910978A CA 2910978 A CA2910978 A CA 2910978A CA 2910978 C CA2910978 C CA 2910978C
Authority
CA
Canada
Prior art keywords
motor
shutter
specified
actuator
aperture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CA2910978A
Other languages
English (en)
French (fr)
Other versions
CA2910978A1 (en
Inventor
Jeffrey P. Yanevich
Eric J. Griffin
Michael L. Brest
Kenneth L. Mcallister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raytheon Co
Original Assignee
Raytheon Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US14/088,176 external-priority patent/US9228645B2/en
Application filed by Raytheon Co filed Critical Raytheon Co
Publication of CA2910978A1 publication Critical patent/CA2910978A1/en
Application granted granted Critical
Publication of CA2910978C publication Critical patent/CA2910978C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0286—Constructional arrangements for compensating for fluctuations caused by temperature, humidity or pressure, or using cooling or temperature stabilization of parts of the device; Controlling the atmosphere inside a spectrometer, e.g. vacuum
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
    • G03B9/18—More than two members
    • G03B9/22—More than two members each moving in one direction to open and then in opposite direction to close, e.g. iris type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
    • H02P7/2913—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/72—Testing of electric windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Shutters For Cameras (AREA)
  • Radiation Pyrometers (AREA)
  • Diaphragms For Cameras (AREA)
CA2910978A 2013-06-11 2014-06-11 Variable aperture mechanism for cryogenic environment, and method Active CA2910978C (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
US201361833587P 2013-06-11 2013-06-11
US201361833592P 2013-06-11 2013-06-11
US201361833599P 2013-06-11 2013-06-11
US61/833,592 2013-06-11
US61/833,587 2013-06-11
US61/833,599 2013-06-11
US14/088,176 US9228645B2 (en) 2013-06-11 2013-11-22 Vacuum stable mechanism drive arm
US14/088,176 2013-11-22
US14/170,237 2014-01-31
US14/170,237 US8911163B1 (en) 2013-06-11 2014-01-31 Variable aperture mechanism for cryogenic environment, and method
PCT/US2014/042010 WO2014201181A1 (en) 2013-06-11 2014-06-11 Variable aperture mechanism for cryogenic environment, and method

Publications (2)

Publication Number Publication Date
CA2910978A1 CA2910978A1 (en) 2014-12-18
CA2910978C true CA2910978C (en) 2021-06-01

Family

ID=52005558

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2910978A Active CA2910978C (en) 2013-06-11 2014-06-11 Variable aperture mechanism for cryogenic environment, and method

Country Status (8)

Country Link
US (1) US8911163B1 (enExample)
EP (1) EP3008812B1 (enExample)
JP (1) JP6449262B2 (enExample)
KR (1) KR102230424B1 (enExample)
CA (1) CA2910978C (enExample)
IL (1) IL242376B (enExample)
PL (1) PL3008812T3 (enExample)
WO (1) WO2014201181A1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9285653B2 (en) * 2012-11-06 2016-03-15 Raytheon Company Variable aperture mechanism for creating different aperture sizes in cameras and other imaging devices
US9323130B2 (en) 2013-06-11 2016-04-26 Raytheon Company Thermal control in variable aperture mechanism for cryogenic environment
US9228645B2 (en) * 2013-06-11 2016-01-05 Raytheon Company Vacuum stable mechanism drive arm
US9448462B2 (en) 2013-06-11 2016-09-20 Raytheon Company Pulse width modulation control of solenoid motor
EP3070522A4 (en) * 2013-11-14 2017-05-03 Canon Kabushiki Kaisha Shutter device and imaging device comprising shutter device
JP2018017532A (ja) * 2016-07-26 2018-02-01 日本電産コパル株式会社 羽根駆動装置及び赤外線撮像装置

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082674A (en) 1958-09-11 1963-03-26 Bell & Howell Co Automatic exposure mechanism with magnetic control of iris blades
US4121235A (en) 1975-09-23 1978-10-17 Fuji Photo Film Co., Ltd. Electromagnetically operated shutter mechanism
US4592083A (en) 1984-03-27 1986-05-27 Tokyo Shibaura Denki Kabushiki Kaisha High speed x-ray shutter
JPH0227224A (ja) * 1988-07-18 1990-01-30 Toshiba Corp 極低温容器及びこれを用いた光測定器
US5128796A (en) 1989-03-31 1992-07-07 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Cryogenic shutter
US4995700A (en) 1989-03-31 1991-02-26 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Cryogenic shutter
US5689746A (en) 1993-08-13 1997-11-18 Canon Kabushiki Kaisha Amount-of-light adjusting device
US6515285B1 (en) * 1995-10-24 2003-02-04 Lockheed-Martin Ir Imaging Systems, Inc. Method and apparatus for compensating a radiation sensor for ambient temperature variations
JPH10281864A (ja) 1997-04-03 1998-10-23 Nikon Corp 熱型赤外線カメラ
US7321470B2 (en) * 2002-10-08 2008-01-22 Olympus Corporation Camera
US7427758B2 (en) 2003-05-28 2008-09-23 Opto-Knowledge Systems, Inc. Cryogenically cooled adjustable apertures for infra-red cameras
US6995359B1 (en) 2003-06-11 2006-02-07 The United States Of America As Represented By The Secretary Of The Navy Miniature cryogenic shutter assembly
JP2005257669A (ja) * 2004-02-12 2005-09-22 Toyota Central Res & Dev Lab Inc 移動部材の速度検出方法及び電磁アクチュエータ駆動装置
JP2007086302A (ja) * 2005-09-21 2007-04-05 Konica Minolta Opto Inc 可変絞りを有する画像投影装置
US7436616B2 (en) 2006-05-31 2008-10-14 Toshiba Corporation Current pulsing for unloading
KR100800480B1 (ko) 2006-08-04 2008-02-04 삼성전자주식회사 역기전력 캘리브레이션 방법과 이를 이용한 디스크드라이브의 언로딩 제어 방법 및 디스크 드라이브
JP4869855B2 (ja) * 2006-10-04 2012-02-08 セイコープレシジョン株式会社 電磁アクチュエータ及びカメラ用羽根駆動装置
GB2446606A (en) 2006-12-02 2008-08-20 Nanomotion Ltd Camera aperture diaphragm with different sized apertures
US7724412B2 (en) * 2007-06-11 2010-05-25 Drs Rsta, Inc. Variable aperture and actuator assemblies for an imaging system
JP4639260B2 (ja) 2008-08-28 2011-02-23 シャープ株式会社 カメラモジュールおよびそれを備えた電子機器
JP2010204206A (ja) 2009-02-27 2010-09-16 Sony Corp 光量調整装置、レンズ鏡筒、撮像装置、及び撮像装置の制御方法
US7949250B1 (en) 2009-11-25 2011-05-24 Apple Inc. Electro-mechanical shutter control

Also Published As

Publication number Publication date
WO2014201181A1 (en) 2014-12-18
JP6449262B2 (ja) 2019-01-09
US20140363149A1 (en) 2014-12-11
JP2016521872A (ja) 2016-07-25
KR102230424B1 (ko) 2021-03-19
EP3008812A1 (en) 2016-04-20
PL3008812T3 (pl) 2017-09-29
CA2910978A1 (en) 2014-12-18
IL242376B (en) 2019-11-28
US8911163B1 (en) 2014-12-16
KR20160018540A (ko) 2016-02-17
EP3008812B1 (en) 2017-05-10

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CA2910972C (en) Thermal control in variable aperture mechanism for cryogenic environment
KR102230423B1 (ko) 진공 안정 메커니즘 구동 암
US9448462B2 (en) Pulse width modulation control of solenoid motor
CA2915202C (en) Pulse width modulation control of solenoid motor

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