Dr. Heard S. Lowry Profile

Dr. Heard S. Lowry

Research Engineer at Aerospace Testing Alliance

SPIE Involvement:

Author

Publications (48)

Proceedings Article | 29 May 2014 Paper

Development and evaluation of technologies for testing visible and infrared imaging sensors

H. Lowry, S. Steely, W. Phillips, R. Nicholson

Proceedings Volume 9071, 90711D (2014) https://doi.org/10.1117/12.2049460

KEYWORDS: Mirrors, Sensors, Imaging systems, Calibration, Silicon carbide, Cryogenics, Projection systems, Infrared sensors, Infrared imaging, Cameras

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Proceedings Article | 25 September 2013 Paper

Further results in measuring water ice buildup on optical components in cryogenic vacuum chambers

Trevor Moeller, L. Smith, Frank Collins, Jesse Labello, James Rogers, Heard Lowry, Dustin Crider

Proceedings Volume 8841, 88410R (2013) https://doi.org/10.1117/12.2025164

KEYWORDS: Data acquisition, Mirrors, Cryogenics, Thin films, Optical components, Crystals, Reflectivity, Photodiodes, Modulation, Camera shutters

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Proceedings Article | 10 June 2013 Paper

Development of tools, technologies, and methodologies for imaging sensor testing

H. Lowry, K. Bynum, S. Steely, R. Nicholson, H. Horne

Proceedings Volume 8707, 87070B (2013) https://doi.org/10.1117/12.2012856

KEYWORDS: Mirrors, Calibration, Sensors, Digital micromirror devices, Data acquisition, Cameras, Projection systems, Long wavelength infrared, Collimators, Optical sensors

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SPIE Journal Paper | 2 November 2012

Measurement of the accumulation of water ice on optical components in cryogenic vacuum environments

Trevor Moeller, L. Montgomery Smith, Frank Collins, Jesse Labello, James Rogers, Heard Lowry, Dustin Crider

OE, Vol. 51, Issue 11, 115601, (November 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.11.115601

KEYWORDS: Crystals, Cryogenics, Reflectivity, Optical components, Water, Mirrors, Quartz, Temperature metrology, Optical testing, Interferometers

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Proceedings Article | 15 October 2012 Paper

Measurement of the accumulation of water ice on optical components in cryogenic vacuum environments

Trevor Moeller, L. Montgomery Smith, Frank Collins, Jesse Labello, James Rogers, Heard Lowry, Dustin Crider

Proceedings Volume 8492, 849207 (2012) https://doi.org/10.1117/12.929089

KEYWORDS: Crystals, Mirrors, Reflectivity, Cryogenics, Quartz, Optical components, Water, Temperature metrology, Photodiodes, Interferometers

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Proceedings Article | 11 May 2012 Paper

Scene projection technology development for imaging sensor testing at AEDC

H. Lowry, M. Fedde, D. Crider, H. Horne, K. Bynum, S. Steely, J. Labello

Proceedings Volume 8356, 83560K (2012) https://doi.org/10.1117/12.917853

KEYWORDS: Calibration, Mirrors, Sensors, Data acquisition, Projection systems, Black bodies, Infrared radiation, Optical sensors, Collimators, Optical scanning systems

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Proceedings Article | 11 May 2012 Paper

Spectral shift of infrared LEDs and resistive sources

M. Fedde, H. Lowry, J. Mansfield

Proceedings Volume 8356, 835602 (2012) https://doi.org/10.1117/12.917485

KEYWORDS: Light emitting diodes, Sensors, Absorption, Semiconductor lasers, Carbon dioxide, Infrared radiation, Diodes, Spectroscopy, Optical simulations, Electronic test equipment

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Proceedings Article | 1 May 2012 Paper

An infrared polarized scene generator for hardward-in-the-loop (HWIL) testing

Peter Erbach, Joseph Pezzaniti, David Chenault, John Reinhardt, Todd Aycock, Brian Hyatt, Heard Lowry

Proceedings Volume 8356, 835607 (2012) https://doi.org/10.1117/12.920158

KEYWORDS: Polarization, Polarimetry, Polysomnography, Polarizers, Point spread functions, Sensors, Staring arrays, Infrared radiation, Antireflective coatings, Calibration

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Proceedings Article | 29 September 2011 Paper

Space and airborne sensor testing in a cryogenic test environment at Arnold Engineering Development Center

H. Lowry, R. Nicholson, S. Steely, M. Fedde, J. Labello, K. Bynum, A. Wojcik, J. Claybrook

Proceedings Volume 8150, 815006 (2011) https://doi.org/10.1117/12.892783

KEYWORDS: Mirrors, Sensors, Cryogenics, Calibration, Projection systems, Infrared radiation, Light emitting diodes, Space sensors, Infrared sensors, Collimators

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Proceedings Article | 13 May 2011 Paper

Development of technologies for imaging sensor testing at AEDC

H. Lowry, M. Fedde, D. Crider, H. Horne, J. Gastineau, K. Bynum, S. Steely, J. Labello

Proceedings Volume 8015, 80150D (2011) https://doi.org/10.1117/12.883639

KEYWORDS: Calibration, Curium, Sensors, Mirrors, Black bodies, Monochromators, Cryogenics, Light emitting diodes, Collimators, Projection systems

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Proceedings Article | 24 April 2010 Paper

Component-level testing updates for the infrared polarized scene-generator demonstrator

Peter Erbach, J. Larry Pezzaniti, John Reinhardt, David Chenault, Dennis Goldstein, Heard Lowry

Proceedings Volume 7663, 766307 (2010) https://doi.org/10.1117/12.851910

KEYWORDS: Polarizers, Polarimetry, Polysomnography, Infrared imaging, Polarization, Infrared radiation, Calibration, Sensors, Point spread functions, Staring arrays

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Proceedings Article | 24 April 2010 Paper

Projection technologies for imaging sensor calibration, characterization, and HWIL testing at AEDC

H. Lowry, M. Breeden, D. Crider, S. Steely, R. Nicholson, J. Labello

Proceedings Volume 7663, 766303 (2010) https://doi.org/10.1117/12.848945

KEYWORDS: Calibration, Data modeling, Sensors, Data acquisition, Mirrors, Projection systems, Light emitting diodes, Systems modeling, Black bodies, Cryogenics

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Proceedings Article | 18 September 2009 Paper

Application of infrared optical projection systems in the cryogenic test environment using AEDC's 7V and 10V space sensor test chambers

H. Lowry, R. Nicholson, S. Steely, W. Simpson, J. Labello, K. Bynum, A. Wojcik

Proceedings Volume 7439, 743918 (2009) https://doi.org/10.1117/12.826208

KEYWORDS: Sensors, Mirrors, Cryogenics, Calibration, Data modeling, Infrared radiation, Projection systems, Infrared sensors, Space sensors, Polarization

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Proceedings Article | 23 April 2009 Paper

Support technologies involved in the development and implementation of radiometric systems for sensor calibration, characterization, and HWIL testing at AEDC

H. Lowry, M. Breeden, D. Crider, S. Steely, R. Nicholson, J. Labello

Proceedings Volume 7301, 730105 (2009) https://doi.org/10.1117/12.816107

KEYWORDS: Data modeling, Sensors, Calibration, Light emitting diodes, Black bodies, Optical components, Data conversion, Mirrors, Projection systems, Data acquisition

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Proceedings Article | 24 April 2008 Paper

Polarization measurements made on LFRA and OASIS emitter arrays

Jon Geske, Kevin Sparkman, Jim Oleson, Joe Laveigne, Breck Sieglinger, Steve Marlow, Heard Lowry, James Burns

Proceedings Volume 6942, 69420L (2008) https://doi.org/10.1117/12.796421

KEYWORDS: Polarizers, Cameras, Polarization, Projection systems, Infrared radiation, Resistors, Thermography, Imaging arrays, Imaging systems, Infrared imaging

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Proceedings Article | 16 April 2008 Paper

Testing and results of an infrared polarized scene generator concept demonstrator

Peter Erbach, J. Pezzaniti, David Chenault, Danny Saylor, Heard Lowry

Proceedings Volume 6942, 69420D (2008) https://doi.org/10.1117/12.778049

KEYWORDS: Polarization, Polysomnography, Polarimetry, Polarizers, Cameras, Point spread functions, Relays, Sensors, Mid-IR, Projection systems

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Proceedings Article | 16 April 2008 Paper

Technical issues in the development of scene-projection systems for sensor calibration, characterization, and HWIL testing at AEDC

H. Lowry, M. Breeden, D. Crider, S. Steely, R. Nicholson, J. Labello

Proceedings Volume 6942, 69420M (2008) https://doi.org/10.1117/12.776884

KEYWORDS: Light emitting diodes, Sensors, Calibration, Data modeling, Black bodies, Photonic crystals, Cryogenics, Fiber optics, Mirrors, Infrared radiation

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Proceedings Article | 31 March 2008 Paper

Design and performance of a polarized IR scene generator

Peter Erbach, J. Larry Pezzaniti, David Chenault, Danny Saylor, Heard Lowry

Proceedings Volume 6972, 69720Z (2008) https://doi.org/10.1117/12.783586

KEYWORDS: Polarization, Polysomnography, Polarimetry, Polarizers, Cameras, Point spread functions, Relays, Sensors, Mid-IR, Projection systems

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Proceedings Article | 16 May 2006 Paper

Radiometric calibration and mission simulation testing of sensor systems in the AEDC 7V and 10V chambers

R. Nicholson, K. Mead, H. Lowry

Proceedings Volume 6208, 62080D (2006) https://doi.org/10.1117/12.681224

KEYWORDS: Sensors, Calibration, Mirrors, Black bodies, Target acquisition, Control systems, Infrared sensors, Infrared radiation, Sensor calibration, Radiometry

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Proceedings Article | 16 May 2006 Paper

Application of scene projection technologies in the AEDC cryo-vacuum space simulation chambers

H. Lowry, D. Crider, M. Breeden, W. Goethert, W. Bertrand, S. Steely

Proceedings Volume 6208, 620808 (2006) https://doi.org/10.1117/12.661556

KEYWORDS: Optical filters, Sensors, Bandpass filters, Calibration, Mirrors, Infrared radiation, Black bodies, Optical filtering, Space sensors, Polarizers

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Proceedings Article | 25 August 2005 Paper

Optical coating considerations for cryogenic mirrors used in AEDC’s 7V and 10V space sensor test chambers

H. Lowry, W. Goethert, S. Steely, W. Simpson, D. Crider, M. Breeden

Proceedings Volume 5904, 59040R (2005) https://doi.org/10.1117/12.613377

KEYWORDS: Mirrors, Reflectivity, Optical coatings, Sensors, Aluminum, Calibration, Gold, Silver, Bidirectional reflectance transmission function, Corrosion

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Proceedings Article | 20 May 2005 Paper

Scene projection developments in the AEDC space simulation chambers

H. Lowry, D. Crider, W. Goethert, W. Bertrand, S. Steely

Proceedings Volume 5785, (2005) https://doi.org/10.1117/12.602137

KEYWORDS: Calibration, Sensors, Bandpass filters, Optical filters, Coating, Black bodies, Nonuniformity corrections, Signal attenuation, Infrared radiation, Resistors

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Proceedings Article | 12 May 2005 Paper

Uncertainty analysis of the AEDC 7V chamber

Dustin Crider, Heard Lowry, Randy Nicholson, Kimberly Mead

Proceedings Volume 5784, (2005) https://doi.org/10.1117/12.600695

KEYWORDS: Calibration, Sensors, Black bodies, Monochromators, Mirrors, Curium, Optical components, Uncertainty analysis, Data acquisition, Error analysis

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Proceedings Article | 4 August 2004 Paper

Implementation of scene simulation technologies in the AEDC space chambers

Heard Lowry, Dustin Crider, Winfried Goethert, William Bertrand

Proceedings Volume 5408, (2004) https://doi.org/10.1117/12.539845

KEYWORDS: Calibration, Black bodies, Optical filters, Sensors, Infrared radiation, Mirrors, Bandpass filters, RGB color model, Optical components, Visible radiation

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Proceedings Article | 5 September 2003 Paper

Continued development and integration of scene projection technologies in the AEDC space simulation chambers

Heard Lowry, Winfried Goethert, William Bertrand, Dustin Crider

Proceedings Volume 5075, (2003) https://doi.org/10.1117/12.486958

KEYWORDS: Sensors, Bandpass filters, Infrared radiation, Optical filters, Reflectivity, Projection systems, Mirrors, Black bodies, Calibration, Infrared imaging

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Proceedings Article | 25 November 2002 Paper

Cryogenic optical system development for AEDC's 10V chamber

Heard Lowry, William Simpson, Randy Nicholson, Frank Crosswy, James Selman

Proceedings Volume 4822, (2002) https://doi.org/10.1117/12.451803

KEYWORDS: Mirrors, Infrared radiation, Projection systems, Calibration, Sensors, Black bodies, Infrared imaging, Target acquisition, Visible radiation, Cryogenics

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The 10V Chamber Test Facility at the Arnold Engineering Development Center (AEDC) is being upgraded to provide a closed-loop capability to assess multi-band electro-optical sensor performance under realistic operational scenarios against evolving threats. This test facility will leverage existing facilities and expertise from several Government agencies including AEDC, Army/AMCOM, and USAF/KHILS to investigate performance issues during ground testing at cryogenic conditions. Radiometrically accurate simulated scenes will be presented to the test article using dual-band infrared point sources, a dual-band infrared emitter array projector, and a visible array projector. Various optical assemblies will be required to project the images from these radiometric source systems onto the sensor aperture. The infrared point sources will be positioned in the XY plane using two-stage linear translators, which must meet stringent spatial coverage and position accuracy requirements to create realistic closed-loop target motion. A large two-axis steering mirror will simulate sensor line of sight movements for the blackbody sources. A high-speed jitter mirror will simulate high frequency image motion for the emitter arrays. These mirror systems must be vibrationally isolated to minimize the jitter induced in other optical elements. Narcissus and ghost image effects will be minimized using appropriate fabrication, shielding, and calibration techniques. A multi-spectral calibration and alignment system will be integrated into the facility to ensure proper radiometric and goniometric operation of the various target sources. The target and optical systems must all meet performance specifications at cryo-vacuum conditions. Code V will be the primary tool used to evaluate wave front error and distortion coating performance for ghosting/polarization/transmission effects, optical manufacturing errors, and energy-on-detector (EOD). Finite element models of the facility will be used to analyze the structural rigidity and dynamics of the components due to the cryogenic environment.

Proceedings Article | 6 August 2002 Paper

Development and integration of scene projection technologies for the AEDC 10V upgrade and other space sensor test programs

Heard Lowry, Winfried Goethert, William Bertrand, James Selman

Proceedings Volume 4718, (2002) https://doi.org/10.1117/12.478808

KEYWORDS: Sensors, Infrared radiation, Visible radiation, Long wavelength infrared, Reflectivity, Resistors, Dielectric polarization, Space sensors, Optical filters, Projection systems

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Proceedings Article | 18 September 2001 Paper

Development of scene generation concepts for AEDC's 10-V chamber upgrade

Heard Lowry, Winfried Goethert, William Bertrand, William Brandon

Proceedings Volume 4370, (2001) https://doi.org/10.1117/12.440082

KEYWORDS: Polarization, Black bodies, Integrating spheres, Sensors, Coating, Reflection, Visible radiation, Dielectric polarization, Optical filters, Reflectivity

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Proceedings Article | 24 July 2000 Paper

Temporal measurements and scene projection testing of NAWC's fiber array projector using AEDC's laser-based Direct Write Scene Generator

Heard Lowry, Lanny Holt, Robert Dalbey, R. Tonucci

Proceedings Volume 4029, (2000) https://doi.org/10.1117/12.392534

KEYWORDS: Fiber lasers, Cameras, Thin films, Projection systems, Infrared radiation, Acousto-optics, Black bodies, Absorption, Optical filters, Sensors

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Proceedings Article | 14 July 1999 Paper

Use of AEDC's laser-based direct-write scene generator to drive NAWC's fiber array projector

Heard Lowry, Lanny Holt, Sidney Steely, Robert Dalbey, R. Tonucci

Proceedings Volume 3699, (1999) https://doi.org/10.1117/12.352952

KEYWORDS: Cameras, Fiber lasers, Sensors, Infrared radiation, Projection systems, Acousto-optics, Fiber optics, Video, Infrared cameras, Optical fabrication

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Proceedings Article | 13 July 1998 Paper

Scene generation and projection technologies: real-time methodologies and validation efforts

Sidney Steely, Randy Nicholson, E. Kiech, Kimberly Mead, Heard Lowry

Proceedings Volume 3368, (1998) https://doi.org/10.1117/12.316368

KEYWORDS: Point spread functions, Sensors, Wavefronts, Optical filters, Staring arrays, Collimators, Composites, Calibration, Error analysis, Infrared sensors

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Proceedings Article | 7 July 1998 Paper

Development of laser-based direct-write projection methods: sensor optics and system characterization issues

Heard Lowry, Celia Doub, Lanny Holt, Sidney Steely, R. Fugerer

Proceedings Volume 3375, (1998) https://doi.org/10.1117/12.327162

KEYWORDS: Staring arrays, Sensors, Collimators, Cameras, Resistors, Laser development, Infrared radiation, Data acquisition, Imaging systems, Lens design

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Proceedings Article | 15 July 1997 Paper

Optimum oversampling for laser-based and thermal-array scene projection methodologies

Sidney Steely, R. Fugerer, Heard Lowry, Ronald Dawbarn

Proceedings Volume 3084, (1997) https://doi.org/10.1117/12.280951

KEYWORDS: Sensors, Staring arrays, Point spread functions, Electro optical sensors, Optical simulations, Computer simulations, Electro optics, Convolution, Infrared sensors, Acousto-optics

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Proceedings Article | 20 June 1997 Paper

Scene projection through sensor optics using laser-based direct write methods

Heard Lowry, Celia Doub, Lanny Holt, Sidney Steely

Proceedings Volume 3062, (1997) https://doi.org/10.1117/12.276678

KEYWORDS: Sensors, Collimators, Staring arrays, Cameras, Code v, Laser optics, Reflectivity, Lens design, Acousto-optics, Integrated optics

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Proceedings Article | 17 June 1996 Paper

Initial test efforts using AEDC's focal plane array test chamber (FPATC)

Heard Lowry, D. Michael Tripp, Randy Nicholson, R. Fugerer, Sidney Steely, Lanny Holt

Proceedings Volume 2742, (1996) https://doi.org/10.1117/12.243013

KEYWORDS: Staring arrays, Interference (communication), Sensors, Lens design, Acousto-optics, Black bodies, Algorithm development, Pulsed laser operation, Cameras, Laser development

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Proceedings Article | 2 June 1995 Paper

Aspects of laser versus blackbody photodetection: laser-based photonics for focal-plane-array diagnostics

Sidney Steely, Heard Lowry, D. Michael Tripp

Proceedings Volume 2469, (1995) https://doi.org/10.1117/12.210601

KEYWORDS: Photonics, Black bodies, Staring arrays, Photodetectors, Signal to noise ratio, Sensors, Diagnostics, Acousto-optics, Infrared radiation, Optical diagnostics

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Proceedings Article | 2 June 1995 Paper

Real-time anisoplanatic convolution methods for laser-based scene generation: closed-loop focal-plane-array test and evaluation methods

Sidney Steely, Heard Lowry, R. Fugerer, Parker Elrod

Proceedings Volume 2469, (1995) https://doi.org/10.1117/12.210613

KEYWORDS: Sensors, Staring arrays, Optical simulations, Convolution, Point spread functions, Computer simulations, Optical transfer functions, Acousto-optics, Modulation, Diffraction

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Proceedings Article | 2 June 1995 Paper

Completion of the scene generation test capability (SGTC) at AEDC

Heard Lowry, Parker Elrod

Proceedings Volume 2469, (1995) https://doi.org/10.1117/12.210596

KEYWORDS: Staring arrays, Lens design, Sensors, Laser stabilization, Data acquisition, Semiconductor lasers, Acousto-optics, Optical filters, Scanners, Picosecond phenomena

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Proceedings Article | 30 May 1995 Paper

Signal processing hardware and software applied to the development of a real-time infrared mission simulation test capability

R. Fugerer, Heard Lowry, D. Hervig, Lanny Holt

Proceedings Volume 2474, (1995) https://doi.org/10.1117/12.210549

KEYWORDS: Control systems, Electronics, Staring arrays, Signal attenuation, Sensors, Frequency conversion, Computer aided design, Digital signal processing, Clocks, Signal processing

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Proceedings Article | 30 May 1995 Paper

Direct-write scene generation test facility system noise study

D. Michael Tripp, Heard Lowry, Parker Elrod

Proceedings Volume 2474, (1995) https://doi.org/10.1117/12.210548

KEYWORDS: Sensors, Staring arrays, Semiconductor lasers, Intermodulation, Laser stabilization, Optical amplifiers, Acousto-optics, Data acquisition, Optical power meters, Interference (communication)

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Proceedings Article | 15 July 1994 Paper

Equivalence of FPA response to continuous and pulsed laser radiation

Heard Lowry, D. Michael Tripp, Parker Elrod

Proceedings Volume 2225, (1994) https://doi.org/10.1117/12.179703

KEYWORDS: Staring arrays, Pulsed laser operation, Laser systems engineering

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Proceedings Article | 8 July 1994 Paper

Verification, validation, and accreditation issues related to a new IR sensor test capability

Parker Elrod, Heard Lowry, Gary Mattasits

Proceedings Volume 2224, (1994) https://doi.org/10.1117/12.180079

KEYWORDS: Sensors, Staring arrays, Infrared sensors, Hardware testing, Data modeling, Distance measurement, Calibration, Logic, Standards development, Signal processing

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Proceedings Article | 15 June 1994 Paper

Current status of direct write scene generation (DWSG) at AEDC

Heard Lowry, D. Michael Tripp, Parker Elrod

Proceedings Volume 2223, (1994) https://doi.org/10.1117/12.177925

KEYWORDS: Sensors, Staring arrays, Infrared radiation, Visible radiation

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Proceedings Article | 31 August 1993 Paper

Integrated approach to space sensor testing

Parker Elrod, Heard Lowry, James Selman

Proceedings Volume 1969, (1993) https://doi.org/10.1117/12.154723

KEYWORDS: Sensors, Electro optical modeling, Staring arrays, Space sensors, Coastal modeling, Atmospheric modeling, Infrared sensors, Radio optics, Electronics, Signal processing

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Proceedings Article | 13 August 1993 Paper

Optimization of laser scan lens systems for minimum crosstalk

Heard Lowry, Celia Doub, Rick Johnson

Proceedings Volume 1967, (1993) https://doi.org/10.1117/12.151035

KEYWORDS: Laser systems engineering, Diffraction, Gaussian beams, Staring arrays, Optical resolution, Fourier transforms, Image resolution, Sensors, Antimony, Lens design

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Proceedings Article | 13 August 1993 Paper

AEDC's Scene Generation Test Capability (SGTC) using Direct Write Scene Generation (DWSG)

Heard Lowry, Parker Elrod

Proceedings Volume 1967, (1993) https://doi.org/10.1117/12.151076

KEYWORDS: Staring arrays, Sensors, Bandpass filters, Acousto-optics, Adaptive optics, Calibration, Optical filters, Lens design, Diffraction, Picosecond phenomena

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Proceedings Article | 21 September 1992 Paper

AEDC's transportable direct-write scene generation test capability

Heard Lowry, Parker Elrod, T. Layne

Proceedings Volume 1687, (1992) https://doi.org/10.1117/12.137821

KEYWORDS: Staring arrays, Sensors, Acousto-optics, Adaptive optics, Black bodies, Computing systems, Lawrencium, Beam shaping, Laser development, Laser sources

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Proceedings Article | 1 February 1991 Paper

AEDC direct-write scene generation test capabilities

Heard Lowry, Parker Elrod, Rick Johnson

Proceedings Volume 1454, (1991) https://doi.org/10.1117/12.28044

KEYWORDS: Staring arrays, Adaptive optics, Sensors, Acousto-optics, Electronics, Televisions, Control systems, Modulation, Bragg cells, Computing systems

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