Prof. Philip J. Bos Profile

Prof. Philip J. Bos

Professor at Kent State Univ

SPIE Involvement:

Author | Instructor | Student Chapter Advisor

Publications (56)

Proceedings Article | 13 March 2024 Presentation + Paper

A tunable transmissive Pancharatnam phase device with high optical beam steering efficiency

Philip Bos, Brandon Vreeland, Andre Van Rynbach

Proceedings Volume 12907, 1290709 (2024) https://doi.org/10.1117/12.3014327

KEYWORDS: Liquid crystals, Electrodes, Beam steering, Electric fields, Molecules, Crystal optics, Switching, Polarized light, Optical alignment, Near infrared

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Proceedings Article | 29 September 2023 Presentation + Paper

Intuitive understanding of the connection between Pancharatnam–Berry optical beam deflectors and polarization volume holograms

Fenglin Xi, Philip Bos, Hsienhui Cheng, Xiayu Feng, Lu Lu

Proceedings Volume 12658, 1265804 (2023) https://doi.org/10.1117/12.2680790

KEYWORDS: Polarization, Diffraction, Dielectrics, Birefringence, Finite-difference time-domain method, Electric fields, Complex amplitude, Diffraction gratings, Beam propagation method, Optical gratings

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SPIE Journal Paper | 4 August 2023 Open Access

Haze reduction in concentric electrode-based large aperture liquid crystal lens with segmented phase profile

Amit K. Bhowmick, Afsoon Jamali, Douglas Bryant, Sandro Pintz, Philip J. Bos

OE, Vol. 62, Issue 08, 085101, (August 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.8.085101

KEYWORDS: Electrodes, Spiral phase plates, Air contamination, Lenses, Diffraction, Liquid crystals, Design and modelling, Distortion, Optical engineering, Liquids

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SPIE Journal Paper | 12 July 2023 Open Access

Design, fabrication, and characterization of a liquid crystal-based large area electrically tunable lens for correction of astigmatism and defocus

Amit K. Bhowmick, Afsoon Jamali, Douglas Bryant, Sandro Pintz, Philip J. Bos

OE, Vol. 62, Issue 07, 075103, (July 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.7.075103

KEYWORDS: Liquid crystals, Electrodes, Design and modelling, Lenses, Fabrication, Monochromatic aberrations, Cylindrical lenses, Liquids, Crystals, Modulation transfer functions

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Proceedings Article | 14 June 2023 Presentation

Discussion of theoretical and experimental steering performance limitations of newly designed tunable single-layer LCPG beam-steering device

Brandon Vreeland, Andre Van Rynbach, Philip Bos

Proceedings Volume 12530, 1253005 (2023) https://doi.org/10.1117/12.2678378

KEYWORDS: Beam steering, Electrodes, Liquid crystals, Instrument modeling, Switching, Prototyping, Polarization gratings, Performance modeling, Optics manufacturing, Optical lithography

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Proceedings Article | 3 October 2022 Presentation + Paper

Performance comparison of continuous optical beam steering approaches

Philip Bos, Brandon Vreeland, Andre Van Rynbach, Doug Bryant

Proceedings Volume 12207, 1220707 (2022) https://doi.org/10.1117/12.2633673

KEYWORDS: Liquid crystals, Beam steering, Switching, Electrodes, Adaptive optics, Finite-difference time-domain method, Refraction, Birefringence, Phased array optics, Diffraction

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Proceedings Article | 3 October 2022 Presentation + Paper

Wide aperture (50 mm), compact, and high-quality continuous focus tunable Gradient Refractive Index (GRIN) liquid crystal lenses

Afsoon Jamali, Douglas Bryant, Sandro Pintz, Philip Bos, Amit Bhowmick

Proceedings Volume 12217, 1221708 (2022) https://doi.org/10.1117/12.2633682

KEYWORDS: Liquid crystals, Lenses, Switching, Lens design, Refractive index, GRIN lenses

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Proceedings Article | 30 May 2022 Presentation

High steering resolution design of pancharatnam phase based optical laser beam steering device

Brandon Vreeland, Andre Rynbach, Philip Bos

Proceedings Volume PC12092, PC120920O (2022) https://doi.org/10.1117/12.2633937

KEYWORDS: Laser optics, Electrodes, Beam steering, Switching, Liquid crystals

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Proceedings Article | 7 March 2022 Poster + Paper

Improving the photoresponse of organic polarization-sensitive media by dimerizing the chromophoric component

Amit Bhowmick, Philip Bos, Irakli Chaganava, Barbara Kilosanidze, George Kakauridze, Irine Kobulashvili

Proceedings Volume 11998, 119980D (2022) https://doi.org/10.1117/12.2610109

KEYWORDS: Chromophores, Anisotropy, Molecules, Polarization, Polymers, Molecular aggregates, Polymethylmethacrylate

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Proceedings Article | 4 March 2022 Presentation + Paper

Large aperture 0 D-2.5 D tunable liquid crystal (LC) lens based on segmented phase profile for tunable focus application

Amit Kumar Bhowmick, Afsoon Jamali, Douglas Bryant, Sandro Pintz, Philip Bos

Proceedings Volume 12023, 1202303 (2022) https://doi.org/10.1117/12.2607484

KEYWORDS: Electrodes, Liquid crystals, Switching, Resistors, Photomasks, Virtual reality, Polarizers, Lens design, LCDs, Head-mounted displays

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Proceedings Article | 2 September 2021 Presentation + Paper

Single layer, tunable, liquid crystal based Pancharatnam phase devices

Philip Bos, Andre VanRynbach, Brandon Vreeland, Douglas Bryant, Comrun Yousefzadeh

Proceedings Volume 11807, 118070M (2021) https://doi.org/10.1117/12.2596462

KEYWORDS: Liquid crystals, Beam steering

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Proceedings Article | 5 March 2021 Presentation + Paper

Efficiency optimization of a tunable non-mechanical beam steering device based on fringe field switching and Pancharatnam phase

Philip Bos, Comrun Yousefzadeh, Andre Van Rynbach

Proceedings Volume 11707, 117070D (2021) https://doi.org/10.1117/12.2582861

KEYWORDS: Beam steering, Liquid crystals, Electro optics, Control systems, Unmanned vehicles, Switching, Optimization (mathematics), Optical simulations, Laser communications, LIDAR

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Proceedings Article | 20 August 2020 Presentation + Paper

A liquid crystal alignment layer that can be applied to preformed cavities

P. Bos, C. McGinty, V. Finnemeyer, R. Reich, H. Clark, S. Berry

Proceedings Volume 11472, 114720P (2020) https://doi.org/10.1117/12.2568813

KEYWORDS: Liquid crystals, Optical microcavities, Polarizers, Polymers, Optical alignment, Absorbance, Ultraviolet radiation, Thermography, Electro optics

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Proceedings Article | 25 February 2020 Presentation + Paper

Tunable liquid crystal beam steering device based on Pancharatnam phase

Comrun Yousefzadeh, Andre Van Rynbach, Philip Bos

Proceedings Volume 11303, 113030S (2020) https://doi.org/10.1117/12.2545234

KEYWORDS: Liquid crystals, Beam steering, Phased array optics, Instrument modeling, Polarization, Electro-optical engineering, LIDAR

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SPIE Journal Paper | 15 October 2018 Open Access

LC lens systems to solve accommodation/convergence conflict in three-dimensional and virtual reality displays

Afsoon Jamali, Comrun Yousefzadeh, Colin McGinty, Douglas Bryant, Philip Bos

OE, Vol. 57, Issue 10, 105101, (October 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.10.105101

KEYWORDS: Eye, Imaging systems, Spiral phase plates, 3D displays, Virtual reality, Liquid crystals, Glasses, Cameras, Lens design, Electrodes

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Proceedings Article | 18 September 2018 Presentation + Paper

Sensitive uncooled thermal imager based on liquid crystal Fabry-Perot interferometer

Colin McGinty, Philip Bos

Proceedings Volume 10766, 1076606 (2018) https://doi.org/10.1117/12.2319394

KEYWORDS: Fabry–Perot interferometers, Thermography, Liquid crystals, Birefringence, Refraction, Transducers, Fabry–Perot interferometry, Visible radiation

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Proceedings Article | 23 September 2016 Presentation + Paper

A non-mechanical zoom lens fabricated from liquid crystal reactive mesogens

Colin McGinty, Philip Bos, Kun Gao, Achintya Bhowmik

Proceedings Volume 9940, 99400X (2016) https://doi.org/10.1117/12.2237324

KEYWORDS: Zoom lenses, Liquid crystals, Polarization, Image quality, Composites, Glasses, Cameras, Machine vision, Ray tracing, Computing systems

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Proceedings Article | 19 September 2016 Paper

Liquid crystal uncooled thermal imager development

R. Reich, S. Berry, H. Clark, V. Finnemeyer, P. Bos, C. McGinty, D. Bryant, C. Bozler

Proceedings Volume 9974, 99740E (2016) https://doi.org/10.1117/12.2242295

KEYWORDS: Liquid crystals, Imaging systems, Thermography, Microbolometers, Transducers, Sensors, Visible radiation, Silicon, Birefringence, Infrared imaging

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SPIE Journal Paper | 16 October 2013 Open Access

Fast-response liquid crystal variable optical retarder and multilevel attenuator

HsienHui Cheng, Achintya Bhowmik, Philip Bos

OE, Vol. 52, Issue 10, 107105, (October 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.10.107105

KEYWORDS: Liquid crystals, Wave plates, Attenuators, Crystal optics, Camera shutters, 3D displays, Birefringence, Polarizers, Optical engineering, Switching

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Proceedings Article | 29 May 2013 Paper

Feasibility study of birefringent electro-optic NIR FTS imaging systems

Valerie Finnemeyer, Philip Bos

Proceedings Volume 8726, 87260W (2013) https://doi.org/10.1117/12.2015388

KEYWORDS: Crystals, Polarization, Michelson interferometers, Spectrometers, Fourier transforms, Mirrors, Liquid crystals, Geometrical optics, Signal detection, Near infrared

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SPIE Journal Paper | 13 March 2013

Near-diffraction-limited tunable liquid crystal lens with simplified design

Liwei Li, Doug Bryant, Tony Van Heugten, Dwight Duston, Philip Bos

OE, Vol. 52, Issue 03, 035007, (March 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.3.035007

KEYWORDS: Liquid crystals, Glasses, Electrodes, Lens design, Phase measurement, Resistors, Modulation transfer functions, Point spread functions, Charge-coupled devices, Light scattering

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Proceedings Article | 8 September 2011 Paper

LCD failure evaluation methods and application to effect of dc drive

Aman Alagh, Philip Bos, Lu Lu

Proceedings Volume 8114, 811416 (2011) https://doi.org/10.1117/12.893608

KEYWORDS: LCDs, Ions, Liquid crystals, Image segmentation, Glasses, Indium, Tin, Infrared spectroscopy, Failure analysis, Microscopes

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Proceedings Article | 18 January 2011 Paper

Modeling and design of a tunable refractive lens based on liquid crystals

Doug Bryant, Tony Van Heugten, Philip Bos, Liwei Li, Dwight Duston, Lei Shi

Proceedings Volume 7944, 79440S (2011) https://doi.org/10.1117/12.876221

KEYWORDS: Electrodes, Liquid crystals, Eye, Refractive index, Mach-Zehnder interferometers, Resistors, Image resolution, Eye models, Birefringence, Silica

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Proceedings Article | 18 January 2011 Paper

The effect on Strehl ratio from thickness variations in liquid crystal diffractive lenses

Dwight Duston, Lei Shi, Lu Lu, Tony Van Heugten, Philip Bos

Proceedings Volume 7944, 79440Z (2011) https://doi.org/10.1117/12.875893

KEYWORDS: Liquid crystals, Liquids, Crystals, Lenses, Near field optics, Refractive index, Electrodes, Liquid lenses, Mathematics, Ions

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SPIE Journal Paper | 1 November 2007

Wide-angle achromatic prism beam steering for infrared countermeasures and imaging applications: solving the singularity problem in the two-prism design

Philip Bos, Henry Garcia, Vassili Sergan

OE, Vol. 46, Issue 11, 113001, (November 2007) https://doi.org/10.1117/12.10.1117/1.2802147

KEYWORDS: Prisms, Beam steering, Infrared countermeasures, Mid-IR, Dispersion, Missiles, Optical engineering, Refraction, Infrared radiation, Infrared imaging

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SPIE Journal Paper | 1 April 2007

Modeling and performance limits of a large aperture high-resolution wavefront control system based on a liquid crystal spatial light modulator

Xinghua Wang, Bin Wang, Philip Bos, Paul McManamon, John Pouch, Félix Miranda, James Anderson

OE, Vol. 46, Issue 04, 044001, (April 2007) https://doi.org/10.1117/12.10.1117/1.2730485

KEYWORDS: Wavefronts, Diffraction, Electrodes, Mirrors, Monochromatic aberrations, Performance modeling, Spatial light modulators, Liquid crystals, Telescopes, Wavefront aberrations

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Proceedings Article | 25 October 2006 Paper

Evaluation of a high-throughput liquid crystal tunable filter for Raman chemical imaging of threat materials

Philip Bos, Thomas Voigt, Matthew Nelson, Patrick Treado, Xinghua Wang

Proceedings Volume 6378, 637808 (2006) https://doi.org/10.1117/12.686265

KEYWORDS: Raman spectroscopy, Tunable filters, Optical filters, Liquid crystals, Spectroscopy, Imaging spectroscopy, Cameras, Aluminum, Signal to noise ratio, Spectral resolution

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SPIE Journal Paper | 1 December 2005

Control of dispersion in form birefringent-based holographic optical retarders

Erica Montbach, Philip Bos

OE, Vol. 44, Issue 12, 124001, (December 2005) https://doi.org/10.1117/12.10.1117/1.2148887

KEYWORDS: Holograms, Wave plates, Birefringence, LCDs, Liquid crystals, Holography, Dielectrics, Refraction, Phase shifts, Optical simulations

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SPIE Journal Paper | 1 December 2005

Broadband optical phased-array beam steering

Paul McManamon, Jianru Shi, Philip Bos

OE, Vol. 44, Issue 12, 128004, (December 2005) https://doi.org/10.1117/12.10.1117/1.2149374

KEYWORDS: Phased array optics, Beam steering, Electrodes, Liquid crystals, Diffraction, Optical engineering, Optical design, Diffraction gratings, Beam splitters, Wavefronts

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Proceedings Article | 7 October 2005 Paper

Simulation, registration and reconstruction of digital holograms of arbitrary objects by means of liquid crystal on silicon spatial light modulator

Aneta Michalkiewicz, Philip Bos, Xingua Wang, Oksana Budnyk, Ruslan Lymarenko, Malgorzata Kujawinska

Proceedings Volume 5947, 59470G (2005) https://doi.org/10.1117/12.621834

KEYWORDS: Holograms, Digital holography, Liquid crystal on silicon, Optoelectronics, Computer generated holography, Wavefronts, 3D image reconstruction, Spatial light modulators, Image registration, Optical simulations

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Proceedings Article | 30 August 2005 Paper

Modeling of optical aberration correction using a liquid crystal device

Xinghua Wang, John Pouch, Philip Bos, Felix Miranda, Bin Wang, Paul McManamon

Proceedings Volume 5894, 589411 (2005) https://doi.org/10.1117/12.626284

KEYWORDS: Liquid crystals, Wavefronts, Mirrors, LCDs, Optical calibration, Telescopes, Spatial light modulators, Picosecond phenomena, Instrument modeling, Optical aberrations

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Proceedings Article | 1 August 2005 Paper

Nonmechanical steering of the field of view of broad spectral band optical systems

Philip Bos, Paul McManamon, Jianru Shi, Edward Watson

Proceedings Volume 5873, (2005) https://doi.org/10.1117/12.614932

KEYWORDS: Beam steering, Phased array optics, Dispersion, Liquid crystals, Fourier transforms, Microlens array, Imaging systems, Electrodes, Polymers, Microlens

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Proceedings Article | 12 April 2005 Paper

Liquid crystal designs for high contrast field sequential color liquid crystal on silicon (LCoS) microdisplays

Cheng Chen, James Anderson, Philip Bos

Proceedings Volume 5741, (2005) https://doi.org/10.1117/12.591525

KEYWORDS: Liquid crystals, Wave plates, Liquid crystal on silicon, Polarization, LCDs, Switching, Imaging systems, Polarizers, Birefringence, Chromium

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Proceedings Article | 14 February 2005 Paper

Phase manipulation and optoelectronic reconstruction of digital holograms by means of LCOS spatial light modulator

Leszek Salbut, Malgorzata Kujawinska, Jerzy Krezel, Philip Bos, Xinghua Wang, Aneta Michalkiewicz

Proceedings Volume 5776, (2005) https://doi.org/10.1117/12.611619

KEYWORDS: Digital holography, Liquid crystal on silicon, Holograms, Phase shifts, Optoelectronics, Phase shifting, Holography, Holographic interferometry, 3D metrology, Beam shaping

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SPIE Journal Paper | 1 November 2004

Performance evaluation of a liquid-crystal-on-silicon spatial light modulator

Xinghua Wang, Bin Wang, John Pouch, Felix Miranda, James Anderson, Philip Bos

OE, Vol. 43, Issue 11, (November 2004) https://doi.org/10.1117/12.10.1117/1.1794706

KEYWORDS: Wavefronts, Liquid crystal on silicon, Liquid crystals, Diffraction, Phased array optics, Photovoltaics, Wavefront compensation, Birefringence, Refractive index, Control systems

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Proceedings Article | 12 October 2004 Paper

Spatial resolution limitation of liquid crystal spatial light modulator

Bin Wang, Felix Miranda, John Pouch, Paul McManamon, James Anderson, Philip Bos, Xinghua Wang

Proceedings Volume 5553, (2004) https://doi.org/10.1117/12.559283

KEYWORDS: Liquid crystals, Electrodes, Diffraction, Spatial resolution, Phase modulation, Diffraction gratings, Phased array optics, Spatial light modulators, Finite-difference time-domain method, Birefringence

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Proceedings Article | 12 October 2004 Paper

Switchable optical phased prism arrays for beam steering

Bruce Winker, Jianru Shi, Paul McManamon, Philip Bos

Proceedings Volume 5553, (2004) https://doi.org/10.1117/12.581195

KEYWORDS: Prisms, Polarization, Beam steering, Diffraction, Liquid crystals, Optical arrays, Phased array optics, Phase compensation, Atrial fibrillation, Analytical research

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Proceedings Article | 15 September 2004 Paper

Laser beam steering/shaping with LCoS 2D OPA for free space optical communication

John Pouch, Bin Wang, Xinghua Wang, Felix Miranda, Paul McManamon, Philip Bos, James Anderson

Proceedings Volume 5403, (2004) https://doi.org/10.1117/12.543809

KEYWORDS: Liquid crystal on silicon, Diffraction, Liquid crystals, Mirrors, Spatial light modulators, Wavefronts, Wavefront aberrations, Beam steering, Free space optical communications, Wavefront compensation

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Proceedings Article | 2 August 2004 Paper

Holographic three-dimensional displays with liquid crystal on silicon spatial light modulator

Malgorzata Kujawinska, Tomasz Kozacki, Xinghua Wang, Aneta Michalkiewicz, Philip Bos

Proceedings Volume 5531, (2004) https://doi.org/10.1117/12.560762

KEYWORDS: Holograms, Digital holography, Liquid crystal on silicon, Optoelectronics, Diffraction, Holography, 3D image reconstruction, Liquid crystals, Digital recording, Charge-coupled devices

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Proceedings Article | 2 August 2004 Paper

Active microinterferometer with liquid crystal on silicon (LCOS) for extended range static and dynamic micromembrane measurement

Xinghua Wang, Philip Bos, Malgorzata Kujawinska, Jacek Kacperski

Proceedings Volume 5532, (2004) https://doi.org/10.1117/12.560904

KEYWORDS: Liquid crystal on silicon, Interferometers, Phase shifts, Interferometry, Mirrors, Wavefronts, Chemical elements, Ferroelectric materials, Liquid crystals, Calibration

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Proceedings Article | 28 May 2004 Paper

The geometrical optics approach in liquid crystal cells with two- and three-dimensional director variations

Jack Kelly, David Allender, George Panasyuk, Eugene Gartland, Philip Bos

Proceedings Volume 5289, (2004) https://doi.org/10.1117/12.530704

KEYWORDS: Liquid crystals, Geometrical optics, Beam propagation method, Transmittance, Diffraction, Head-mounted displays, Optical properties, Electrodes, Jones calculus, LCDs

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SPIE Journal Paper | 1 April 2004

Computing the liquid crystal director field in optical phased arrays

George Barrick, Philip Bos, Charles Titus, Bruce Winker

OE, Vol. 43, Issue 04, (April 2004) https://doi.org/10.1117/12.10.1117/1.1666821

KEYWORDS: Liquid crystals, Electrodes, Diffraction, Electro optics, Phased array optics, Electro optical modeling, Molecules, Birefringence, Instrument modeling, Dielectrics

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Proceedings Article | 5 January 2004 Paper

Study of switchable liquid crystal polymer grating by finite-difference time-domain calculation

Xinghua Wang, Philip Bos, Bin Wang

Proceedings Volume 5213, (2004) https://doi.org/10.1117/12.511508

KEYWORDS: Liquid crystals, Polymers, Finite-difference time-domain method, Diffraction gratings, Diffraction, Geometrical optics, Near field, Refractive index, Computer simulations, Ultraviolet radiation

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Proceedings Article | 11 December 2003 Paper

Liquid crystal on silicon (LCOS) wavefront corrector and beam steerer

Michael Fisch, James Anderson, Vassili Sergan, John Pouch, Bin Wang, Xinghua Wang, Felix Miranda, Philip Bos

Proceedings Volume 5162, (2003) https://doi.org/10.1117/12.511504

KEYWORDS: Liquid crystal on silicon, Wavefronts, Diffraction, Beam steering, Liquid crystals, Wavefront compensation, Finite-difference time-domain method, Diffraction gratings, Optical simulations, Control systems

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SPIE Journal Paper | 1 April 2003

Wide angle achromatic prism beam steering for infrared countermeasure applications

Bradley Duncan, Philip Bos, Vassili Sergan

OE, Vol. 42, Issue 04, (April 2003) https://doi.org/10.1117/12.10.1117/1.1556393

KEYWORDS: Prisms, Mid-IR, Zinc, Beam steering, Laser induced fluorescence, Infrared materials, Refraction, Electroluminescence, Infrared countermeasures, Optical engineering

Proceedings Article | 6 November 2002 Paper

Diffraction efficiency of thin film holographic beam steering devices

John Pouch, Hung Nguyen, Felix Miranda, Charles Titus, Philip Bos

Proceedings Volume 4825, (2002) https://doi.org/10.1117/12.453891

KEYWORDS: Electrodes, Beam steering, Liquid crystals, Diffraction gratings, Diffraction, Spatial resolution, Finite-difference time-domain method, Silicon, Holography, Mirrors

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Proceedings Article | 29 July 2002 Paper

Wide-angle beam steering for infrared countermeasures applications

Vasa Sergen, Bradley Duncan, Phil Bos, Jennifer Gibson

Proceedings Volume 4723, (2002) https://doi.org/10.1117/12.476401

KEYWORDS: Prisms, Beam steering, Transmittance, Glasses, Infrared countermeasures, Lenses, Mid-IR, Refraction, Germanium, Lens design

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SPIE Journal Paper | 1 January 2002

Synthesis of a color image display using birefringent filters

Salman Saeed, Philip Bos

OE, Vol. 41, Issue 01, (January 2002) https://doi.org/10.1117/12.10.1117/1.1419020

KEYWORDS: Optical filters, Wave plates, Polarizers, Digital filtering, Polarization, LCDs, Liquid crystals, Active optics, Image filtering, Optical components

Proceedings Article | 4 June 2001 Paper

Modeling volume holograms using Berreman 4x4 method

Erica Bramley, Philip Bos

Proceedings Volume 4296, (2001) https://doi.org/10.1117/12.429470

KEYWORDS: Holograms, Birefringence, Glasses, Light sources, Volume holography, Polarizers, Dielectrics, Reflectivity, Refraction, Transmittance

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Proceedings Article | 28 December 2000 Paper

Design of nematic liquid crystal mode for the application of field sequential color microdisplay

Hyun Hwang, Chul-Shik Cho, Jong Lee, Seung Kang, Philip Bos

Proceedings Volume 4207, (2000) https://doi.org/10.1117/12.411757

KEYWORDS: Liquid crystals, Polymers, Ultraviolet radiation, Liquid crystal on silicon, LCDs, Molecules, Ferroelectric LCDs, Coating, Glasses, Photopolymers

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Proceedings Article | 1 June 1999 Paper

Efficient accurate liquid crystal digital light deflector

Oleg Lavrentovich, Charles Titus, Philip Bos

Proceedings Volume 3633, (1999) https://doi.org/10.1117/12.349334

KEYWORDS: Prisms, Liquid crystals, Switches, Scattering, Polarization, Refractive index, Birefringence, Crystals, Light scattering, Composites

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Proceedings Article | 14 October 1998 Paper

Cholesteric diffraction devices with a field-controlled grating vector

Sergey Shiyanovskii, Oleg Lavrentovich, Darius Subacius, Philip Bos, Dmitry Voloschenko

Proceedings Volume 3475, (1998) https://doi.org/10.1117/12.326891

KEYWORDS: Diffraction, Modulation, Diffraction gratings, Liquid crystals, Electrodes, Beam steering, Dielectrics, Molecules, Computer simulations, Anisotropy

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Proceedings Article | 20 April 1998 Paper

Patterned alignment liquid-crystal diffractive spatial light modulators and devices

Michael Miller, William Glenn, Carvel Holton, Philip Bos

Proceedings Volume 3292, (1998) https://doi.org/10.1117/12.305504

KEYWORDS: Diffraction, Spatial light modulators, Electrodes, Liquid crystals, Modulation, Diffraction gratings, Polarization, Reflectivity, Optical alignment, Optical lithography

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Proceedings Article | 20 April 1998 Paper

Electrically controlled cholesteric gratings

Philip Bos, Darius Subacius, Oleg Lavrentovich, Sergey Shiyanovskii

Proceedings Volume 3292, (1998) https://doi.org/10.1117/12.305505

KEYWORDS: Diffraction, Modulation, Diffraction gratings, Electrodes, Beam steering, Liquid crystals, Molecules, Radon, Dielectrics, Polarization

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Proceedings Article | 24 April 1995 Paper

Polymer-modified TN and supertwisted nematic (STN) devices

Jianlin Li, Deng Ke Yang, J. William Doane, Philip Bos

Proceedings Volume 2408, (1995) https://doi.org/10.1117/12.207500

KEYWORDS: Polymers, Liquid crystals, Electro optics, Scattering, Capacitance, Dielectrics, LCDs, Glasses, Ultraviolet radiation, Lithium

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SPIE Journal Paper | 1 June 1993 Open Access

Book Review: Liquid Crystals, Applications and Uses. Edited by Birendra Bahadur

Philip Bos

OE, Vol. 32, Issue 06, (June 1993) https://doi.org/10.1117/12.10.1117/1.OE.32.6.bkrvw2

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Showing 5 of 56 publications

Conference Committee Involvement (10)

Display Technologies and Applications for Defense, Security, and Avionics IX

22 April 2015 | Baltimore, MD, United States

Advanced Wavefront Control: Methods, Devices, and Applications VIII

5 August 2010 | San Diego, California, United States

Advanced Wavefront Control: Methods, Devices, and Applications VII

6 August 2009 | San Diego, California, United States

Advanced Wavefront Control: Methods, Devices, and Applications VI

14 August 2008 | San Diego, California, United States

Advanced Wavefront Control: Methods, Devices, and Applications V

29 August 2007 | San Diego, California, United States

Showing 5 of 10 Conference Committees

Course Instructor

SC251: LCD Applications: Current and Future

The course opens with an in-depth introduction to the basic electro-optic effects and devices including the TN, ECB, and STN devices. The second part is devoted to advances in LC technology to address the need for wider viewing angles and lower power consumption.

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