Dr. Neil Collings Profile

Dr. Neil Collings

Principal Research Engineer at Envisics

SPIE Involvement:

Author

Publications (37)

Proceedings Article | 21 November 2017

MEMS deformable mirror for wavefront correction of large telescopes

Sigmund Manhart, Gleb Vdovin, Neil Collings, Zoran Sodnik, Susanne Nikolov, Werner Hupfer

Proc. SPIE. 10569, International Conference on Space Optics — ICSO 2000

KEYWORDS: Microelectromechanical systems, Actuators, Monochromatic aberrations, Telescopes, Mirrors, Electrodes, Wavefront sensors, Wavefronts, Deformable mirrors, Micromachined deformable membrane mirrors

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Proceedings Article | 12 September 2013 Paper

Tunable liquid crystal lens for a holographic projection system

Neil Collings, Yi-Hsin Lin, Hung-Chun Lin, Ming-Syuan Chen

Proc. SPIE. 8828, Liquid Crystals XVII

KEYWORDS: Diffraction, Holography, Semiconductor lasers, Liquid crystal on silicon, Solids, Projection systems, Liquid crystals, Zoom lenses, Photonic integrated circuits, Fresnel lenses

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Proceedings Article | 28 February 2012 Paper

A method to introduce accommodation cues into 3D integral imaging system using Fresnel holograms

J.-S. Chen, N. Collings, D. P. Chu

Proc. SPIE. 8288, Stereoscopic Displays and Applications XXIII

KEYWORDS: Holograms, Holography, Gaussian beams, 3D image enhancement, Digital holography, Imaging systems, Digital imaging, 3D displays, Integral imaging, 3D image processing

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Proceedings Article | 25 January 2012 Paper

Reduction of crosstalk in a colourless multicasting LCOS-based wavelength selective switch by the application of wavefront encoding

Brian Robertson, Zichen Zhang, Haining Yang, Maura Redmond, Neil Collings, Jinsong Liu, Ruisheng Lin, Anna Jeziorska-Chapman, John Moore, William Crossland, D. Chu

Proc. SPIE. 8284, Next-Generation Optical Communication: Components, Sub-Systems, and Systems

KEYWORDS: Optical fibers, Diffraction, Monochromatic aberrations, Switches, Fourier transforms, Wavefronts, Computer programming, Spatial light modulators, Liquid crystal on silicon, Diffraction gratings

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Proceedings Article | 22 September 2011 Paper

Compact holographic optical interconnections using nematic liquid crystal spatial light modulators

T. Lu, B. Robertson, N. Collings

Proc. SPIE. 8167, Optical Design and Engineering IV

KEYWORDS: Optical fibers, GRIN lenses, Optical design, Holography, Switches, Computer generated holography, Spatial light modulators, Liquid crystal on silicon, Liquid crystals, Diffraction gratings

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SPIE Journal Paper | 1 July 2011

Full parallax three-dimensional display with occlusion effect using computer generated hologram

Hao Zhang, Neil Collings, Jing Chen, Bill Crossland, Daping Chu, Jinghui Xie

OE Vol. 50 Issue 07

KEYWORDS: Computer generated holography, Holograms, Spatial light modulators, 3D displays, 3D image processing, Holography, Reconstruction algorithms, Diffraction, 3D image reconstruction, Visualization

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Proceedings Article | 18 August 2010 Paper

Holographic projection based on tapered lasers and nematic liquid crystal on silicon devices

N. Collings, M. Reufer, R. Penty, B. Sumpf, M. Safer, D. Chu, W. Crossland

Proc. SPIE. 7775, Liquid Crystals XIV

KEYWORDS: Laser sources, Mirrors, Holograms, Holography, Modulation, Laser development, Spatial light modulators, Liquid crystal on silicon, LCDs, Projection systems

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Proceedings Article | 18 February 2010 Paper

High quality assembly of liquid crystal on silicon (LCOS) devices for phase-only holography

Z. Zhang, A. Jeziorska-Chapman, N. Collings, M. Pivnenko, J. Moore, W. Milne, W. Crossland, D. Chu

Proc. SPIE. 7618, Emerging Liquid Crystal Technologies V

KEYWORDS: Holography, Optical fabrication equipment, Custom fabrication, Modulation, Glasses, Silicon, Inspection, Optical fabrication, Liquid crystal on silicon, Liquid crystals

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Proceedings Article | 1 December 2009 Paper

Reconfigurable free-space optical switching technologies for storage area networks

N. Collings, H.-H. Chou, F. Zhang, W. Crossland

Proc. SPIE. 7632, Optical Transmission Systems, Switching, and Subsystems VII

KEYWORDS: Switches, Optical amplifiers, Coarse wavelength division multiplexing, Switching, Receivers, Single mode fibers, Spatial light modulators, Free space optics, Optical switching, Camera shutters

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Proceedings Article | 12 September 2007 Paper

Switching properties of VAN LCoS devices with ultra-microscale electrodes

R. Ghannam, N. Collings, W. Crossland, R. James, S. Day, A. Fernandez

Proc. SPIE. 6654, Liquid Crystals XI

KEYWORDS: Microscopes, Switches, Switching, Polymethylmethacrylate, Electrodes, Silicon, Spatial light modulators, Liquid crystal on silicon, Liquid crystals, Transistors

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Proceedings Article | 12 September 2007 Paper

Implementation of colorless shutter-based free-space optical interconnections using ferroelectric liquid crystal spatial light modulators

H.-H. Chou, N. Collings, T. D. Wilkinson, F. Zhang, W. A. Crossland

Proc. SPIE. 6654, Liquid Crystals XI

KEYWORDS: Transceivers, Switches, Coarse wavelength division multiplexing, Switching, Single mode fibers, Spatial light modulators, Optical switching, Optical interconnects, Ferroelectric LCDs, Camera shutters

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Proceedings Article | 15 September 2006 Paper

Single layer liquid crystal optically addressed spatial light modulators

N. Collings, O. Trushkevych, W. Crossland, T. Wilkinson

Proc. SPIE. 6332, Liquid Crystals X

KEYWORDS: Diffraction, Holograms, Holography, Switching, 3D image reconstruction, Modulation, Crystals, Liquid crystals, Optically addressed spatial light modulators, Fullerenes

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Proceedings Article | 15 September 2006 Paper

Topological alignment of NLCs using nanoscale metallic grooves

R. Ghannam, N. Collings, W. Crossland, T. Wilkinson

Proc. SPIE. 6332, Liquid Crystals X

KEYWORDS: Microscopes, Photodetectors, Electrodes, Metals, Silicon, Polarizers, Liquid crystal on silicon, Liquid crystals, Aluminum, Optical alignment

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Proceedings Article | 11 February 2005 Paper

Free-space optical switching core for storage area network

Fan Zhang, Neil Collings, William Crossland, Timothy Wilkinson, Mark Fan, Mohammad Taghizadeh, Andrew Waddie

Proc. SPIE. 5625, Optical Transmission, Switching, and Subsystems II

KEYWORDS: Optical design, Holograms, Switches, Switching, Data storage, Spatial light modulators, Transmittance, Free space optics, Optical switching, Camera shutters

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SPIE Journal Paper | 1 January 2005

Phase-modulating bistable optically addressed spatial light modulators using wide-switching-angle ferroelectric liquid crystal layer

Solon Mias, Ilias Manolis, Neil Collings, Timothy Wilkinson, William Crossland

OE Vol. 44 Issue 01

KEYWORDS: Optically addressed spatial light modulators, Diffraction, Switching, Phase modulation, Liquid crystals, Amplitude modulation, Bistability, Binary data, Optical engineering, Ferroelectric LCDs

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Proceedings Article | 16 November 2004 Paper

Shutter-based switching core for an optical packet switch

Neil Collings, Fan Zhang, Mark Fan, Robin Scarr, Timothy Wilkinson, William Crossland

Proc. SPIE. 5579, Photonics North 2004: Photonic Applications in Telecommunications, Sensors, Software, and Lasers

KEYWORDS: Switches, Switching, Spatial light modulators, Free space optics, Vertical cavity surface emitting lasers, Connectors, Optical switching, Optical interconnects, Camera shutters, Network architectures

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Proceedings Article | 15 October 2004 Paper

Stable dopant for liquid crystals as materials for optically addressed spatial light modulators

Oksana Ruzak, Neil Collings, William Crossland, Anthony Davey, Timothy Wilkinson

Proc. SPIE. 5518, Liquid Crystals VIII

KEYWORDS: Amorphous silicon, Diffraction, Holography, Switching, Molecules, Doping, Spatial light modulators, Liquid crystals, Optically addressed spatial light modulators, Absorption

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Proceedings Article | 8 September 2004 Paper

SLM reconfiguration time in optically interconnected packet switch

C. H. M Fan, William Crossland, Timothy Wilkinson, Neil Collings, Fan Zhang

Proc. SPIE. 5453, Micro-Optics, VCSELs, and Photonic Interconnects

KEYWORDS: Switches, Switching, Detector arrays, Spatial light modulators, Vertical cavity surface emitting lasers, Optical interconnects, Circuit switching, Camera shutters, Network architectures, Packet switching

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Proceedings Article | 8 September 2004 Paper

Charge-injecting layers for liquid crystal light valves

Neil Collings, Timothy Wilkinson, Anna Jeziorska, A. Davey, Bijan Movaghar, William Crossland

Proc. SPIE. 5464, Organic Optoelectronics and Photonics

KEYWORDS: Amorphous silicon, Electrodes, Metals, Photoresistors, Interfaces, Liquid crystals, Excitons, Light valves, Self-assembled monolayers, Absorption

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Proceedings Article | 5 January 2004 Paper

Optically addressed spatial light modulator: performance and applications

Neil Collings, Solon Mias, Timothy Wilkinson, Adrian Travis, J. Moore, William Crossland

Proc. SPIE. 5213, Liquid Crystals VII

KEYWORDS: Amorphous silicon, Light emitting diodes, Switching, Phase modulation, Liquid crystals, Electro optics, Optically addressed spatial light modulators, 3D displays, Dielectric polarization, Amplitude modulation

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SPIE Journal Paper | 1 January 2004

Optical design of a tiled large-area photoluminescent liquid-crystal display

Nalliah Raman, William Crossland, Nicholas Lawrence, Timothy Wilkinson, Anthony Davey, Neil Collings, S. Ahn

OE Vol. 43 Issue 01

KEYWORDS: Liquid crystals, Optical design, LCDs, Modulation transfer functions, Reflection, Transmittance, Lens design, Optical engineering, Nonimaging optics, Imaging systems

SPIE Journal Paper | 1 July 2003

Spatial sampling in pixelated-metal-mirror ferroelectric-liquid-crystal optically addressed spatial-light-modulator devices

Solon Mias, Neil Collings, Timothy Wilkinson, Stuart Coomber, Maurice Stanley, William Crossland

OE Vol. 42 Issue 07

KEYWORDS: Optically addressed spatial light modulators, Mirrors, Diffraction, Diffraction gratings, Spatial frequencies, Binary data, Polarizers, Modulation, Aluminum, Signal processing

SPIE Journal Paper | 1 October 2002

Dual purpose two-way optics for multimedia communication

Nalliah Raman, Neil Collings, Rafie Mavaddat

OE Vol. 41 Issue 10

KEYWORDS: Image processing, Signal processing, Image acquisition, Composites, Neurons, Optical communications, Imaging systems, Photodetectors, Liquid crystals, Multimedia

Proceedings Article | 24 May 2000 Paper

Packet switching network based on optical fan-in

Neil Collings, William Crossland, Tim Wilkinson, Robin Scarr, Trevor Hall

Proc. SPIE. 4089, Optics in Computing 2000

KEYWORDS: Photodetectors, Switches, Switching, Sensors, Liquid crystals, Vertical cavity surface emitting lasers, Optical networks, Optical interconnects, Camera shutters, Packet switching

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Proceedings Article | 3 May 2000 Paper

Image-tiling system using optically addressed spatial light modulator for high-resolution and multiview 3D display

Hyung-Wook Jeon, Adrian Travis, Neil Collings, Tim Wilkinson, Y. Frauel

Proc. SPIE. 3957, Stereoscopic Displays and Virtual Reality Systems VII

KEYWORDS: Diffraction, Holograms, Image segmentation, Video, Projection systems, Liquid crystals, Optically addressed spatial light modulators, 3D displays, Binary data, 3D image processing

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Proceedings Article | 3 November 1999 Paper

Recent progress in technology and applications of membrane micromachined deformable mirrors

Gleb Vdovin, Pasqualina Sarro, Frederic Gonte, Neil Collings, Rene Daendliker

Proc. SPIE. 3760, High-Resolution Wavefront Control: Methods, Devices, and Applications

KEYWORDS: Mirrors, Femtosecond phenomena, Sensors, Calibration, Luminescence, Wavefronts, Adaptive optics, Deformable mirrors, Spherical lenses, Micromachined deformable membrane mirrors

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Proceedings Article | 2 June 1999

Optical neural networks using liquid crystal devices

N. Collings

Proc. SPIE. 10296, 1999 Euro-American Workshop Optoelectronic Information Processing: A Critical Review

KEYWORDS: Matrices, LCDs, Liquid crystals, Neural networks, Light valves

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Proceedings Article | 22 May 1998 Paper

All-optical recurrent neural network

Christoph Berger, Neil Collings

Proc. SPIE. 3490, Optics in Computing '98

KEYWORDS: Beam splitters, Imaging systems, Pattern recognition, Televisions, Liquid crystals, Neural networks, Light valves, Optical pattern recognition, Liquid crystal lasers, Neurons

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Proceedings Article | 22 May 1998 Paper

Spatial light modulators based on chalcogenide glass photoconductor/liquid-crystal structure operating in pulse regime

Fiodor Vladimirov, Aleksander Chaika, Nina Pletneva, Ivan Morichev, Neil Collings

Proc. SPIE. 3490, Optics in Computing '98

KEYWORDS: Optical components, Chalcogenide glass, Diffraction, Holography, Modulation, Spatial frequencies, Photoresistors, Spatial light modulators, Liquid crystals, Integrated optics

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Proceedings Article | 22 May 1998 Paper

Progress in the construction of a multilayer optical neural network

Alireza Pourzand, Neil Collings

Proc. SPIE. 3490, Optics in Computing '98

KEYWORDS: Lithium, Polarization, Photoresistors, Reflectivity, Polarizers, Liquid crystals, Neural networks, Free space optics, Light valves, Binary data

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Proceedings Article | 1 April 1998 Paper

Recurrent optical neural network for the study of pattern dynamics

Christoph Berger, Neil Collings, Daniel Gehriger

Proc. SPIE. 3402, Optical Information Science and Technology (OIST97): Optical Memory and Neural Networks

KEYWORDS: Diffraction, Microlens array, Photography, Televisions, Microlens, Liquid crystals, Neural networks, Feedback loops, Light valves, Neurons

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Proceedings Article | 20 May 1996 Paper

Analog spatial light modulator for learning in neural networks

T.C. Yu, Robert Mears, Anthony Davey, William Crossland, M. Snook, Neil Collings, Martin Birch

Proc. SPIE. 2800, Nonlinear Optical Interactions and Wave Dynamics

KEYWORDS: Switching, Modulation, Silicon, Phase shift keying, Optoelectronics, Liquid crystals, Neural networks, Very large scale integration, Electro optics, Ferroelectric LCDs

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Proceedings Article | 28 August 1995 Paper

Construction of a programmable multilayer analogue neural network using space invariant interconnects

Neil Collings, Alireza Pourzand, Reinhard Voelkel

Proc. SPIE. 2565, Optical Implementation of Information Processing

KEYWORDS: Diffraction, Optical design, Electronics, Imaging systems, Calibration, Televisions, Liquid crystals, Neural networks, Light valves, Diffraction gratings

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Proceedings Article | 7 December 1994 Paper

Smart VLSI/FELC spatial light modulators for neural networks

T.C. Yu, Robert Mears, Anthony Davey, William Crossland, M. Snook, Neil Collings, Martin Birch

Proc. SPIE. 2430, Optical Memory & Neural Networks '94: Optical Neural Networks

KEYWORDS: Electronics, Switching, Silicon, Modulators, Spatial light modulators, Optoelectronics, Liquid crystals, Neural networks, Liquids, Neurons

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Proceedings Article | 12 July 1993 Paper

Use of optical hardware to find good solutions to the traveling salesman problem

Neil Collings, R. Sumi, Kenneth Weible, Bruno Acklin, Wei Xue

Proc. SPIE. 1806, Optical Computing

KEYWORDS: Photodetectors, Silicon, Optoelectronics, Very large scale integration, Chemical elements, Analog electronics, Optical computing, Optical interconnects, Tolerancing, Neurons

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Proceedings Article | 28 June 1993 Paper

Use of bistable GaAs Fabry-Perot devices as all-optical logic gates

C. Bagnoud, B. Acklin, Neil Collings

Proc. SPIE. 1807, Photonic Switching

KEYWORDS: Diffraction, Mirrors, Fabry–Perot interferometers, Switches, Switching, Polarization, Gallium arsenide, Diffusion, Logic devices, Semiconducting wafers

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Proceedings Article | 1 September 1991 Paper

Efficiency of liquid-crystal light valves as polarization rotators

Neil Collings, Wei Xue, Giancarlo Pedrini

Proc. SPIE. 1505, Optics for Computers: Architectures and Technologies

KEYWORDS: Polarization, Calibration, Molecules, Photoresistors, Computing systems, Liquid crystals, Light valves, Computer architecture, Dielectric mirrors, Dielectric polarization

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