Dr. Neil Collings Profile

Dr. Neil Collings

Principal Research Engineer at Envisics Ltd

SPIE Involvement:

Author

Publications (37)

Proceedings Article | 21 November 2017 Open Access

MEMS deformable mirror for wavefront correction of large telescopes

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

Proceedings Volume 10569, 1056918 (2017) https://doi.org/10.1117/12.2307868

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

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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

Proceedings Volume 8828, 88281B (2013) https://doi.org/10.1117/12.2024037

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

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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

Proceedings Volume 8288, 82881I (2012) https://doi.org/10.1117/12.908091

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

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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

Proceedings Volume 8284, 82840S (2012) https://doi.org/10.1117/12.907281

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

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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

Proceedings Volume 8167, 81671F (2011) https://doi.org/10.1117/12.895161

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

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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, 074003, (July 2011) https://doi.org/10.1117/12.10.1117/1.3599871

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

Proceedings Volume 7775, 777504 (2010) https://doi.org/10.1117/12.858819

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

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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

Proceedings Volume 7618, 761815 (2010) https://doi.org/10.1117/12.849359

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

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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

Proceedings Volume 7632, 76321K (2009) https://doi.org/10.1117/12.852201

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

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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

Proceedings Volume 6654, 66540R (2007) https://doi.org/10.1117/12.733228

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

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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

Proceedings Volume 6654, 66540C (2007) https://doi.org/10.1117/12.736819

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

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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

Proceedings Volume 6332, 633205 (2006) https://doi.org/10.1117/12.675630

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

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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

Proceedings Volume 6332, 63320H (2006) https://doi.org/10.1117/12.680299

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

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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

Proceedings Volume 5625, (2005) https://doi.org/10.1117/12.571874

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

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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, 014003, (January 2005) https://doi.org/10.1117/12.10.1117/1.1828471

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

Proceedings Volume 5579, (2004) https://doi.org/10.1117/12.567791

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

Proceedings Volume 5518, (2004) https://doi.org/10.1117/12.555897

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

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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

Proceedings Volume 5464, (2004) https://doi.org/10.1117/12.548644

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

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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

Proceedings Volume 5453, (2004) https://doi.org/10.1117/12.545786

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

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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

Proceedings Volume 5213, (2004) https://doi.org/10.1117/12.509192

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

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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, (January 2004) https://doi.org/10.1117/12.10.1117/1.1624275

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, (July 2003) https://doi.org/10.1117/12.10.1117/1.1579705

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, (October 2002) https://doi.org/10.1117/12.10.1117/1.1499969

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

Proceedings Volume 4089, (2000) https://doi.org/10.1117/12.386874

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

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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

Proceedings Volume 3957, (2000) https://doi.org/10.1117/12.384439

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

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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

Proceedings Volume 3760, (1999) https://doi.org/10.1117/12.367575

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

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Proceedings Article | 2 June 1999 Open Access

Optical neural networks using liquid crystal devices

N. Collings

Proceedings Volume 10296, 102960F (1999) https://doi.org/10.1117/12.365912

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

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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

Proceedings Volume 3490, (1998) https://doi.org/10.1117/12.308844

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

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Proceedings Article | 22 May 1998 Paper

Progress in the construction of a multilayer optical neural network

Alireza Pourzand, Neil Collings

Proceedings Volume 3490, (1998) https://doi.org/10.1117/12.308846

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

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Proceedings Article | 22 May 1998 Paper

All-optical recurrent neural network

Christoph Berger, Neil Collings

Proceedings Volume 3490, (1998) https://doi.org/10.1117/12.308854

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

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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

Proceedings Volume 3402, (1998) https://doi.org/10.1117/12.304949

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

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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

Proceedings Volume 2800, (1996) https://doi.org/10.1117/12.240533

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

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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

Proceedings Volume 2565, (1995) https://doi.org/10.1117/12.217667

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

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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

Proceedings Volume 2430, (1994) https://doi.org/10.1117/12.195608

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

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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

Proceedings Volume 1806, (1993) https://doi.org/10.1117/12.147887

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

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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

Proceedings Volume 1807, (1993) https://doi.org/10.1117/12.147911

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

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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

Proceedings Volume 1505, (1991) https://doi.org/10.1117/12.47004

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

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