Dr. Paul G. Coombs Profile

Dr. Paul G. Coombs

Technical Manager at Viavi Solutions Inc

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Publications (4)

Proceedings Article | 9 February 2006 Paper

Advanced verification methods for OVI security ink

Paul Coombs, Shaun McCaffery, Tom Markantes

Proceedings Volume 6075, 60750I (2006) https://doi.org/10.1117/12.652451

KEYWORDS: Information security, Sensors, Computer security, Light sources, Reflectivity, Data processing, Light emitting diodes, RGB color model, Optical components, Forensic science

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Proceedings Article | 3 June 2004 Paper

Integration of contrasting technologies into advanced optical security devices

Paul Coombs, Alberto Argoitia, Vladimir Raksha, Roger Phillips

Proceedings Volume 5310, (2004) https://doi.org/10.1117/12.530039

KEYWORDS: Magnetism, Thin films, Reflectors, Reflectivity, Diffraction gratings, Diffraction, Thin film devices, Particles, Aluminum, Silver

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Proceedings Article | 19 April 2002 Paper

Overt and covert verification via magnetic optical security devices

Paul Coombs, Vladimir Raksha, Tom Markantes

Proceedings Volume 4677, (2002) https://doi.org/10.1117/12.462709

KEYWORDS: Magnetism, Reflectors, Information security, Cobalt, Metals, Iron, Reflectivity, Optics manufacturing, Thin films, Nickel

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Proceedings Article | 7 April 2000 Paper

Improved verification methods for OVI security ink

Paul Coombs, Tom Markantes

Proceedings Volume 3973, (2000) https://doi.org/10.1117/12.382200

KEYWORDS: Computer security, Light sources, Reflectivity, Mirrors, Patents, Interference filters, Optical components, Inspection, Printing, Magnetism

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