Kevin C. Liddiard
Consultant (retired)
SPIE Involvement:
Conference Program Committee | Author
Area of Expertise:
Optical sensing , Infrared detectors , MEMS , Infrared detection , Microbolometers
Websites:
Profile Summary

Kevin Liddiard was educated at Trinity Grammar School, Sydney, and is a graduate in physics from the University of Adelaide. His professional career spans 40 years research and development at the Defence Science and Technology Organisation (DSTO), Edinburgh, South Australia, and since 1996 continuing through a consultancy business, Electro-optic Sensor Design, specialising in the modelling, design, development and performance of optical sensors, particularly microbolometer IR focal plane detector arrays.

During his career at DSTO he carried out pioneering research and development on infrared and low light level target signatures, image intensifier technology and night vision systems. He conducted extensive research on electro-optic sensing, including cadmium sulphide, lead chalcogenide, and cadmium mercury telluride IR detectors, and millimetre wave sensors. During a period co-opted to underwater science, he conducted the initial design studies on the directional compass and hydrophones for the BARRA sonobuoy.

He is, however, best known for the invention of the MEMS silicon microbolometer, first patented in 1980, and for development of imaging and non-imaging uncooled IR sensors. He is the inventor of the active microbolometer, which functions as a thin film transistor, and the recently patented mosaic pixel microbolometer IR focal plane array.

He has extensive experience working with defence forces, industry and academic institutions, and has been involved through collaborative forums or consultancy contracts with companies and agencies in the UK, USA, Canada, Sweden, Singapore and China. His current interest is in the development of next generation passive infrared (PIR) sensors for the high volume industry and consumer markets.

Kevin Liddiard is accredited as a Chartered Physicist with the Institute of Physics, London, and is a Senior Member of SPIE, and Member of OSA, MRS, Australian Institute of Physics, and the Australian Optical and Vacuum Societies.
Publications (35)

Proceedings Article | 30 May 2022 Presentation
Proceedings Volume 12107, 121071D (2022) https://doi.org/10.1117/12.2627763
KEYWORDS: Microbolometers, Microelectromechanical systems, Bolometers, Silicon, Optoelectronics, Manufacturing, Infrared signatures, Infrared sensors, Gold, Defense and security

Proceedings Article | 18 June 2013 Paper
Proceedings Volume 8704, 87043F (2013) https://doi.org/10.1117/12.2018593
KEYWORDS: Microbolometers, Staring arrays, Amorphous silicon, Thermography, Sensors, Infrared sensors, Cameras, Infrared cameras, Resistance, Bolometers

Proceedings Article | 21 May 2011 Paper
Proceedings Volume 8012, 80123O (2011) https://doi.org/10.1117/12.886676
KEYWORDS: Sensors, Microbolometers, Staring arrays, Infrared sensors, Resistance, Bolometers, Sensor technology, Flame detectors, Capacitance, Electronics

Proceedings Article | 5 November 2010 Paper
Proceedings Volume 7854, 78540W (2010) https://doi.org/10.1117/12.876417
KEYWORDS: Sensors, Microbolometers, Infrared sensors, Thermography, Staring arrays, Silicon, Resistance, Bolometers, Flame detectors, Infrared detectors

Proceedings Article | 4 May 2010 Paper
Proceedings Volume 7660, 766010 (2010) https://doi.org/10.1117/12.851136
KEYWORDS: Sensors, Microbolometers, Bolometers, Staring arrays, Infrared sensors, Silicon, Optical sensors, Nitrogen, Sensor performance, Packaging

Showing 5 of 35 publications
Conference Committee Involvement (17)
Infrared Technology and Applications L
21 April 2024 | National Harbor, Maryland, United States
Infrared Technology and Applications XLIX
30 April 2023 | Orlando, Florida, United States
Infrared Technology and Applications XLVIII
3 April 2022 | Orlando, Florida, United States
Infrared Technology and Applications XLVII
12 April 2021 | Online Only, Florida, United States
Infrared Technology and Applications XLVI
27 April 2020 | Online Only, California, United States
Showing 5 of 17 Conference Committees
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