Dr. John B. Mitchell Profile

Dr. John B. Mitchell

Optical Designer at Trulife Optics Ltd

SPIE Involvement:

Author

Publications (7)

SPIE Journal Paper | 20 October 2020 Open Access

Development of a lightweight camera for high altitude platform systems

Paul C. Rees, Ian Baker, David Thomson, Dean Catterall, Martin Coleman, Martyn Jones, John Mitchell

OE, Vol. 59, Issue 10, 105104, (October 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.10.105104

KEYWORDS: Mirrors, Imaging systems, Cameras, Sensors, Wavefronts, Optical engineering, Temperature metrology, Titanium, Interfaces, Aluminum

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Proceedings Article | 21 June 2019 Presentation + Paper

Full-field, high-frequency, heterodyne interferometry for dynamic metrology based on phase detection using a modified time-of-flight camera

John Mitchell, Gareth Roberts, Paul Rees

Proceedings Volume 11056, 110560U (2019) https://doi.org/10.1117/12.2525827

KEYWORDS: Interferometers, Heterodyning, Sensors, Cameras, Time of flight cameras, Signal detection, Interferometry, Mirrors, Modulation, Beam splitters

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Proceedings Article | 27 August 2015 Paper

The use of diffractive imitator optics as calibration artefacts

Paul Rees, John Mitchell, Andy Volkov, Jean-Michel Asfour, Frank Weidner, Alexander Poleshchuk, Ruslan Nasyrov

Proceedings Volume 9575, 957516 (2015) https://doi.org/10.1117/12.2189809

KEYWORDS: Optical testing, Calibration, Wavefronts, Computer generated holography, Optical fabrication, Optics manufacturing, Optical alignment, Optical spheres, Prototyping, Optical calibration

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Proceedings Article | 7 September 2013 Paper

Fast manufacturing of E-ELT mirror segments using CNC polishing

C. Gray, I. Baker, G. Davies, R. Evans, N. Field, T. Fox-Leonard, W. Messelink, J. Mitchell, P. Rees, S. Waine, D. Walker, G. Yu

Proceedings Volume 8838, 88380K (2013) https://doi.org/10.1117/12.2023475

KEYWORDS: Polishing, Metrology, Manufacturing, Aspheric lenses, Surface finishing, Prototyping, Mirrors, Optical testing, Optics manufacturing, Telescopes

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Proceedings Article | 13 September 2012 Paper

Edge-control and surface-smoothness in sub-aperture polishing of mirror segments

D. Walker, A. Beaucamp, R. Evans, T. Fox-Leonard, N. Fairhurst, C. Gray, S. Hamidi, H. Li, W. Messelink, J. Mitchell, P. Rees, G. Yu

Proceedings Volume 8450, 84502A (2012) https://doi.org/10.1117/12.926183

KEYWORDS: Polishing, Aspheric lenses, Surface finishing, Mirrors, Telescopes, Spherical lenses, Space telescopes, Spatial frequencies, Prototyping, Optics manufacturing

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Proceedings Article | 27 September 2011 Paper

Non-contact profilometry of E-ELT segments at OpTIC Glyndwr

Carolyn Atkins, John Mitchell, Paul Rees

Proceedings Volume 8126, 81260M (2011) https://doi.org/10.1117/12.893690

KEYWORDS: Prototyping, Nano opto mechanical systems, Polishing, Optical testing, Polishing equipment, Optics manufacturing, Autocollimators, Spherical lenses, Surface finishing, Algorithm development

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Proceedings Article | 27 September 2011 Paper

Technologies for producing segments for extremely large telescopes

D. Walker, C. Atkins, I. Baker, R. Evans, S. Hamidi, P. Harris, H. Li, W. Messelink, J. Mitchell, M. Parry-Jones, P. Rees, G. Yu

Proceedings Volume 8126, 812604 (2011) https://doi.org/10.1117/12.893360

KEYWORDS: Polishing, Aspheric lenses, Manufacturing, Metrology, Profilometers, Large telescopes, Prototyping, Polishing equipment, Mirrors, Optical testing

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Showing 5 of 7 publications

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