Mr. Thibault Behaghel Profile

Thibault Behaghel

at Lab d'Astrophysique de Marseille

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Author

Publications (11)

Proceedings Article | 17 May 2022 Poster + Paper

Monocentric cameras design for 3D scenes capturing and projection

Thibault Behaghel, Eduard Muslimov

Proceedings Volume 12138, 121380U (2022) https://doi.org/10.1117/12.2622339

KEYWORDS: Spherical lenses, Cameras, Distortion, Eye, Image quality, Sensors, Optical spheres, Lenses, Projection systems, Lens design

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Proceedings Article | 13 December 2020 Poster + Paper

A metrological characterization of the SPEED test-bed PIAACMC components

K. Barjot, P. Martinez, M. Beaulieu, C. Gouvret, A. Marcotto, O. Guyon, M. Belhadi, A. Caillat, T. Behaghel, J. M. Le Duigou, K. Dohlen, A. Vigan

Proceedings Volume 11451, 114513B (2020) https://doi.org/10.1117/12.2557112

KEYWORDS: Metrology, Mirrors, Coronagraphy, Apodization, Optics manufacturing, Image segmentation, Exoplanetary science, High angular resolution imaging, Spatial resolution, Large telescopes

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Proceedings Article | 14 April 2020 Presentation + Paper

Imaging multiple cortical areas with high spatio-temporal resolution using innovative wide-field imaging system

Manon Bourbousson, Isabelle Racicot, Eduard Muslimov, Thibault Behaghel, Kévin Blaize, Audrey Bourdet, Sandrine Chemla, Emmanuel Hugot, Wilfried Jahn, Sébastien Roux, Ivo Vanzetta, Pascal Weber, Jean-François Sauvage, Frédéric Chavane, Marc Ferrari

Proceedings Volume 11360, 1136002 (2020) https://doi.org/10.1117/12.2556793

KEYWORDS: Sensors, Imaging systems, Brain, Neuroimaging, Light emitting diodes, Image resolution, Optical design, Vignetting, Image quality, Cameras

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Proceedings Article | 1 April 2020 Presentation

Curved sensors for compact and high-performance imaging systems (Conference Presentation)

Kelly Joaquina, Emmanuel Hugot, Thibault Behaghel, Simona Lombardo, Eduard Muslimov

Proceedings Volume 11353, 1135310 (2020) https://doi.org/10.1117/12.2557782

KEYWORDS: Sensors, Imaging systems, Lenses, Image quality, Vignetting, Distortion, CMOS sensors, Image sensors, Optical design, Optical aberrations

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Curved sensors are a disruptive technology which allow improvement of the image quality and substantial simplification of optical designs. Both bring to the reduction of the volume and mass of the instruments, while improving their performance. The field of curvature is an optical aberration, present in every single optical system, describing the fact that the light going through optics produces an image on a portion of a sphere. The impact of this aberration is seen mostly on the edges of an image by the presence of vignetting and distortion. Current solutions are applied to correct the images, but they imply a growing complexity of the instruments and the increase of their volume. Curved detectors correct this optical aberration directly at the focal surface. Our recent research has demonstrated that curved detectors allow to remove many lenses and release constraints in optical systems, simultaneously making them more compact without performance impairments. The CNRS-LAM has developed a nondestructive, high quality curving process. A full electro-optical characterization performed at LAM on prototypes demonstrates that there is no significant difference among curved and flat sensors. The study and achievement of the association of a wide-angle lens with a curved sensor have proven that it is possible to reduce by a factor of two the number of lenses in the optical system. Moreover, a significant improvement of the sharpness can be noticed, just like the fact that there is no more distortion or vignetting, all until the edges of the image. Curved sensors bring significant improvement of the image quality in trans-disciplinary applications. The team is currently developing new optical concept including a curved focal surface for projects going from bio medical application to space imaging. In this talk I will present our work and results in the frame of freeform CMOS development, optical concept for a wide field imager for an ESA Earth’s aurora monitoring mission and discuss the impact of curved sensors on imaging systems.

Proceedings Article | 12 July 2019 Open Access

Curved sensors: experimental performance of CMOS prototypes and wide field related imagers

Emmanuel Hugot, Simona Lombardo, Thibault Behaghel, Bertrand Chambion, Wilfried Jahn, Christophe Gaschet, Sébastien Hugot, Jean Luc Gach, Marc Ferrari, David Henry

Proceedings Volume 11180, 111802Y (2019) https://doi.org/10.1117/12.2536025

KEYWORDS: Sensors, CMOS sensors, Prototyping, Imaging systems, Optical design, Image sensors, Cameras, Sensor performance, Objectives, Sensor technology

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Proceedings Article | 31 July 2018 Paper

Curved CMOS sensor: characterization of the first fully functional prototype

Simona Lombardo, Thibault Behaghel, Bertrand Chambion, Wilfried Jahn, Emmanuel Hugot, Eduard Muslimov, Melanie Roulet, Marc Ferrari, Christophe Gaschet, David Henry, Stéphane Caplet

Proceedings Volume 10679, 1067910 (2018) https://doi.org/10.1117/12.2307170

KEYWORDS: Sensors, CMOS sensors, Prototyping, Electrons, Temperature metrology, Imaging systems, Detector development, Error analysis, Interference (communication), Optical design

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Proceedings Article | 20 July 2018 Paper

Curved detectors developments and characterization: application to astronomical instruments

Simona Lombardo, Thibault Behaghel, Bertrand Chambion, Wilfried Jahn, Emmanuel Hugot, Eduard Muslimov, Melanie Roulet, Marc Ferrari, Christophe Gaschet, Stéphane Caplet, David Henry

Proceedings Volume 10709, 107090U (2018) https://doi.org/10.1117/12.2312654

KEYWORDS: Sensors, CMOS sensors, Astronomy, Image sensors, Detector development, Electrons, Temperature metrology, Imaging systems, Prototyping, Error analysis

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Proceedings Article | 5 June 2018 Paper

Advanced optical designs of curved detectors-based two-mirrors unobsured telescopes

Eduard Muslimov, Emmanuel Hugot, Simona Lombardo, Melanie Roulet, Thibault Behaghel, Marc Ferrari, Wilfried Jahn

Proceedings Volume 10690, 1069025 (2018) https://doi.org/10.1117/12.2311885

KEYWORDS: Sensors, Telescopes, Optical design, Optical instrument design, Image quality, Mirrors, Telescope design, Shape analysis, Monochromatic aberrations, Astronomical detectors, CCD image sensors

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Proceedings Article | 24 May 2018 Presentation + Paper

Curved detectors for wide field imaging systems: impact on tolerance analysis

Eduard Muslimov, Emmanuel Hugot, Simona Lombardo, Melanie Roulet, Thibault Behaghel, Marc Ferrari, Wilfried Jahn, Christophe Gaschet, Bertrand Chambion, David Henry

Proceedings Volume 10679, 106790W (2018) https://doi.org/10.1117/12.2305923

KEYWORDS: Sensors, Tolerancing, Image quality, Telescopes, Optical design, Manufacturing, Imaging systems, Lens design, Image quality standards

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Proceedings Article | 22 February 2018 Presentation + Paper

Curved sensors for compact high-resolution wide-field designs: prototype demonstration and optical characterization

Bertrand Chambion, Christophe Gaschet, Thibault Behaghel, Aurélie Vandeneynde, Stéphane Caplet, Stéphane Gétin, David Henry, Emmanuel Hugot, Wilfried Jahn, Simona Lombardo, Marc Ferrari

Proceedings Volume 10539, 1053913 (2018) https://doi.org/10.1117/12.2291472

KEYWORDS: Sensors, Prototyping, Silicon, Lenses, CMOS sensors, Electro optics, Monochromatic aberrations, Spherical lenses, Electro optical sensors, Optical design

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Proceedings Article | 24 August 2017 Presentation + Paper

Curved sensors for compact high-resolution wide field designs

Christophe Gaschet, Bertrand Chambion, Stéphane Gétin, Gaid Moulin, Aurélie Vandeneynde, Stéphane Caplet, David Henry, Emmanuel Hugot, Wilfried Jahn, Thibault Behaghel, Simona Lombardo, Mélanie Roulet, Eduard Muslimov, Marc Ferrari

Proceedings Volume 10376, 1037603 (2017) https://doi.org/10.1117/12.2272451

KEYWORDS: Sensors, Monochromatic aberrations, Optical design, Electro optics, Biomedical optics, Electronics, Optoelectronics, Lenses, Image sensors, Aspheric lenses

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Showing 5 of 11 publications

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