MEMS FPI-based smartphone hyperspectral imager

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

13 Citations (Scopus)

Abstract

This paper demonstrates a mobile phone-compatible hyperspectral imager based on a tunable MEMS Fabry-Perot interferometer. The realized iPhone 5s hyperspectral imager (HSI) demonstrator utilizes MEMS FPI tunable filter for visible-range, which consist of atomic layer deposited (ALD) Al2O3/TiO2-thin film Bragg reflectors. Characterization results for the mobile phone hyperspectral imager utilizing MEMS FPI chip optimized for 500 nm is presented; the operation range is λ = 450-550 nm with FWHM between 8-15 nm. Also a configuration of two cascaded FPIs (λ = 500 nm and λ = 650 nm) combined with an RGB colour camera is presented. With this tandem configuration, the overall wavelength tuning range of MEMS hyperspectral imagers can be extended to cover a larger range than with a single FPI chip. The potential applications of mobile hyperspectral imagers in the vis-NIR range include authentication, counterfeit detection and potential health/wellness and food sensing applications.

Original languageEnglish
Title of host publicationNext-Generation Spectroscopic Technologies IX
PublisherInternational Society for Optics and Photonics SPIE
Volume9855
ISBN (Electronic)9781510600966
DOIs
Publication statusPublished - 1 Jan 2016
MoE publication typeA4 Article in a conference publication
EventNext-Generation Spectroscopic Technologies IX - Baltimore, United States
Duration: 18 Apr 201619 Apr 2016

Conference

ConferenceNext-Generation Spectroscopic Technologies IX
CountryUnited States
CityBaltimore
Period18/04/1619/04/16

Fingerprint

Smartphones
Imager
Micro-electro-mechanical Systems
Image sensors
microelectromechanical systems
MEMS
Range of data
Mobile Phone
Mobile phones
chips
Chip
tunable filters
Fabry-Perot interferometers
Bragg reflectors
Fabry-Perot Interferometer
Tunable Filter
configurations
food
Configuration
TiO2

Keywords

  • ALD
  • MEMS Fabry-Perot interferometer
  • microspectrometers
  • Mobile hyperspectral imaging
  • MOEMS
  • Smartphone spectroscopy

Cite this

Rissanen, A., Saari, H., Rainio, K., Stuns, I., Viherkanto, K., Holmlund, C., ... Ojanen, H. (2016). MEMS FPI-based smartphone hyperspectral imager. In Next-Generation Spectroscopic Technologies IX (Vol. 9855). [985507] International Society for Optics and Photonics SPIE. https://doi.org/10.1117/12.2229575
Rissanen, Anna ; Saari, Heikki ; Rainio, Kari ; Stuns, Ingmar ; Viherkanto, Kai ; Holmlund, Christer ; Näkki, Ismo ; Ojanen, Harri. / MEMS FPI-based smartphone hyperspectral imager. Next-Generation Spectroscopic Technologies IX. Vol. 9855 International Society for Optics and Photonics SPIE, 2016.
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title = "MEMS FPI-based smartphone hyperspectral imager",
abstract = "This paper demonstrates a mobile phone-compatible hyperspectral imager based on a tunable MEMS Fabry-Perot interferometer. The realized iPhone 5s hyperspectral imager (HSI) demonstrator utilizes MEMS FPI tunable filter for visible-range, which consist of atomic layer deposited (ALD) Al2O3/TiO2-thin film Bragg reflectors. Characterization results for the mobile phone hyperspectral imager utilizing MEMS FPI chip optimized for 500 nm is presented; the operation range is λ = 450-550 nm with FWHM between 8-15 nm. Also a configuration of two cascaded FPIs (λ = 500 nm and λ = 650 nm) combined with an RGB colour camera is presented. With this tandem configuration, the overall wavelength tuning range of MEMS hyperspectral imagers can be extended to cover a larger range than with a single FPI chip. The potential applications of mobile hyperspectral imagers in the vis-NIR range include authentication, counterfeit detection and potential health/wellness and food sensing applications.",
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Rissanen, A, Saari, H, Rainio, K, Stuns, I, Viherkanto, K, Holmlund, C, Näkki, I & Ojanen, H 2016, MEMS FPI-based smartphone hyperspectral imager. in Next-Generation Spectroscopic Technologies IX. vol. 9855, 985507, International Society for Optics and Photonics SPIE, Next-Generation Spectroscopic Technologies IX, Baltimore, United States, 18/04/16. https://doi.org/10.1117/12.2229575

MEMS FPI-based smartphone hyperspectral imager. / Rissanen, Anna; Saari, Heikki; Rainio, Kari; Stuns, Ingmar; Viherkanto, Kai; Holmlund, Christer; Näkki, Ismo; Ojanen, Harri.

Next-Generation Spectroscopic Technologies IX. Vol. 9855 International Society for Optics and Photonics SPIE, 2016. 985507.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AU - Saari, Heikki

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AU - Stuns, Ingmar

AU - Viherkanto, Kai

AU - Holmlund, Christer

AU - Näkki, Ismo

AU - Ojanen, Harri

PY - 2016/1/1

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N2 - This paper demonstrates a mobile phone-compatible hyperspectral imager based on a tunable MEMS Fabry-Perot interferometer. The realized iPhone 5s hyperspectral imager (HSI) demonstrator utilizes MEMS FPI tunable filter for visible-range, which consist of atomic layer deposited (ALD) Al2O3/TiO2-thin film Bragg reflectors. Characterization results for the mobile phone hyperspectral imager utilizing MEMS FPI chip optimized for 500 nm is presented; the operation range is λ = 450-550 nm with FWHM between 8-15 nm. Also a configuration of two cascaded FPIs (λ = 500 nm and λ = 650 nm) combined with an RGB colour camera is presented. With this tandem configuration, the overall wavelength tuning range of MEMS hyperspectral imagers can be extended to cover a larger range than with a single FPI chip. The potential applications of mobile hyperspectral imagers in the vis-NIR range include authentication, counterfeit detection and potential health/wellness and food sensing applications.

AB - This paper demonstrates a mobile phone-compatible hyperspectral imager based on a tunable MEMS Fabry-Perot interferometer. The realized iPhone 5s hyperspectral imager (HSI) demonstrator utilizes MEMS FPI tunable filter for visible-range, which consist of atomic layer deposited (ALD) Al2O3/TiO2-thin film Bragg reflectors. Characterization results for the mobile phone hyperspectral imager utilizing MEMS FPI chip optimized for 500 nm is presented; the operation range is λ = 450-550 nm with FWHM between 8-15 nm. Also a configuration of two cascaded FPIs (λ = 500 nm and λ = 650 nm) combined with an RGB colour camera is presented. With this tandem configuration, the overall wavelength tuning range of MEMS hyperspectral imagers can be extended to cover a larger range than with a single FPI chip. The potential applications of mobile hyperspectral imagers in the vis-NIR range include authentication, counterfeit detection and potential health/wellness and food sensing applications.

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Rissanen A, Saari H, Rainio K, Stuns I, Viherkanto K, Holmlund C et al. MEMS FPI-based smartphone hyperspectral imager. In Next-Generation Spectroscopic Technologies IX. Vol. 9855. International Society for Optics and Photonics SPIE. 2016. 985507 https://doi.org/10.1117/12.2229575