MEMS FPI-based smartphone hyperspectral imager

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

    15 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.",
    keywords = "ALD, MEMS Fabry-Perot interferometer, microspectrometers, Mobile hyperspectral imaging, MOEMS, Smartphone spectroscopy",
    author = "Anna Rissanen and Heikki Saari and Kari Rainio and Ingmar Stuns and Kai Viherkanto and Christer Holmlund and Ismo N{\"a}kki and Harri Ojanen",
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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 - Rissanen, Anna

    AU - Saari, Heikki

    AU - Rainio, Kari

    AU - Stuns, Ingmar

    AU - Viherkanto, Kai

    AU - Holmlund, Christer

    AU - Näkki, Ismo

    AU - Ojanen, Harri

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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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    KW - Smartphone spectroscopy

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    BT - Next-Generation Spectroscopic Technologies IX

    PB - International Society for Optics and Photonics SPIE

    ER -

    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