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 language | English |
|---|---|
| Title of host publication | Next-Generation Spectroscopic Technologies IX |
| Publisher | International Society for Optics and Photonics SPIE |
| Volume | 9855 |
| ISBN (Electronic) | 9781510600966 |
| DOIs | |
| Publication status | Published - 1 Jan 2016 |
| MoE publication type | A4 Article in a conference publication |
| Event | Next-Generation Spectroscopic Technologies IX - Baltimore, United States Duration: 18 Apr 2016 → 19 Apr 2016 |
Conference
| Conference | Next-Generation Spectroscopic Technologies IX |
|---|---|
| Country | United States |
| City | Baltimore |
| Period | 18/04/16 → 19/04/16 |
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Keywords
- ALD
- MEMS Fabry-Perot interferometer
- microspectrometers
- Mobile hyperspectral imaging
- MOEMS
- Smartphone spectroscopy
Cite this
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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 proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
T1 - MEMS FPI-based smartphone hyperspectral imager
AU - Rissanen, Anna
AU - Saari, Heikki
AU - Rainio, Kari
AU - Stuns, Ingmar
AU - Viherkanto, Kai
AU - Holmlund, Christer
AU - Näkki, Ismo
AU - Ojanen, Harri
PY - 2016/1/1
Y1 - 2016/1/1
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.
KW - ALD
KW - MEMS Fabry-Perot interferometer
KW - microspectrometers
KW - Mobile hyperspectral imaging
KW - MOEMS
KW - Smartphone spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84976527630&partnerID=8YFLogxK
U2 - 10.1117/12.2229575
DO - 10.1117/12.2229575
M3 - Conference article in proceedings
VL - 9855
BT - Next-Generation Spectroscopic Technologies IX
PB - International Society for Optics and Photonics SPIE
ER -