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Takeo Fujii
at Hamamatsu Photonics KK
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Publications (3)
SPIE Journal Paper | 25 October 2024 Open Access
Accuracy enhancement of metabolic index-based blood glucose estimation with a screening process for low-quality data
Tomoya Nakazawa, Keiji Morishita, Anna Ienaka, Takeo Fujii, Masaki Ito, Fumie Matsushita
JBO, Vol. 29, Issue 10, 107001, (October 2024) https://doi.org/10.1117/12.10.1117/1.JBO.29.10.107001
KEYWORDS: Signal to noise ratio, Glucose, Near infrared spectroscopy, Blood, Prototyping, Error analysis, Education and training, Sensors, Data acquisition, Background noise
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SPIE Journal Paper | 5 March 2024 Open Access
Non-invasive blood glucose estimation method based on the phase delay between oxy- and deoxyhemoglobin using visible and near-infrared spectroscopy
Tomoya Nakazawa, Rui Sekine, Masato Kitabayashi, Yu Hashimoto, Anna Ienaka, Keiji Morishita, Takeo Fujii, Masaki Ito, Fumie Matsushita
JBO, Vol. 29, Issue 03, 037001, (March 2024) https://doi.org/10.1117/12.10.1117/1.JBO.29.3.037001
KEYWORDS: Glucose, Blood, Prototyping, Near infrared, Sensors, Light sources, Oxygen, Cameras, Near infrared spectroscopy, Visible radiation
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Proceedings Article | 25 February 2020 Presentation + Paper
Fast-responding mid-IR light emitter using suspended multilayer graphene
Proceedings Volume 11302, 1130212 (2020) https://doi.org/10.1117/12.2545039
KEYWORDS: Graphene, Mid-IR, Light sources, Lamps, Multilayers, Tungsten, Light, Black bodies, Nickel, Raman spectroscopy
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