Sensitivity improvement of one-shot Fourier spectroscopic imager for realization of noninvasive blood glucose sensors in smartphones
Sensitivity improvement of one-shot Fourier spectroscopic imager for realization of noninvasive blood glucose sensors in smartphones
复制标题
提高一次性傅里叶光谱成像仪的灵敏度,以实现智能手机中的无创血糖传感器
DOI:
10.1117/1.oe.55.11.110506
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Natsumi Kawashima
中科院分区:
文献类型:
--
作者:
Natsumi Kawashima;Ichiro Ishimaru;Ichiro Ishimaru;Ichiro ISHIMARU;Natsumi Kawashima
The use of the wide-field-stop and beam-expansion method for sensitivity enhancement of one-shot Fourier spectroscopy is proposed to realize health care sensors installed in smartphones for daily monitoring. When measuring the spectral components of human bodies noninvasively, diffuse reflected light from biological membranes is too weak for detection using conventional hyperspectral cameras. One-shot Fourier spectroscopy is a spatial phase-shift-type interferometer that can determine the one-dimensional spectral characteristics from a single frame. However, this method has low sensitivity, so that only the spectral characteristics of light sources with direct illumination can be obtained, because a single slit is used as a field stop. The sensitivity of the proposed spectroscopic method is improved by using the wide-field-stop and beam-expansion method. The use of a wider field stop slit width increases the detected light intensity; however, this simultaneously narrows the diffraction angle. The narrower collimated objective beam diameter degrades the visibility of interferograms. Therefore, a plane-concave cylindrical lens between the objective plane and the single slit is introduced to expand the beam diameter. The resulting sensitivity improvement achieved when using the wide-field-stop and beam-expansion method allows the spectral characteristics of hemoglobin to be obtained noninvasively from a human palm using a midget lamp.
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DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Natsumi KAWASHIMA;Satsuki HOSONO;Ichiro ISHIMARU
通讯作者:
Ichiro ISHIMARU
影响因子:
3.5
作者:
Larin, KV;Motamedi, M;Esenaliev, RO
通讯作者:
Esenaliev, RO
影响因子:
3.8
作者:
Y. Yasuno;S. Makita;T. Endo;G. Aoki;Hiroshi Sumimura;M. Itoh;T. Yatagai
通讯作者:
Y. Yasuno;S. Makita;T. Endo;G. Aoki;Hiroshi Sumimura;M. Itoh;T. Yatagai
DOI:
10.1117/12.2038836
发表时间:
2014
期刊:
Biomedical optics
影响因子:
--
作者:
Akane Ishida;Shun Sato;Sho Nakada;Satoru Suzuki;P. Abeygunawardhana;Kenji Wada;A. Nishiyama;I. Ishimaru
通讯作者:
I. Ishimaru
影响因子:
1.9
作者:
Qi, Wei;Suzuki, Yo;Ishimaru, Ichiro
通讯作者:
Ishimaru, Ichiro