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Proceedings Paper

Measurement of the mid-infrared Fourier spectroscopic imaging of whole human face by portable apparatus (size: 50*50 mm, weight: 200 g)
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Paper Abstract

In the daily living space, measurement of the biological-substance distributions such as sebum can be realized by the proposed method of imaging-type 2-dimensional Fourier spectroscopy. This method has the strong robustness for mechanical vibrations. So, the spectrometer (size: 50*50mm, weight: 200g) can be produced without anti-vibration mechanism. Moreover, the phase shifter is a core part of the spectrometer, and it is constructed by the low-price bimorph type actuator which is depending on the vibration control of the piezoceramic in proposed method. It is appropriate as the actuator of the phase shifter from the evaluation results of the actuator straightness and position accuracy in the midinfrared region. As we know, the Fourier spectroscopy has a high light utilization efficiency. Therefore, the low price microbolometer can be used as the imaging sensor. So, the low-price (10,000 U.S. dollars), compact and high portability spectrometer can be produced. Furthermore, the much higher position accuracy in the short wavelength region is requested as we know, the phase shift correction method has been proposed. In this paper, high performance evaluations of the portable spectroscopy apparatus have been discussed by using the CO2 laser spectroscopy results in the midinfrared region. Then, the phase shift correction method was explained. At the end, we demonstrated the feasibility of the mid-infrared imaging of whole human faces without active illuminations.

Paper Details

Date Published: 20 November 2014
PDF: 6 pages
Proc. SPIE 9268, Optics in Health Care and Biomedical Optics VI, 92681V (20 November 2014); doi: 10.1117/12.2071422
Show Author Affiliations
Wei Qi, Kagawa Univ. (Japan)
Yo Suzuki, Kagawa Univ. (Japan)
Masaru Fujiwara, Kagawa Univ. (Japan)
Tsubasa Saito, Kagawa Univ. (Japan)
Satoru Suzuki, Kagawa Univ. (Japan)
Pradeep Kumara Abeygunawardhana, Kagawa Univ. (Japan)
Kenji Wada, Kagawa Univ. (Japan)
Akira Nishiyama, Kagawa Univ. (Japan)
Ichiro Ishimaru, Kagawa Univ. (Japan)

Published in SPIE Proceedings Vol. 9268:
Optics in Health Care and Biomedical Optics VI
Qingming Luo; Xingde Li; Ying Gu; Yuguo Tang, Editor(s)

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