Experimental study on the influence of the contact pressure to transmittance and reflectance spectra by near infrared spectroscopy

Jingying Jiang; Si Li; Tianpei Wang; Lin Li; Jiajia Liu; Kexin Xu

doi:10.1117/12.2251355

3 March 2017 Experimental study on the influence of the contact pressure to transmittance and reflectance spectra by near infrared spectroscopy

Jingying Jiang, Si Li, Tianpei Wang, Lin Li, Jiajia Liu, Kexin Xu

Author Affiliations +

Proceedings Volume 10063, Dynamics and Fluctuations in Biomedical Photonics XIV; 100631E (2017) https://doi.org/10.1117/12.2251355
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

Near Infrared Spectroscopy (NIRS) technology has been recognized as one of the most promising non-invasive blood glucose measurement methods due to its convenience, high efficiency, noninvasiveness, and real-time monitoring. We build a system to measure transmittance and reflectance within NIR range simultaneously. And contact measuring method has been performed in order to reduce the influence of specular reflectance of the measured skin tissue. However, in this way, the optical probe could press the skin tissue and make it distorted, which might make the internal structure and the constituent distribution of tissue changed and further the tissue optical parameter changed. This could eventually change the distribution of transmittance spectra and reflectance spectra. In this talk, we collect the transmittance spectra and the diffused reflectance spectra of human earlobe within the wavelength of 900-1700nm under the different contact pressures. The results show that the diffused reflectance spectra decrease and the diffused transmittance spectra increase with the increase of the contact pressure between the probe and the earlobe. In order to improve the precision and stability of NIRS, the contact position of the deformation of 0.75mm is determined to be an optimal contact state measurement position.

Citation Download Citation

Jingying Jiang, Si Li, Tianpei Wang, Lin Li, Jiajia Liu, and Kexin Xu "Experimental study on the influence of the contact pressure to transmittance and reflectance spectra by near infrared spectroscopy", Proc. SPIE 10063, Dynamics and Fluctuations in Biomedical Photonics XIV, 100631E (3 March 2017); https://doi.org/10.1117/12.2251355

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available