Measurement of the mid-infrared Fourier spectroscopic imaging of whole human face by portable apparatus (size: 50*50 mm, weight: 200 g)
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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便携式仪器测量人脸中红外傅立叶光谱成像（尺寸：50*50 mm，重量：200 g）
DOI：
10.1117/12.2071422
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
I. Ishimaru
中科院分区：
文献类型：
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作者：
W. Qi;Yo Suzuki;Masaru Fujiwara;Tsubasa Saito;Satoru Suzuki;P. Abeygunawardhana;Kenji Wada;A. Nishiyama;I. Ishimaru
在日常生活空间中，可以通过所提出的成像型二维傅立叶光谱法来实现诸如皮脂的生物物质分布的测量。该方法对机械振动具有较强的鲁棒性。因此，光谱仪（尺寸：50*50mm，重量：200g）可以在没有防振机构的情况下生产。此外，移相器是光谱仪的核心部分，它是由廉价的双压电晶片型驱动器，这是依赖于压电陶瓷的振动控制在所提出的方法。从直线度和中红外位置精度的评价结果来看，该驱动器适合作为移相器的驱动器。众所周知，傅里叶光谱具有很高的光利用效率。因此，低价格的微测辐射热计可以用作成像传感器。因此，可以生产出价格低廉（1万美元）、结构紧凑、便携性强的光谱仪。此外，在短波长范围内对位置精度的要求更高，我们已经提出了相移校正方法。本文利用中红外波段的CO_2激光光谱结果，讨论了便携式光谱仪的高性能评价。然后，对相移校正方法进行了说明。最后，我们论证了在没有主动照明的情况下，对整个人脸进行中红外成像的可行性。
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.