Mid-infrared (longwave infrared) passive spectroscopic imaging with an uncooled microbolometer array sensor
Mid-infrared (longwave infrared) passive spectroscopic imaging with an uncooled microbolometer array sensor
复制标题
使用非制冷微测辐射热计阵列传感器进行中红外（长波红外）被动光谱成像
DOI：
10.1117/12.2635375
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Ichiro Ishimaru
中科院分区：
文献类型：
--
作者：
Yusuke Morimoto;Shiori Tahara;So Yamashita;Daichi Anabuki;Tomoya Kitazaki;Hiroko Shimizu;Akira Nishiyama M.D;Kenji Wada;Ichiro Ishimaru
我们的目标是通过被动中红外光谱使用手掌大小的成像二维傅立叶光谱仪测量体内的葡萄糖浓度。中红外区域（波长约为10 µ m）的辐射从物体表面发出，辐射光的强度与物体温度相对应。无源光谱学从没有光源的物体发出的辐射光的光谱强度获取成分信息。检测物体本身中的分子的固有振动，并且光谱特性因此是固有振动峰的发射光谱。相反，传统的主动光谱法用光照射测量目标并从反射光获取光谱特性。测量由光源激发的分子振动，并且光谱特性因此是在分子的本征频率处吸收的能量的吸收光谱。在主动分光中被确认为吸收波长的波长在被动分光中被确认为发射波长。因此，有源光谱和无源光谱具有负-正关系。过去测量中使用的成像型二维傅立叶光谱仪（7至14 µ m）具有透射光学系统。使用三个Ge透镜作为前透镜、物镜透镜和成像透镜，我们构造了使用反射镜作为物镜和成像透镜的反射光学系统。反射镜可确保在宽带宽（3至20 µ m）范围内的平坦度和高光谱反射率，从而扩展了测量带宽。
We aim to measure the glucose concentration in the body through passive mid-infrared spectroscopy using a palm-sized imaging two-dimensional Fourier spectrometer. Radiation in the mid-infrared region (at a wavelength of approximately 10 µm) is emitted from the object surface, with the intensity of the radiated light corresponding to the object temperature. Passive spectroscopy acquires component information from the spectral intensity of the radiated light emitted from the object without a light source. Intrinsic vibrations of molecules in the object itself are detected, and the spectral characteristics are thus the emission spectrum of intrinsic vibration peaks. In contrast, conventional active spectroscopy irradiates the measurement target with light and acquires spectral characteristics from the reflected light. Molecular vibrations excited by the light source are measured, and the spectral characteristics are thus absorption spectra of the energy absorbed at the eigenfrequency of the molecule. The wavelengths that are confirmed as absorption wavelengths in active spectroscopy are confirmed as emission wavelengths in passive spectroscopy. Active spectroscopy and passive spectroscopy thus have a negative–positive relationship. The imaging-type two-dimensional Fourier spectrometer (7 to 14 µm) used in past measurement has transmission optics. Using three Ge lenses for the front lens, objective lens, and imaging lens, we constructed reflective optics using reflective mirrors for the objective and imaging lenses. The reflective mirror guarantees flatness and high spectral reflectance over a wide bandwidth (3 to 20 µm), and the measurement bandwidth is thus extended.
影响因子：
1.9
作者：
Qi, Wei;Suzuki, Yo;Ishimaru, Ichiro
通讯作者：
Ishimaru, Ichiro
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
发表时间：
2016
期刊：
Opt. Eng.
影响因子：
--
作者：
Natsumi Kawashima;Ichiro Ishimaru;Ichiro Ishimaru;Ichiro ISHIMARU;Natsumi Kawashima
通讯作者：
Natsumi Kawashima