Optimization of detection device geometry for NIR spectroscopy using a three-layered model of stone fruit

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• 作者：Zuojun Tan ; Jing Xie ; Jianjun Chen ; Chizhu Ding
• 关键词：Monte Carlo simulation ; Non ; destructive inspection ; Detection fiber ; Light transport ; Fruit tissue
• 刊名：Optical Review
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：23
• 期：5
• 页码：784-790
• 全文大小：1,486 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Electromagnetism, Optics and Lasers
  
• 出版者：The Optical Society of Japan, co-published with Springer-Verlag GmbH
• ISSN：1349-9432
• 卷排序：23

文摘

The influences of detection device geometry and fiber optic parameters on near infrared spectroscopy measurements were assessed using stone fruit models based on Monte Carlo simulation. The stone fruit was modeled as concentric spherical layered tissues including the skin, the flesh and the core. The choices of the detection angle, the diameter of the detection fiber, the numerical aperture, and the height of the probe were discussed. Receiving diffuse reflectance signals at detection angles in the range of 35°–50° and normalizing the detection signals by the collection area and the solid acceptance angle prior to use are suggested. Fiber probes with diameters D = 0.06 cm or 0.1 cm, NA = 0.20 or 0.30, and height h ≤ 0.8 cm are preferred. The probe deflection angle should be limited to within ±5° to guarantee measurement accuracy.