| 用于玉石结构分析的光学相干层析技术 | |
| 曾楠 ; 何永红 ; 马辉 ; ZENG Nan ; HE Yong-hong ; MA Hui | |
| 2010-05-13 ; 2010-05-13 | |
| 关键词 | 光学相干层析 光学成像与检测 透光特性 钙化 沁色 optical coherence tomography optical imaging and measurement transparency calcification impregnation TP391 |
| 其他题名 | Imaging and analyzing subsurface morphologies of jade objects with optical coherence tomography |
| 中文摘要 | 描述了光学相干层析方法在玉石检测中的应用。利用中心波长1310 nm的宽带光源和傅里叶域光学延迟线实现了扫描速度1 frame/s、纵向分辨率15μm、成像深度3 mm的光学相干层析成像系统。通过实验现象和物理解释阐述了光学相干层析图像信息与玉石结构特征的对应关系,并根据翡翠样品在层析成像中光学散射特性随深度变化的梯度和在二维被测切面内的强弱分布,提出了评估翡翠透明度和净度特性的光学方法,指出OCT图像特征亦可直观显示古玉钙化沁色部分的光学特性差异。实验结果验证了OCT检测方法用于区分翡翠透光特性的可行性,显示了OCT成像在辨别古玉钙化沁色特征中的应用潜力。; An application of optical coherence tomography to jade measurement was described. An optical coherence tomography(OCT) system applied in jade imaging and measurement was implemented with scanning speed of 1 frame/s,depth resolution of 15 μm and penetration depth of 3mm.The experimental results and theoretical analysis of jade imaging and measurement based on OCT method were demonstrated.By analyzing the optical backscattering data based on the variation with depth and the distribution in tomography plane,the transparency of jade could be characterized qualitatively;meanwhile,OCT imaging could be used to observe and provide some discrimination information of the impregnation and calcification of ancient jade materials.The experimental results give an available microstructure information,confirm the feasibility of OCT method in evaluating transmission features of jades,and show a potential of OCT in analyzing subsurface morphologies of archaic jades. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/31953]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 曾楠,何永红,马辉,等. 用于玉石结构分析的光学相干层析技术[J],2010, 2010. |
| APA | 曾楠,何永红,马辉,ZENG Nan,HE Yong-hong,&MA Hui.(2010).用于玉石结构分析的光学相干层析技术.. |
| MLA | 曾楠,et al."用于玉石结构分析的光学相干层析技术".(2010). |
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