Lu M K, Lin H Y, Hsieh C C, Kao F J
Institute of Biophotonics, National Yang-Ming University, Taipei 11221, Taiwan; Business Solutions Laboratory, Chunghwa Telecom Research Institute, Taoyuan, 32661, Taiwan.
Institute of Biophotonics, National Yang-Ming University, Taipei 11221, Taiwan.
Biomed Opt Express. 2016 Aug 10;7(9):3335-3344. doi: 10.1364/BOE.7.003335. eCollection 2016 Sep 1.
In this work, we have successfully implemented supercontinuum based illumination through single fiber coupling. The integration of a single fiber illumination with a miniature CMOS sensor forms a very slim and powerful camera module for endoscopic imaging. A set of tests and animal experiments are conducted accordingly to characterize the corresponding illuminance, spectral profile, intensity distribution, and image quality. The key illumination parameters of the supercontinuum, including color rendering index (CRI: 72%97%) and correlated color temperature (CCT: 3,100K5,200K), are modified with external filters and compared with those from a LED light source (CRI76% & CCT6,500K). The very high spatial coherence of the supercontinuum allows high luminosity conduction through a single multimode fiber (core size~400μm), whose distal end tip is attached with a diffussion tip to broaden the solid angle of illumination (from less than 10° to more than 80°).
在这项工作中，我们通过单光纤耦合成功实现了基于超连续谱的照明。单光纤照明与微型CMOS传感器的集成形成了一个非常纤薄且强大的用于内窥镜成像的相机模块。相应地进行了一系列测试和动物实验，以表征相应的照度、光谱分布、强度分布和图像质量。超连续谱的关键照明参数，包括显色指数（CRI：72%97%）和相关色温（CCT：3100K5200K），通过外部滤光片进行修改，并与来自LED光源的参数（CRI76% & CCT6500K）进行比较。超连续谱的非常高的空间相干性允许通过单根多模光纤（纤芯尺寸~400μm）进行高亮度传导，该光纤的远端尖端连接有一个扩散尖端，以拓宽照明的立体角（从小于10°到大于80°）。
