MicroLED chromatic confocal microscope.
MicroLED chromatic confocal microscope.
复制标题
MicroLED彩色共聚焦显微镜。
DOI：
10.1364/ol.427477
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发表时间：
2021-06-01
期刊：
影响因子：
3.6
通讯作者：
Liang, Rongguang
中科院分区：
文献类型：
--
作者：
Li, Shaobai;Song, Bofan;Peterson, Tyler;Hsu, Jian;Liang, Rongguang
在这封信中，提出并演示了一种基于微led的彩色共聚焦显微镜，该显微镜具有虚拟共聚焦狭缝，无需任何机械扫描或外部光源即可进行三维（3D）分析。在提出的方法中，微尺度发光二极管（microLED）面板作为点源阵列来实现横向扫描。轴向扫描是通过非球面物镜的色差来实现的。利用虚拟针孔技术提高深度重建的对比度和精度。该系统的性能已被证明与金刚石转铜样品和洋葱表皮。实验结果表明，微型led面板是便携式三维共聚焦显微镜的一种潜在解决方案。对未来微led在共聚焦成像中的需求提出了几点考虑和展望。
In this Letter, a microLED-based chromatic confocal microscope with a virtual confocal slit is proposed and demonstrated for three-dimensional (3D) profiling without any mechanical scanning or external light source. In the proposed method, a micro-scale light-emitting diode (microLED) panel works as a point source array to achieve lateral scanning. Axial scanning is realized through the chromatic aberration of an aspherical objective. A virtual pinhole technique is utilized to improve the contrast and precision of depth reconstruction. The system performance has been demonstrated with a diamond-turned copper sample and onion epidermis. The experimental results show that the microLED panel could be a potential solution for portable 3D confocal microscopy. Several considerations and prospects are proposed for future microLED requirements in confocal imaging.