Cui Qi, Liang Rongguang
Appl Opt. 2019 Mar 10;58(8):2085-2090. doi: 10.1364/AO.58.002085.
A chromatic confocal microscopy system in combination with two liquid crystal display (LCD) panels is proposed and demonstrated for surface profiling. The major advantage of this system is no mechanical translation is needed for three-dimensional (3D) imaging. Axial scanning is realized thanks to the chromatic aberration in the objective, whereas lateral scanning is achieved by turning on different pixels on LCDs. Chromatic aberration of the objective lens is used to provide wavelength-to-depth coding, and decoding is realized by using a dispersion prism. System performance is validated with a 50 μm step standard and the capability of 3D imaging is demonstrated with an onion epidermis.
本文提出并演示了一种结合两个液晶显示器（LCD）面板的彩色共聚焦显微镜系统用于表面轮廓测量。该系统的主要优点是三维（3D）成像无需机械平移。由于物镜中的色差实现了轴向扫描，而横向扫描则通过打开LCD上的不同像素来完成。物镜的色差用于提供波长到深度的编码，并通过使用色散棱镜实现解码。使用50μm步长标准验证了系统性能，并通过洋葱表皮展示了3D成像能力。
