光学学报, 2018, 38 (1): 0111004, 网络出版: 2018-08-31
基于双色LED芯片的双波长像面数字全息显微术 下载: 1039次
Dual-Wavelength Image-Plane Digital Holographic Microscopy Based on Bi-Color LED Chips
成像系统 双波长像面数字全息显微术 双色LED芯片 相位分布 面型分布 imaging systems dual-wavelength image-plane digital holographic mi bi-color LED chips phase distribution surface profile
摘要
提出了一种基于双色LED芯片的双波长像面数字全息显微术。将主波长为670 nm的红光芯片和主波长为521 nm的绿光芯片封装成半球型LED芯片,然后利用彩色CCD相机获取被测样品在两种照明光波下的彩色相移数字全息图,最后采用色彩分离技术、相移技术及双波长相位提取技术获取被测样品的相位分布及面型分布。实验结果证明了本文方法的可行性。
Abstract
Dual-wavelength image-plane digital holographic microscopy based on bi-color LED chips is proposed. Firstly, a red LED chip with central wavelength of 670 nm and a green LED chip with central wavelength of 521 nm are packaged as a hemispherical LED chip. Composite holograms at different wavelengths and phase shift are recorded with a color CCD camera. The phase distribution and surface profile of the sample are reconstructed based on the color separation technology, phase shifting technology and dual-wavelength phase extracting technology. The feasibility of the proposed method is demonstrated by the experimental results.
邓丽军, 黄星艳, 曾吕明, 黄振, 刘国栋. 基于双色LED芯片的双波长像面数字全息显微术[J]. 光学学报, 2018, 38(1): 0111004. Lijun Deng, Xingyan Huang, Lüming Zeng, Zhen Huang, Guodong Liu. Dual-Wavelength Image-Plane Digital Holographic Microscopy Based on Bi-Color LED Chips[J]. Acta Optica Sinica, 2018, 38(1): 0111004.