Saucedo A Tonatiuh, Mendoza Santoyo Fernando, De la Torre-Ibarra Manuel, Pedrini Giancarlo, Osten Wolfgang
Opt Express. 2006 Feb 20;14(4):1468-75. doi: 10.1364/oe.14.001468.
A rigid endoscope and three different object illumination source positions are used in pulsed digital holography to measure the three orthogonal displacement components from hidden areas of a harmonically vibrating metallic cylinder. In order to obtain simultaneous 3D information from the optical set up, it is necessary to match the optical paths of each of the reference object beam pairs, but to incoherently mismatch the three reference object beam pairs, such that three pulsed digital holograms are incoherently recorded within a single frame of the CCD sensor. The phase difference is obtained using the Fourier method and by subtracting two digital holograms captured for two different object positions.
在脉冲数字全息术中，使用刚性内窥镜和三个不同的物体照明源位置来测量谐波振动金属圆柱体隐藏区域的三个正交位移分量。为了从光学装置中获得同时的三维信息，有必要匹配每个参考物体光束对的光路，但使三个参考物体光束对不相干地失配，以便在电荷耦合器件（CCD）传感器的单个帧内不相干地记录三个脉冲数字全息图。使用傅里叶方法并通过减去针对两个不同物体位置捕获的两个数字全息图来获得相位差。
