Simultaneous multi-dimensional spatial frequency modulation imaging

Simultaneous multi-dimensional spatial frequency modulation imaging
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同时多维空间频率调制成像

DOI:
10.1080/15599612.2019.1694610
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发表时间:
2020
影响因子:
5.5
通讯作者:
Squier, Jeff
Squier, Jeff
中科院分区:
工程技术3区
文献类型:
--
作者:
Worts, Nathan;Czerski, John;Jones, Jason;Field, Jeffrey J.;Bartels, Randy;Squier, Jeff

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先进制造 (AM) 的主要挑战之一是缺乏有效的光学指标来确保制造过程的质量控制。当前的许多成像技术对数据的要求过高,并且需要计算密集型后处理才能有效地表征各种增材制造环境。空间调频成像 (SPIFI) 解决了其中许多问题,具有以下优点:它与长工作距离光学器件兼容,提供大视场,具有单晶件检测功能,并且可以提供增强的分辨率。在这里,我们首次在多个维度上演示了具有增强分辨率的 SPIFI。这是通过合并多个线性扩展激励源来实现的,这些激励源的轴彼此成任意角度。该系统利用单个调制掩模,可以在现有成像系统(例如激光 AM 系统中的成像系统)中轻松实现。
One of the primary challenges in advanced manufacturing (AM) is the lack of efficient optical metrics for ensuring quality control over the manufacturing process. Many current imaging techniques have excessive data requirements and require computationally intensive post-processing to effectively characterize various AM environments. Spatial frequency modulated imaging (SPIFI) addresses many of these issues with the following benefits: it is compatible with long working distance optics, provides a large field-of-view, features single element detection, and can provide enhanced resolution. Here, we demonstrate SPIFI with enhanced resolution in multiple dimensions for the first time. This is achieved by incorporating multiple linear extended excitation sources oriented with axes at arbitrary angles with respect to each other. The system utilizes a single modulation mask enabling facile implementation within existing imaging systems such as those found in laser AM systems.
DOI: 10.1364/josaa.32.002156
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影响因子: 1.9
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