Synthetic aperture interferometry: High-resolution optical measurement over an exceptionally large field of view

合成孔径干涉测量：在超大视场上进行高分辨率光学测量

• 批准号: EP/M020940/1
• 负责人: Jeremy Coupland
• 金额: $ 88.18万
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM020940%2F1
• 关键词: Synthetic; aperture; interferometry; resolution; optical

This proposal is concerned with the development of synthetic aperture interferometry (SAI) for high resolution measurement of large scale, precision engineered parts (e.g. aerospace components and photovoltaic panels). SAI is a new way to link several small interferometers together to make one large interferometer with dramatically increased resolutution and/or field of view. In principle this is similar to the way that arrays of radio telescopes can be linked to provide the equivalent of a much larger telescope. For the case of surface metrology however, it is also important to consider the object illumination as this has an equally important effect on resolution.In this work we propose to build a flexible system using an array of 15x15 5MP cameras and illumination at 3 separate laser wavelengths diverging from up to 225 fibre-optic sources. This is represents around 1TB of data and is at the limits of the processing capability of a high specification desktop computer. In this proposal, however, we will consider a hierachical approach to data analysis that will initially interogate a limited number of cameras and illumination conditions to indicate regions that may be out of tolerance. Subsequently, high resolution analysis will be used to measure the highlighted regions.We will work closely with instrument manufacturers and end users to ensure that the technology is embedded within the UKs expanding high value manufacturing industry.

该提案涉及开发用于大规模精密工程部件（例如航空航天部件和光伏板）的高分辨率测量的合成孔径干涉测量法（SAI）。SAI是一种将多个小型干涉仪连接在一起的新方法，它可以极大地提高干涉仪的分辨率和视场。原则上，这类似于射电望远镜阵列可以连接起来以提供相当于一个更大望远镜的方式。然而，对于表面计量的情况，考虑物体照明也很重要，因为这对分辨率具有同样重要的影响。在这项工作中，我们建议使用15 x 15 5 5 MP相机阵列和3个独立激光波长的照明来构建一个灵活的系统。从多达225个光纤源发散。这表示大约1TB的数据，并且处于高规格台式计算机的处理能力的极限。然而，在本提案中，我们将考虑一种分层的数据分析方法，该方法最初将对有限数量的摄像机和照明条件进行交互，以指示可能超出公差的区域。随后，高分辨率分析将用于测量突出区域。我们将与仪器制造商和最终用户密切合作，以确保该技术嵌入英国不断扩大的高价值制造业。

项目成果

Scattering and three-dimensional imaging in surface topography measuring interference microscopy.

• DOI: 10.1364/josaa.411929
• 发表时间: 2021-02
• 期刊: Journal of the Optical Society of America. A, Optics, image science, and vision
• 作者: Rong Su;J. Coupland;C. Sheppard;R. Leach

Development of a coherent imager with a large field of view for synthetic aperture interferometry

用于合成孔径干涉测量的大视场相干成像仪的研制

• DOI: 10.26174/thesis.lboro.16573712
• 发表时间: 2021
• 作者: Garcia-Armenta J

Characterization of the reference wave in a compact digital holographic camera.

紧凑型数字全息相机中参考波的表征。

• DOI: 10.1364/ao.57.00a235
• 发表时间: 2018
• 期刊: Applied optics
• 影响因子: 1.9
• 作者: Park IS

The influence of tilt on surface roughness measurement using the focus variation microscope

倾斜对焦距变化显微镜表面粗糙度测量的影响

• 发表时间: 2015
• 期刊: Proceedings of the 15th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2015
• 作者: Coupland J.

Transmission mode synthetic aperture interferometry using a compact coherent imager and switched fiber-optic illumination

使用紧凑型相干成像仪和开关光纤照明的传输模式合成孔径干涉测量

• DOI: 10.1016/j.optlaseng.2023.107855
• 发表时间: 2024
• 期刊: Optics and Lasers in Engineering
• 影响因子: 4.6
• 作者: Garcia-Armenta J