Spatially Multiplexed Speckle on 1D Sensors for High-Speed 2D Sensing Applications

Ricardo Rubio-Oliver, Martin Sanz, Michael Sigalov, Javier García, Yevgeny Beiderman

Research output: Contribution to journalArticlepeer-review


Speckle pattern-based remote vibration monitoring has recently become increasingly valuable in industrial, commercial, and medical applications. The dynamic and random nature of speckle patterns offers practical applications for imaging and measurement systems. The speckle pattern is an interference pattern generated by light scattered from a rough surface onto a remote plane. It is typically sensed using area scan cameras (2D), which are limited to framerates of 2–4 kHz and can only capture a small region of interest (ROI). In this work, we propose a technique that enables the capture of synthetic 2D speckle patterns using a 1D high-acquisition-rate sensor and a diffractive optical element (DOE) to produce image replicas. The multiple replicas are scanned by the 1D sensor simultaneously at different spatial positions. This method provides an ability to sense remote vibrations in all directions, contrary to the case with a simple 1D sensing system.

Original languageEnglish
Article number3293
Issue number11
StatePublished - 22 May 2024
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2024 by the authors.


  • 1D sensor
  • remote sensing
  • speckle pattern
  • synthetic image


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