Optoelectronic system for monitoring displacements, based on LED fiducial marks

Pantyushin, Anton V.; Serikova, Maria G.; Тимофеев, А. Н.

doi:10.1364/jot.76.000507

Cited by 8 publications

(1 citation statement)

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“…Optoelectronic methods and means of contactless control the position of objects relative to the extended linear base relevant in many areas of technology 1,2,3 . This is because the non-contact, distance and the ability to fully automate the processes of measurement combined with high speed makes extensive to use of opto -electronic systems (OES) for the active control of the spatial position of objects (disposition).…”

Section: Introductionmentioning

confidence: 99%

Alignment control optical-electronic system with duplex retroreflectors

Kleshchenok

Anisimov²,

Lashmanov

et al. 2014

SPIE Proceedings

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In this paper, we consider the influence of various factors and interference invariant transformations measuring information on autoreflection schemes alignment control. Theoretical and experimental studies of an error for biprizm scheme. Shown that the main influencing factors are non-linear transformations in optical systems and the impact of the air path. Experimental studies were conducted based on two alignment control opto-electronic systems in which the control element (CE) is configured as one or two corner-cube retroreflectors.

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Section: Introductionmentioning

confidence: 99%

Alignment control optical-electronic system with duplex retroreflectors

Kleshchenok

Anisimov²,

Lashmanov

et al. 2014

SPIE Proceedings

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Pipe Alignment with the Image Based Visual Servo Control

Kholodilin,

Savosteenko,

Maksimov

et al. 2023

Communications in Computer and Information Science

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Holographic fiducial marks: A system for precise alignment of x-ray optics

Herring

Yusuf

Neustock

et al. 2020

Applied Physics Letters

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This Letter covers the design and implementation of a generalizable system for the precise alignment of X-ray gratings. Next-generation high-energy grating-based Differential Phase Contrast (gDPC) X-ray imaging systems require precise alignment of the X-ray gratings as low as 1 mrad in rotation and 0.5 mm in translation. In this work, we designed holographic fiducial marks, consisting of four reflective Fresnel zone plates, each placed in a separate quadrant of the mark. When illuminated with a collimated laser beam, each mark creates a predefined pattern of four points, which changes quantitatively for any misalignment in each of the three translational and three rotational degrees of freedom. We fabricated the designed fiducial marks using photolithography and etching processes. The experimental system is implemented using a HeNe laser and an optical imaging system, which includes a beam expander, a plate beam splitter, and a CMOS camera, suitable for aligning practical gratings in gDPC X-ray imaging systems. Our experimental results demonstrate the rotational precision capabilities of the reported alignment system down to 0.42 mrad around the optical axis and 0.03 mrad around the axes perpendicular to the optical axis. The translational precision of 83.64 μm along the optical axis and 1.22 μm along the axes perpendicular to the optical axis is also demonstrated.

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Optoelectronic system for monitoring displacements, based on LED fiducial marks

Cited by 8 publications

References 0 publications

Alignment control optical-electronic system with duplex retroreflectors

Alignment control optical-electronic system with duplex retroreflectors

Pipe Alignment with the Image Based Visual Servo Control

Holographic fiducial marks: A system for precise alignment of x-ray optics

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