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Grant support

Universidad Nacional de Colombia (Hermes 347 grants (53712,50069,49570)); Generalitat Valenciana (PROMETEO/2019/048); European Regional Development Fund (RTI2018-099041-B-I00); Ministerio de Ciencia, Innovacion y Universidades (RTI2018-099041-B-I00).

Analysis of institutional authors

Sanchez-Ortiga, EmilioAuthor
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Article

Resolution limit in opto- digital systems revisited

Publicated to:Optics Express. 31 (2): 2000-2012 - 2023-01-16 31(2), DOI: 10.1364/oe.479458

Authors: Galdon, Laura; Garcia-Sucerquia, Jorge; Saavedra, Genaro; Martinez-Corral, Manuel; Sanchez-Ortiga, Emilio

Affiliations

Univ Europea Valencia, Sch Sci, Valencia 46010, Spain - Author
Univ Nacl Colombia, Sch Phys, Sede Medellin, AA 3840, Medellin 050034, Colombia - Author
Univ Valencia, Dept Opt, 3D Imaging & Display Lab, Burjassot 46100, Spain - Author

Abstract

The resolution limit achievable with an optical system is a fundamental piece of information when characterizing its performance, mainly in case of microscopy imaging. Usually this information is given in the form of a distance, often expressed in microns, or in the form of a cutoff spatial frequency, often expressed in line pairs per mm. In modern imaging systems, where the final image is collected by pixelated digital cameras, the resolution limit is determined by the performance of both, the optical systems and the digital sensor. Usually, one of these factors is considered to be prevalent over the other for estimating the spatial resolution, leading to the global performance of the imaging system ruled by either the classical Abbe resolution limit, based on physical diffraction, or by the Nyquist resolution limit, based on the digital sensor features. This estimation fails significantly to predict the global performance of opto-digital imaging systems, like 3D microscopes, where none of the factors is negligible. In that case, which indeed is the most common, neither the Abbe formula nor the Nyquist formula provide by themselves a reliable prediction for the resolution limit. This is a serious drawback since systems designers often use those formulae as design input parameters. Aiming to overcome this lack, a simple mathematical expression obtained by finely articulating the Abbe and Nyquist formulas, to easily predict the spatial resolution limit of opto-digital imaging systems, is proposed here. The derived expression is tested experimentally, and shows to be valid in a broad range of opto-digital combinations.

Keywords
Lensless singleMicroscopModulation-transfer-function

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Optics Express due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2023, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Atomic and Molecular Physics, and Optics.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 4.94, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Apr 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-04-26, the following number of citations:

  • WoS: 6
  • Scopus: 7
  • Open Alex: 8
  • OpenCitations: 6
Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-04-26:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 9 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Colombia.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (Sánchez Ortiga, Emilio).