{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T00:33:07Z","timestamp":1771461187638,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2021,10,5]],"date-time":"2021-10-05T00:00:00Z","timestamp":1633392000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100014440","name":"Ministerio de Ciencia, Innovaci\u00f3n y Universidades","doi-asserted-by":"publisher","award":["RTI2018-099041-B-I00"],"award-info":[{"award-number":["RTI2018-099041-B-I00"]}],"id":[{"id":"10.13039\/100014440","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003359","name":"Generalitat Valenciana","doi-asserted-by":"publisher","award":["PROMETEO\/2019\/048"],"award-info":[{"award-number":["PROMETEO\/2019\/048"]}],"id":[{"id":"10.13039\/501100003359","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Lightfield microscopy has raised growing interest in the last few years. Its ability to get three-dimensional information about the sample in a single shot makes it suitable for many applications in which time resolution is fundamental. In this paper we present a novel device, which is capable of converting any conventional microscope into a lightfield microscope. Based on the Fourier integral microscope concept, we designed the lightfield microscope eyepiece. This is coupled to the eyepiece port, to let the user exploit all the host microscope\u2019s components (objective turret, illumination systems, translation stage, etc.) and get a 3D reconstruction of the sample. After the optical design, a proof-of-concept device was built with off-the-shelf optomechanical components. Here, its optical performances are demonstrated, which show good matching with the theoretical ones. Then, the pictures of different samples taken with the lightfield eyepiece are shown, along with the corresponding reconstructions. We demonstrated the functioning of the lightfield eyepiece and lay the foundation for the development of a commercial device that works with any microscope.<\/jats:p>","DOI":"10.3390\/s21196619","type":"journal-article","created":{"date-parts":[[2021,10,10]],"date-time":"2021-10-10T21:37:49Z","timestamp":1633901869000},"page":"6619","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["The Lightfield Microscope Eyepiece"],"prefix":"10.3390","volume":"21","author":[{"given":"Nicol\u00f2","family":"Incardona","sequence":"first","affiliation":[{"name":"3D Imaging and Display Laboratory, Department of Optics, Universitat de Val\u00e8ncia, 46100 Burjassot, Spain"},{"name":"Doitplenoptic S.L., 46980 Paterna, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u00c1ngel","family":"Tolosa","sequence":"additional","affiliation":[{"name":"3D Imaging and Display Laboratory, Department of Optics, Universitat de Val\u00e8ncia, 46100 Burjassot, Spain"},{"name":"Doitplenoptic S.L., 46980 Paterna, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gabriele","family":"Scrofani","sequence":"additional","affiliation":[{"name":"3D Imaging and Display Laboratory, Department of Optics, Universitat de Val\u00e8ncia, 46100 Burjassot, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1449-8976","authenticated-orcid":false,"given":"Manuel","family":"Martinez-Corral","sequence":"additional","affiliation":[{"name":"3D Imaging and Display Laboratory, Department of Optics, Universitat de Val\u00e8ncia, 46100 Burjassot, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Genaro","family":"Saavedra","sequence":"additional","affiliation":[{"name":"3D Imaging and Display Laboratory, Department of Optics, Universitat de Val\u00e8ncia, 46100 Burjassot, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1111\/j.1365-2818.1990.tb04774.x","article-title":"Three-dimensional image formation in confocal microscopy","volume":"159","author":"Sheppard","year":"1990","journal-title":"J. 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