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href="https://ca.wikipedia.org/wiki/Il%C2%B7lusi%C3%B3_de_Z%C3%B6llner" title="Il·lusió de Zöllner – Catalan" lang="ca" hreflang="ca" data-title="Il·lusió de Zöllner" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Z%C3%B6llner-T%C3%A4uschung" title="Zöllner-Täuschung – German" lang="de" hreflang="de" data-title="Zöllner-Täuschung" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Ilusi%C3%B3n_de_Z%C3%B6llner" title="Ilusión de Zöllner – Spanish" lang="es" hreflang="es" data-title="Ilusión de Zöllner" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Illusion_de_Zollner" title="Illusion de Zollner – French" lang="fr" hreflang="fr" data-title="Illusion de Zollner" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Z%C3%B6llner-ill%C3%BAzi%C3%B3" title="Zöllner-illúzió – Hungarian" lang="hu" hreflang="hu" data-title="Zöllner-illúzió" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Z%C3%B6llner-illusie" title="Zöllner-illusie – Dutch" lang="nl" hreflang="nl" data-title="Zöllner-illusie" data-language-autonym="Nederlands" data-language-local-name="Dutch" 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<div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Optical illusion</div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Zollner_illusion.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Zollner_illusion.svg/300px-Zollner_illusion.svg.png" decoding="async" width="300" height="218" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Zollner_illusion.svg/450px-Zollner_illusion.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Zollner_illusion.svg/600px-Zollner_illusion.svg.png 2x" data-file-width="512" data-file-height="372" /></a><figcaption>A version of the Zöllner illusion</figcaption></figure> <p>The <b>Zöllner illusion</b> is an <a href="/wiki/Optical_illusion" title="Optical illusion">optical illusion</a> named after its discoverer, German astrophysicist <a href="/wiki/Johann_Karl_Friedrich_Z%C3%B6llner" title="Johann Karl Friedrich Zöllner">Johann Karl Friedrich Zöllner</a>. In 1860, Zöllner sent his discovery in a letter to physicist and scholar <a href="/wiki/Johann_Christian_Poggendorff" title="Johann Christian Poggendorff">Johann Christian Poggendorff</a>, editor of <i><a href="/wiki/Annalen_der_Physik" title="Annalen der Physik">Annalen der Physik und Chemie</a></i>, who subsequently discovered the related <a href="/wiki/Poggendorff_illusion" title="Poggendorff illusion">Poggendorff illusion</a> in Zöllner's original drawing.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>One depiction of the illusion consists of a series of parallel, black diagonal lines which are crossed with short, repeating lines, the direction of the crossing lines alternating between horizontal and vertical. This creates the illusion that the black lines are not parallel. The shorter lines are on an angle to the longer lines, and this angle helps to create the impression that one end of the longer lines is nearer to the viewer than the other end. This is similar to the way the <a href="/wiki/Wundt_illusion" title="Wundt illusion">Wundt illusion</a> appears. It may be that the Zöllner illusion is caused by this impression of depth.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (December 2017)">citation needed</span></a></i>]</sup> </p><p>This illusion is similar to the <a href="/wiki/Hering_illusion" title="Hering illusion">Hering illusion</a>, <a href="/wiki/Poggendorff_illusion" title="Poggendorff illusion">Poggendorff illusion</a>, <a href="/wiki/M%C3%BCller-Lyer_illusion" title="Müller-Lyer illusion">Müller-Lyer illusion</a>, and <a href="/wiki/Caf%C3%A9_wall_illusion" title="Café wall illusion">Café wall illusion</a>. All these illusions demonstrate how lines can seem to be distorted by their background.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Z%C3%B6llner_illusion&action=edit&section=1" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://gallica.bnf.fr/ark:/12148/bpt6k151955/f687.table">Table VIII Figure 4</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFZöllner_F1860" class="citation journal cs1">Zöllner F (1860). <a rel="nofollow" class="external text" href="https://gallica.bnf.fr/ark:/12148/bpt6k151955/f512.table">"Ueber eine neue Art von Pseudoskopie und ihre Beziehungen zu den von Plateau und Oppel beschrieben Bewegungsphaenomenen"</a>. <i>Annalen der Physik</i>. <b>186</b> (none): 500–25. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1860AnP...186..500Z">1860AnP...186..500Z</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1002%2Fandp.18601860712">10.1002/andp.18601860712</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Annalen+der+Physik&rft.atitle=Ueber+eine+neue+Art+von+Pseudoskopie+und+ihre+Beziehungen+zu+den+von+Plateau+und+Oppel+beschrieben+Bewegungsphaenomenen&rft.volume=186&rft.issue=none&rft.pages=500-25&rft.date=1860&rft_id=info%3Adoi%2F10.1002%2Fandp.18601860712&rft_id=info%3Abibcode%2F1860AnP...186..500Z&rft.au=Z%C3%B6llner+F&rft_id=https%3A%2F%2Fgallica.bnf.fr%2Fark%3A%2F12148%2Fbpt6k151955%2Ff512.table&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZ%C3%B6llner+illusion" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEagleman2001" class="citation journal cs1">Eagleman, David M. (December 2001). <a rel="nofollow" class="external text" href="http://eaglemanlab.net/papers/Eagleman.NatureRevNeuro.Illusions.pdf">"Visual illusions and neurobiology"</a> <span class="cs1-format">(PDF)</span>. <i>Nature Reviews Neuroscience</i>. <b>2</b> (12): 920–926. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2F35104092">10.1038/35104092</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/11733799">11733799</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:205023280">205023280</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nature+Reviews+Neuroscience&rft.atitle=Visual+illusions+and+neurobiology&rft.volume=2&rft.issue=12&rft.pages=920-926&rft.date=2001-12&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A205023280%23id-name%3DS2CID&rft_id=info%3Apmid%2F11733799&rft_id=info%3Adoi%2F10.1038%2F35104092&rft.aulast=Eagleman&rft.aufirst=David+M.&rft_id=http%3A%2F%2Feaglemanlab.net%2Fpapers%2FEagleman.NatureRevNeuro.Illusions.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AZ%C3%B6llner+illusion" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Z%C3%B6llner_illusion&action=edit&section=2" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style 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srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <a href="https://commons.wikimedia.org/wiki/Optical_illusion" class="extiw" title="commons:Optical illusion"><span style="font-style:italic; font-weight:bold;">Optical illusion</span></a>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://aryan.app/randomstuff/parallellines.html">A demonstration of the Zöllner illusion that allows for adjusting the angle of the shorter lines</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output 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href="/wiki/Template:Optical_illusions" title="Template:Optical illusions"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Optical_illusions" title="Template talk:Optical illusions"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Optical_illusions" title="Special:EditPage/Template:Optical illusions"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Optical_illusions_(list)" style="font-size:114%;margin:0 4em"><a href="/wiki/Optical_illusion" title="Optical illusion">Optical illusions</a> (<a href="/wiki/List_of_optical_illusions" title="List of optical illusions">list</a>)</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Illusions</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Afterimage" title="Afterimage">Afterimage</a></li> <li><a href="/wiki/Ambigram" title="Ambigram">Ambigram</a></li> <li><a href="/wiki/Ambiguous_image" title="Ambiguous image">Ambiguous image</a></li> <li><a href="/wiki/Ames_room" title="Ames room">Ames room</a></li> <li><a href="/wiki/Autostereogram" title="Autostereogram">Autostereogram</a></li> <li><a href="/wiki/Barberpole_illusion" title="Barberpole illusion">Barberpole</a></li> <li><a href="/wiki/Bezold_effect" title="Bezold effect">Bezold</a></li> <li><a href="/wiki/Caf%C3%A9_wall_illusion" title="Café wall illusion">Café wall</a></li> <li><a href="/wiki/Checker_shadow_illusion" title="Checker shadow illusion">Checker shadow</a></li> <li><a href="/wiki/Chubb_illusion" title="Chubb illusion">Chubb</a></li> <li><a href="/wiki/Cornsweet_illusion" title="Cornsweet illusion">Cornsweet</a></li> <li><a href="/wiki/Delboeuf_illusion" title="Delboeuf illusion">Delboeuf</a></li> <li><a href="/wiki/Ebbinghaus_illusion" title="Ebbinghaus illusion">Ebbinghaus</a></li> <li><a href="/wiki/Ehrenstein_illusion" title="Ehrenstein illusion">Ehrenstein</a></li> <li><a href="/wiki/Flash_lag_illusion" title="Flash lag illusion">Flash lag</a></li> <li><a href="/wiki/Fraser_spiral_illusion" title="Fraser spiral illusion">Fraser spiral</a></li> <li><a href="/wiki/Gravity_hill" title="Gravity hill">Gravity hill</a></li> <li><a href="/wiki/Grid_illusion" title="Grid illusion">Grid</a></li> <li><a href="/wiki/Hering_illusion" title="Hering illusion">Hering</a></li> <li><a href="/wiki/Impossible_trident" title="Impossible trident">Impossible trident</a></li> <li><a href="/wiki/Irradiation_illusion" title="Irradiation illusion">Irradiation</a></li> <li><a href="/wiki/Jastrow_illusion" title="Jastrow illusion">Jastrow</a></li> <li><a href="/wiki/Lilac_chaser" title="Lilac chaser">Lilac chaser</a></li> <li><a href="/wiki/Mach_bands" title="Mach bands">Mach bands</a></li> <li><a href="/wiki/McCollough_effect" title="McCollough effect">McCollough</a></li> <li><a href="/wiki/M%C3%BCller-Lyer_illusion" title="Müller-Lyer illusion">Müller-Lyer</a></li> <li><a href="/wiki/Necker_cube" title="Necker cube">Necker cube</a></li> <li><a href="/wiki/Oppel-Kundt_illusion" title="Oppel-Kundt illusion">Oppel-Kundt</a></li> <li><a href="/wiki/Orbison_illusion" title="Orbison illusion">Orbison</a></li> <li><a href="/wiki/Penrose_stairs" title="Penrose stairs">Penrose stairs</a></li> <li><a href="/wiki/Penrose_triangle" title="Penrose triangle">Penrose triangle</a></li> <li><a href="/wiki/Peripheral_drift_illusion" title="Peripheral drift illusion">Peripheral drift</a></li> <li><a href="/wiki/Poggendorff_illusion" title="Poggendorff illusion">Poggendorff</a></li> <li><a href="/wiki/Ponzo_illusion" title="Ponzo illusion">Ponzo</a></li> <li><a href="/wiki/Rubin_vase" title="Rubin vase">Rubin vase</a></li> <li><a href="/wiki/Sander_illusion" title="Sander illusion">Sander</a></li> <li><a href="/wiki/Schroeder_stairs" title="Schroeder stairs">Schroeder stairs</a></li> <li><a href="/wiki/Shepard_tables" title="Shepard tables">Shepard tables</a></li> <li><a href="/wiki/Spinning_dancer" title="Spinning dancer">Spinning dancer</a></li> <li><a href="/wiki/Ternus_illusion" title="Ternus illusion">Ternus</a></li> <li><a href="/wiki/Vertical%E2%80%93horizontal_illusion" title="Vertical–horizontal illusion">Vertical–horizontal</a></li> <li><a href="/wiki/White%27s_illusion" title="White's illusion">White's</a></li> <li><a href="/wiki/Wundt_illusion" title="Wundt illusion">Wundt</a></li> <li><a class="mw-selflink selflink">Zöllner</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="3" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Optical_Illustion-Ambiguous_Patterns.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Optical_Illustion-Ambiguous_Patterns.svg/30px-Optical_Illustion-Ambiguous_Patterns.svg.png" decoding="async" width="30" height="112" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Optical_Illustion-Ambiguous_Patterns.svg/45px-Optical_Illustion-Ambiguous_Patterns.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/51/Optical_Illustion-Ambiguous_Patterns.svg/60px-Optical_Illustion-Ambiguous_Patterns.svg.png 2x" data-file-width="117" data-file-height="438" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Popular culture</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Op_art" title="Op art">Op art</a></li> <li><i><a href="/wiki/Trompe-l%27%C5%93il" title="Trompe-l'œil">Trompe-l'œil</a></i></li> <li><i><a href="/wiki/Spectropia" title="Spectropia">Spectropia</a></i> (1864 book)</li> <li><i><a href="/wiki/Ascending_and_Descending" title="Ascending and Descending">Ascending and Descending</a></i> (1960 drawing)</li> <li><i><a href="/wiki/Waterfall_(M._C._Escher)" title="Waterfall (M. C. Escher)">Waterfall</a></i> (1961 drawing)</li> <li><i><a href="/wiki/The_dress" title="The dress">The dress</a></i> (2015 photograph)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Accidental_viewpoint" title="Accidental viewpoint">Accidental viewpoint</a></li> <li><a href="/wiki/Auditory_illusion" title="Auditory illusion">Auditory illusions</a></li> <li><a href="/wiki/Illusion" title="Illusion">Illusions</a></li> <li><a href="/wiki/Tactile_illusion" title="Tactile illusion">Tactile illusions</a></li> <li><a href="/wiki/Time_perception" title="Time perception">Temporal illusion</a></li></ul> </div></td></tr></tbody></table></div> <p><br /> </p> <style data-mw-deduplicate="TemplateStyles:r1012311289">.mw-parser-output .asbox{position:relative;overflow:hidden}.mw-parser-output .asbox table{background:transparent}.mw-parser-output .asbox p{margin:0}.mw-parser-output .asbox p+p{margin-top:0.25em}.mw-parser-output .asbox-body{font-style:italic}.mw-parser-output .asbox-note{font-size:smaller}.mw-parser-output .asbox .navbar{position:absolute;top:-0.75em;right:1em;display:none}</style><div role="note" class="metadata plainlinks asbox stub"><table role="presentation"><tbody><tr class="noresize"><td><span typeof="mw:File"><a href="/wiki/File:Lens_triplet.svg" class="mw-file-description"><img alt="Stub icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/74/Lens_triplet.svg/36px-Lens_triplet.svg.png" decoding="async" width="36" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/74/Lens_triplet.svg/54px-Lens_triplet.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/74/Lens_triplet.svg/72px-Lens_triplet.svg.png 2x" data-file-width="241" data-file-height="201" /></a></span></td><td><p class="asbox-body">This <a href="/wiki/Optics" title="Optics">optics</a>-related article is a <a href="/wiki/Wikipedia:Stub" title="Wikipedia:Stub">stub</a>. 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