{"id":1437,"date":"2023-01-20T17:06:03","date_gmt":"2023-01-20T16:06:03","guid":{"rendered":"https:\/\/www.feinwerkoptik-zuend.ch\/?p=1437"},"modified":"2023-01-19T08:36:11","modified_gmt":"2023-01-19T07:36:11","slug":"ein-blick-in-das-endoskop","status":"publish","type":"post","link":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/ein-blick-in-das-endoskop\/","title":{"rendered":"How an image is created from optical components"},"content":{"rendered":"<p class=\"has-base-3-color has-text-color\"><strong>Endoscopes make it possible to look inside the body without performing major invasive procedures. But how does an endoscope work? Ren\u00e9 Z\u00fcnd explains which optical components are necessary and what tasks they fulfil.<\/strong><\/p>\n\n\n\n<p class=\"has-base-3-color has-text-color\">A so-called optical transmission system is needed <strong>to bring the image from the endoscope's tip to the surgeon's eye.<\/strong> This starts with an objective lens, of which there are two variants: <strong>Lenses with fixed focal lengths<\/strong> depict a structure located at a certain distance into one image plane. In an endoscope, the image plane can <strong>can represent an intermediate image<\/strong> or <strong>sensor<\/strong> plane.<\/p>\n\n\n\n<p class=\"has-base-3-color has-text-color\">Objective lenses with <strong>variable focal lengths<\/strong> depict structures that are located at <strong>different distances<\/strong> into one image plane. In this case, the image plane in an endoscope is usually the sensor directly <strong>.<\/strong><\/p>\n\n\n\n<p class=\"has-base-3-color has-text-color\">The intermediate image of the lens is transferred several times into different intermediate images via <strong>so-called reversal systems (2)<\/strong> to bridge the distance to the eye. Subsequently, an ocular (3) is required. These map the intermediate image to <strong>infinity,<\/strong> either observed directly by the eye or transferred via another lens <strong>to a sensor<\/strong> and thus to a digital monitor.<\/p>\n\n\n\n<p class=\"has-base-3-color has-text-color\">Optional components are <strong>angle optics,<\/strong>which can change the viewing angle of the endoscope through prisms <strong>.<\/strong> For example, structures can be observed from the side or at an angle, not just at a 0\u00b0 degree angle directly in front of the lens. Prisms are also used when the handpiece of the endoscope is angled to allow surgeons to <strong>work more ergonomically<\/strong> .<\/p>\n\n\n\n<p class=\"has-base-3-color has-text-color\">FWOZ manufactures all these <strong>optical components<\/strong> as well as <strong>assemblies.<\/strong> Rod lenses are produced the most in quantities since several are needed for one endoscope <strong>.<\/strong> In contrast, at most, two lenses are required at the distal end, one at the proximal end, and one ocular. Therefore, these parts are produced in smaller numbers.<\/p>\n\n\n\n<p class=\"has-base-3-color has-text-color\">Currently, FWOZ is excited about their novel focusing lens that allows structures to be in focus at a constant back focal length (distance between the lens and the image plane). With this enormously small product, we expect to open up new application fields of Surgical Robotics and Endoscopy.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"492\" src=\"https:\/\/www.feinwerkoptik-zuend.ch\/wp-content\/uploads\/2023\/01\/Fokusierbares_Objektiv-1024x492.png\" alt=\"\" class=\"wp-image-1449\" srcset=\"https:\/\/www.feinwerkoptik-zuend.ch\/wp-content\/uploads\/2023\/01\/Fokusierbares_Objektiv-1024x492.png 1024w, https:\/\/www.feinwerkoptik-zuend.ch\/wp-content\/uploads\/2023\/01\/Fokusierbares_Objektiv-300x144.png 300w, https:\/\/www.feinwerkoptik-zuend.ch\/wp-content\/uploads\/2023\/01\/Fokusierbares_Objektiv-768x369.png 768w, https:\/\/www.feinwerkoptik-zuend.ch\/wp-content\/uploads\/2023\/01\/Fokusierbares_Objektiv-18x9.png 18w, https:\/\/www.feinwerkoptik-zuend.ch\/wp-content\/uploads\/2023\/01\/Fokusierbares_Objektiv.png 1520w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>Endoscopes make it possible to look inside the body without performing major invasive procedures. But how does an endoscope work? Ren\u00e9 Z\u00fcnd explains which optical components are necessary and what task they fulfil.<\/p>","protected":false},"author":4,"featured_media":1438,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1437","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-allgemein"],"_links":{"self":[{"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/posts\/1437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/comments?post=1437"}],"version-history":[{"count":5,"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/posts\/1437\/revisions"}],"predecessor-version":[{"id":1452,"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/posts\/1437\/revisions\/1452"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/media\/1438"}],"wp:attachment":[{"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/media?parent=1437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/categories?post=1437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.feinwerkoptik-zuend.ch\/en\/wp-json\/wp\/v2\/tags?post=1437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}