Seibert Q. Duntley

<!DOCTYPE html> <html class=""> <head> <title>Seibert Q. Duntley | Optica</title> <meta name="description" content="Optica is the leading society in optics and photonics. Quality information and inspiring interactions through publications, meetings, and membership." /> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width,initial-scale=1.0,shrink-to-fit=no"> <meta name="google-site-verification" content="O8GQM5c8kWiX8AlBF0x___NvqBslQHkS5fU89l7_lFE" /> <meta name="google-site-verification" content="7O342y8sdwfisgna77OFVUnjk_I7b_7TPJSF6cY8O5w" /> <meta name="google-site-verification" content="lFCb00qSSgOFRJPRNVs7uUFxoUJzHBMnDOxBPnuA4qA" /> <meta name="facebook-domain-verification" content="mfx4ntf75cih86ugui5adb5sb913if" /> <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "Organization", "name":"Optica", "url": "https://www.optica.org", "logo": "https://www.optica.org/osaorg/media/optica/about/newsroom/logos/Optica_transition_logo_black@2x.png", "founder":"Perley G. Nutting", "sameAs": [ "https://www.facebook.com/opticaworldwide", "https://www.twitter.com/opticaworldwide/", "https://www.linkedin.com/company/optica-worldwide", "https://www.youtube.com/OpticaWorldwide", "https://www.instagram.com/optica.worldwide/", "https://en.wikipedia.org/wiki/Optica_(society)" ] } </script> <script type="application/ld+json"> { "@context": "https://schema.org/", "@type": "WebSite", "name": "Optica", "url": "https://optica.org/", "potentialAction": { "@type": "SearchAction", "target": "https://www.optica.org/search/?searchtext={search_term_string}", "query-input": "required name=search_term_string" } } </script> <script type="importmap"> { "imports": { "jquery": "https://cdn.jsdelivr.net/combine/npm/jquery@3.5.1/dist/jquery.slim.min.js,npm/popper.js@1.16.1,npm/bootstrap@4.5.0,npm/masonry-layout@4.2.2/dist/masonry.pkgd.min.js,npm/packery@2.1.2/dist/packery.pkgd.min.js,npm/imagesloaded@5.0.0/imagesloaded.pkgd.min.js" } } </script> <link href="/_content/Kentico.Content.Web.Rcl/Content/Bundles/Public/systemPageComponents.min.css" rel="stylesheet" />  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-M2ZC33M');</script>  <link rel="shortcut icon" type="image/jpg" href="/img/template-images/favicon.ico" /> <link type="image/x-icon" rel="shortcut icon" href="/img/template-images/favicon.ico" /> <link type="image/x-icon" rel="icon" href="/img/template-images/favicon.ico" /> <link rel="apple-touch-icon" sizes="180x180" href="/img/template-images/apple-touch-icon.png" /> <link rel="icon" type="image/png" sizes="32x32" href="/img/template-images/favicon-32x32.png" /> <link rel="icon" type="image/png" sizes="16x16" href="/img/template-images/favicon-16x16.png" /> <link rel="mask-icon" href="/img/template-images/safari-pinned-tab.svg" color="#5bbad5" /> <meta name="msapplication-TileColor" content="#603cba" /> <meta name="theme-color" content="#771bc9" /> <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Material+Icons|Material+Icons+Outlined"> <link rel="stylesheet" href="https://cdn.materialdesignicons.com/5.3.45/css/materialdesignicons.min.css"> <script src="https://kit.fontawesome.com/1eaee2a481.js" crossorigin="anonymous"></script> <link rel="stylesheet" href="/assets/css/style.css?v=m8SR35mgFOIyt4n0_CDb7_6Aefx_6S6ORjekrb36iGY"> </head> <body class="LTR Chrome ENUS ContentBody">  <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-M2ZC33M" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>  <div class="page"> <a class="sr-only sr-only-focusable" href="#content" aria-label="Skip To Content">Skip To Content</a> <header> <div class="secondary-header bg-lightblue"> <div class="secondary-header__wrapper container"> <div class="d-flex mr-auto"> <button aria-expanded="false" aria-haspopup="true" class="btn align-self-center" data-toggle="modal" data-target="#otherSitesModal" id="sitesMenuButton"> <i class="fa-solid fa-grid-round mr-1"></i>Other Sites </button> <div id="otherSitesModal" aria-labelledby="sitesMenuButton" tabindex="-1" aria-hidden="true" class="modal fade border-gray-200 p-0"> <div class="modal-dialog m-0 w-100 modal-dialog-othersites bg-lightblue"> <div class="modal-content container px-0 bg-transparent border-0"> <div class="modal-header border-0 px-0 py-2"> <h5 class="modal-title"> <span class="fa-solid fa-grid-round mr-1"></span> Other sites </h5> <button class="close" data-dismiss="modal" aria-label="close" type="button"> <span aria-hidden="true">×</span> </button> </div> <div class="modal-body px-0 py-2"> <ul class="app-menu"> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://awards.optica.org"> <span class="fa-regular fa-circle-right"></span> BEAM </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://www.cleoconference.org"> <span class="fa-regular fa-circle-right"></span> CLEO </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://www.frontiersinoptics.com"> <span class="fa-regular fa-circle-right"></span> FIO+LS </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://www.gemminitiative.org"> <span class="fa-regular fa-circle-right"></span> GEMM Initiative </a> </h5> </li> <li class="app-menu__item"> <h5> <a class="app-menu__link card--rounded" href="https://www.optica.org/history"> <span class="fa-regular fa-circle-right"></span> Living History </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://www.lightourfuture.org"> <span class="fa-regular fa-circle-right"></span> NPI </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://www.ofcconference.org"> <span class="fa-regular fa-circle-right"></span> OFC </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://www.optica-opn.org"> <span class="fa-regular fa-circle-right"></span> OPN </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://opg.optica.org"> <span class="fa-regular fa-circle-right"></span> Optica Publishing Group </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://www.opticastore.org"> <span class="fa-regular fa-circle-right"></span> Optica Store </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://www.optics4kids.org"> <span class="fa-regular fa-circle-right"></span> Optics 4 Kids </a> </h5> </li> <li class="app-menu__item"> <h5> <a target='_blank' class="app-menu__link card--rounded" href="https://prism.optica.org"> <span class="fa-regular fa-circle-right"></span> Prism </a> </h5> </li> </ul> </div> </div> </div> </div> </div> <nav class="secondary-nav"> <ul class="secondary-nav__list d-flex"> <li class="secondary-nav__item dropdown"> <a class="secondary-nav__link dropdown-toggle" href="#" role="button" data-toggle="dropdown" aria-expanded="false"> Foundation <span class="fas fa-chevron-down ml-1"></span> </a> <div class="nav-menu nav-menu--secondary dropdown-menu "> <ul class="col list-unstyled mx-1 d-flex flex-row"> <div> <li> <a class="d-inline-block pb-1" href="/foundation/"> Overview </a> </li> <li> <a class="d-inline-block pb-1" href="/foundation/about/"> About </a> </li> <li> <a class="d-inline-block pb-1" href="/foundation/giving/"> Donate </a> </li> <li> <a class="d-inline-block pb-1" href="/foundation/opportunities/schools_training_programs/"> Schools & Training Programs </a> </li> <li> <a class="d-inline-block pb-1" href="/foundation/opportunities/"> Opportunities </a> </li> </div> </ul> </div> </li> <li class="secondary-nav__item dropdown"> <a class="secondary-nav__link dropdown-toggle" href="#" role="button" data-toggle="dropdown" aria-expanded="false"> Careers <span class="fas fa-chevron-down ml-1"></span> </a> <div class="nav-menu nav-menu--secondary dropdown-menu "> <ul class="col list-unstyled mx-1 d-flex flex-row"> <div> <li> <a class="d-inline-block pb-1" href="/careers/"> Explore Careers </a> </li> <li> <a class="d-inline-block pb-1" href="/careers/for_employers/"> For Employers </a> </li> <li> <a class="d-inline-block pb-1" href="/careers/professional_development/"> Professional Development </a> </li> </div> </ul> </div> </li> <li class="secondary-nav__item dropdown"> <a class="secondary-nav__link dropdown-toggle" href="#" role="button" data-toggle="dropdown" aria-expanded="false"> About <span class="fas fa-chevron-down ml-1"></span> </a> <div class="nav-menu nav-menu--secondary dropdown-menu dropdown-menu-right"> <ul class="col list-unstyled mx-1 d-flex flex-row"> <div> <li> <a class="d-inline-block pb-1" href="/about/"> About Optica </a> </li> <li> <a class="d-inline-block pb-1" href="/about/leadership_and_volunteers/"> Leadership & Volunteers </a> </li> <li> <a class="d-inline-block pb-1" href="/about/optica_community/"> Optica Community </a> </li> <li> <a class="d-inline-block pb-1" href="/about/about_our_brand/"> About our Brand </a> </li> <li> <a class="d-inline-block pb-1" href="/about/strategy/"> Strategy </a> </li> </div> <div> <li> <a class="d-inline-block pb-1" href="/about/newsroom/"> Newsroom </a> </li> <li> <a class="d-inline-block pb-1" href="/about/what_is_optics/"> What is Optics </a> </li> <li> <a class="d-inline-block pb-1" href="/history/"> Living History </a> </li> <li> <a class="d-inline-block pb-1" href="/about/work_at_optica/"> Work at Optica </a> </li> </div> <div> <li> <a class="d-inline-block pb-1" href="/about/contact/"> Contact Us </a> </li> <li> <a class="d-inline-block pb-1" href="/about/policies/"> Policies </a> </li> <li> <a class="d-inline-block pb-1" href="/media_library/"> Video Library </a> </li> </div> <div> <li> <a class="d-inline-block pb-1" href="/history/milestones/"> Milestone Events & Celebrations </a> </li> <li> <a class="d-inline-block pb-1" href="/history/optica_timeline/"> Optica Timeline </a> </li> <li> <a class="d-inline-block pb-1" href="/history/biographies/"> Biographies & Memoirs </a> </li> <li> <a class="d-inline-block pb-1" href="/history/"> History of Optica </a> </li> <li> <a class="d-inline-block pb-1" href="/history/multimedia/"> Multimedia </a> </li> <li> <a class="d-inline-block pb-1" href="/history/optica_nobel_laureates/"> Optica Nobel Laureates </a> </li> <li> <a class="d-inline-block pb-1" href="/history/amplify_black_voices_in_optics/"> Amplify Black Voices in Optics </a> </li> <li> <a class="d-inline-block pb-1" href="/history/faces_of_optica/"> Faces of Optica </a> </li> </div> </ul> </div> </li> </ul> </nav> <nav class="secondary-nav"> <ul class="secondary-nav__list"> <li class="secondary-nav__item"> <a class="p-1 secondary-nav__link" href="/account/login/?returnUrl=%2Fhistory%2Fbiographies%2Fbios%2Fseibert-q--duntley%2F">Log In</a> </li> </ul> </nav> <a class="btn text-black align-self-center d-none d-xl-block" href="/search"> <span class="sr-only">Search</span> <span class="fa-regular fa-magnifying-glass h5" aria-hidden="true"></span> </a> </div> </div> <div class="main-header"> <div class="main-header__wrapper pl-2"> <a class="main-header__logo" href="http://www.optica.org"> <span class="sr-only">Optica</span> <svg viewBox="0 0 1000 150" fill="currentColor" width="100%" height="100%"> <path d="M134.07,67.55c.03,37.24-30.14,67.45-67.38,67.48-33.29.02-61.61-24.24-66.69-57.14h20c5.71,25.73,31.21,41.96,56.94,36.25s41.96-31.21,36.25-56.94S81.98,15.24,56.25,20.95c-17.7,3.93-31.64,17.54-35.99,35.14H.16C6.49,19.39,41.37-5.23,78.06,1.1c32.35,5.58,55.98,33.63,55.98,66.46h.03ZM442.64,132.79h20.58V2.31h-20.58v130.48ZM229.54,2.31h-65.94v130.48h20.58V21.47h41.68c18.58,0,28,6.19,28,18.89,0,14.71-15.22,18.36-28,18.36h-19.92v19.17h24.09c12.65,0,23.55-3.25,31.53-9.39,8.62-6.63,13.18-16.74,13.18-28.14.04-22.91-18.14-38.05-45.2-38.05ZM342.35,132.79h20.59V38.12h-20.59v94.67ZM295.14,2.31h115v19.16h-115V2.31ZM715.49,2.31h-18.93l-63.12,130.47h22.21l50.38-104.12,23.91,49.23h-26l-9.24,19.17h44.46l17.23,35.72h22.21L715.49,2.31ZM608.49,82.45c-8.23,25.05-35.21,38.68-60.26,30.44s-38.68-35.21-30.44-60.26c8.23-25.05,35.21-38.68,60.26-30.44,13.82,4.54,24.81,15.14,29.86,28.78h20.59c-9.14-36.15-45.86-58.04-82-48.9-36.15,9.14-58.04,45.86-48.9,82,9.14,36.15,45.86,58.04,82,48.9,24.62-6.23,43.67-25.75,49.29-50.52h-20.4Z"/> </svg> </a> <nav class="main-nav"> <ul class="main-nav__list"> <li class="main-nav__item dropdown"> <a class="main-nav__link dropdown-toggle" href="#" role="button" data-display="static" data-toggle="dropdown" aria-expanded="false"> Events <span class="fas fa-chevron-down ml-1"></span> </a> <div class="dropdown-menu nav-menu dropdown-menu-lg-right"> <div class="d-flex flex-row"> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/events/"> Overview </a> </li> <li> <a class="d-inline-block pb-1" href="/events/meeting_opportunities/"> Services </a> </li> <li> <a class="d-inline-block pb-1" href="/events/meeting_archives/"> Archives </a> </li> </ul> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/events/"> Event Calendar </a> </li> <li> <a class="d-inline-block pb-1" href="/events/speakers/"> Speaker Resources </a> </li> </ul> <ul class="list-unstyled px-1"> </ul> </div> </div> </li> <li class="main-nav__item dropdown"> <a class="main-nav__link dropdown-toggle" href="#" role="button" data-display="static" data-toggle="dropdown" aria-expanded="false"> Membership <span class="fas fa-chevron-down ml-1"></span> </a> <div class="dropdown-menu nav-menu dropdown-menu-lg-right"> <div class="d-flex flex-row"> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/membership/"> Overview </a> </li> <li> <a class="d-inline-block pb-1" href="/membership/join/individual/"> Individual </a> </li> <li> <a class="d-inline-block pb-1" href="/membership/join/corporate/"> Corporate </a> </li> </ul> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/membership/distinguished_honorary/"> Distinguished & Honorary </a> </li> <li> <a class="d-inline-block pb-1" href="/membership/member_programs/"> Member Programs </a> </li> <li> <a class="d-inline-block pb-1" href="/membership/member_resources/"> Member Resources </a> </li> </ul> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/membership/join/"> Join Optica </a> </li> <li> <a class="d-inline-block pb-1" href="/membership/benefits_services/"> Benefits & Services </a> </li> </ul> </div> </div> </li> <li class="main-nav__item "> <a class="main-nav__link" href="/publications/"> Publications </a> </li> <li class="main-nav__item dropdown"> <a class="main-nav__link dropdown-toggle" href="#" role="button" data-display="static" data-toggle="dropdown" aria-expanded="false"> Industry Resources <span class="fas fa-chevron-down ml-1"></span> </a> <div class="dropdown-menu nav-menu dropdown-menu-lg-right"> <div class="d-flex flex-row"> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/industry/"> Overview </a> </li> <li> <a class="d-inline-block pb-1" href="/industry/corporate_membership/"> Corporate Membership </a> </li> <li> <a class="d-inline-block pb-1" href="/industry/industry_events/"> Industry Events </a> </li> </ul> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/industry/online_industry_library/"> Market Intelligence </a> </li> <li> <a class="d-inline-block pb-1" href="/industry/exhibitions/"> Marketing </a> </li> </ul> </div> </div> </li> <li class="main-nav__item dropdown"> <a class="main-nav__link dropdown-toggle" href="#" role="button" data-display="static" data-toggle="dropdown" aria-expanded="false"> Community <span class="fas fa-chevron-down ml-1"></span> </a> <div class="dropdown-menu nav-menu dropdown-menu-lg-right"> <div class="d-flex flex-row"> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/get_involved/"> Overview </a> </li> <li> <a class="d-inline-block pb-1" href="/get_involved/awards_and_honors/"> Awards & Honors </a> </li> <li> <a class="d-inline-block pb-1" href="/get_involved/diversity_inclusion/"> Diversity, Equity and Inclusion </a> </li> <li> <a class="d-inline-block pb-1" href="/get_involved/earlycareer/"> Early Career </a> </li> <li> <a class="d-inline-block pb-1" href="/get_involved/education_outreach/"> Education Outreach </a> </li> <li> <a class="d-inline-block pb-1" href="/get_involved/public_policy/"> Global Policy & Affairs </a> </li> </ul> <ul class="list-unstyled px-1"> <li> <a class="d-inline-block pb-1" href="/get_involved/local_section/"> Local Sections </a> </li> <li> <a class="d-inline-block pb-1" href="/get_involved/students/"> Students </a> </li> <li> <a class="d-inline-block pb-1" href="/get_involved/technical_groups/"> Technical Groups </a> </li> <li> <a class="d-inline-block pb-1" href="/get_involved/volunteer/"> Volunteer </a> </li> </ul> </div> </div> </li> </ul> <button aria-controls="mobileNavMenu" aria-expanded="false" class="btn p-1 text-white align-self-center d-block d-xl-none" id="mobileMainNavToggle" type="button" data-target="#mobileNavMenu"> <span class="sr-only">Menu</span> <span class="fa-solid fa-bars h5" aria-hidden="true"></span> </button> </nav> </div> </div> </header> <main id="content"> <div class="navigation bg-light border-bottom border-secondary mb-0"> <nav class="container navbar navbar-expand-lg navbar-dark p-1 p-lg-0"> <button class="navbar-toggler text-black" type="button" data-toggle="collapse" data-target="#collapseExample" aria-expanded="false" aria-controls="collapseExample"> <span class="fas fa-bars"></span> <span>SECTION NAVIGATION</span> </button> <div id="collapseExample" class="collapse navbar-collapse"> <ul class="navbar-nav d-flex justify-content-between align-items-center flex-fill"> <li class="nav-item"> <a class="nav-link p-1 text-wrap text-uppercase text-decoration-none text-black" href="/history/milestones/">Milestone Events & Celebrations</a> </li> <li class="nav-item"> <a class="nav-link p-1 text-wrap text-uppercase text-decoration-none text-black" href="/history/optica_timeline/">Optica Timeline</a> </li> <li class="nav-item"> <a class="nav-link p-1 text-wrap text-uppercase text-decoration-none text-black" href="/history/biographies/">Biographies & Memoirs</a> </li> <li class="nav-item"> <a class="nav-link p-1 text-wrap text-uppercase text-decoration-none text-black" href="/history/multimedia/">Multimedia</a> </li> <li class="nav-item"> <a class="nav-link p-1 text-wrap text-uppercase text-decoration-none text-black" href="/history/optica_nobel_laureates/">Optica Nobel Laureates</a> </li> <li class="nav-item"> <a class="nav-link p-1 text-wrap text-uppercase text-decoration-none text-black" href="/history/amplify_black_voices_in_optics/">Amplify Black Voices in Optics</a> </li> <li class="nav-item"> <a class="nav-link p-1 text-wrap text-uppercase text-decoration-none text-black" href="/history/faces_of_optica/">Faces of Optica</a> </li> </ul> </div> </nav> </div> <section class="page-title "> <div class="page-title__breadcrumb mb-0"> <div class="container"> <a class="text-capitalize" href="/home/">Home</a> <span class="divider">></span> <a class="text-capitalize" href="/history/">History</a> </div> </div> <div class="container py-1"> <h1 class="pt-2 pb-1">Seibert Q. Duntley</h1> </div> </section> <div class="container py-3 biography"> <div class="row"> <div class="col-md-12"> <h4>Seibert Q. Duntley</h4> <div class="row"> <div class="col-xs-12 col-md-3"> <img src="https://optica-org-web-afd-f9abf4byhbacgfgk.z02.azurefd.net/optica/media/osa.history/imagegallery/a-e/du/duntley_sq.jpg?ext=.jpg" alt="Photo of Seibert Q. Duntley" aria-label="Photo of Seibert Q. Duntley" class="img-fluid"/> <div class="hide-if-no-data mt-2"> <h5>Awards & Distinctions</h5> <ul> <li> <a href="/awards_and_grants/fellow_members/">Fellow</a> - 1959 </li> <li> <a href="/Awards_and_Grants/Awards/Award_Description/ivesquinn">Frederic Ives Medal/Jarus W. Quinn Prize</a> - 1961 </li> </ul> </div> </div> <div class="col-xs-12 col-md-9"> <div> <p><strong>OSA Fellow Seibert Quimby Duntley</strong> was born in Bushnell, Illinois on October 2, 1911. He received an SB in physics from Massachusetts Institute of Technology in 1933, an MS from the California Institute of Technology in 1935, and an ScD in physics from MIT in 1939.</p> <p>Duntley's primary interest was in applied physics, particularly the optics of turbid media. He started MIT’s Visibility Laboratory in 1939. It was conceived by Duntley and MIT physics chair Arthur C. Hardy. The lab was focused on applying optics to such problems as camouflage, misdirection of aerial bombardment, target location, and visibility of submerged objects at sea. In 1952, after some negotiation, the laboratory would be moved from MIT to the Scripps Institution of Oceanography in San Diego, California. The US Navy Bureau of Ships paid for the relocation.</p> <p>Once the move was completed, major projects at the laboratory centered on the transmission of visible light through the atmosphere and water and related problems of visibility and recognition. Other studies which Duntley initiated or to which he made major contributions included the development of specialized photoelectric scanning and detection systems, the mathematics and physical implementation of digital image processing, and the remote sensing of ocean properties from aircraft and space. He also performed experiments with the world’s first underwater laser.</p> <p>When Duntley resigned as director of the Visibility Laboratory in 1975 and then retired in 1977, he had written over 100 papers in physics and optics on topics that ranged from spectrophotometry of living human skin to remote sensing. He received international recognition for his work in what became known as environmental optics.</p> <p>Duntley was an active member of many professional associations, particularly the Optical Society and Sigma Xi. He was Chairman of the Representatives of the Optical Society on the US National Committee of the International Commission on Illumination. During the 1960s he was a member of the Armed Forces-National Research Council Committee on Vision. He was a participant in the 1971 JASON Laser Summer Study.</p> <p>He received many awards for his research including the Army-Navy Certificate of Appreciation and OSA’s Frederic Ives Medal.</p> <p>Seibert Q. Duntley died 22 October 1999.</p> </div> <ul class="list-unstyled cta-list"> </ul> </div> </div> </div> </div> <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "VideoObject", "name": "Luis Fernando Calderari appreciates the networking opportunites at the FiO Conference--Optica Stories ", "description": "Optica Student Member Luis Fernando Calderari, National University of Tucuman, Argentina, enjoyed meeting other community members at FiO--Optica Stories ", "thumbnailUrl": "https://cf-images.us-east-1.prod.boltdns.net/v1/jit/76009408001/64d881c6-aed7-4bb5-8b22-df28708af273/main/1280x720/23s392ms/match/image.jpg", "uploadDate": "2023-10-30T23:15:25.3270000", "contentUrl": "", "embedUrl": "https://oembed.brightcove.com/?format=json&maxwidth=480&maxheight=270&url=%2F%2Fplayers.brightcove.net%2F76009408001%2F352b1877-07eb-48fd-be2e-cbb5e8b75f31_default%2Findex.html%3FvideoId%3D6340182101112" } </script> <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "VideoObject", "name": "Luis Fernando Calderari talks about his student chapter--Optica Stories ", "description": "Optica Student Member Luis Fernando Calderari, National University of Tucuman, Argentina, discusses some of the outreach his Student Chapter does--Optica Stories ", "thumbnailUrl": "https://cf-images.us-east-1.prod.boltdns.net/v1/static/76009408001/d2dad6e2-a58c-4bd4-a02e-3e024badf831/1b110dda-5fa7-46ef-b644-0b48e744e693/1280x720/match/image.jpg", "uploadDate": "2023-10-30T20:21:30.0930000", "contentUrl": "", "embedUrl": "https://oembed.brightcove.com/?format=json&maxwidth=480&maxheight=270&url=%2F%2Fplayers.brightcove.net%2F76009408001%2F352b1877-07eb-48fd-be2e-cbb5e8b75f31_default%2Findex.html%3FvideoId%3D6340171124112" } </script> <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "VideoObject", "name": "Meet Optica Student Member Luis Fernando Calderari--Optica Stories", "description": "Optica Student Member Luis Fernando Calderari, National University of Tucuman, Argentina, is working on the assessment of the quality of vision--Optica Stories", "thumbnailUrl": "https://cf-images.us-east-1.prod.boltdns.net/v1/jit/76009408001/1a55dc84-4013-4e48-a7c6-15599390fbbd/main/1280x720/10s912ms/match/image.jpg", "uploadDate": "2023-03-31T15:09:09.1750000", "contentUrl": "", "embedUrl": "https://oembed.brightcove.com/?format=json&maxwidth=480&maxheight=270&url=%2F%2Fplayers.brightcove.net%2F76009408001%2F352b1877-07eb-48fd-be2e-cbb5e8b75f31_default%2Findex.html%3FvideoId%3D6323723336112" } </script> <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "VideoObject", "name": "Luis Fernando Calderari talks about attending Optica's Student Leadership Conference--Optica Stories", "description": "Optica Student Member Luis Fernando Calderari, National University of Tucuman, Argentina, shares some of what he learned at Optica's Student Leadership Conference--Optica Stories", "thumbnailUrl": "https://cf-images.us-east-1.prod.boltdns.net/v1/static/76009408001/5c963e49-2fd2-4e5a-a253-6619b86437e5/638aef5e-6b89-4d35-9c85-fd6227ca73e2/1280x720/match/image.jpg", "uploadDate": "2023-10-30T20:21:30.1550000", "contentUrl": "", "embedUrl": "https://oembed.brightcove.com/?format=json&maxwidth=480&maxheight=270&url=%2F%2Fplayers.brightcove.net%2F76009408001%2F352b1877-07eb-48fd-be2e-cbb5e8b75f31_default%2Findex.html%3FvideoId%3D6340170656112" } </script> <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "VideoObject", "name": "Meet 2020 OSA Ambassador Christian Reimer, HyperLight Corp.", "description": "Hear Christian talk about his transition from academic research to working at a startup.", "thumbnailUrl": "https://cf-images.us-east-1.prod.boltdns.net/v1/static/76009408001/501ec864-19c9-444c-8441-42708f415078/a09d0aec-ff61-4036-889b-bac5eee2e6c7/1280x720/match/image.jpg", "uploadDate": "2020-07-09T21:28:21.6460000", "contentUrl": "", "embedUrl": "https://oembed.brightcove.com/?format=json&maxwidth=480&maxheight=270&url=%2F%2Fplayers.brightcove.net%2F76009408001%2F352b1877-07eb-48fd-be2e-cbb5e8b75f31_default%2Findex.html%3FvideoId%3D6170545140001" } </script> <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "VideoObject", "name": "Meet 2020 OSA Ambassador Christian Reimer, HyperLight Corp. - Clip", "description": "Hear Christian talk about his transition from academic research to working at a startup.", "thumbnailUrl": "https://cf-images.us-east-1.prod.boltdns.net/v1/jit/76009408001/0cbd9d1a-8bd5-4349-947e-1e80937fb626/main/1280x720/20s448ms/match/image.jpg", "uploadDate": "2020-07-13T21:20:04.5750000", "contentUrl": "", "embedUrl": "https://oembed.brightcove.com/?format=json&maxwidth=480&maxheight=270&url=%2F%2Fplayers.brightcove.net%2F76009408001%2F352b1877-07eb-48fd-be2e-cbb5e8b75f31_default%2Findex.html%3FvideoId%3D6171342962001" } </script> <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "VideoObject", "name": "In 2015, Christian Reimer talked about the unique opportunities he had as a student at INRS-EMT--OSA Stories", "description": "Christian shares what he liked most about the institute where he worked--OSA Stories", "thumbnailUrl": "https://cf-images.us-east-1.prod.boltdns.net/v1/static/76009408001/e82cdf01-c804-4c23-a5a7-98de4ece8c43/0a049dcb-3d2b-4060-929c-f4da8cc16730/1280x720/match/image.jpg", "uploadDate": "2016-05-31T14:18:32.7420000", "contentUrl": "", "embedUrl": "https://oembed.brightcove.com/?format=json&maxwidth=480&maxheight=270&url=%2F%2Fplayers.brightcove.net%2F76009408001%2F352b1877-07eb-48fd-be2e-cbb5e8b75f31_default%2Findex.html%3FvideoId%3D4920602364001" } </script> <h5>Multimedia</h5> <div data-experience="5ecffb75b12d440025e00b6d" data-video-ids="6340182101112,6340171124112,6323723336112,6340170656112,6170545140001,6171342962001,4920602364001"></div> <script src="https://players.brightcove.net/76009408001/experience_5ecffb75b12d440025e00b6d/live.js"></script> <p class="pull-right"> <small> <span>Document Created: 26 July 2023</span> <br/> <span>Last Updated: 21 November 2024</span> </small> </p> </div> </main> <footer class="footer bg-black pb-3"> <div class="container py-2"> <div class="row"> <div class="col-md-4 py-1 py-lg-2"> <svg class="my-2" viewBox="0 0 778.66 208.72" fill="currentColor" style="max-width: 255px;"> <path d="M6.94,192.36l-2.84,8H0l9.83-27.82h5.11l10.24,27.82h-4.38l-2.94-8H6.94ZM16.85,188.86c-2.52-7-3.94-10.9-4.56-13.09h0c-.68,2.43-2.26,7.07-4.3,13.09h8.86Z" /> <path d="M46.09,170.97v29.37h-3.78c-.11-.91-.17-1.82-.19-2.74-1,2-3,3.22-6.3,3.22-5.22,0-8.45-4.23-8.45-10.47s3.47-10.88,9.14-10.88c3.48,0,5.08,1.37,5.61,2.47v-11l3.97.03ZM31.48,190.23c0,4.74,2.19,7.31,5.3,7.31,4.6,0,5.53-3.47,5.53-7.64s-.86-7.15-5.28-7.15c-3.47,0-5.55,2.75-5.55,7.48Z" /> <path d="M53.8,179.95c2.59,8.06,4.52,14.26,5.1,16.78h0c.51-2.48,2.65-8.59,5.46-16.78h4l-7.42,20.39h-4.27l-7.08-20.39h4.21Z" /> <path d="M86.73,195.73c-.01,1.54.08,3.08.28,4.61h-3.76c-.21-.83-.32-1.68-.32-2.54-.72,1.32-2.3,3-6.19,3-4.83,0-6.89-3.15-6.89-6.26,0-4.57,3.61-6.67,9.65-6.67h3.37v-1.64c0-1.73-.56-3.77-4.15-3.77-3.2,0-3.77,1.55-4.12,3.12h-3.79c.28-3,2.12-6.15,8-6.13,5.08,0,7.88,2.07,7.88,6.75l.04,9.53ZM82.94,190.53h-3.1c-3.94,0-5.94,1.1-5.94,3.8,0,2,1.35,3.48,3.77,3.48,4.65,0,5.27-3.15,5.27-6.65v-.63Z" /> <path d="M92.62,185.09c0-1.77,0-3.58-.05-5.14h3.82c.1.58.16,2.59.16,3.2.79-1.66,2.45-3.68,6.32-3.68s6.8,2.42,6.8,7.78v13.09h-3.93v-12.6c0-2.93-1.12-4.93-4.11-4.93-3.57,0-5.08,2.62-5.08,6.62v10.91h-3.93v-15.25Z" /> <path d="M131.87,194.03c-.84,3.49-3.22,6.79-8.58,6.79-5.75,0-9.19-4.11-9.19-10.56,0-5.81,3.35-10.79,9.45-10.79s8.08,4.33,8.32,6.9h-3.93c-.31-2.21-2.27-3.81-4.5-3.67-3.41,0-5.34,2.93-5.34,7.43s1.9,7.48,5.23,7.48c2.43,0,3.83-1.32,4.6-3.58h3.94Z" /> <path d="M136.26,170.97h3.93v4.52h-3.93v-4.52ZM136.26,179.97h3.93v20.39h-3.93v-20.39Z" /> <path d="M146.05,185.09v-5.14h3.82c.1.58.15,2.59.15,3.2.79-1.66,2.45-3.68,6.32-3.68s6.8,2.42,6.8,7.78v13.09h-3.93v-12.6c0-2.93-1.12-4.93-4.11-4.93-3.57,0-5.08,2.62-5.08,6.62v10.91h-3.93l-.04-15.25Z" /> <path d="M186.04,198.38c0,6.53-2.64,10.34-9.51,10.34-6.42,0-8.24-3.6-8.58-6.28h4c.56,2.07,2.21,3.21,4.74,3.21,4.45,0,5.51-2.8,5.51-7.36v-1.52c-1.08,2.19-2.92,3.44-6.26,3.44-5.08,0-8.43-4.15-8.43-10,0-6.6,3.86-10.71,8.82-10.71,3.82,0,5.43,1.79,5.87,3.07,0-.85.13-2.18.17-2.59h3.72c0,1.3-.06,3.92-.06,5.88v12.52ZM171.59,190.01c0,4.15,2.14,6.9,5.31,6.9,4.21,0,5.42-2.83,5.42-7.15s-1.09-7-5.3-7c-3.51-.01-5.43,2.9-5.43,7.25Z" /> <path d="M227.1,186.29c0,7.66-4.36,14.45-13.17,14.45-8.3,0-12.87-6.33-12.87-14.31s4.74-14.31,13.2-14.31c7.89,0,12.84,5.85,12.84,14.17ZM205.37,186.29c0,5.9,2.95,10.95,8.73,10.95,6.25,0,8.69-5.16,8.69-10.92s-2.77-10.74-8.7-10.74-8.72,4.89-8.72,10.73v-.02Z" /> <path d="M235.94,197.96v10.36h-3.91v-28.41h3.82c.1,1.02.14,2.05.13,3.08,1.3-2.35,3.84-3.74,6.52-3.56,4.69,0,8.14,3.93,8.14,10.15,0,7.27-3.93,11.2-8.87,11.2-3.3.04-4.98-1.28-5.83-2.82ZM246.57,189.78c0-4.21-1.88-7-5.21-7-4,0-5.59,2.56-5.59,7.35s1.3,7.44,5.33,7.44c3.54-.01,5.43-2.94,5.43-7.79h.04Z" /> <path d="M252.49,179.95h3.45v-5.92h3.93v5.92h4.4v3.14h-4.4v11.58c0,1.9.48,2.83,2.29,2.83.57.01,1.13-.04,1.69-.15v2.88c-1.04.3-2.12.43-3.2.38-3.33,0-4.71-1.74-4.71-5.16v-12.36h-3.45v-3.14Z" /> <path d="M267.88,170.97h3.93v4.52h-3.93v-4.52ZM267.88,179.97h3.93v20.39h-3.93v-20.39Z" /> <path d="M294.05,194.03c-.84,3.49-3.21,6.79-8.57,6.79-5.76,0-9.2-4.11-9.2-10.56,0-5.81,3.35-10.79,9.45-10.79s8.08,4.33,8.32,6.9h-3.88c-.32-2.21-2.28-3.81-4.51-3.67-3.41,0-5.34,2.93-5.34,7.43s1.9,7.48,5.23,7.48c2.43,0,3.83-1.32,4.6-3.58h3.9Z" /> <path d="M300.66,194.45c.56,2.11,2.14,3.35,4.78,3.35,2.82,0,3.92-1.19,3.92-2.92s-.93-2.61-4.63-3.51c-6-1.46-7.18-3.29-7.18-6.08s2.12-5.82,7.54-5.82,7.58,3.11,7.83,5.93h-3.79c-.27-1.21-1.17-3-4.21-3-2.67,0-3.47,1.27-3.47,2.52,0,1.43.8,2.13,4.45,3,6.31,1.49,7.49,3.61,7.49,6.63,0,3.53-2.78,6.23-8.08,6.23s-8-2.73-8.55-6.37l3.9.04Z" /> <path d="M343.32,195.73c-.01,1.54.08,3.08.28,4.61h-3.76c-.21-.83-.32-1.68-.32-2.54-.72,1.32-2.3,3-6.19,3-4.83,0-6.89-3.15-6.89-6.26,0-4.57,3.61-6.67,9.65-6.67h3.37v-1.64c0-1.73-.56-3.77-4.15-3.77-3.2,0-3.77,1.55-4.12,3.12h-3.79c.28-3,2.12-6.15,8-6.13,5.08,0,7.88,2.07,7.88,6.75l.04,9.53ZM339.48,190.53h-3.1c-3.94,0-5.94,1.1-5.94,3.8,0,2,1.35,3.48,3.77,3.48,4.65,0,5.27-3.15,5.27-6.65v-.63Z" /> <path d="M349.21,185.09v-5.14h3.82c.09.58.15,2.59.15,3.2.79-1.66,2.45-3.68,6.32-3.68s6.8,2.42,6.8,7.78v13.09h-3.93v-12.6c0-2.93-1.12-4.93-4.11-4.93-3.57,0-5.08,2.62-5.08,6.62v10.91h-3.93l-.04-15.25Z" /> <path d="M389.36,170.97v29.37h-3.78c-.11-.91-.18-1.82-.19-2.74-1,2-3,3.22-6.3,3.22-5.22,0-8.46-4.23-8.46-10.47s3.48-10.88,9.15-10.88c3.48,0,5.08,1.37,5.61,2.47v-11l3.97.03ZM374.75,190.23c0,4.74,2.18,7.31,5.3,7.31,4.6,0,5.53-3.47,5.53-7.64s-.86-7.15-5.28-7.15c-3.47,0-5.55,2.75-5.55,7.48Z" /> <path d="M405.94,172.52h10.7c5.51,0,9.27,3.08,9.27,8.19,0,5.54-4,8.4-9.47,8.4h-6.39v11.23h-4.11v-27.82ZM410.09,185.68h6.09c3.62,0,5.54-1.71,5.54-4.87s-2.27-4.87-5.39-4.87h-6.24v9.74Z" /> <path d="M434.03,170.97v11.87c1.28-2.22,3.7-3.52,6.26-3.37,3.38,0,6.86,1.88,6.86,7.84v13h-3.91v-12.36c0-3.31-1.37-5.14-4.22-5.14-3.56,0-5,2.41-5,6.45v11.08h-3.93v-29.37h3.94Z" /> <path d="M470.82,190.11c0,5.93-3.44,10.71-9.71,10.71-5.94,0-9.5-4.52-9.5-10.64s3.53-10.71,9.73-10.71c5.73,0,9.48,4.24,9.48,10.64ZM455.64,190.11c0,4.36,2.13,7.44,5.61,7.44s5.53-2.94,5.53-7.43-2-7.46-5.61-7.46-5.53,2.9-5.53,7.49v-.04Z" /> <path d="M472.7,179.95h3.46v-5.92h3.93v5.92h4.4v3.14h-4.4v11.58c0,1.9.48,2.83,2.29,2.83.57.01,1.13-.04,1.69-.15v2.88c-1.04.3-2.12.43-3.2.38-3.33,0-4.71-1.74-4.71-5.16v-12.36h-3.46v-3.14Z" /> <path d="M505.78,190.11c0,5.93-3.43,10.71-9.71,10.71-5.93,0-9.5-4.52-9.5-10.64s3.53-10.71,9.74-10.71c5.73,0,9.47,4.24,9.47,10.64ZM490.61,190.11c0,4.36,2.13,7.44,5.61,7.44s5.53-2.94,5.53-7.43-2-7.46-5.61-7.46-5.53,2.9-5.53,7.49v-.04Z" /> <path d="M510.23,185.09v-5.14h3.82c.1.58.16,2.59.16,3.2.79-1.66,2.45-3.68,6.32-3.68s6.8,2.42,6.8,7.78v13.09h-3.93v-12.6c0-2.93-1.12-4.93-4.11-4.93-3.57,0-5.08,2.62-5.08,6.62v10.91h-3.93l-.05-15.25Z" /> <path d="M533.08,170.97h3.93v4.52h-3.93v-4.52ZM533.08,179.97h3.93v20.39h-3.93v-20.39Z" /> <path d="M559.25,194.03c-.84,3.49-3.21,6.79-8.57,6.79-5.76,0-9.19-4.11-9.19-10.56,0-5.81,3.34-10.79,9.45-10.79s8.08,4.33,8.31,6.9h-3.88c-.32-2.21-2.28-3.81-4.51-3.67-3.41,0-5.34,2.93-5.34,7.43s1.9,7.48,5.23,7.48c2.43,0,3.83-1.32,4.6-3.58h3.9Z" /> <path d="M565.86,194.45c.56,2.11,2.15,3.35,4.78,3.35,2.82,0,3.92-1.19,3.92-2.92s-.93-2.61-4.63-3.51c-6-1.46-7.18-3.29-7.18-6.08s2.12-5.82,7.54-5.82,7.58,3.11,7.83,5.93h-3.79c-.27-1.21-1.17-3-4.21-3-2.67,0-3.47,1.27-3.47,2.52,0,1.43.8,2.13,4.45,3,6.31,1.49,7.49,3.61,7.49,6.63,0,3.53-2.78,6.23-8.08,6.23s-8-2.73-8.55-6.37l3.9.04Z" /> <path d="M598.33,200.34l-7.39-27.82h4.37c2.25,9.81,4.91,20.21,5.39,23.37h0c.79-3.88,4.4-16.34,6.18-23.37h3.93c1.62,6,5.24,19.54,5.91,23.2h0c.9-5.06,4.57-17.75,6-23.2h4.06l-8,27.82h-4.39c-1.64-6.35-5-18.81-5.74-22.41h0c-.87,4.3-4.25,16.17-6,22.41h-4.32Z" /> <path d="M646.65,190.11c0,5.93-3.43,10.71-9.7,10.71-5.94,0-9.5-4.52-9.5-10.64s3.52-10.71,9.73-10.71c5.76,0,9.47,4.24,9.47,10.64ZM631.48,190.11c0,4.36,2.13,7.44,5.61,7.44s5.53-2.94,5.53-7.43-2-7.46-5.61-7.46-5.53,2.9-5.53,7.49v-.04Z" /> <path d="M651.08,185.49v-5.54h3.86c.06.55.12,2.23.12,4,1.08-2.8,3.81-4.62,6.81-4.53v3.87c-4.17.08-6.81,2.06-6.81,7.3v9.7h-3.93l-.05-14.8Z" /> <path d="M665.42,200.34v-29.37h3.93v29.37h-3.93Z" /> <path d="M692.49,170.97v29.37h-3.78c-.11-.91-.17-1.82-.19-2.74-1,2-3,3.22-6.29,3.22-5.23,0-8.46-4.23-8.46-10.47s3.47-10.88,9.14-10.88c3.48,0,5.08,1.37,5.61,2.47v-11l3.97.03ZM677.88,190.23c0,4.74,2.19,7.31,5.3,7.31,4.6,0,5.53-3.47,5.53-7.64s-.86-7.15-5.27-7.15c-3.5,0-5.56,2.75-5.56,7.48Z" /> <path d="M700.19,179.95c2.4,9.3,3.76,14.61,4.12,16.79h.06c.37-2,1.65-6.69,4.46-16.79h3.8c3,11.25,3.92,14.52,4.24,16.43h0c.49-2.17,1.27-5.23,4.3-16.43h4l-6.23,20.39h-4.24c-1.93-7.49-3.69-13.83-4.13-16.13h0c-.36,2.29-2.05,8.19-4.25,16.13h-4.38l-5.89-20.39h4.14Z" /> <path d="M728.94,170.97h3.94v4.52h-3.94v-4.52ZM728.94,179.97h3.94v20.39h-3.94v-20.39Z" /> <path d="M755.94,170.97v29.37h-3.7c-.11-.91-.18-1.82-.2-2.74-1,2-3,3.22-6.29,3.22-5.22,0-8.46-4.23-8.46-10.47s3.48-10.88,9.15-10.88c3.48,0,5.08,1.37,5.6,2.47v-11l3.9.03ZM741.36,190.23c0,4.74,2.19,7.31,5.31,7.31,4.6,0,5.53-3.47,5.53-7.64s-.86-7.15-5.28-7.15c-3.47,0-5.56,2.75-5.56,7.48Z" /> <path d="M764.36,190.9c0,3.83,2,6.69,5.29,6.69,3,0,4-1.52,4.66-3h4c-.79,2.59-3,6.19-8.73,6.19-6.47,0-9.14-5.17-9.14-10.44,0-6.13,3.1-10.91,9.36-10.91,6.66,0,8.86,5.24,8.86,9.73.01.57,0,1.13-.06,1.7l-14.24.04ZM774.64,188.23c0-3.16-1.59-5.72-4.93-5.72s-4.9,2.37-5.23,5.72h10.16Z" /> <path d="M134.07,67.55c.03,37.24-30.14,67.45-67.38,67.48-33.29.02-61.61-24.24-66.69-57.14h20c5.71,25.73,31.21,41.96,56.94,36.25s41.96-31.21,36.25-56.94S81.98,15.24,56.25,20.95c-17.7,3.93-31.64,17.54-35.99,35.14H.16C6.49,19.39,41.37-5.23,78.06,1.1c32.35,5.58,55.98,33.63,55.98,66.46h.03ZM442.64,132.79h20.58V2.31h-20.58v130.48ZM229.54,2.31h-65.94v130.48h20.58V21.47h41.68c18.58,0,28,6.19,28,18.89,0,14.71-15.22,18.36-28,18.36h-19.92v19.17h24.09c12.65,0,23.55-3.25,31.53-9.39,8.62-6.63,13.18-16.74,13.18-28.14.04-22.91-18.14-38.05-45.2-38.05ZM342.35,132.79h20.59V38.12h-20.59v94.67ZM295.14,2.31h115v19.16h-115V2.31ZM715.49,2.31h-18.93l-63.12,130.47h22.21l50.38-104.12,23.91,49.23h-26l-9.24,19.17h44.46l17.23,35.72h22.21L715.49,2.31ZM608.49,82.45c-8.23,25.05-35.21,38.68-60.26,30.44s-38.68-35.21-30.44-60.26c8.23-25.05,35.21-38.68,60.26-30.44,13.82,4.54,24.81,15.14,29.86,28.78h20.59c-9.14-36.15-45.86-58.04-82-48.9-36.15,9.14-58.04,45.86-48.9,82,9.14,36.15,45.86,58.04,82,48.9,24.62-6.23,43.67-25.75,49.29-50.52h-20.4Z" /> </svg> <p class="small">Copyright 漏 2024 Optica</p> <p class="small">www.optica.org</p> <ul class="list-unstyled list-inline"> </ul> </div> <nav class="col-md-3 py-1 py-lg-2"> <h6 class="small text-uppercase font-weight-bold mb-2">Optica.org</h6> <ul class="small list-unstyled"> <li> <a class="d-inline-block pb-1" href="/publications/" > Publications </a> </li> <li> <a class="d-inline-block pb-1" href="/events/" > Events </a> </li> <li> <a class="d-inline-block pb-1" href="/membership/" > Membership </a> </li> <li> <a class="d-inline-block pb-1" href="/industry/" > Industry Resources </a> </li> </ul> </nav> <nav class="col-md-3 py-1 py-lg-2"> <h6 class="small text-uppercase font-weight-bold mb-2">Information</h6> <ul class="small list-unstyled"> <li> <a class="d-inline-block pb-1" href="/help/" > Help </a> </li> <li> <a class="d-inline-block pb-1" href="/about/contact/" > Contact Us </a> </li> <li> <a class="d-inline-block pb-1" href="/about/policies/" > Policies & Legal </a> </li> </ul> </nav> <nav class="col-md-2 py-1 py-lg-2"> <h6 class="small text-uppercase font-weight-bold mb-2">Helpful Links</h6> <ul class="small list-unstyled"> <li> <a class="d-inline-block pb-1" href="https://account.osa.org/eweb/dynamicpage.aspx?webcode=member&mbr_src_code=OSAWEBS&utm_source=osaHome&utm_campaign=StudentMembership_SignUpLink&utm_medium=footer&utm_content=footerLink" target='_blank' > Join Optica or Renew </a> </li> <li> <a class="d-inline-block pb-1" href="https://opticastore.org/" target='_blank' > Store </a> </li> <li> <a class="d-inline-block pb-1" href="/events/" > Find an Event </a> </li> </ul> </nav> </div> </div> </footer> <div class="mobile-nav" id="mobileNavMenu" data-keyboard="false" data-backdrop="false" tabindex="-1" aria-labelledby="mobileNavMenuLabel" aria-hidden="true"> <div class="container p-0"> <div id="mobileSearchWrapper" class="p-1 w-100"> <div class="mobile-nav__search" id="mobileSearchForm"> <input type="text" id="siteSearchMobile" placeholder="SEARCH HERE" class="mobile-nav__search-input"/> <button type="submit" id="siteSearchMobileButton" class="mobile-nav__search-submit"> <span class="sr-only">Search</span> <span class="fa-regular fa-magnifying-glass h5" aria-hidden="true"></span> </button> </div> </div> <ul class="mobile-nav__list"> <li class="mobile-nav__item"> <a class="mobile-nav__link js-mobile-shelf w-100 d-flex justify-content-between align-items-center" type="button" href="#" data-target="#mobileNavMenu242" aria-controls="#mobileNavMenu242"> <span>Events</span> <span class="fa fa-chevron-right"></span> </a> <div id=mobileNavMenu242 class="mobile-nav__sub-menu p-1" tabindex="-1" role="dialog"> <a href="#" class="mobile-nav__sub-menu-back" aria-label="Back"> <span class="fa fa-chevron-left mr-1"></span>Back </a> <h5 class="text-uppercase text-white"> Events </h5> <ul class="mobile-nav__list pl-1"> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/events/"> Overview </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/events/meeting_opportunities/"> Services </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/events/meeting_archives/"> Archives </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/events/"> Event Calendar </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/events/speakers/"> Speaker Resources </a> </li> </ul> </div> </li> <li class="mobile-nav__item"> <a class="mobile-nav__link js-mobile-shelf w-100 d-flex justify-content-between align-items-center" type="button" href="#" data-target="#mobileNavMenu241" aria-controls="#mobileNavMenu241"> <span>Membership</span> <span class="fa fa-chevron-right"></span> </a> <div id=mobileNavMenu241 class="mobile-nav__sub-menu p-1" tabindex="-1" role="dialog"> <a href="#" class="mobile-nav__sub-menu-back" aria-label="Back"> <span class="fa fa-chevron-left mr-1"></span>Back </a> <h5 class="text-uppercase text-white"> Membership </h5> <ul class="mobile-nav__list pl-1"> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/membership/"> Overview </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/membership/join/individual/"> Individual </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/membership/join/corporate/"> Corporate </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/membership/distinguished_honorary/"> Distinguished & Honorary </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/membership/member_programs/"> Member Programs </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/membership/member_resources/"> Member Resources </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/membership/join/"> Join Optica </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/membership/benefits_services/"> Benefits & Services </a> </li> </ul> </div> </li> <li class="mobile-nav__item"> <a class="mobile-nav__link w-100 d-flex justify-content-between align-items-center" href="/publications/"> Publications </a> </li> <li class="mobile-nav__item"> <a class="mobile-nav__link js-mobile-shelf w-100 d-flex justify-content-between align-items-center" type="button" href="#" data-target="#mobileNavMenu243" aria-controls="#mobileNavMenu243"> <span>Industry Resources</span> <span class="fa fa-chevron-right"></span> </a> <div id=mobileNavMenu243 class="mobile-nav__sub-menu p-1" tabindex="-1" role="dialog"> <a href="#" class="mobile-nav__sub-menu-back" aria-label="Back"> <span class="fa fa-chevron-left mr-1"></span>Back </a> <h5 class="text-uppercase text-white"> Industry Resources </h5> <ul class="mobile-nav__list pl-1"> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/industry/"> Overview </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/industry/corporate_membership/"> Corporate Membership </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/industry/industry_events/"> Industry Events </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/industry/online_industry_library/"> Market Intelligence </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/industry/exhibitions/"> Marketing </a> </li> </ul> </div> </li> <li class="mobile-nav__item"> <a class="mobile-nav__link js-mobile-shelf w-100 d-flex justify-content-between align-items-center" type="button" href="#" data-target="#mobileNavMenu246" aria-controls="#mobileNavMenu246"> <span>Community</span> <span class="fa fa-chevron-right"></span> </a> <div id=mobileNavMenu246 class="mobile-nav__sub-menu p-1" tabindex="-1" role="dialog"> <a href="#" class="mobile-nav__sub-menu-back" aria-label="Back"> <span class="fa fa-chevron-left mr-1"></span>Back </a> <h5 class="text-uppercase text-white"> Community </h5> <ul class="mobile-nav__list pl-1"> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/"> Overview </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/awards_and_honors/"> Awards & Honors </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/diversity_inclusion/"> Diversity, Equity and Inclusion </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/earlycareer/"> Early Career </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/education_outreach/"> Education Outreach </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/public_policy/"> Global Policy & Affairs </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/local_section/"> Local Sections </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/students/"> Students </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/technical_groups/"> Technical Groups </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/get_involved/volunteer/"> Volunteer </a> </li> </ul> </div> </li> </ul> <ul class="mobile-nav__list"> <li class="mobile-nav__item"> <a class="mobile-nav__link mobile-nav__link--secondary js-mobile-shelf w-100 d-flex justify-content-between align-items-center" type="button" href="#" data-target="#mobileNavMenu245" aria-controls="#mobileNavMenu245"> <span>Foundation</span> <span class="fa fa-chevron-right"></span> </a> <div id=mobileNavMenu245 class="mobile-nav__sub-menu p-1" tabindex="-1" role="dialog"> <a href="#" class="mobile-nav__sub-menu-back" aria-label="Back"> <span class="fa fa-chevron-left mr-1"></span>Back </a> <h5 class="text-uppercase text-white"> Foundation </h5> <ul class="mobile-nav__list pl-1"> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/foundation/"> Overview </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/foundation/about/"> About </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/foundation/giving/"> Donate </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/foundation/opportunities/schools_training_programs/"> Schools & Training Programs </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/foundation/opportunities/"> Opportunities </a> </li> </ul> </div> </li> <li class="mobile-nav__item"> <a class="mobile-nav__link mobile-nav__link--secondary js-mobile-shelf w-100 d-flex justify-content-between align-items-center" type="button" href="#" data-target="#mobileNavMenu244" aria-controls="#mobileNavMenu244"> <span>Careers</span> <span class="fa fa-chevron-right"></span> </a> <div id=mobileNavMenu244 class="mobile-nav__sub-menu p-1" tabindex="-1" role="dialog"> <a href="#" class="mobile-nav__sub-menu-back" aria-label="Back"> <span class="fa fa-chevron-left mr-1"></span>Back </a> <h5 class="text-uppercase text-white"> Careers </h5> <ul class="mobile-nav__list pl-1"> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/careers/"> Explore Careers </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/careers/for_employers/"> For Employers </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/careers/professional_development/"> Professional Development </a> </li> </ul> </div> </li> <li class="mobile-nav__item"> <a class="mobile-nav__link mobile-nav__link--secondary js-mobile-shelf w-100 d-flex justify-content-between align-items-center" type="button" href="#" data-target="#mobileNavMenu247" aria-controls="#mobileNavMenu247"> <span>About</span> <span class="fa fa-chevron-right"></span> </a> <div id=mobileNavMenu247 class="mobile-nav__sub-menu p-1" tabindex="-1" role="dialog"> <a href="#" class="mobile-nav__sub-menu-back" aria-label="Back"> <span class="fa fa-chevron-left mr-1"></span>Back </a> <h5 class="text-uppercase text-white"> About </h5> <ul class="mobile-nav__list pl-1"> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/"> About Optica </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/leadership_and_volunteers/"> Leadership & Volunteers </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/optica_community/"> Optica Community </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/about_our_brand/"> About our Brand </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/strategy/"> Strategy </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/newsroom/"> Newsroom </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/what_is_optics/"> What is Optics </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/"> Living History </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/work_at_optica/"> Work at Optica </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/contact/"> Contact Us </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/about/policies/"> Policies </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/media_library/"> Video Library </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/milestones/"> Milestone Events & Celebrations </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/optica_timeline/"> Optica Timeline </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/biographies/"> Biographies & Memoirs </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/"> History of Optica </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/multimedia/"> Multimedia </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/optica_nobel_laureates/"> Optica Nobel Laureates </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/amplify_black_voices_in_optics/"> Amplify Black Voices in Optics </a> </li> <li class="mobile-nav__item"> <a class="js-mobile-submenu-link mb-2 w-100 d-flex justify-content-between align-items-center" href="/history/faces_of_optica/"> Faces of Optica </a> </li> </ul> </div> </li> </ul> <ul class="mobile-nav__list"> <li class="mobile-nav__item"> <a class="mobile-nav__link mobile-nav__link--secondary w-100 d-flex justify-content-between align-items-center" href="/account/login/?returnUrl=%2Fhistory%2Fbiographies%2Fbios%2Fseibert-q--duntley%2F"> Log In </a> <li class="mobile-nav__item"> </ul> <div class="d-flex justify-content-center bg-lighterblue w-100 mt-auto p-1"> <button aria-expanded="false" aria-haspopup="true" class="btn align-self-center" data-toggle="modal" data-target="#otherSitesModalMobile" id="sitesMenuButtonMobile"> <i class="fa-solid fa-grid-round mr-1"></i>Other Sites </button> <div id="otherSitesModalMobile" aria-labelledby="sitesMenuButtonMobile" tabindex="-1" aria-hidden="true" class="modal fade border-gray-200 p-0"> <div class="modal-dialog m-0 w-100 modal-dialog-othersites bg-lightblue"> <div class="modal-content container px-0 bg-transparent border-0"> <div class="modal-header border-0 px-lg-0 py-lg-2"> <h5 class="modal-title"> <span class="fa-solid fa-grid-round mr-1"></span> Other sites </h5> <button class="close" data-dismiss="modal" aria-label="close" type="button"> <span aria-hidden="true">×</span> </button> </div> <div class="modal-body px-lg-0 py-lg-2"> <ul class="app-menu"> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://awards.optica.org"> <span class="fa-regular fa-circle-right"></span> BEAM </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://www.cleoconference.org"> <span class="fa-regular fa-circle-right"></span> CLEO </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://www.frontiersinoptics.com"> <span class="fa-regular fa-circle-right"></span> FIO+LS </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://www.gemminitiative.org"> <span class="fa-regular fa-circle-right"></span> GEMM Initiative </a> </li> <li class="app-menu__item"> <a class="app-menu__link card--rounded" href="https://www.optica.org/history"> <span class="fa-regular fa-circle-right"></span> Living History </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://www.lightourfuture.org"> <span class="fa-regular fa-circle-right"></span> NPI </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://www.ofcconference.org"> <span class="fa-regular fa-circle-right"></span> OFC </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://www.optica-opn.org"> <span class="fa-regular fa-circle-right"></span> OPN </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://opg.optica.org"> <span class="fa-regular fa-circle-right"></span> Optica Publishing Group </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://www.opticastore.org"> <span class="fa-regular fa-circle-right"></span> Optica Store </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://www.optics4kids.org"> <span class="fa-regular fa-circle-right"></span> Optics 4 Kids </a> </li> <li class="app-menu__item"> <a target='_blank' class="app-menu__link card--rounded" href="https://prism.optica.org"> <span class="fa-regular fa-circle-right"></span> Prism </a> </li> </ul> </div> </div> </div> </div> </div> </div> </div></div> <script type="text/javascript"> WebFontConfig = { google: { families: ['Archivo:400,400italic,700,700italic:latin', 'Karla:400,400italic,700,700italic:latin'] } }; (function () { var wf = document.createElement('script'); wf.src = 'https://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js'; wf.type = 'text/javascript'; wf.async = 'true'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(wf, s); })(); </script> <script type="text/javascript">(function (w, d, u) { w.readyQ = []; w.bindReadyQ = []; function p(x, y) { if (x == "ready") { w.bindReadyQ.push(y); } else { w.readyQ.push(x); } }; var a = { ready: p, bind: p }; w.$ = w.jQuery = function (f) { if (f === d || f === u) { return a } else { p(f) } } })(window, document);</script> <script src="/osaorg/js/vendor/modernizr-2.6.1-respond-1.1.0.min.js?v=HOB5DSNVlN38S9Fr-eXwyC7AvZgERpLFIHJao5rdGYg"></script> <script src="https://cdn.jsdelivr.net/combine/npm/jquery@3.5.1/dist/jquery.slim.min.js,npm/popper.js@1.16.1,npm/bootstrap@4.5.0,npm/masonry-layout@4.2.2/dist/masonry.pkgd.min.js"></script> <script> var gaAcct = 'UA-1200622-1'; function downloadJSAtOnload() { var element = document.createElement("script"); element.src = "/osaorg/js/loadJS.js?v=1"; document.body.appendChild(element); } if (window.addEventListener) window.addEventListener("load", downloadJSAtOnload, false); else if (window.attachEvent) window.attachEvent("onload", downloadJSAtOnload); else window.onload = downloadJSAtOnload; </script> <script src="/_content/Kentico.Content.Web.Rcl/Scripts/jquery-3.5.1.js"></script> <script src="/_content/Kentico.Content.Web.Rcl/Scripts/jquery.unobtrusive-ajax.js"></script> <script src="/_content/Kentico.Content.Web.Rcl/Content/Bundles/Public/systemFormComponents.min.js"></script> <script type="module" src="/assets/js/main-ae073987.js?v=-PMcRq9VoaTvaJufF8ja_azii8eTF0b4dI0bhCdq-CI"></script> <img src="https://account.optica.org/eWeb/images/img_transparent.gif" style="display:none;" alt="Image for keeping the session alive"/> </body> </html>

CINXE.COM

Seibert Q. Duntley | Optica