{"id":2645,"date":"2021-07-26T19:05:49","date_gmt":"2021-07-26T10:05:49","guid":{"rendered":"https:\/\/carelab.info\/?p=2645"},"modified":"2021-08-24T00:50:55","modified_gmt":"2021-08-23T15:50:55","slug":"zhang-yans-paper-has-been-accepted-to-optics-letters","status":"publish","type":"post","link":"https:\/\/carelab.info\/en\/2021\/07\/26\/zhang-yans-paper-has-been-accepted-to-optics-letters\/","title":{"rendered":"Zhang Yan&#8217;s paper has been accepted to Optics Letters"},"content":{"rendered":"<p>Our D3 student Zhang Yan&#8217;s paper has been accepted to Optics Letters. His paper reports on a novel optical see-through wide field-of-view (approximately 100 degrees horizontal) AR displays that are capable of hard-edge occlusion by using paired conical reflectors and an LCoS. This is a collaborative research project with the University of Arizona.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1364\/OL.428714\">https:\/\/doi.org\/10.1364\/OL.428714<\/a><br \/>\n(The paper PDF is open access)<\/p>\n<ul>\n<li>Yan Zhang, Xiaodan Hu, Kiyoshi Kiyokawa, Naoya Isoyama, Nobuchika Sakata, and Hong Hua,<br \/>\n&#8220;Optical See-through Augmented Reality Displays with Wide Field of View and Hard-edge Occlusion by Using Paired Conical Reflectors&#8221;, Optics Letters, Vol. 46, Issue 17,\u00a0pp. 4208-4211 (2021).<\/li>\n<li>Abstract:<br \/>\nOptical see-through head-mounted displays (OSTHMDs) are actively developed in recent years. An appropriate method for mutual occlusion is essential to provide a decent user experience in many application scenarios of augmented reality (AR). However, existing mutual occlusion methods fail to work well with a large field of view (FOV). In this paper, we propose a double-parabolic-mirror (DPM) structure that renders hard-edge occlusion within a wide FOV. The parabolic mirror increases the numerical aperture of the system significantly, and the usage of paired parabolic mirrors eliminates most optical aberrations. A liquid crystal on silicon (LCoS) device is introduced as the spatial light modulator (SLM) for imaging a bright see-through view and rendering sharp occlusion patterns. A loop structure is built to eliminate vertical parallax. The system is designed to obtain a maximum monocular FOV of H114\u00b0 x V95\u00b0 with hard-edge occlusion and a FOV of H83.5\u00b0 x V53.1\u00b0 is demonstrated with our benchtop prototype.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-2654\" src=\"https:\/\/carelab.info\/wp-content\/uploads\/2021\/08\/Yan_OL_Paper_2.jpg\" alt=\"\" width=\"1076\" height=\"913\" srcset=\"https:\/\/carelab.info\/wp-content\/uploads\/2021\/08\/Yan_OL_Paper_2.jpg 1076w, https:\/\/carelab.info\/wp-content\/uploads\/2021\/08\/Yan_OL_Paper_2-300x255.jpg 300w, https:\/\/carelab.info\/wp-content\/uploads\/2021\/08\/Yan_OL_Paper_2-768x652.jpg 768w\" sizes=\"(max-width: 1076px) 100vw, 1076px\" \/><\/p>\n<p>(A) The real scene directly recorded by the camera at the entrance pupil. (B) The see-through view recorded through the prototype. (C) A target image (a red teapot). The bright spot by specular lighting and the dark surface by diffuse lighting is bounded with blue and yellow dot-lines, respectively. (D) The virtual content displayed without occlusion. (E) A sharp occlusion pattern produced by the LCoS. (F) The virtual content displayed with occlusion. The teapot becomes more visible and realistic.<\/p>","protected":false},"excerpt":{"rendered":"<p>Our D3 student Zhang Yan&#8217;s paper has been accepted to Optics Letters. His paper reports on a novel optical see-through wide field-of-view (approximately 100 degrees horizontal) AR displays that are capable of hard-edge occlusion by using paired conical reflectors and <a class=\"more-link\" href=\"https:\/\/carelab.info\/en\/2021\/07\/26\/zhang-yans-paper-has-been-accepted-to-optics-letters\/\">More &#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pgc_meta":""},"categories":[1],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/posts\/2645"}],"collection":[{"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/comments?post=2645"}],"version-history":[{"count":11,"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/posts\/2645\/revisions"}],"predecessor-version":[{"id":2674,"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/posts\/2645\/revisions\/2674"}],"wp:attachment":[{"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/media?parent=2645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/categories?post=2645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/carelab.info\/en\/wp-json\/wp\/v2\/tags?post=2645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}