{"id":152070,"date":"2015-11-30T03:00:00","date_gmt":"2015-11-30T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=e12d4f667bef5491ccd6a6d2d47027f2"},"modified":"2015-11-30T03:00:00","modified_gmt":"2015-11-30T00:00:00","slug":"design-of-an-inexpensive-integrating-sphere-student-laboratory-setup-for-the-opticalcharacterization-of-light-sources","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=152070","title":{"rendered":"Design of an inexpensive integrating sphere student laboratory setup for the optical\r\ncharacterization of light sources"},"content":{"rendered":"<p>In this paper, the design of an inexpensive integrating sphere setup is presented, enabling students<br \/>\nto perform optical characterization of light sources with reasonable accuracy, in a student<br \/>\nlaboratory context. Instead of using an expensive sphere with magnesium oxide or barium sulfate<br \/>\ncoating, a cheap polystyrene sphere is employed. In combination with a low-cost USB<br \/>\nspectroradiometer, the system enables the direct measurement of the spectral radiant power of a<br \/>\nlight source. In addition to the radiant power, the luminous flux, luminous efficacy, and<br \/>\ndistinctive colorimetric quantities (colour coordinates, colour temperature, and colour rendering<br \/>\nindex) can be determined. Besides a description of the equipment used, the experimental measurement<br \/>\nprocedure and some typical measurement results are presented. A comparison between the data and the<br \/>\nresults obtained with scientific metrology instrumentation indicates reasonable accuracy. As a<br \/>\nresult, it can be concluded that the purp&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this paper, the design of an inexpensive integrating sphere setup is presented, enabling students<br \/>\nto perform optical characterization of light sources with reasonable accuracy, in a student<br \/>\nlaboratory context. Instead of using an expensive sphere &#8230;<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-152070","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/152070","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=152070"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/152070\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=152070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=152070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=152070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}