{"id":908,"date":"2018-08-06T17:51:32","date_gmt":"2018-08-06T17:51:32","guid":{"rendered":"http:\/\/wtheiss.com\/wordpress\/?p=908"},"modified":"2018-08-06T18:08:12","modified_gmt":"2018-08-06T18:08:12","slug":"wosp-sunblock","status":"publish","type":"post","link":"https:\/\/wtheiss.com\/wordpress\/?p=908","title":{"rendered":"WOSP Sunblock"},"content":{"rendered":"

\"sunblock<\/a><\/p>\n

A halogen light, 16 UV-LEDs and an integrating sphere have been combined with 2 spectrometers to the WOSP Sunblock<\/strong> system. It measures reflectance in the range 300 … 1050 nm, with the option to extend the NIR range up to 2500 nm.<\/p>\n

\"illumination<\/a><\/p>\n

The light sources inject radiation into a sphere (76 mm diameter). The intensity at the sphere wall as well as the intensity reflected by the sample are simultaneously recorded with 2 spectrometers. Signals recorded for a reference mirror and the sample are combined to compute the final reflectance of the sample.<\/p>\n

\"side<\/a><\/p>\n

The whole block can be mounted on a traverse or a robot arm – only electrical cables leave the system.<\/p>\n

\"rack<\/a><\/p>\n

The rack mounted system shown above has been used to record some demonstration spectra discussed below. All spectra have been acquired in less than one second.<\/p>\n

Since the final spectrum is based on ratios of spectra the absolute light source intensity cancels – this leads to very stable results. The spectra shown below have been recorded with a delay of more than half an hour:<\/p>\n

\"set4\"<\/a><\/p>\n

The next set of spectra show reflectance spectra of float glass with SiN layers of different thickness:<\/p>\n

\"set2\"<\/a><\/p>\n

The last demo set shows spectra of solar glass with AR coatings, applied on one side only and on both sides of the glass:\"set3\"<\/a><\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

A halogen light, 16 UV-LEDs and an integrating sphere have been combined with 2 spectrometers to the WOSP Sunblock system. It measures reflectance in the range 300 … 1050 nm, with the option to extend the NIR range up to 2500 nm. The light sources inject radiation into a sphere (76 mm diameter). The intensity […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[2,207,4],"tags":[],"_links":{"self":[{"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/908"}],"collection":[{"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=908"}],"version-history":[{"count":3,"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/908\/revisions"}],"predecessor-version":[{"id":921,"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/908\/revisions\/921"}],"wp:attachment":[{"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wtheiss.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}