{"id":6674,"date":"2023-07-05T16:55:34","date_gmt":"2023-07-05T14:55:34","guid":{"rendered":"https:\/\/www.vsl.nl\/?p=6674"},"modified":"2025-09-10T17:08:23","modified_gmt":"2025-09-10T15:08:23","slug":"radiometry-for-photo-biological-safety","status":"publish","type":"post","link":"https:\/\/www.vsl.nl\/en\/projects\/radiometry-for-photo-biological-safety\/","title":{"rendered":"Radiometry for Photo-biological safety"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_section full_width=&#8221;stretch_row&#8221; content_placement=&#8221;middle&#8221; css=&#8221;.vc_custom_1688548971670{background-image: url(https:\/\/www.vsl.nl\/wp-content\/uploads\/2023\/05\/VSL_labs-232-scaled.jpg?id=5628) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_class=&#8221;main_header gradient_header dg-position-realtive&#8221;][vc_row equal_height=&#8221;yes&#8221; content_placement=&#8221;middle&#8221; el_class=&#8221;dg-header&#8211;small&#8221;][vc_column width=&#8221;5\/6&#8243; el_class=&#8221;dg-padding-none&#8221;][vc_column_text css=&#8221;.vc_custom_1688548510665{margin-bottom: 0px !important;padding-bottom: 0px !important;}&#8221; el_class=&#8221;text-white&#8221;]<\/p>\n<h1>Radiometry for Photo-biological safety<\/h1>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/6&#8243;][\/vc_column][\/vc_row][\/vc_section][vc_section el_class=&#8221;dg-padding-mid&#8221;][vc_row equal_height=&#8221;yes&#8221; content_placement=&#8221;top&#8221;][vc_column width=&#8221;2\/3&#8243; el_class=&#8221;full_width_responsive dg-padding-none&#8221;][vc_column_text css=&#8221;.vc_custom_1688549169494{padding-right: 10% !important;}&#8221; el_class=&#8221;full_width_responsive dg-padding-none&#8221;]<\/p>\n<p class=\"header_subtext\">Projects<\/p>\n<h2>Radiometry for Photo-biological safety<\/h2>\n<p>The aim of this project is to develop a SI-traceable calibration service to enable evaluation of photobiological safety of lamps and lamp systems, including LED based sources. The increased number of norms, regulations and guidelines (NEN-EN-IEC 62471, NPR-IEC\/TR 62471-2, IEC\/TR 62778, etc.) designed to protect workers and general public from potentially adverse effect of broad band optical radiation demands extra attention from manufacturers and affects equally already existing processes and products as well as development of new technology. However, light sources, especially LED based, have a diverse applications (medical field, transport, entertainment industry, etc.), which makes evaluation of potential health risks even more complicated, demanding not only an extensive multidisciplinary knowledge but also certain precision of measurement techniques used. Apart of actual user conditions, the final design of the product, including final housing and\/or possible input optics, may lead to over\/underestimation of relevant hazards, resulting in not only the possible increase of health risks but also a considerable economic impact on manufacturing companies.[\/vc_column_text][vc_column_text el_class=&#8221;full_width_responsive dg-padding-none&#8221;]<\/p>\n<h2>Our role<\/h2>\n<p>VSL would develop calibration procedure according to relevant photobiological norms and standards with traceability to SI. The technique is based on spectral radiance and irradiance measurements and calculation of permissible exposure times with corresponding uncertainty budget estimation.[\/vc_column_text][vc_column_text el_class=&#8221;full_width_responsive dg-padding-none&#8221;]<strong>Start date:<\/strong> January 1, 2018<br \/>\n<strong>End date:<\/strong> December 31, 2023[\/vc_column_text][vc_column_text el_class=&#8221;full_width_responsive dg-padding-none&#8221;]<em>&#8220;The project receives funding from the Dutch Ministry of Economic Affairs and Climate Policy.&#8221;<\/em>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243; css=&#8221;.vc_custom_1757516891104{margin-top: 0px !important;margin-right: 0px !important;margin-bottom: 0px !important;margin-left: 0px !important;padding-top: 0px !important;padding-right: 0px !important;padding-left: 0px !important;}&#8221; el_class=&#8221;tablet_expert full_width_responsive&#8221;]<div class=\"templatera_shortcode\"><section class=\"vc_section\"><div class=\"vc_row wpb_row vc_row-fluid full_width_responsive\"><div class=\"dg-specialist--inner dg-padding--none-inner wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner vc_custom_1757057705883\"><div class=\"wpb_wrapper\">\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_left  vc_custom_1757060529990  dg-expert--image\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper   vc_box_border_grey\"><img decoding=\"async\" width=\"500\" height=\"333\" data-src=\"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/09\/Paul-Dekker.jpg\" class=\"vc_single_image-img attachment-full lazyload\" alt=\"\" title=\"Paul-Dekker\" data-srcset=\"https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/09\/Paul-Dekker.jpg 500w, https:\/\/www.vsl.nl\/wp-content\/uploads\/2025\/09\/Paul-Dekker-300x200.jpg 300w\" data-sizes=\"(max-width: 500px) 100vw, 500px\"  data-dt-location=\"https:\/\/www.vsl.nl\/en\/?attachment_id=26952\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 500px; --smush-placeholder-aspect-ratio: 500\/333;\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<div class=\"vc_row wpb_row vc_inner vc_row-fluid dg-padding--square vc_custom_1757057909078 vc_row-o-equal-height vc_row-o-content-middle vc_row-flex\"><div class=\"dg-padding--none-inner dg-expert--inner-content wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner vc_custom_1757058090823\"><div class=\"wpb_wrapper\">\n\t<div class=\"wpb_text_column wpb_content_element  vc_custom_1757510893821 dg-expert--content-header\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<h3>Would you like to know more about our services?<\/h3>\n<p>Our experts are happy to help.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\n\t<div class=\"wpb_text_column wpb_content_element  vc_custom_1757060549163 sector_specialist\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p><b>Paul Dekker<\/b><br \/>\nSenior Metrologist Length - Optics<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\n\t<div class=\"wpb_raw_code wpb_raw_html wpb_content_element vc_custom_1757060563914\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<i class=\"far fa-envelope green_icon\"><\/i> <a class=\"custom_link_specialist\" href=\"mailto:pdekker@vsl.nl\"> pdekker@vsl.nl<\/a>\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section><\/div>[\/vc_column][\/vc_row][\/vc_section][vc_section full_width=&#8221;stretch_row&#8221; el_class=&#8221;dg-padding-mid&#8221; css=&#8221;.vc_custom_1669644694568{background-color: #fafafa !important;}&#8221;][vc_row css=&#8221;.vc_custom_1641224545247{margin-bottom: 0px !important;padding-bottom: 0px !important;}&#8221;][vc_column width=&#8221;2\/3&#8243; el_class=&#8221;dg-padding-none&#8221;][vc_column_text css=&#8221;.vc_custom_1672324944721{margin-bottom: 0px !important;padding-bottom: 0px !important;}&#8221;]<\/p>\n<p class=\"header_subtext\">Projects<\/p>\n<h3>Our expertise in practice<\/h3>\n<p>Read more about our projects.[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243;][\/vc_column][\/vc_row][vc_row el_class=&#8221;dg-padding-small-top&#8221;][vc_column el_class=&#8221;dg-padding-none&#8221;][vc_basic_grid post_type=&#8221;post&#8221; max_items=&#8221;10&#8243; element_width=&#8221;3&#8243; item=&#8221;256&#8243; grid_id=&#8221;vc_gid:1757516886253-c6d21517-75a2-9&#8243; taxonomies=&#8221;9&#8243;][\/vc_column][\/vc_row][\/vc_section]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The aim of this project is to develop a SI-traceable calibration service to enable evaluation of photobiological safety of lamps and lamp systems, including LED based sources.<\/p>\n","protected":false},"author":3,"featured_media":5629,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[78,79,51,122],"tags":[],"class_list":["post-6674","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gezondheid-en-milieu","category-health-and-environment","category-projects","category-security-and-resilience","category-78","category-79","category-51","category-122","description-off"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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