{"id":1692,"date":"2026-04-24T08:17:55","date_gmt":"2026-04-24T08:17:55","guid":{"rendered":"https:\/\/novanta.com\/precision-medicine\/?post_type=product&#038;p=1692"},"modified":"2026-06-04T14:45:56","modified_gmt":"2026-06-04T14:45:56","slug":"pr-400-led-integrating-sphere-source","status":"publish","type":"product","link":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/","title":{"rendered":"PR-400 LED Integrating Sphere Source"},"content":{"rendered":"\n\n<div class=\"hero alignfull hero--default hero--medium has-overlay has-overlay-dark\">\n\t\t\t\t\t<figure class=\"hero__image-wrap\">\n\t\t\t\t<img decoding=\"async\" width=\"2560\" height=\"853\" src=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?quality=85&amp;strip=all&amp;w=2560\" class=\"attachment-design-max size-design-max\" alt=\"\" fetchpriority=\"high\" srcset=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?resize=320%2C107&amp;quality=85&amp;strip=all 320w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?resize=400%2C133&amp;quality=85&amp;strip=all 400w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?resize=840%2C280&amp;quality=85&amp;strip=all 840w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?resize=1200%2C400&amp;quality=85&amp;strip=all 1200w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?resize=1680%2C560&amp;quality=85&amp;strip=all 1680w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?resize=1920%2C640&amp;quality=85&amp;strip=all 1920w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\t\t\t<\/figure>\n\t\t\t\n\t\n\t\n<div class=\"hero__content hero__content--vertical-align-bottom\" style=\"--one-novanta-hero-pre-heading-acent-line-color: #4bb295\">\n\t<div class=\"hero__content-wrap has-medium-font-size has-heading-font-family\">\n\t\t\t\t\t<p class=\"hero__pre-heading shiny-text\">\n\t\t\t\tLight source\t\t\t<\/p>\n\t\t\n\t\t<h1 class=\"hero__heading line-expanding has-display-font-size\">\n\t\t\tPR-400 White LED Integrating Sphere Source\t\t<\/h1>\n\n\t\t<p>Part Number: 6000-0020-00<\/p>\t<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"alignfull is-layout-constrained wp-block-one-novanta-section-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--80);padding-bottom:var(--wp--preset--spacing--80)\">\n<div class=\"wp-block-one-novanta-section-content alignwide\"><\/div>\n<\/div>\n\n\n\n<div class=\"alignfull is-layout-constrained wp-block-one-novanta-section-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">\n<div class=\"wp-block-one-novanta-section-content alignwide\">\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n<\/div>\n<\/div>\n\n\n\n<div class=\"alignfull is-layout-constrained wp-block-one-novanta-section-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--80)\">\n<div class=\"wp-block-one-novanta-section-heading alignwide\" style=\"margin-bottom:var(--wp--preset--spacing--40)\">\n<h2 class=\"wp-block-heading one-novanta-section__title has-xx-large-font-size\" id=\"h-related-products\">Related Products<\/h2>\n<\/div>\n\n\n\n<div class=\"wp-block-one-novanta-section-content alignwide\"><div class=\"latest-articles-1 latest-articles--card-type-article wp-block-one-novanta-latest-articles\" data-show-load-more-button=\"false\">\n\t\n<div class=\"grid alignwide grid--cols-4\" >\n\t\n<div class=\"article-card image-zoom-in\">\n\n\t<figure class=\"article-card__image-wrap\">\n\t\t<img loading=\"lazy\" decoding=\"async\" style=\"object-position: 50% 50%\" width=\"400\" height=\"400\" src=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6000-0014-10.jpg?quality=85&amp;strip=all&amp;w=400\" class=\"one-novanta-default-image attachment-design-sm size-design-sm\" alt=\"Picture of a LRS-455-6-1 six inch integrating sphere on white background\" srcset=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6000-0014-10.jpg?quality=85&amp;strip=all 1200w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6000-0014-10.jpg?resize=320%2C320&amp;quality=85&amp;strip=all 320w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6000-0014-10.jpg?resize=400%2C400&amp;quality=85&amp;strip=all 400w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6000-0014-10.jpg?resize=840%2C840&amp;quality=85&amp;strip=all 840w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/>\t<\/figure>\n\n\t<div class=\"article-card__content\">\n\t\t\n\t\t<h3 class=\"article-card__heading\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/novanta.com\/precision-medicine\/product\/pr-455-6-inch-integrating-sphere\/\" class=\"stretched-link article-card__link\">\n\t\t\t\n\t\t\t\tLRS-455-6-1 6&quot; Integrating Sphere\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/h3>\n\t<\/div>\n<\/div>\n\n<div class=\"article-card image-zoom-in\">\n\n\t<figure class=\"article-card__image-wrap\">\n\t\t<img loading=\"lazy\" decoding=\"async\" style=\"object-position: 50% 50%\" width=\"400\" height=\"400\" src=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Novanta-Photo-Research-SpectraScanPR-1050-left-.jpg?quality=85&amp;strip=all&amp;w=400\" class=\"one-novanta-default-image attachment-design-sm size-design-sm\" alt=\"Novanta Photo Research SpectraScan PR 1050 left view\" srcset=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Novanta-Photo-Research-SpectraScanPR-1050-left-.jpg?quality=85&amp;strip=all 1200w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Novanta-Photo-Research-SpectraScanPR-1050-left-.jpg?resize=320%2C320&amp;quality=85&amp;strip=all 320w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Novanta-Photo-Research-SpectraScanPR-1050-left-.jpg?resize=400%2C400&amp;quality=85&amp;strip=all 400w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Novanta-Photo-Research-SpectraScanPR-1050-left-.jpg?resize=840%2C840&amp;quality=85&amp;strip=all 840w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/>\t<\/figure>\n\n\t<div class=\"article-card__content\">\n\t\t\n\t\t<h3 class=\"article-card__heading\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/novanta.com\/precision-medicine\/product\/photo-research-pr-1050-spectroradiometer\/\" class=\"stretched-link article-card__link\">\n\t\t\t\n\t\t\t\tPhoto Research\u00ae SpectraScan\u00ae PR-1050\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/h3>\n\t<\/div>\n<\/div>\n\n<div class=\"article-card image-zoom-in\">\n\n\t<figure class=\"article-card__image-wrap\">\n\t\t<img loading=\"lazy\" decoding=\"async\" style=\"object-position: 50% 50%\" width=\"400\" height=\"400\" src=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6735-0001-00.jpg?quality=85&amp;strip=all&amp;w=400\" class=\"one-novanta-default-image attachment-design-sm size-design-sm\" alt=\"SpectraScan PR\u2011735 spectroradiometer\" srcset=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6735-0001-00.jpg?quality=85&amp;strip=all 1200w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6735-0001-00.jpg?resize=320%2C320&amp;quality=85&amp;strip=all 320w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6735-0001-00.jpg?resize=400%2C400&amp;quality=85&amp;strip=all 400w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6735-0001-00.jpg?resize=840%2C840&amp;quality=85&amp;strip=all 840w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/>\t<\/figure>\n\n\t<div class=\"article-card__content\">\n\t\t\n\t\t<h3 class=\"article-card__heading\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/novanta.com\/precision-medicine\/product\/photo-research-pr-735\/\" class=\"stretched-link article-card__link\">\n\t\t\t\n\t\t\t\tPhoto Research\u00ae SpectraScan\u00ae PR-735\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/h3>\n\t<\/div>\n<\/div>\n\n<div class=\"article-card image-zoom-in\">\n\n\t<figure class=\"article-card__image-wrap\">\n\t\t<img loading=\"lazy\" decoding=\"async\" style=\"object-position: 50% 50%\" width=\"400\" height=\"400\" src=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6745-0001-00.jpg?quality=85&amp;strip=all&amp;w=400\" class=\"one-novanta-default-image attachment-design-sm size-design-sm\" alt=\"SpectraScan PR\u2011745 spectroradiometer\" srcset=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6745-0001-00.jpg?quality=85&amp;strip=all 1200w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6745-0001-00.jpg?resize=320%2C320&amp;quality=85&amp;strip=all 320w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6745-0001-00.jpg?resize=400%2C400&amp;quality=85&amp;strip=all 400w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/6745-0001-00.jpg?resize=840%2C840&amp;quality=85&amp;strip=all 840w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/>\t<\/figure>\n\n\t<div class=\"article-card__content\">\n\t\t\n\t\t<h3 class=\"article-card__heading\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/novanta.com\/precision-medicine\/product\/photo-research-pr-745\/\" class=\"stretched-link article-card__link\">\n\t\t\t\n\t\t\t\tPhoto Research\u00ae SpectraScan\u00ae PR-745\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/h3>\n\t<\/div>\n<\/div>\n\n<div class=\"article-card image-zoom-in\">\n\n\t<figure class=\"article-card__image-wrap\">\n\t\t<img loading=\"lazy\" decoding=\"async\" style=\"object-position: 50% 50%\" width=\"400\" height=\"400\" src=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Photo-Research-SpectraScan-PR-740-back-left.jpg?quality=85&amp;strip=all&amp;w=400\" class=\"one-novanta-default-image attachment-design-sm size-design-sm\" alt=\"Photo Research SpectraScan PR 740 back left view\" srcset=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Photo-Research-SpectraScan-PR-740-back-left.jpg?quality=85&amp;strip=all 1200w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Photo-Research-SpectraScan-PR-740-back-left.jpg?resize=320%2C320&amp;quality=85&amp;strip=all 320w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Photo-Research-SpectraScan-PR-740-back-left.jpg?resize=400%2C400&amp;quality=85&amp;strip=all 400w, https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/Photo-Research-SpectraScan-PR-740-back-left.jpg?resize=840%2C840&amp;quality=85&amp;strip=all 840w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/>\t<\/figure>\n\n\t<div class=\"article-card__content\">\n\t\t\n\t\t<h3 class=\"article-card__heading\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/novanta.com\/precision-medicine\/product\/photo-research-pr-740\/\" class=\"stretched-link article-card__link\">\n\t\t\t\n\t\t\t\tPhoto Research\u00ae SpectraScan\u00ae PR-740\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/h3>\n\t<\/div>\n<\/div>\n<\/div>\n\n<div style=\"display:none;\" class=\"button-load-more-wrapper\" data-page=\"2\" data-query=\"{&quot;post_type&quot;:&quot;product&quot;,&quot;post_status&quot;:&quot;publish&quot;,&quot;posts_per_page&quot;:-1,&quot;post__in&quot;:[1693,1735,1739,1734,1733],&quot;orderby&quot;:&quot;post__in&quot;,&quot;heading_level&quot;:&quot;h3&quot;,&quot;block_template&quot;:&quot;article&quot;,&quot;card_options&quot;:[],&quot;term_id&quot;:0,&quot;selected_tax&quot;:&quot;category&quot;}\" data-query-bkp=\"{&quot;post_type&quot;:&quot;product&quot;,&quot;post_status&quot;:&quot;publish&quot;,&quot;posts_per_page&quot;:-1,&quot;post__in&quot;:[1693,1735,1739,1734,1733],&quot;orderby&quot;:&quot;post__in&quot;,&quot;heading_level&quot;:&quot;h3&quot;,&quot;block_template&quot;:&quot;article&quot;,&quot;card_options&quot;:[],&quot;term_id&quot;:0,&quot;selected_tax&quot;:&quot;category&quot;}\" data-source=\"https:\/\/novanta.com\/precision-medicine\/wp-json\/one-novanta\/v1\/latest-articles\" data-nonce=\"c6167cb0a1\" data-target=\".latest-articles-1 .grid\" data-found-posts=\"5\" data-number-of-posts-to-load=\"4\">\n\t<button class=\"button-load-more\" aria-label=\"Load more results\" tabindex=\"0\">\n\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"64\" height=\"61\" viewBox=\"0 0 64 61\" fill=\"none\"><path stroke=\"currentColor\" d=\"M63 30.5c0 16.553-13.864 30-31 30S1 47.053 1 30.5 14.864.5 32 .5s31 13.447 31 30ZM32 19v21.931M43.105 30H20.5\"\/><\/svg>\n\t\t\t<span class=\"button-load-more-text\">Load more<\/span>\n\t\t\t<span  class=\"button-load-more-text--loading\">Loading&#8230;<\/span>\n\t<\/button>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"alignfull has-secondary-background-color has-background is-layout-constrained wp-block-one-novanta-section-is-layout-constrained\" id=\"one-novanta-single-product-all-features\" style=\"padding-top:var(--wp--preset--spacing--20);padding-bottom:var(--wp--preset--spacing--80)\">\n<div class=\"wp-block-one-novanta-section-content alignwide\">\n<rt-tabs class=\"novanta-tabs-wrapper\" current-tab=\"tab-overview-features-1\" >\n\n\t<rt-tabs-nav class=\"novanta-tabs-nav\">\n\t\t\t\t\t\t\t\t<rt-tabs-nav-item class=\"novanta-tabs-nav__item has-medium-font-size\"  active=\"yes\">\n\t\t\t\t<a class=\"has-foreground-color\" href=\"#tab-overview-features-1\">Overview &amp; Features<\/a>\n\t\t\t<\/rt-tabs-nav-item>\n\n\t\t\t\t\t\t\t\t\t\t\t<rt-tabs-nav-item class=\"novanta-tabs-nav__item has-medium-font-size\" >\n\t\t\t\t<a class=\"has-foreground-color\" href=\"#tab-faqs-2\">FAQs<\/a>\n\t\t\t<\/rt-tabs-nav-item>\n\n\t\t\t\t\t\t\t\t\t\t\t<rt-tabs-nav-item class=\"novanta-tabs-nav__item has-medium-font-size\" >\n\t\t\t\t<a class=\"has-foreground-color\" href=\"#tab-documents-downloads-3\">Documents &amp; Downloads<\/a>\n\t\t\t<\/rt-tabs-nav-item>\n\n\t\t\t\t\t\t<\/rt-tabs-nav>\n\n\t\t\t\t\t<rt-tabs-tab id=\"tab-overview-features-1\"  open=\"yes\">\n\t\t\t\t\t\n<div class=\"alignfull is-layout-constrained wp-block-one-novanta-section-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">\n<div class=\"wp-block-one-novanta-section-content alignwide\">\n<div class=\"two-columns--media-align-left wp-block-one-novanta-fifty-fifty-wrapper two-columns two-columns--vertical-align-top\">\n\t\n<div class=\"two-columns__column\">\n\t<h2 class=\"one-novanta-50-50-wrapper__heading has-xx-large-font-size\">Overview<\/h2><\/div>\n\n<div class=\"two-columns__column\">\n\t\n<div class=\"wp-block-one-novanta-fifty-fifty-wrapper alignfull\">\n<p class=\"has-medium-font-size\"><strong>Features and Benefits<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-medium-font-size\">\n<li>Available AR\/VR Aperture Diameters: 3mm, 4mm &amp; 5mm<\/li>\n\n\n\n<li>Available Internal Apertures: 2\u00b0, 1\u00b0, 0.5\u00b0, 0.25\u00b0, 0.2\u00b0, 0.125\u00b0, 0.1\u00b0<\/li>\n\n\n\n<li>Objective Lenses: MS-75<\/li>\n\n\n\n<li>Luminance Accuracy *: 2%<\/li>\n\n\n\n<li>Luminance Repeatability *: &lt;1%<\/li>\n\n\n\n<li>Color Accuracy *: +\/- 0.0015cd\/m2<\/li>\n\n\n\n<li>Useful for contrast measurements<\/li>\n\n\n\n<li>Compact AR\/VR accessory housing allows angular measurements<\/li>\n\n\n\n<li>Wide dynamic range Cost-effective AR\/VR accessory<\/li>\n<\/ul>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Applications<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-medium-font-size\">\n<li>Automotive<\/li>\n\n\n\n<li>Consumer Display<\/li>\n\n\n\n<li>Avionics\/Aerospace<\/li>\n\n\n\n<li>Military\/Defense<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\t\t\t\t<\/rt-tabs-tab>\n\n\t\t\t\t\t\t\t<rt-tabs-tab id=\"tab-faqs-2\" >\n\t\t\t\t\t\n<div class=\"alignfull is-layout-constrained wp-block-one-novanta-section-is-layout-constrained\" style=\"padding-top:0;padding-bottom:0\">\n<div class=\"wp-block-one-novanta-section-heading alignwide\" style=\"margin-bottom:var(--wp--preset--spacing--40)\">\n<h2 class=\"wp-block-heading one-novanta-section__title has-xx-large-font-size\" id=\"h-faqs\">FAQs<\/h2>\n<\/div>\n\n\n\n<div class=\"wp-block-one-novanta-section-content alignwide\"><\/div>\n<\/div>\n\t\t\t\t<\/rt-tabs-tab>\n\n\t\t\t\t\t\t\t<rt-tabs-tab id=\"tab-documents-downloads-3\" >\n\t\t\t\t\t\n<div class=\"align wp-block-one-novanta-documents wp-one-novanta-table wp-one-novanta-table--has-background--secondary\">\n\n\t<div class=\"wp-one-novanta-table__header\">\n\t\t\n\t\n<div class=\"wp-one-novanta-table__filter one-novanta-filter-dropdown\" data-filter-column=\"2\">\n\n\t\t<button class=\"one-novanta-filter-dropdown__button wp-one-novanta-button wp-one-novanta-button--secondary\" aria-expanded=\"false\" type=\"button\">\n\t\t<span class=\"text\"><span class=\"one-novanta-filter-dropdown__selected\"><span class=\"has-medium-font-size one-novanta-filter-dropdown__selected-value-prefix\"><\/span><span class=\"has-medium-font-size one-novanta-filter-dropdown__selected-value\">Filter by Type<\/span><\/span><\/span>\n\t\t\t\t\t<span class=\"wp-one-novanta-button__icon\">\n\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"8\" viewBox=\"0 0 12 8\" fill=\"none\"><path fill=\"currentColor\" d=\"M1.41.297 6 4.877l4.59-4.58L12 1.707l-6 6-6-6L1.41.297Z\" \/><\/svg>\t\t\t<\/span>\n\t\t\t<\/button>\n\t\n\t<ul class=\"one-novanta-filter-dropdown__dropdown-list is-hidden one-novanta-filter-dropdown__dropdown-list--left\" role=\"listbox\">\n\t\t<!-- Default option -->\n\t\t<li id=\"filter-option-0\" role=\"option\" class=\"selected wp-one-novanta-table__filter__option--default\">Filter by Type<\/li>\n\n\t\t<!-- Options from column. -->\n\t\t\t\t\t<li id=\"filter-option-1\" role=\"option\">Datasheet<\/li>\n\t\t\t\t\t\t<li id=\"filter-option-2\" role=\"option\">User Manual<\/li>\n\t\t\t\t<\/ul>\n<\/div>\n\t<\/div>\n\n\t<figure data-is-loading=\"false\">\n\n\t\t<table class=\"wp-one-novanta-table__wrapper\">\n\n\t\t\t<thead class=\"wp-one-novanta-table__head\">\n\t\t\t\t<tr class=\"wp-one-novanta-table__head-row\">\n\t\t\t\t\t\t\t\t\t\t\t<th class=\"wp-one-novanta-table__head-cell wp-one-novanta-table__head-cell__background-mid-gray\">Download<\/th>\n\t\t\t\t\t\t\t\t\t\t\t<th class=\"wp-one-novanta-table__head-cell wp-one-novanta-table__head-cell__background-mid-gray\">Download Type<\/th>\n\t\t\t\t\t\t\t\t\t\t\t<th class=\"wp-one-novanta-table__head-cell wp-one-novanta-table__head-cell__background-mid-gray\">Language<\/th>\n\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t<\/thead>\n\n\t\t\t<tbody class=\"wp-one-novanta-table__body\">\n\t\t\t\n<tr class=\"wp-one-novanta-table__body-row\">\n\t\t\t\t<td class=\"wp-one-novanta-table__body-cell\">\n\t\t\t\tPR-400 Specifications PR400SPEC07102025\t\t\t<\/td>\n\t\t\t\t\t\t\t<td class=\"wp-one-novanta-table__body-cell\">\n\t\t\t\tDatasheet\t\t\t<\/td>\n\t\t\t\t\t\t\t<td class=\"wp-one-novanta-table__body-cell\">\n\t\t\t\t<a href=\"#\" role=\"button\" data-gate-id=\"1059\" data-form-id=\"2\" data-modal-id=\"gated_doc_2\" aria-label=\"Download document in English\">English<\/a>\t\t\t<\/td>\n\t\t\t\t<\/tr>\n\n<tr class=\"wp-one-novanta-table__body-row\">\n\t\t\t\t<td class=\"wp-one-novanta-table__body-cell\">\n\t\t\t\tPR-400 Manual\t\t\t<\/td>\n\t\t\t\t\t\t\t<td class=\"wp-one-novanta-table__body-cell\">\n\t\t\t\tUser Manual\t\t\t<\/td>\n\t\t\t\t\t\t\t<td class=\"wp-one-novanta-table__body-cell\">\n\t\t\t\t<a href=\"#\" role=\"button\" data-gate-id=\"1058\" data-form-id=\"2\" data-modal-id=\"gated_doc_2\" aria-label=\"Download document in English\">English<\/a>\t\t\t<\/td>\n\t\t\t\t<\/tr>\n\t\t\t<\/tbody>\n\n\t\t<\/table>\n\n\t\t\n\t<div class=\"\n\t\twp-one-novanta-table__is-loading hidden\t\">\n\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"32\" height=\"32\" viewBox=\"0 0 24 24\"><!-- Icon from SVG Spinners by Utkarsh Verma - https:\/\/github.com\/n3r4zzurr0\/svg-spinners\/blob\/main\/LICENSE --><path fill=\"currentColor\" d=\"M12,1A11,11,0,1,0,23,12,11,11,0,0,0,12,1Zm0,19a8,8,0,1,1,8-8A8,8,0,0,1,12,20Z\" opacity=\".25\" \/><path fill=\"currentColor\" d=\"M12,4a8,8,0,0,1,7.89,6.7A1.53,1.53,0,0,0,21.38,12h0a1.5,1.5,0,0,0,1.48-1.75,11,11,0,0,0-21.72,0A1.5,1.5,0,0,0,2.62,12h0a1.53,1.53,0,0,0,1.49-1.3A8,8,0,0,1,12,4Z\"><animateTransform attributeName=\"transform\" dur=\"0.75s\" repeatCount=\"indefinite\" type=\"rotate\" values=\"0 12 12;360 12 12\" \/><\/path><\/svg>\n\t<\/div>\n\n\t<\/figure>\n\n\t\n<\/div>\n\t\t\t\t<\/rt-tabs-tab>\n\n\t\t\t\n<\/rt-tabs>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A compact, NIST\u2011traceable integrating sphere light source engineered to deliver uniform, stable, and repeatable radiance for precise spectroradiometer and photometric instrument calibration.<\/p>\n<p><strong>Why use the PR\u2011400 for calibration?<\/strong><\/p>\n<ul role=\"list\">\n<li>Provides a highly uniform, diffuse radiance source for accurate photometric, radiometric, and spectroradiometric calibration<\/li>\n<li>Ensures measurement confidence and traceability with long\u2011term stability and NIST\u2011referenced performance<\/li>\n<li>Simplifies calibration workflows with a compact, temperature\u2011controlled LED sphere source designed for laboratory and production environments<\/li>\n<\/ul>\n","protected":false},"featured_media":546,"template":"","meta":{"_acf_changed":false,"is_product_deprecated":false,"new_product_name":"","new_product_url":"","override_cta_button":true,"cta_button_text":"Download Datasheet","cta_target":"tab-documents-downloads-3","cta_button_link_type":"anchor","cta_button_url":"","footnotes":""},"product_type":[2],"product_cat":[83],"product_tag":[173,181,187,201,178,203,199,188,175,196,197,198,202,182,200,169,177,186,170],"class_list":{"0":"post-1692","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-light-sources","8":"first","9":"instock","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PR-400 LED Integrating Sphere Source - Precision Medicine<\/title>\n<meta name=\"description\" content=\"PR-400 LED integrating sphere source delivers uniform, stable illumination for precise light and color measurement, calibration, and display testing applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PR-400 LED Integrating Sphere Source\" \/>\n<meta property=\"og:description\" content=\"PR-400 LED integrating sphere source delivers uniform, stable illumination for precise light and color measurement, calibration, and display testing applications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/\" \/>\n<meta property=\"og:site_name\" content=\"Precision Medicine\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-04T14:45:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?resize=1200,675\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/product\\\/pr-400-led-integrating-sphere-source\\\/\",\"url\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/product\\\/pr-400-led-integrating-sphere-source\\\/\",\"name\":\"PR-400 LED Integrating Sphere Source - Precision Medicine\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/product\\\/pr-400-led-integrating-sphere-source\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/product\\\/pr-400-led-integrating-sphere-source\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/wp-content\\\/uploads\\\/sites\\\/36\\\/2026\\\/04\\\/product-header.jpg?quality=85&strip=all\",\"datePublished\":\"2026-04-24T08:17:55+00:00\",\"dateModified\":\"2026-06-04T14:45:56+00:00\",\"description\":\"PR-400 LED integrating sphere source delivers uniform, stable illumination for precise light and color measurement, calibration, and display testing applications.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/product\\\/pr-400-led-integrating-sphere-source\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/product\\\/pr-400-led-integrating-sphere-source\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/product\\\/pr-400-led-integrating-sphere-source\\\/#primaryimage\",\"url\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/wp-content\\\/uploads\\\/sites\\\/36\\\/2026\\\/04\\\/product-header.jpg?quality=85&strip=all\",\"contentUrl\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/wp-content\\\/uploads\\\/sites\\\/36\\\/2026\\\/04\\\/product-header.jpg?quality=85&strip=all\",\"width\":3840,\"height\":1280},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/product\\\/pr-400-led-integrating-sphere-source\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"PR-400 LED Integrating Sphere Source\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/#website\",\"url\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/\",\"name\":\"Precision Medicine\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/novanta.com\\\/precision-medicine\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"PR-400 LED Integrating Sphere Source - Precision Medicine","description":"PR-400 LED integrating sphere source delivers uniform, stable illumination for precise light and color measurement, calibration, and display testing applications.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/","og_locale":"en_US","og_type":"article","og_title":"PR-400 LED Integrating Sphere Source","og_description":"PR-400 LED integrating sphere source delivers uniform, stable illumination for precise light and color measurement, calibration, and display testing applications.","og_url":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/","og_site_name":"Precision Medicine","article_modified_time":"2026-06-04T14:45:56+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?resize=1200,675","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/","url":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/","name":"PR-400 LED Integrating Sphere Source - Precision Medicine","isPartOf":{"@id":"https:\/\/novanta.com\/precision-medicine\/#website"},"primaryImageOfPage":{"@id":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/#primaryimage"},"image":{"@id":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/#primaryimage"},"thumbnailUrl":"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?quality=85&strip=all","datePublished":"2026-04-24T08:17:55+00:00","dateModified":"2026-06-04T14:45:56+00:00","description":"PR-400 LED integrating sphere source delivers uniform, stable illumination for precise light and color measurement, calibration, and display testing applications.","breadcrumb":{"@id":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/#primaryimage","url":"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?quality=85&strip=all","contentUrl":"https:\/\/novanta.com\/precision-medicine\/wp-content\/uploads\/sites\/36\/2026\/04\/product-header.jpg?quality=85&strip=all","width":3840,"height":1280},{"@type":"BreadcrumbList","@id":"https:\/\/novanta.com\/precision-medicine\/product\/pr-400-led-integrating-sphere-source\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/novanta.com\/precision-medicine\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/novanta.com\/precision-medicine\/shop\/"},{"@type":"ListItem","position":3,"name":"PR-400 LED Integrating Sphere Source"}]},{"@type":"WebSite","@id":"https:\/\/novanta.com\/precision-medicine\/#website","url":"https:\/\/novanta.com\/precision-medicine\/","name":"Precision Medicine","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/novanta.com\/precision-medicine\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/product\/1692","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":11,"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/product\/1692\/revisions"}],"predecessor-version":[{"id":6457,"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/product\/1692\/revisions\/6457"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/media\/546"}],"wp:attachment":[{"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/media?parent=1692"}],"wp:term":[{"taxonomy":"product_type","embeddable":true,"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/product_type?post=1692"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/product_cat?post=1692"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/novanta.com\/precision-medicine\/wp-json\/wp\/v2\/product_tag?post=1692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}