{"id":47483,"date":"2023-03-21T10:24:29","date_gmt":"2023-03-21T10:24:29","guid":{"rendered":"https:\/\/tesla-lighting.cz\/?p=47483"},"modified":"2023-03-21T10:24:31","modified_gmt":"2023-03-21T10:24:31","slug":"teslabikar-7-dil-cri-neboli-podani-barev-led-zarovek","status":"publish","type":"post","link":"https:\/\/tesla-lighting.cz\/en\/teslabikar-7-dil-cri-neboli-podani-barev-led-zarovek\/","title":{"rendered":"TESLAbik\u00e1\u0159 Part 7 CRI or Colour rendering of LED bulbs"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"47483\" class=\"elementor elementor-47483\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-eadc2c5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"eadc2c5\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-200542f\" data-id=\"200542f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-01c09d0 elementor-widget elementor-widget-heading\" data-id=\"01c09d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">TESLAbik\u00e1\u0159 or how to choose the right LED bulb<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d3a858 elementor-widget elementor-widget-heading\" data-id=\"7d3a858\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Part 7 CRI or Colour Rendering Index of LED bulbs<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-63fd4e1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"63fd4e1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5d12deb\" data-id=\"5d12deb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e8d4487 elementor-widget elementor-widget-text-editor\" data-id=\"e8d4487\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><img decoding=\"async\" class=\"alignleft wp-image-47484\" src=\"https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI-300x300.png\" alt=\"\" width=\"51\" height=\"51\" srcset=\"https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI-300x300.png 300w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI-1024x1024.png 1024w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI-150x150.png 150w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI-768x769.png 768w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI-12x12.png 12w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI-600x601.png 600w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI-100x100.png 100w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/CRI.png 1026w\" sizes=\"(max-width: 51px) 100vw, 51px\" \/>We have already written about the effect of temperature, or the colour of light on the human body. And now, as far as colours are concerned, we will continue with CRI values. The CRI (Color Rendering Index), or Color Rendering Index, evaluates the fidelity of color perception when illuminated from an artificial source as the human eye sees it compared to how we would see it in natural sunlight. Numerical values are given in conjunction with the abbreviations CRI or Ra.<\/p><p>The CRI (Ra) value can be as high as 100, so we can see the colours as they really are. The light source therefore has a completely natural colour rendering. Conversely, a value of 0 tells us that we are not able to distinguish colours at all with this lighting.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c730a6 elementor-widget elementor-widget-image\" data-id=\"9c730a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1947\" height=\"564\" src=\"https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/teslabikar_CRI-e1679393901981.jpg\" class=\"attachment-full size-full wp-image-47485\" alt=\"\" srcset=\"https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/teslabikar_CRI-e1679393901981.jpg 1947w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/teslabikar_CRI-e1679393901981-300x87.jpg 300w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/teslabikar_CRI-e1679393901981-1024x297.jpg 1024w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/teslabikar_CRI-e1679393901981-768x222.jpg 768w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/teslabikar_CRI-e1679393901981-1536x445.jpg 1536w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/teslabikar_CRI-e1679393901981-18x5.jpg 18w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/03\/teslabikar_CRI-e1679393901981-600x174.jpg 600w\" sizes=\"(max-width: 1947px) 100vw, 1947px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b0b86d6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b0b86d6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-f0b4de6\" data-id=\"f0b4de6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2507e99 premium-floating-effects-yes elementor-invisible elementor-widget elementor-widget-icon-box\" data-id=\"2507e99\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;premium_fe_easing&quot;:&quot;easeInElastic(1, .6)&quot;,&quot;_animation&quot;:&quot;slideInLeft&quot;,&quot;premium_fe_trigger&quot;:&quot;load&quot;,&quot;premium_fe_direction&quot;:&quot;alternate&quot;,&quot;premium_fe_loop&quot;:&quot;default&quot;}\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tRED OR BROWN APPLE\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tIn some rooms, true colour rendering is very important. The first room that comes to mind is the kitchen or dining room. This is where we process ingredients, store fruit and vegetables and make sure everything looks fresh and appealing - after all, we eat with our eyes. So if we choose a light source with a lower CRI (Ra) for these rooms, fruit and vegetables can look bland and wilted, just like meat or cold cuts. In this case, it is definitely worth looking for an LED bulb with higher colour rendering index values.\nIt's not just about the colours of the food, but also the fact that with low CRI (Ra) values, colours are 'sharper' and affect our overall mood, we may be more likely to feel tired and sleepy, and even spatial orientation may be worse. \t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-b8ec008\" data-id=\"b8ec008\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eb1c57d elementor-invisible elementor-widget elementor-widget-icon-box\" data-id=\"eb1c57d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;slideInRight&quot;}\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tWHAT IS THE STANDARD TODAY?\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tMost LED bulbs have a CRI (Ra) value greater than 80. Even TESLA lighting's LED bulbs have CRI (Ra) values greater than 80. \n<br>\n<br>The standard CRI (Ra) value is 80. If we want to feel comfortable, we recommend this value. There are industries where colour fidelity is very important, whether it is graphic studios, galleries, jewellery shops, beauty salons or medical facilities or production lines etc., then look for LED sources with an even higher colour rendering index.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e1b64c1 elementor-widget elementor-widget-image\" data-id=\"e1b64c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"300\" height=\"71\" src=\"https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/01\/bikar_logo-300x71.png\" class=\"attachment-medium size-medium wp-image-47133\" alt=\"\" srcset=\"https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/01\/bikar_logo-300x71.png 300w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/01\/bikar_logo-600x142.png 600w, https:\/\/tesla-lighting.cz\/wp-content\/uploads\/2023\/01\/bikar_logo.png 610w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-00fca91 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"00fca91\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8990207\" data-id=\"8990207\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f18d58f elementor-widget elementor-widget-text-editor\" data-id=\"f18d58f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0<\/p><p>The next part will be dedicated to the lifetime and switching cycle of LED bulbs, which are in the range of TESLA lighting.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>TESLAbik\u00e1\u0159 aneb jak vybrat spr\u00e1vnou LED \u017e\u00e1rovku 7. d\u00edl CRI neboli index pod\u00e1n\u00ed barev LED \u017e\u00e1rovek U\u017e jsme psali o vlivu teploty, resp. barvy sv\u011btla na lidsk\u00fd organismus. A nyn\u00ed, co se t\u00fd\u010de barev, budeme pokra\u010dovat hodnotami CRI. CRI (Color Rendering Index) neboli index pod\u00e1n\u00ed barev hodnot\u00ed v\u011brnost barevn\u00e9ho vjemu p\u0159i osv\u011btlen\u00ed z um\u011bl\u00e9ho zdroje [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":47492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-47483","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novinky"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>TESLAbik\u00e1\u0159 7. d\u00edl CRI neboli pod\u00e1n\u00ed barev LED \u017e\u00e1rovek<\/title>\n<meta name=\"description\" content=\"Zjist\u011bte v\u00edce o vlivu teploty a barvy sv\u011btla na lidsk\u00fd organismus a objevte hodnoty CRI, kter\u00e9 hodnot\u00ed v\u011brnost barevn\u00e9ho vjemu p\u0159i um\u011bl\u00e9m osv\u011btlen\u00ed v porovn\u00e1n\u00ed s p\u0159irozen\u00fdm slune\u010dn\u00edm sv\u011btlem.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tesla-lighting.cz\/en\/teslabikar-7-dil-cri-neboli-podani-barev-led-zarovek\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TESLAbik\u00e1\u0159 7. d\u00edl CRI neboli pod\u00e1n\u00ed barev LED \u017e\u00e1rovek\" \/>\n<meta property=\"og:description\" content=\"Zjist\u011bte v\u00edce o vlivu teploty a barvy sv\u011btla na lidsk\u00fd organismus a objevte hodnoty CRI, kter\u00e9 hodnot\u00ed v\u011brnost barevn\u00e9ho vjemu p\u0159i um\u011bl\u00e9m osv\u011btlen\u00ed v porovn\u00e1n\u00ed s p\u0159irozen\u00fdm slune\u010dn\u00edm sv\u011btlem.\" \/>\n<meta property=\"og:url\" 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