{"id":2814,"date":"2025-03-12T01:44:13","date_gmt":"2025-03-12T01:44:13","guid":{"rendered":"https:\/\/essenled.com\/?p=2814"},"modified":"2025-03-12T01:44:17","modified_gmt":"2025-03-12T01:44:17","slug":"candela-vs-lux-vs-lumens","status":"publish","type":"post","link":"https:\/\/essenled.com\/cs\/candela-vs-lux-vs-lumens\/","title":{"rendered":"Kandela vs Lux vs Lumeny"},"content":{"rendered":"<p><a href=\"https:\/\/essenled.com\/cs\/direction-of-light-from-luminaires-a-comprehensive-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">Sv\u011btlo <\/a>je z\u00e1kladn\u00edm prvkem na\u0161eho \u017eivota a m\u011b\u0159\u00ed se v r\u016fzn\u00fdch jednotk\u00e1ch. A ka\u017ed\u00e1 jednotka m\u00e1 sv\u016fj specifick\u00fd \u00fa\u010del. Chceme-li porozum\u011bt sv\u011btlu, mus\u00edme nejprve pochopit tyto t\u0159i jednotky. Kandela, lux a lumen jsou t\u0159i z\u00e1kladn\u00ed jednotky pou\u017e\u00edvan\u00e9 pro kvantifikaci r\u016fzn\u00fdch aspekt\u016f sv\u011btla. A\u010dkoli zn\u011bj\u00ed podobn\u011b, p\u0159edstavuj\u00ed r\u016fzn\u00e9 vlastnosti sv\u011btla a pochopen\u00ed rozd\u00edl\u016f mezi kandela vs. lux vs. lumen je nezbytn\u00e9 pro informovan\u00e9 rozhodov\u00e1n\u00ed o \u0159e\u0161en\u00edch osv\u011btlen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-candela\">Co je Candela?<\/h2>\n\n\n\n<p>The candela (cd) is the international unit of luminous intensity that quantifies the brightness of a light source in a specific direction. This measurement helps determine how concentrated a light source&#8217;s output is within a specific angle, which is critical for applications that require focused lighting.<\/p>\n\n\n\n<p>Na rozd\u00edl od jin\u00fdch ukazatel\u016f osv\u011btlen\u00ed nem\u011b\u0159\u00ed kandela celkov\u00e9 mno\u017estv\u00ed vyza\u0159ovan\u00e9ho sv\u011btla, ale jeho sm\u011brovou intenzitu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Candela.webp\" alt=\"Co je Candela\" class=\"wp-image-3166\" srcset=\"https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Candela.webp 800w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Candela-300x169.webp 300w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Candela-768x432.webp 768w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Candela-18x10.webp 18w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Candela-600x338.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-key-characteristics\">Kl\u00ed\u010dov\u00e9 charakteristiky<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sm\u011brov\u00e9 m\u011b\u0159en\u00ed<\/strong>: Kandela hodnot\u00ed intenzitu sv\u011btla v ur\u010dit\u00e9m pevn\u00e9m \u00fahlu (stereoskopick\u00fd \u00fahel). To je rozhoduj\u00edc\u00ed pro aplikace, kde je d\u016fle\u017eit\u00e1 sm\u011brovost, jako jsou sv\u011btlomety nebo reflektory.<\/li>\n\n\n\n<li><strong>Definovan\u00fd standard<\/strong>: Hodnota jedn\u00e9 kandely se p\u0159ibli\u017en\u011b rovn\u00e1 intenzit\u011b sv\u011btla jedn\u00e9 voskov\u00e9 sv\u00ed\u010dky, co\u017e nab\u00edz\u00ed jasn\u00e9 a srovnateln\u00e9 srovn\u00e1n\u00ed.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-why-is-candela-important\">Pro\u010d je Candela d\u016fle\u017eit\u00e1?<\/h3>\n\n\n\n<p>Kandela poskytuje informace o tom, jak \u00fa\u010dinn\u011b m\u016f\u017ee sv\u011bteln\u00fd zdroj osv\u011btlit c\u00edlovou oblast. To je u\u017eite\u010dn\u00e9 zejm\u00e9na ve sc\u00e9n\u00e1\u0159\u00edch vy\u017eaduj\u00edc\u00edch p\u0159esnost, jako jsou:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Zam\u011b\u0159en\u00e9 osv\u011btlen\u00ed<\/strong>: Zaji\u0161\u0165uje optim\u00e1ln\u00ed p\u0159\u00edsun sv\u011btla v po\u017eadovan\u00e9m sm\u011bru, \u010d\u00edm\u017e sni\u017euje pl\u00fdtv\u00e1n\u00ed.<\/li>\n\n\n\n<li><strong>Zv\u00fd\u0161en\u00e1 bezpe\u010dnost<\/strong>: V t\u011bchto oblastech m\u00e1 sm\u011brov\u00e9 sv\u011btlo z\u00e1sadn\u00ed v\u00fdznam pro bezpe\u010dnost. Zv\u00fd\u0161en\u00e1 viditelnost v oblastech, jako jsou vozovky a jevi\u0161t\u011b.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-applications-of-candela\">Aplikace produktu Candela<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Automobilov\u00e9 sv\u011btlomety<\/strong>: Zejm\u00e9na p\u0159i j\u00edzd\u011b v noci je t\u0159eba zajistit, aby byla silnice p\u0159ed v\u00e1mi dostate\u010dn\u011b osv\u011btlena. Z\u00e1rove\u0148 bez osl\u0148ov\u00e1n\u00ed protijedouc\u00edch vozidel.<\/li>\n\n\n\n<li><strong>Sv\u00edtilny<\/strong>: Ur\u010duje intenzitu paprsku pro \u00fakoly vy\u017eaduj\u00edc\u00ed soust\u0159ed\u011bn\u00e9 sv\u011btlo, jako jsou p\u011b\u0161\u00ed t\u00fary nebo p\u00e1trac\u00ed akce.<\/li>\n\n\n\n<li><strong>Osv\u011btlen\u00ed jevi\u0161t\u011b<\/strong>: Poskytuje c\u00edlen\u00fd jas pro konkr\u00e9tn\u00ed oblasti, \u010d\u00edm\u017e zaji\u0161\u0165uje p\u0159ehlednost pro \u00fa\u010dinkuj\u00edc\u00ed i div\u00e1ky.<\/li>\n\n\n\n<li><strong>N\u00e1mo\u0159n\u00ed a leteck\u00e9 sign\u00e1ly<\/strong>: Pou\u017e\u00edv\u00e1 se v naviga\u010dn\u00edch sv\u011btlech k zaji\u0161t\u011bn\u00ed viditelnosti sign\u00e1l\u016f na velk\u00e9 vzd\u00e1lenosti.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-lux\">Co je Lux?<\/h2>\n\n\n\n<p>Lux (lx) je jednotka SI pro intenzitu osv\u011btlen\u00ed, kter\u00e1 m\u011b\u0159\u00ed mno\u017estv\u00ed sv\u011btla dopadaj\u00edc\u00edho na povrch. Ud\u00e1v\u00e1, jak dob\u0159e je plocha osv\u011btlena, a to na z\u00e1klad\u011b intenzity sv\u011btla na metr \u010dtvere\u010dn\u00ed.<\/p>\n\n\n\n<p>Lux (lx) je jednotka osv\u011btlen\u00ed v soustav\u011b SI, kter\u00e1 vyjad\u0159uje sv\u011bteln\u00fd tok (lumeny) dopadaj\u00edc\u00ed na jednotku plochy. To znamen\u00e1, \u017ee 1 lux se rovn\u00e1 sv\u011bteln\u00e9mu toku 1 lumenu rovnom\u011brn\u011b rozlo\u017een\u00e9mu na plo\u0161e 1 metru \u010dtvere\u010dn\u00edho.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lux.webp\" alt=\"Co je Lux\" class=\"wp-image-3169\" srcset=\"https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lux.webp 800w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lux-300x169.webp 300w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lux-768x432.webp 768w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lux-18x10.webp 18w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lux-600x338.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-key-characteristics-0\">Kl\u00ed\u010dov\u00e9 charakteristiky<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>M\u011b\u0159en\u00ed na z\u00e1klad\u011b plochy<\/strong>: Lux p\u0159edstavuje plochu, po kter\u00e9 se \u0161\u00ed\u0159\u00ed sv\u011btlo. Nap\u0159\u00edklad sv\u011btlo o sv\u011bteln\u00e9m toku 100 lumen\u016f soust\u0159ed\u011bn\u00e9 na jeden metr \u010dtvere\u010dn\u00ed vytv\u00e1\u0159\u00ed 100 lux\u016f, ale stejn\u00e9 sv\u011btlo rozpt\u00fdlen\u00e9 na 10 metrech \u010dtvere\u010dn\u00edch vytv\u00e1\u0159\u00ed pouze 10 lux\u016f.<\/li>\n\n\n\n<li><strong>V\u00fdznam pro re\u00e1ln\u00fd sv\u011bt<\/strong>: Lux je rozhoduj\u00edc\u00ed pro posouzen\u00ed, zda je prost\u0159ed\u00ed dostate\u010dn\u011b osv\u011btlen\u00e9 pro konkr\u00e9tn\u00ed \u00fakoly nebo \u00fa\u010dely.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-why-is-lux-important\">Pro\u010d je Lux d\u016fle\u017eit\u00fd?<\/h3>\n\n\n\n<p>Lux pom\u00e1h\u00e1 ur\u010dit, zda sv\u011bteln\u00e9 podm\u00ednky spl\u0148uj\u00ed bezpe\u010dnostn\u00ed a produktivn\u00ed normy v r\u016fzn\u00fdch prost\u0159ed\u00edch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vylep\u0161en\u00fd vizu\u00e1ln\u00ed z\u00e1\u017eitek<\/strong>: P\u0159i n\u00e1vrhu osv\u011btlen\u00ed LED m\u016f\u017ee volba spr\u00e1vn\u00e9 \u00farovn\u011b lux\u016f zlep\u0161it vizu\u00e1ln\u00ed z\u00e1\u017eitek a zv\u00fd\u0161it energetickou \u00fa\u010dinnost.<\/li>\n\n\n\n<li><strong>P\u0159\u00edjemn\u00e9 prost\u0159ed\u00ed<\/strong>: Zabra\u0148uje nadm\u011brn\u00e9mu nebo nedostate\u010dn\u00e9mu osv\u011btlen\u00ed a p\u0159isp\u00edv\u00e1 k pohodl\u00ed v dom\u00e1cnostech a kancel\u00e1\u0159\u00edch.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-applications-of-lux\">Aplikace syst\u00e9mu Lux<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pracovn\u00ed prostory<\/strong>: V kancel\u00e1\u0159\u00edch je \u010dasto vy\u017eadov\u00e1na \u00farove\u0148 lux\u016f kolem 300-500, aby byla zachov\u00e1na produktivita a nedoch\u00e1zelo k \u00fanav\u011b o\u010d\u00ed.<\/li>\n\n\n\n<li><strong>Osv\u011btlen\u00ed domova<\/strong>: Ka\u017ed\u00e1 \u010d\u00e1st m\u00edstnosti vy\u017eaduje jinou \u00farove\u0148 lux\u016f ((ob\u00fdvac\u00ed pokoj 100-300 lx, kuchyn\u011b 300-500 lx).<\/li>\n\n\n\n<li><strong>Pouli\u010dn\u00ed osv\u011btlen\u00ed<\/strong>: Zajistit dostate\u010dn\u00e9 osv\u011btlen\u00ed silnic, aby se zv\u00fd\u0161ila bezpe\u010dnost \u0159idi\u010d\u016f a chodc\u016f. (10-30 lx pro b\u011b\u017en\u00e9 ulice)<\/li>\n\n\n\n<li><strong>Fotografie a film<\/strong>: Pro dosa\u017een\u00ed po\u017eadovan\u00fdch sv\u011bteln\u00fdch efekt\u016f jsou rozhoduj\u00edc\u00ed p\u0159esn\u00e9 \u00farovn\u011b lux\u016f.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-lumen\">Co je Lumen?<\/h2>\n\n\n\n<p>Lumen (lm) je mezin\u00e1rodn\u00ed jednotka sv\u011bteln\u00e9ho toku, kter\u00e1 se pou\u017e\u00edv\u00e1 k vyj\u00e1d\u0159en\u00ed celkov\u00e9ho mno\u017estv\u00ed viditeln\u00e9ho sv\u011btla vyza\u0159ovan\u00e9ho sv\u011bteln\u00fdm zdrojem ve v\u0161ech sm\u011brech. M\u011b\u0159\u00ed celkov\u00fd sv\u011bteln\u00fd v\u00fdkon, nikoli intenzitu sv\u011btla dopadaj\u00edc\u00edho na povrch.<\/p>\n\n\n\n<p>Na rozd\u00edl od kandely, kter\u00e1 zohled\u0148uje sm\u011br, a luxu, kter\u00fd zohled\u0148uje plochu, odr\u00e1\u017e\u00ed lumen celkov\u00fd jas, kter\u00fd m\u016f\u017ee sv\u011bteln\u00fd zdroj vytvo\u0159it.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"900\" height=\"438\" src=\"https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lumen.webp\" alt=\"Co je Lumen\" class=\"wp-image-3168\" srcset=\"https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lumen.webp 900w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lumen-300x146.webp 300w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lumen-768x374.webp 768w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lumen-18x9.webp 18w, https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/What-Is-Lumen-600x292.webp 600w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-key-characteristics-1\">Kl\u00ed\u010dov\u00e9 charakteristiky<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Celkov\u00fd sv\u011bteln\u00fd v\u00fdkon<\/strong>: Lumeny p\u0159edstavuj\u00ed kumulativn\u00ed jas sv\u011bteln\u00e9ho zdroje a jsou nejpou\u017e\u00edvan\u011bj\u0161\u00edm ukazatelem pro porovn\u00e1v\u00e1n\u00ed sv\u011bteln\u00fdch produkt\u016f.<\/li>\n\n\n\n<li><strong>Orientace na spot\u0159ebitele<\/strong>: Lumeny jsou \u010dasto uvedeny na obalech v\u00fdrobk\u016f a pom\u00e1haj\u00ed kupuj\u00edc\u00edm pochopit jas \u017e\u00e1rovky bez ohledu na jej\u00ed spot\u0159ebu energie (p\u0159\u00edkon).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-why-are-lumens-important\">Pro\u010d jsou lumeny d\u016fle\u017eit\u00e9?<\/h3>\n\n\n\n<p>Pochopen\u00ed v\u00fdznamu lumen\u016f m\u016f\u017ee spot\u0159ebitel\u016fm pomoci l\u00e9pe si vybrat osv\u011btlen\u00ed, kter\u00e9 odpov\u00edd\u00e1 jejich pot\u0159eb\u00e1m. Nam\u00edsto toho, aby se spol\u00e9hali pouze na zastaral\u00e9 porovn\u00e1v\u00e1n\u00ed v\u00fdkonu.<\/p>\n\n\n\n<p>Sv\u011bteln\u00e9 toky se li\u0161\u00ed od v\u00fdkonu (watt\u00e1\u017ee), kter\u00fd ud\u00e1v\u00e1 spot\u0159ebu energie, zat\u00edmco sv\u011bteln\u00e9 toky ud\u00e1vaj\u00ed jas. Nap\u0159\u00edklad 60W \u017e\u00e1rovka vyza\u0159uje p\u0159ibli\u017en\u011b 800 lumen\u016f a 10W LED \u017e\u00e1rovka \u2248 800 lm (energeticky \u00fasporn\u011bj\u0161\u00ed).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-applications-of-lumens\">Pou\u017eit\u00ed lumen\u016f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vnit\u0159n\u00ed osv\u011btlen\u00ed<\/strong>: Sv\u011bteln\u00fd tok je kl\u00ed\u010dov\u00fd pro v\u00fdb\u011br \u017e\u00e1rovek pro osv\u011btlen\u00ed ob\u00fdvac\u00edch pokoj\u016f, kuchyn\u00ed a lo\u017enic.<\/li>\n\n\n\n<li><strong>Venkovn\u00ed osv\u011btlen\u00ed<\/strong>: Sv\u011btla s vysok\u00fdm sv\u011bteln\u00fdm tokem jsou ide\u00e1ln\u00ed pro sv\u011btlomety a bezpe\u010dnostn\u00ed \u00fa\u010dely a zaji\u0161\u0165uj\u00ed dostate\u010dnou viditelnost.<\/li>\n\n\n\n<li><strong>Akcentov\u00e9 osv\u011btlen\u00ed<\/strong>: <strong><a href=\"https:\/\/essenled.com\/cs\/what-is-the-brightest-led-strip\/\" target=\"_blank\" rel=\"noreferrer noopener\">LED p\u00e1sky<\/a><\/strong> se specifick\u00fdm sv\u011bteln\u00fdm tokem mohou vytv\u00e1\u0159et efekty okoln\u00edho nebo pracovn\u00edho osv\u011btlen\u00ed.<\/li>\n\n\n\n<li><strong>Energetick\u00e1 \u00fa\u010dinnost<\/strong>: Sv\u011bteln\u00fd tok na watt (lm\/W) je m\u011b\u0159\u00edtkem energetick\u00e9 \u00fa\u010dinnosti, kter\u00e9 pom\u00e1h\u00e1 spot\u0159ebitel\u016fm p\u0159i v\u00fdb\u011bru ekologicky \u0161etrn\u00e9ho osv\u011btlen\u00ed.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-differences-between-candela-vs-lux-vs-lumens\">Kl\u00ed\u010dov\u00e9 rozd\u00edly mezi kandela vs. lux vs. lumeny<\/h2>\n\n\n\n<p>Pochopen\u00ed rozd\u00edl\u016f mezi t\u011bmito ukazateli je z\u00e1sadn\u00ed pro v\u00fdb\u011br spr\u00e1vn\u00fdch \u0159e\u0161en\u00ed osv\u011btlen\u00ed:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Metrick\u00e9<\/strong><\/td><td><strong>Opat\u0159en\u00ed<\/strong><\/td><td><strong>P\u0159\u00edklady aplikac\u00ed<\/strong><\/td><\/tr><tr><td><strong>Candela<\/strong><\/td><td>Intenzita sv\u011btla v dan\u00e9m sm\u011bru<\/td><td>Reflektory, sv\u00edtilny<\/td><\/tr><tr><td><strong>Lux<\/strong><\/td><td>Osv\u011btlen\u00ed povrchu<\/td><td>Kancel\u00e1\u0159e, silnice<\/td><\/tr><tr><td><strong>Lumeny<\/strong><\/td><td>Celkov\u00fd sv\u011bteln\u00fd v\u00fdkon<\/td><td>V\u0161eobecn\u00e9 osv\u011btlen\u00ed, \u017e\u00e1rovky<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><br><strong>Kandela vs. lumeny<\/strong>: Zat\u00edmco lumeny m\u011b\u0159\u00ed celkov\u00e9 sv\u011btlo, kandely m\u011b\u0159\u00ed intenzitu v jednom sm\u011bru.<br><strong>Lux vs. lumeny<\/strong>: Lux zohled\u0148uje plochu, na kter\u00e9 se lumeny rozprost\u00edraj\u00ed, a je tedy relevantn\u011bj\u0161\u00ed pro hodnocen\u00ed distribuce sv\u011btla.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jak spolu souvis\u00ed kandela, lux a lumeny?<\/h2>\n\n\n\n<p>Tyto ukazatele jsou vz\u00e1jemn\u011b propojen\u00e9 a pochopen\u00ed jejich vztahu pom\u00e1h\u00e1 p\u0159i navrhov\u00e1n\u00ed efektivn\u00edch syst\u00e9m\u016f osv\u011btlen\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>p\u0159evod Sv\u011bteln\u00fd tok do Lux<\/strong>: Lux z\u00e1vis\u00ed na vzd\u00e1lenosti a rozlo\u017een\u00ed lumen\u016f. Sv\u011btlo s vysok\u00fdm sv\u011bteln\u00fdm tokem m\u016f\u017ee produkovat m\u00e1lo lux\u016f, pokud je rozpt\u00fdleno na velk\u00e9 plo\u0161e.<\/li>\n\n\n\n<li><strong>Candela do Lux<\/strong>: Kandela p\u0159isp\u00edv\u00e1 k lux\u016fm t\u00edm, \u017ee ur\u010duje sm\u011brovou intenzitu dopadaj\u00edc\u00ed na povrch.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Praktick\u00fd p\u0159\u00edklad:<\/h3>\n\n\n\n<p>Sv\u011bteln\u00fd zdroj o sv\u011bteln\u00e9m toku 1 000 lumen\u016f um\u00edst\u011bn\u00fd ve vzd\u00e1lenosti 1 metr osv\u011btluje plochu o rozloze 1 m2 intenzitou 1 000 lux\u016f. Pokud se plocha zv\u011bt\u0161\u00ed na 10 metr\u016f \u010dtvere\u010dn\u00edch, osv\u011btlenost klesne na 100 lux\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-applications-of-candela-lux-and-lumens\">Pou\u017eit\u00ed kandel, lux\u016f a lumen\u016f<\/h2>\n\n\n\n<p>R\u016fzn\u00e9 sc\u00e9n\u00e1\u0159e kandela vs. lux vs. lumen vy\u017eaduj\u00ed specifick\u00e9 metriky:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Candela<\/strong>: Ide\u00e1ln\u00ed pro c\u00edlen\u00e9 osv\u011btlen\u00ed v divadlech, sv\u011btlometech automobil\u016f nebo maj\u00e1c\u00edch.<\/li>\n\n\n\n<li><strong>Lux<\/strong>: Pro pracovi\u0161t\u011b je z\u00e1sadn\u00ed, proto\u017ee zaji\u0161\u0165uje dodr\u017eov\u00e1n\u00ed bezpe\u010dnostn\u00edch norem a norem produktivity.<\/li>\n\n\n\n<li><strong>Lumeny<\/strong>: U\u017eite\u010dn\u00e9 pro vyhodnocen\u00ed celkov\u00e9ho jasu sv\u011bteln\u00e9ho zdroje p\u0159i v\u00fdb\u011bru LED p\u00e1sk\u016f nebo sv\u00edtidel.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Jak vybrat osv\u011btlen\u00ed podle t\u011bchto ukazatel\u016f?<\/h2>\n\n\n\n<p>P\u0159i v\u00fdb\u011bru spr\u00e1vn\u00e9ho osv\u011btlen\u00ed berte v \u00favahu n\u00e1sleduj\u00edc\u00ed skute\u010dnosti:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u00da\u010del<\/strong>: Ur\u010dete, zda pot\u0159ebujete zam\u011b\u0159en\u00e9 sv\u011btlo (kandela), okoln\u00ed sv\u011btlo (lux) nebo celkov\u00fd jas (lumen).<\/li>\n\n\n\n<li><strong>\u017divotn\u00ed prost\u0159ed\u00ed<\/strong>: U velk\u00fdch ploch d\u00e1vejte p\u0159ednost sv\u011btl\u016fm s vysok\u00fdm sv\u011bteln\u00fdm tokem a \u0161irok\u00fdm vyza\u0159ovac\u00edm \u00fahlem; u pracovn\u00edho osv\u011btlen\u00ed se zam\u011b\u0159te na \u00farove\u0148 lux\u016f.<\/li>\n\n\n\n<li><strong>Normy<\/strong>: Viz normy osv\u011btlen\u00ed pro konkr\u00e9tn\u00ed aplikace, nap\u0159\u00edklad 300 lux\u016f pro kancel\u00e1\u0159sk\u00e9 stoly nebo 20 lux\u016f pro chodby.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-tips-for-theoretical-analysis-of-light-measurement\">Tipy pro teoretickou anal\u00fdzu m\u011b\u0159en\u00ed sv\u011btla<\/h2>\n\n\n\n<p>When discussing lighting measurement, we often come across misconceptions about the terms lumens, candela, and lux. Let&#8217;s analyze these common theories now.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-higher-lumens-do-not-mean-better-lighting\">1. <strong>Vy\u0161\u0161\u00ed sv\u00edtivost neznamen\u00e1 lep\u0161\u00ed osv\u011btlen\u00ed<\/strong><\/h3>\n\n\n\n<p>Lumeny m\u011b\u0159\u00ed celkov\u00fd sv\u011bteln\u00fd v\u00fdkon, ale nezohled\u0148uj\u00ed rozlo\u017een\u00ed nebo sm\u011br sv\u011btla. Reflektor s v\u00fdkonem 1 000 lumen\u016f m\u016f\u017ee \u00fa\u010dinn\u011b osv\u011btlit malou soust\u0159ed\u011bnou oblast, ale okoln\u00ed prostor ztlum\u00ed.<\/p>\n\n\n\n<p>Naopak rovnom\u011brn\u011b rozpt\u00fdlen\u00e9 sv\u011btlo s men\u0161\u00edm po\u010dtem lumen\u016f m\u016f\u017ee poskytnout lep\u0161\u00ed celkov\u00e9 osv\u011btlen\u00ed ve v\u011bt\u0161\u00ed m\u00edstnosti.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-candela-does-not-equal-brightness\">2. <strong>Kandela nerovn\u00e1 se jas<\/strong><\/h3>\n\n\n\n<p>Kandela m\u011b\u0159\u00ed intenzitu sv\u011btla v ur\u010dit\u00e9m sm\u011bru, ale nep\u0159edstavuje celkov\u00fd jas. Nap\u0159\u00edklad sv\u00edtilna s kandelou 200 soust\u0159ed\u00ed sv\u011btlo do \u00fazk\u00e9ho paprsku, tak\u017ee se v c\u00edlov\u00e9 oblasti jev\u00ed jako velmi jasn\u00e1.<\/p>\n\n\n\n<p>Reflektory s ni\u017e\u0161\u00edmi hodnotami kandela rozptyluj\u00ed sv\u011btlo na v\u011bt\u0161\u00ed plochu, osv\u011btluj\u00ed v\u011bt\u0161\u00ed prostor, ale s men\u0161\u00ed sm\u011brovou intenzitou.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-lux-is-not-a-fixed-value\">3. <strong>Lux nen\u00ed pevn\u00e1 hodnota<\/strong><\/h3>\n\n\n\n<p>Lux je m\u00edra osv\u011btlen\u00ed, kter\u00e1 z\u00e1vis\u00ed na vzd\u00e1lenosti od zdroje sv\u011btla a na tom, jak je sv\u011btlo rozpt\u00fdleno po plo\u0161e.<\/p>\n\n\n\n<p>Podle inverzn\u00edho kvadratick\u00e9ho z\u00e1kona se luxy sni\u017euj\u00ed s rostouc\u00ed vzd\u00e1lenost\u00ed od zdroje sv\u011btla. Podobn\u011b \u00fazk\u00fd sv\u011bteln\u00fd paprsek vyvol\u00e1 na povrchu vy\u0161\u0161\u00ed hodnotu lux\u016f ne\u017e \u0161irok\u00fd sv\u011bteln\u00fd paprsek ve stejn\u00e9 vzd\u00e1lenosti.<\/p>\n\n\n\n<p>\u00darove\u0148 lux\u016f lze proto upravit zm\u011bnou polohy, \u00fahlu nebo typu sv\u011bteln\u00e9ho zdroje. Jedn\u00e1 se o dynamick\u00e9 m\u011b\u0159en\u00ed z\u00e1visl\u00e9 na situaci.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p>Pochopen\u00ed rozd\u00edl\u016f mezi kandelami a luxy a lumeny je pro chytr\u00fd v\u00fdb\u011br osv\u011btlen\u00ed z\u00e1sadn\u00ed. Ka\u017ed\u00e1 z t\u011bchto metrik slou\u017e\u00ed k jin\u00e9mu \u00fa\u010delu: kandela se zam\u011b\u0159uje na intenzitu, lux m\u011b\u0159\u00ed osv\u011btlenost povrchu a lumeny ud\u00e1vaj\u00ed celkov\u00fd jas. Zv\u00e1\u017e\u00edte-li tyto metriky na z\u00e1klad\u011b sv\u00fdch pot\u0159eb, m\u016f\u017eete si vybrat osv\u011btlen\u00ed, kter\u00e9 zvy\u0161uje funk\u010dnost, bezpe\u010dnost a estetiku v jak\u00e9mkoli prost\u0159ed\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs\">Nej\u010dast\u011bj\u0161\u00ed dotazy<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1741145437602\"><strong class=\"schema-faq-question\">Co je to Lumeny (lm)?<\/strong> <p class=\"schema-faq-answer\">S t\u00edmto pojmem se setk\u00e1v\u00e1m v\u017edy, kdy\u017e vyb\u00edr\u00e1m sv\u00edtidlo. Lumeny (lm) jsou m\u00edrou celkov\u00e9ho sv\u011bteln\u00e9ho toku vyza\u0159ovan\u00e9ho sv\u011bteln\u00fdm zdrojem, tj. celkov\u00e9ho v\u00fdkonu viditeln\u00e9ho sv\u011btla. \u010c\u00edm vy\u0161\u0161\u00ed je hodnota lumen\u016f, t\u00edm je sv\u011bteln\u00fd zdroj jasn\u011bj\u0161\u00ed.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1741145439139\"><strong class=\"schema-faq-question\">Co je to lux (lx)?<\/strong> <p class=\"schema-faq-answer\">Lux (lx) je jednotka osv\u011btlen\u00ed, kter\u00e1 ud\u00e1v\u00e1 mno\u017estv\u00ed sv\u011btla rozlo\u017een\u00e9ho na jednotku plochy. Nap\u0159\u00edklad lampa s v\u00fdkonem 1000 lm rovnom\u011brn\u011b oz\u00e1\u0159\u00ed plochu 10 metr\u016f \u010dtvere\u010dn\u00edch a osv\u011btlenost je 100 lx.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1741145440207\"><strong class=\"schema-faq-question\">Co je Candela (cd)?<\/strong> <p class=\"schema-faq-answer\">Kandela (cd) je jednotka intenzity sv\u011btla, kter\u00e1 ud\u00e1v\u00e1 mno\u017estv\u00ed sv\u011btla vyza\u0159ovan\u00e9ho zdrojem sv\u011btla v ur\u010dit\u00e9m sm\u011bru. 1 cd odpov\u00edd\u00e1 intenzit\u011b sv\u011btla 1 lm v 1 steradi\u00e1nu.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1741145441050\"><strong class=\"schema-faq-question\">Znamen\u00e1 lampa s vy\u0161\u0161\u00ed sv\u00edtivost\u00ed lep\u0161\u00ed osv\u011btlen\u00ed?<\/strong> <p class=\"schema-faq-answer\">Nemus\u00ed to tak b\u00fdt, proto\u017ee lumeny p\u0159edstavuj\u00ed celkov\u00e9 mno\u017estv\u00ed sv\u011btla. Pokud v\u0161ak nen\u00ed sv\u011btlo spr\u00e1vn\u011b zaost\u0159eno nebo je rozlo\u017eeno nerovnom\u011brn\u011b, nemus\u00ed b\u00fdt sv\u011bteln\u00fd efekt ide\u00e1ln\u00ed.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1741145442515\"><strong class=\"schema-faq-question\">Pro\u010d maj\u00ed sv\u011btlomety automobil\u016f vysok\u00e9 kandely, ale n\u00edzk\u00fd lumen?<\/strong> <p class=\"schema-faq-answer\">Sv\u011btlomety automobil\u016f mus\u00ed soust\u0159edit sv\u011btlo do velk\u00e9 vzd\u00e1lenosti, proto maj\u00ed vysok\u00e9 kandely (vysokou intenzitu sv\u011btla). Vzhledem k mal\u00e9mu \u00fahlu vyza\u0159ov\u00e1n\u00ed v\u0161ak celkov\u00e1 hodnota sv\u011bteln\u00e9ho toku nemus\u00ed b\u00fdt tak vysok\u00e1 jako u b\u011b\u017en\u00fdch dom\u00e1c\u00edch \u017e\u00e1rovek.<\/p> <\/div> <\/div>","protected":false},"excerpt":{"rendered":"<p>Light is an essential element in our lives and is measured in a variety of units. And each unit has a specific purpose. If we want to understand light, we must first understand these three units. Candela, lux and lumen are the three basic units used to quantify different aspects of light. Although they sound&#8230;<\/p>","protected":false},"author":1,"featured_media":3167,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1],"tags":[974],"class_list":["post-2814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-candela-vs-lux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.3 (Yoast SEO v26.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Candela vs Lux vs Lumens - ESSENLED<\/title>\n<meta name=\"description\" content=\"Understanding the differences between candela vs lux vs lumens is essential to making smart lighting choices.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/essenled.com\/cs\/candela-vs-lux-vs-lumens\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Candela vs Lux vs Lumens\" \/>\n<meta property=\"og:description\" content=\"Understanding the differences between candela vs lux vs lumens is essential to making smart lighting choices.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/essenled.com\/cs\/candela-vs-lux-vs-lumens\/\" \/>\n<meta property=\"og:site_name\" content=\"ESSENLED\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-12T01:44:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-12T01:44:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/Candela-vs-Lux-vs-Lumens.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"essenled.com\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napsal(a)\" \/>\n\t<meta name=\"twitter:data1\" content=\"essenled.com\" \/>\n\t<meta name=\"twitter:label2\" content=\"Odhadovan\u00e1 doba \u010dten\u00ed\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minut\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/essenled.com\/candela-vs-lux-vs-lumens\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/essenled.com\/candela-vs-lux-vs-lumens\/\"},\"author\":{\"name\":\"essenled.com\",\"@id\":\"https:\/\/essenled.com\/#\/schema\/person\/37cef56e83dc72fba62728896e2604f8\"},\"headline\":\"Candela vs Lux vs Lumens\",\"datePublished\":\"2025-03-12T01:44:13+00:00\",\"dateModified\":\"2025-03-12T01:44:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/essenled.com\/candela-vs-lux-vs-lumens\/\"},\"wordCount\":1659,\"publisher\":{\"@id\":\"https:\/\/essenled.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/essenled.com\/candela-vs-lux-vs-lumens\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/essenled.com\/wp-content\/uploads\/2025\/03\/Candela-vs-Lux-vs-Lumens.webp\",\"keywords\":[\"candela vs lux\"],\"articleSection\":[\"Blog\"],\"inLanguage\":\"cs\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\/\/essenled.com\/candela-vs-lux-vs-lumens\/\",\"url\":\"https:\/\/essenled.com\/candela-vs-lux-vs-lumens\/\",\"name\":\"Candela vs Lux vs Lumens - 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