[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.prodek.cz\/lumeny-watty-a-luxy-kdo-se-v-tom-ma-vyznat\/#Article","mainEntityOfPage":"https:\/\/www.prodek.cz\/lumeny-watty-a-luxy-kdo-se-v-tom-ma-vyznat\/","headline":"Lumeny, watty a luxy, kdo se v tom m\u00e1 vyznat?","name":"Lumeny, watty a luxy, kdo se v tom m\u00e1 vyznat?","description":"Existuje normativ, podle kter\u00e9ho bychom m\u011bli v\u00a0obytn\u00e9 m\u00edstnosti pob\u00fdvat p\u0159i um\u011bl\u00e9m osv\u011btlen\u00ed ur\u010dit\u00e9 intenzity. Ta by se m\u011bla pohybovat v\u00a0rozmez\u00ed od 150 do 500 lx (lux\u016f) v\u00a0z\u00e1vislosti na typu m\u00edstnosti a jej\u00edm vyu\u017e\u00edv\u00e1n\u00ed. Co to ale pro n\u00e1s prakticky znamen\u00e1? Co je to ten lux, kdy\u017e se o n\u011bm nikde nic nedozv\u00edme, na \u017e\u00e1rovk\u00e1ch tato hodnota uvedena nen\u00ed, a p\u0159esto bychom r\u00e1di v\u011bd\u011bli, jak m\u00edstnost nasv\u00edtit, aby byl sv\u011btla dostatek. Zvl\u00e1\u0161\u0165 v\u00a0dne\u0161n\u00ed dob\u011b, kdy se klasick\u00e9 \u017e\u00e1rovky ji\u017e neprod\u00e1vaj\u00ed, a kdy \u00fasporn\u00e1 LED diodov\u00e1 sv\u00edtidla maj\u00ed hodnotu p\u0159\u00edkonu mnohem ni\u017e\u0161\u00ed. Jak silnou \u017e\u00e1rovku tedy m\u00e1me namontovat nad kuchy\u0148sk\u00fd st\u016fl, jakou do lo\u017enice, jakou k\u00a0psac\u00edmu stolu atd.? Kolik sv\u011btla pot\u0159ebujeme? Na krabi\u010dce LED \u017e\u00e1rovky bychom m\u011bli objevit \u00fadaj, kolik lumen\u016f \u017e\u00e1rovka poskytuje. To znamen\u00e1, jak\u00fd sv\u011bteln\u00fd tok je schopna \u017e\u00e1rovka vyprodukovat. Pochopiteln\u011b zde plat\u00ed p\u0159\u00edm\u00e1 \u00fam\u011bra, \u010d\u00edm vy\u0161\u0161\u00ed je v\u00fdkon \u017e\u00e1rovky, t\u00edm vy\u0161\u0161\u00ed sv\u011bteln\u00fd tok vyd\u00e1v\u00e1. Pro srovn\u00e1n\u00ed tu m\u016f\u017eeme jako p\u0159\u00edklad uv\u00e9st, \u017ee klasick\u00e1 \u017e\u00e1rovka 60 W, kter\u00e9 odpov\u00edd\u00e1 LED diodov\u00e1 \u017e\u00e1rovka 8 W, vyd\u00e1 sv\u011bteln\u00fd tok zhruba 600 lm (lumen\u016f). A k\u00a0\u010demu je n\u00e1m sv\u011bteln\u00fd tok? Mezi doporu\u010dovanou hodnotou osv\u011btlen\u00ed m\u00edstnosti, tedy normativem, kter\u00fd ud\u00e1v\u00e1 300 \u2013 500 lx (lux\u016f) v\u00a0obytn\u00fdch a pracovn\u00edch prostor\u00e1ch, a sv\u011bteln\u00fdm tokem je ur\u010dit\u00fd vztah. Plat\u00ed tu matematick\u00e1 rovnice. \u00a0Abychom zjistili, kolik lux\u016f poskytne ona 60 wattov\u00e1 \u017e\u00e1rovka, mus\u00edme po\u010det lumen\u016f d\u011blit po\u010dtem \u010dtvere\u010dn\u00edch metr\u016f plochy osv\u011btlovan\u00e9 m\u00edstnosti.\u00a0 P\u0159\u00edkladn\u011b, 60 W \u017e\u00e1rovka osv\u00edt\u00ed m\u00edstnost o velikosti 3 x 4 metry (nap\u0159. pracovnu) takto: 600 lm \/ (3m x 4m) = 50 lx (lux\u016f). Kolik lux\u016f pot\u0159ebujeme? Mus\u00edme uva\u017eovat i odraz sv\u011btla v\u00a0m\u00edstnosti, zda je vybavena sv\u011btl\u00fdm nebo tmav\u00fdm n\u00e1bytkem, sv\u011btlou dla\u017ebou, nebo naopak tmav\u00fdm kobercem atd. Tmav\u0161\u00ed m\u00edstnosti sv\u011btlo v\u00edce pohlcuj\u00ed a vy\u017eaduj\u00ed pochopiteln\u011b siln\u011bj\u0161\u00ed osv\u011btlen\u00ed. P\u0159ibli\u017en\u00e9 hodnoty osv\u011btlen\u00ed m\u00edstnost\u00ed jsou n\u00e1sleduj\u00edc\u00ed: \u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Kuchyn\u011b, pracovna, ob\u00fdvac\u00ed pokoj – 250 \u2013 500 lx \u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Koupelna – 150 \u2013 300 lx \u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Schodi\u0161t\u011b, chodby – 30 \u2013 100 lx 4.5\/5 - (8 votes)","datePublished":"2025-08-23","dateModified":"2025-08-23","author":{"@type":"Person","@id":"https:\/\/www.prodek.cz\/author\/#Person","name":"","url":"https:\/\/www.prodek.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/014a645f9f16d49aceddb25e316448c724bd78e7db0ee7a34c29417d5ca39ef1?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/014a645f9f16d49aceddb25e316448c724bd78e7db0ee7a34c29417d5ca39ef1?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"prodek.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.prodek.cz\/wp-content\/uploads\/img_a308257_w2106_t1519374908.jpg","url":"https:\/\/www.prodek.cz\/wp-content\/uploads\/img_a308257_w2106_t1519374908.jpg","height":0,"width":0},"url":"https:\/\/www.prodek.cz\/lumeny-watty-a-luxy-kdo-se-v-tom-ma-vyznat\/","wordCount":393,"articleBody":"Existuje normativ, podle kter\u00e9ho bychom m\u011bli v\u00a0obytn\u00e9 m\u00edstnosti pob\u00fdvat p\u0159i um\u011bl\u00e9m osv\u011btlen\u00ed ur\u010dit\u00e9 intenzity. Ta by se m\u011bla pohybovat v\u00a0rozmez\u00ed od 150 do 500 lx (lux\u016f) v\u00a0z\u00e1vislosti na typu m\u00edstnosti a jej\u00edm vyu\u017e\u00edv\u00e1n\u00ed. Co to ale pro n\u00e1s prakticky znamen\u00e1? Co je to ten lux, kdy\u017e se o n\u011bm nikde nic nedozv\u00edme, na \u017e\u00e1rovk\u00e1ch tato hodnota uvedena nen\u00ed, a p\u0159esto bychom r\u00e1di v\u011bd\u011bli, jak m\u00edstnost nasv\u00edtit, aby byl sv\u011btla dostatek. Zvl\u00e1\u0161\u0165 v\u00a0dne\u0161n\u00ed dob\u011b, kdy se klasick\u00e9 \u017e\u00e1rovky ji\u017e neprod\u00e1vaj\u00ed, a kdy \u00fasporn\u00e1 LED diodov\u00e1 sv\u00edtidla maj\u00ed hodnotu p\u0159\u00edkonu mnohem ni\u017e\u0161\u00ed. Jak silnou \u017e\u00e1rovku tedy m\u00e1me namontovat nad kuchy\u0148sk\u00fd st\u016fl, jakou do lo\u017enice, jakou k\u00a0psac\u00edmu stolu atd.?\tKolik sv\u011btla pot\u0159ebujeme?Na krabi\u010dce LED \u017e\u00e1rovky bychom m\u011bli objevit \u00fadaj, kolik lumen\u016f \u017e\u00e1rovka poskytuje. To znamen\u00e1, jak\u00fd sv\u011bteln\u00fd tok je schopna \u017e\u00e1rovka vyprodukovat. Pochopiteln\u011b zde plat\u00ed p\u0159\u00edm\u00e1 \u00fam\u011bra, \u010d\u00edm vy\u0161\u0161\u00ed je v\u00fdkon \u017e\u00e1rovky, t\u00edm vy\u0161\u0161\u00ed sv\u011bteln\u00fd tok vyd\u00e1v\u00e1. Pro srovn\u00e1n\u00ed tu m\u016f\u017eeme jako p\u0159\u00edklad uv\u00e9st, \u017ee klasick\u00e1 \u017e\u00e1rovka 60 W, kter\u00e9 odpov\u00edd\u00e1 LED diodov\u00e1 \u017e\u00e1rovka 8 W, vyd\u00e1 sv\u011bteln\u00fd tok zhruba 600 lm (lumen\u016f).\tA k\u00a0\u010demu je n\u00e1m sv\u011bteln\u00fd tok?Mezi doporu\u010dovanou hodnotou osv\u011btlen\u00ed m\u00edstnosti, tedy normativem, kter\u00fd ud\u00e1v\u00e1 300 \u2013 500 lx (lux\u016f) v\u00a0obytn\u00fdch a pracovn\u00edch prostor\u00e1ch, a sv\u011bteln\u00fdm tokem je ur\u010dit\u00fd vztah. Plat\u00ed tu matematick\u00e1 rovnice. \u00a0Abychom zjistili, kolik lux\u016f poskytne ona 60 wattov\u00e1 \u017e\u00e1rovka, mus\u00edme po\u010det lumen\u016f d\u011blit po\u010dtem \u010dtvere\u010dn\u00edch metr\u016f plochy osv\u011btlovan\u00e9 m\u00edstnosti.\u00a0 P\u0159\u00edkladn\u011b, 60 W \u017e\u00e1rovka osv\u00edt\u00ed m\u00edstnost o velikosti 3 x 4 metry (nap\u0159. pracovnu) takto: 600 lm \/ (3m x 4m) = 50 lx (lux\u016f).\tKolik lux\u016f pot\u0159ebujeme?Mus\u00edme uva\u017eovat i odraz sv\u011btla v\u00a0m\u00edstnosti, zda je vybavena sv\u011btl\u00fdm nebo tmav\u00fdm n\u00e1bytkem, sv\u011btlou dla\u017ebou, nebo naopak tmav\u00fdm kobercem atd. Tmav\u0161\u00ed m\u00edstnosti sv\u011btlo v\u00edce pohlcuj\u00ed a vy\u017eaduj\u00ed pochopiteln\u011b siln\u011bj\u0161\u00ed osv\u011btlen\u00ed. P\u0159ibli\u017en\u00e9 hodnoty osv\u011btlen\u00ed m\u00edstnost\u00ed jsou n\u00e1sleduj\u00edc\u00ed:\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Kuchyn\u011b, pracovna, ob\u00fdvac\u00ed pokoj – 250 \u2013 500 lx\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Koupelna – 150 \u2013 300 lx\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Schodi\u0161t\u011b, chodby – 30 \u2013 100 lx                                                                                                                                                                                                                                                                                                                                                                                        4.5\/5 - (8 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Lumeny, watty a luxy, kdo se v tom m\u00e1 vyznat?","item":"https:\/\/www.prodek.cz\/lumeny-watty-a-luxy-kdo-se-v-tom-ma-vyznat\/#breadcrumbitem"}]}]