{"id":2913,"date":"2013-11-07T11:51:51","date_gmt":"2013-11-07T10:51:51","guid":{"rendered":"http:\/\/www.avex-asso.org\/dossiers\/wordpress\/?p=2913"},"modified":"2014-02-10T17:19:20","modified_gmt":"2014-02-10T16:19:20","slug":"leclairage-public-led-la-catastrophe-parfaite","status":"publish","type":"post","link":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/leclairage-public-led-la-catastrophe-parfaite","title":{"rendered":"L\u2019\u00e9clairage public LED la catastrophe parfaite"},"content":{"rendered":"<p>traduction d&rsquo;un article : http:\/\/www.flagstaffdarkskies.org\/for-wonks\/lamp-spectrum-light-pollution\/<\/p>\n<p>Sodium basse pression<br \/>\nSource de lumi\u00e8re quasi monochromatique jaune-orang\u00e9, utilis\u00e9e \u00e0 proximit\u00e9 des grands observatoires et pr\u00e8s de plages \u00e0 tortues\u2026<br \/>\nBrillance sur le ciel : 1.0<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/lps-spectrum.jpg\" width=\"369\" height=\"44\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Sodium haute pression \u2013 lumi\u00e8re dor\u00e9e, utilis\u00e9e partout dans le monde. Brillance sur le ciel : 2.4<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/hps-spectrum.jpg\" width=\"369\" height=\"44\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>FLED LED filtr\u00e9e \u2013 jaune 3000K CCT LED lampe avec un filtre passe-haut qui coupe en dessous de 500 nanom\u00e8tres. Utilis\u00e9e sur l\u2019\u00eele d\u2019Hawa\u00ef : brillance sur le ciel : 3.7<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/fled-spectrum.jpg\" width=\"368\" height=\"44\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>LED 2400K LED chaude de 2400K \u2013 blanc chaud. LED assez peu utilis\u00e9e : brillance sur le ciel : 4.4<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/led-spectrum.jpg\" width=\"368\" height=\"44\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>LED 4100K LED \u201cblanc froid\u201d. LED tr\u00e8s commune dans les installations r\u00e9centes : brillance sur le ciel : 6.6<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/led-spectrum.jpg\" width=\"368\" height=\"44\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>LED 5100K \u201cblanc-bleut\u00e9\u201d. \u00c9galement r\u00e9pandue dans les installations r\u00e9centes \/ brillance sur le ciel : 8.1<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/led-spectrum.jpg\" width=\"368\" height=\"44\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Bref plus les LED sont de couleur froide, plus elles sont nocives.<br \/>\nMAIS ceci est pond\u00e9r\u00e9 par plusieurs facteurs :<br \/>\n1. Les LED DOIVENT \u00eatre orient\u00e9es vers le bas pour \u00e9clairer, car elles sont directionnelles.<br \/>\n2. Ensuite, on peut facilement diminuer leur luminosit\u00e9 ou les \u00e9teindre, ou encore les relier \u00e0 des d\u00e9tecteurs de pr\u00e9sence.<br \/>\nMais rien ne vaudra jamais un sodium basse pression correctement install\u00e9, c&rsquo;est \u00e0 dire orient\u00e9 seulement vers le bas\u2026<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/SkyGlowBrightness1.png\" width=\"622\" height=\"350\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Mod\u00e9lisation \/ comparaison du halo d&rsquo;une source de lumi\u00e8re en sodium basse pression de 10 millions de lumens, a 16km sur le ciel entier<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/SkyGlowLPSbw.jpg\" width=\"802\" height=\"202\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Mod\u00e9lisation avec des leds blanche-bleut\u00e9e (la puissance lumineuse est la m\u00eame, mais la puissance \u00e9lectrique est bien moindre)<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/www.flagstaffdarkskies.org\/WPdev\/wp-content\/uploads\/2013\/10\/SkyGlowLEDbw.jpg\" width=\"802\" height=\"202\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>traduction d&rsquo;un article : http:\/\/www.flagstaffdarkskies.org\/for-wonks\/lamp-spectrum-light-pollution\/ Sodium basse pression Source de lumi\u00e8re quasi monochromatique jaune-orang\u00e9, utilis\u00e9e \u00e0 proximit\u00e9 des grands observatoires<\/p>\n<p><a href=\"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/leclairage-public-led-la-catastrophe-parfaite\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\">L\u2019\u00e9clairage public LED la catastrophe parfaite<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2913","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"_links":{"self":[{"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/posts\/2913","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/comments?post=2913"}],"version-history":[{"count":5,"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/posts\/2913\/revisions"}],"predecessor-version":[{"id":3033,"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/posts\/2913\/revisions\/3033"}],"wp:attachment":[{"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/media?parent=2913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/categories?post=2913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.avex-asso.org\/dossiers\/wordpress\/wp-json\/wp\/v2\/tags?post=2913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}