{"id":4097,"date":"2025-10-16T05:51:31","date_gmt":"2025-10-16T05:51:31","guid":{"rendered":"https:\/\/pergolalights.net\/?p=4097"},"modified":"2026-04-03T07:57:32","modified_gmt":"2026-04-03T07:57:32","slug":"outdoor-floodlights-beam-angle-selection-guide","status":"publish","type":"post","link":"https:\/\/pergolalights.net\/fr\/outdoor-floodlights-beam-angle-selection-guide\/","title":{"rendered":"Essential Reading for Outdoor Lighting - Guide de s\u00e9lection des projecteurs d'ext\u00e9rieur et des l\u00e8che-mur"},"content":{"rendered":"<div class=\"row align-center\"  id=\"row-220208888\">\n\n\t<div id=\"col-86777362\" class=\"col medium-11 small-12 large-11\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"gap-1143425829\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1143425829 {\n  padding-top: 100px;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-100947771\">\n\n\t<div id=\"col-747245834\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\" style=\"background-color:#bc7d4a;\" >\n\t\t\t\n\t\t\t\n\t<div id=\"text-4129684467\" class=\"text\">\n\t\t\n<h2><strong>1. Savez-vous vraiment comment \u00e9valuer l'angle de rayonnement d'un projecteur ext\u00e9rieur ?<\/strong><\/h2>\n\t\t\n<style>\n#text-4129684467 {\n  font-size: 0.75rem;\n  color: rgb(255, 255, 255);\n}\n#text-4129684467 > * {\n  color: rgb(255, 255, 255);\n}\n@media (min-width:550px) {\n  #text-4129684467 {\n    font-size: 1.1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-747245834 > .col-inner {\n  padding: 60px 0px 48px 0px;\n  border-radius: 7px;\n}\n<\/style>\n\t<\/div>\n\n\t\n<\/div>\n\t<div id=\"text-862744565\" class=\"text\">\n\t\t\n<p>Une question a \u00e9t\u00e9 pos\u00e9e : Dans les exigences techniques pour les applications d'\u00e9clairage nocturne \u00e0 LED, dans le tableau d'efficacit\u00e9 des luminaires pour les projecteurs \u00e0 LED \u00e0 lumi\u00e8re blanche, la note 1 indique : B10% indique l'angle de rayonnement calcul\u00e9 sur la base de 10% de la valeur d'intensit\u00e9 lumineuse maximale, tandis que B50% indique l'angle de rayonnement calcul\u00e9 sur la base de 50% de la valeur d'intensit\u00e9 lumineuse maximale. Comment interpr\u00e9ter exactement B10% dans ce contexte ?<\/p>\n\t\t\n<style>\n#text-862744565 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-862744565 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1105939915\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1215\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-scaled.webp\" class=\"attachment-original size-original\" alt=\"Luminaire_efficiency_of_white_light_LED_floodlights\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-scaled.webp 2560w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-800x380.webp 800w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-1400x664.webp 1400w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-768x364.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-1536x729.webp 1536w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-2048x972.webp 2048w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-18x9.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Luminaire_efficiency_of_white_light_LED_floodlights-510x242.webp 510w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1105939915 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-1726047921\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1726047921 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1158183466\" class=\"text\">\n\t\t\n<p>B10% fait en r\u00e9alit\u00e9 r\u00e9f\u00e9rence \u00e0 un angle d'intensit\u00e9 lumineuse 10%, \u00e9galement connu sous le nom d'angle d'intensit\u00e9 lumineuse 1\/10, commun\u00e9ment appel\u00e9 angle de champ. Dans les applications pratiques, il appara\u00eet fr\u00e9quemment dans les normes nord-am\u00e9ricaines de l'IES et se retrouve souvent dans les fiches techniques des projecteurs ext\u00e9rieurs d'usine. Il est \u00e9galement utilis\u00e9 dans les exigences techniques pour les applications d'\u00e9clairage nocturne par LED.<\/p>\n\t\t\n<style>\n#text-1158183466 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-1158183466 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3913869956\" class=\"text\">\n\t\t\n<p>Nous examinons g\u00e9n\u00e9ralement l'angle du faisceau, le plus souvent l'angle de demi-intensit\u00e9, c'est-\u00e0-dire l'angle correspondant \u00e0 la valeur de l'intensit\u00e9 lumineuse \u00e9gale \u00e0 la moiti\u00e9 de l'intensit\u00e9 lumineuse maximale. Si l'on prend l'exemple du diagramme ci-dessous, la valeur maximale de l'intensit\u00e9 lumineuse de la courbe de distribution de la lumi\u00e8re est de 12 889 cd. J'ai divis\u00e9 la plage d'intensit\u00e9 en dix segments \u00e9gaux. Ainsi, la position de l'intensit\u00e9 50% correspond au cercle du cinqui\u00e8me segment. L'angle form\u00e9 entre la ligne reliant le point d'intersection du cercle du cinqui\u00e8me segment avec la courbe de r\u00e9partition de la lumi\u00e8re et l'origine est l'angle de demi-intensit\u00e9. Dans le diagramme ci-dessous, l'angle de demi-intensit\u00e9 de la courbe de distribution de la lumi\u00e8re est de 29\u00b0.<\/p>\n\t\t\n<style>\n#text-3913869956 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3913869956 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1412045704\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1197\" height=\"546\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/half-intensity_angle_of_the_light_distribution_curve_is_29.webp\" class=\"attachment-original size-original\" alt=\"half-intensity_angle_of_the_light_distribution_curve_is_29\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/half-intensity_angle_of_the_light_distribution_curve_is_29.webp 1197w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/half-intensity_angle_of_the_light_distribution_curve_is_29-800x365.webp 800w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/half-intensity_angle_of_the_light_distribution_curve_is_29-768x350.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/half-intensity_angle_of_the_light_distribution_curve_is_29-18x8.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/half-intensity_angle_of_the_light_distribution_curve_is_29-510x233.webp 510w\" sizes=\"auto, (max-width: 1197px) 100vw, 1197px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1412045704 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-422451852\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-422451852 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-940795714\" class=\"text\">\n\t\t\n<p>De m\u00eame, l'angle d'intensit\u00e9 lumineuse 10% est d\u00e9termin\u00e9 en divisant la valeur maximale d'intensit\u00e9 lumineuse en dix parties \u00e9gales, puis en prenant l'angle form\u00e9 par la ligne reliant le point d'intersection du premier cercle de segments \u00e9gaux avec la courbe de r\u00e9partition de la lumi\u00e8re et l'origine. Comme le montre la figure ci-dessous, l'angle d'intensit\u00e9 lumineuse de la 10% est de 47\u00b0.<\/p>\n\t\t\n<style>\n#text-940795714 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-940795714 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1871646753\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1197\" height=\"546\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/the_10_light_intensity_angle_is_47\u00b0.webp\" class=\"attachment-original size-original\" alt=\"the_10%_light_intensity_angle_is_47\u00b0\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/the_10_light_intensity_angle_is_47\u00b0.webp 1197w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/the_10_light_intensity_angle_is_47\u00b0-800x365.webp 800w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/the_10_light_intensity_angle_is_47\u00b0-768x350.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/the_10_light_intensity_angle_is_47\u00b0-18x8.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/the_10_light_intensity_angle_is_47\u00b0-510x233.webp 510w\" sizes=\"auto, (max-width: 1197px) 100vw, 1197px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1871646753 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1459360605\" class=\"text\">\n\t\t\n<p>Ce qui pr\u00e9c\u00e8de explique comment lire l'angle pour l'angle d'intensit\u00e9 lumineuse 10%.<\/p>\n\t\t\n<style>\n#text-1459360605 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-1459360605 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3222937292\" class=\"text\">\n\t\t\n<p>Beaucoup diront qu'une courbe de distribution lumineuse seule est plut\u00f4t difficile \u00e0 interpr\u00e9ter ; celles qui figurent dans les catalogues imprim\u00e9s sont g\u00e9n\u00e9ralement assez petites, ce qui rend les angles difficiles \u00e0 discerner.<\/p>\n\t\t\n<style>\n#text-3222937292 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3222937292 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-2740591891\" class=\"text\">\n\t\t\n<p>Si nous disposons du fichier IES fourni par le fabricant, il est tr\u00e8s pratique de l'ouvrir directement dans le logiciel pour le lire. Si l'on prend l'exemple de la courbe de distribution lumineuse mentionn\u00e9e pr\u00e9c\u00e9demment, lorsqu'elle est ouverte dans le logiciel, elle s'affiche comme indiqu\u00e9 dans la figure ci-dessous.<\/p>\n\t\t\n<style>\n#text-2740591891 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-2740591891 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-1851245906\">\n\n\t<div id=\"col-266295580\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_469757029\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"870\" height=\"870\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file.webp\" class=\"attachment-original size-original\" alt=\"IES_file\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file.webp 870w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-400x400.webp 400w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-800x800.webp 800w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-280x280.webp 280w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-768x768.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-12x12.webp 12w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-247x247.webp 247w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-510x510.webp 510w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-100x100.webp 100w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/IES_file-50x50.webp 50w\" sizes=\"auto, (max-width: 870px) 100vw, 870px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_469757029 {\n  width: 49%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t<div id=\"text-3335557441\" class=\"text\">\n\t\t\n<p>Lors de l'ouverture de la lecture des param\u00e8tres via le logiciel, les param\u00e8tres suivants s'affichent, y compris l'angle d'intensit\u00e9 lumineuse du 50% et l'angle d'intensit\u00e9 lumineuse du 10%. L'image ci-dessous montre respectivement 29,2\u00b0 et 47,6\u00b0, ce qui correspond bien \u00e0 nos relev\u00e9s manuels.<\/p>\n\t\t\n<style>\n#text-3335557441 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3335557441 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-752751962\">\n\n\t<div id=\"col-1641002674\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1174642983\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"250\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/parameter_readout_via_software.webp\" class=\"attachment-original size-original\" alt=\"parameter_readout_via_software\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/parameter_readout_via_software.webp 290w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/parameter_readout_via_software-14x12.webp 14w\" sizes=\"auto, (max-width: 290px) 100vw, 290px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1174642983 {\n  width: 48%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"is-divider divider clearfix\" style=\"max-width:50px;\"><\/div>\n\t<div id=\"gap-1647009424\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1647009424 {\n  padding-top: 100px;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"row align-center\"  id=\"row-1247074857\">\n\n\t<div id=\"col-1018313407\" class=\"col medium-11 small-12 large-11\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<div class=\"row\"  id=\"row-1096190618\">\n\n\t<div id=\"col-711638110\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\" style=\"background-color:#bc7d4a;\" >\n\t\t\t\n\t\t\t\n\t<div id=\"text-1841418523\" class=\"text\">\n\t\t\n<h2><strong>2. Classification et s\u00e9lection des projecteurs ext\u00e9rieurs<\/strong><\/h2>\n\t\t\n<style>\n#text-1841418523 {\n  font-size: 0.75rem;\n  color: rgb(255, 255, 255);\n}\n#text-1841418523 > * {\n  color: rgb(255, 255, 255);\n}\n@media (min-width:550px) {\n  #text-1841418523 {\n    font-size: 1.1rem;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-711638110 > .col-inner {\n  padding: 60px 0px 48px 0px;\n  border-radius: 7px;\n}\n<\/style>\n\t<\/div>\n\n\t\n<\/div>\n\t<div id=\"text-283693306\" class=\"text\">\n\t\t\n<p>Comme l'angle de rayonnement des projecteurs ext\u00e9rieurs est mesur\u00e9 \u00e0 l'angle o\u00f9 1\/10e de l'intensit\u00e9 lumineuse est enregistr\u00e9, les classifications ci-dessous sont \u00e9galement class\u00e9es en fonction de l'angle de 1\/10e de l'intensit\u00e9 lumineuse.<\/p>\n\t\t\n<style>\n#text-283693306 {\n  font-size: 0.75rem;\n  line-height: 1.5;\n}\n@media (min-width:550px) {\n  #text-283693306 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_274197537\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1169\" height=\"612\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/1.10th_luminous_intensity_angle.webp\" class=\"attachment-original size-original\" alt=\"1.10th_luminous_intensity_angle\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/1.10th_luminous_intensity_angle.webp 1169w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/1.10th_luminous_intensity_angle-764x400.webp 764w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/1.10th_luminous_intensity_angle-768x402.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/1.10th_luminous_intensity_angle-18x9.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/1.10th_luminous_intensity_angle-510x267.webp 510w\" sizes=\"auto, (max-width: 1169px) 100vw, 1169px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_274197537 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-1867544154\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1867544154 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-391768275\" class=\"text\">\n\t\t\n<p>Selon la classification des projecteurs \u00e9tablie par la NEMA (National Electrical Manufacturers Association), les angles de rayonnement des projecteurs standard sont class\u00e9s comme suit.<\/p>\n\t\t\n<style>\n#text-391768275 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-391768275 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1879108025\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1197\" height=\"720\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/beam_angles_of_standard_floodlights_are_categorised.webp\" class=\"attachment-original size-original\" alt=\"beam_angles_of_standard_floodlights_are_categorised\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/beam_angles_of_standard_floodlights_are_categorised.webp 1197w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/beam_angles_of_standard_floodlights_are_categorised-665x400.webp 665w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/beam_angles_of_standard_floodlights_are_categorised-768x462.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/beam_angles_of_standard_floodlights_are_categorised-18x12.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/beam_angles_of_standard_floodlights_are_categorised-510x307.webp 510w\" sizes=\"auto, (max-width: 1197px) 100vw, 1197px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1879108025 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-791822361\" class=\"text\">\n\t\t\n<p>Le tableau classe les angles de rayonnement des projecteurs en sept cat\u00e9gories, chacune ayant sa propre plage d'angles sp\u00e9cifi\u00e9e.<\/p>\n\t\t\n<style>\n#text-791822361 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-791822361 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3899550980\" class=\"text\">\n\t\t\n<p>Les distances de projection indiqu\u00e9es dans le tableau peuvent servir de r\u00e9f\u00e9rence g\u00e9n\u00e9rale ; la plupart des projecteurs en Am\u00e9rique du Nord sont class\u00e9s selon ces sp\u00e9cifications.<\/p>\n\t\t\n<style>\n#text-3899550980 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3899550980 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-549541130\" class=\"text\">\n\t\t\n<p>Par exemple, les projecteurs ayant un angle de rayonnement de 1\/10e, allant de 10\u00b0 \u00e0 18\u00b0, peuvent projeter \u00e0 plus de 75 m\u00e8tres ; ceux ayant un angle de rayonnement de 18\u00b0 \u00e0 29\u00b0 ont une distance de projection de 65 \u00e0 75 m\u00e8tres, et ainsi de suite.<\/p>\n\t\t\n<style>\n#text-549541130 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-549541130 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3446387561\" class=\"text\">\n\t\t\n<p>Pour les applications d'\u00e9clairage ext\u00e9rieur, cet angle et cette distance peuvent servir de r\u00e9f\u00e9rence.<\/p>\n\t\t\n<style>\n#text-3446387561 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3446387561 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-1774086246\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1774086246 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-2463927039\" class=\"text\">\n\t\t\n<p>Cependant, les luminaires d'ext\u00e9rieur ne produisent souvent pas un motif lumineux circulaire et sym\u00e9trique, mais plut\u00f4t un motif lumineux asym\u00e9trique. Prenons l'exemple des l\u00e8che-mur lin\u00e9aires utilis\u00e9s sur les fa\u00e7ades ext\u00e9rieures des b\u00e2timents. Th\u00e9oriquement, ces l\u00e8che-mur pour fa\u00e7ades ext\u00e9rieures sont \u00e9galement des projecteurs, et plus pr\u00e9cis\u00e9ment des projecteurs \u00e0 distribution lumineuse asym\u00e9trique. Comment cette classification de la distribution lumineuse asym\u00e9trique est-elle repr\u00e9sent\u00e9e ?<\/p>\n\t\t\n<style>\n#text-2463927039 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-2463927039 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1352103783\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1197\" height=\"414\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/NEMA_classification_system.webp\" class=\"attachment-original size-original\" alt=\"NEMA_classification_system\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/NEMA_classification_system.webp 1197w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/NEMA_classification_system-800x277.webp 800w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/NEMA_classification_system-768x266.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/NEMA_classification_system-18x6.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/NEMA_classification_system-510x176.webp 510w\" sizes=\"auto, (max-width: 1197px) 100vw, 1197px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1352103783 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-4196482717\" class=\"text\">\n\t\t\n<p>Nous pouvons classer les angles de faisceau dans les deux directions selon le syst\u00e8me de classification NEMA, comme illustr\u00e9 dans le diagramme ci-dessus. Par exemple, le diagramme de faisceau d'un luminaire \u00e0 projection murale de 20\u00b0\u00d760\u00b0 pour les fa\u00e7ades ext\u00e9rieures peut \u00eatre d\u00e9sign\u00e9 comme NEMA 2\u00d74. La distance de projection peut toujours \u00eatre r\u00e9f\u00e9renc\u00e9e dans le tableau des distances de projection ; NEMA 2\u00d74 permet g\u00e9n\u00e9ralement d'atteindre une distance de projection d'environ 65 m\u00e8tres en hauteur.<\/p>\n\t\t\n<style>\n#text-4196482717 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-4196482717 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-808077589\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-808077589 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-2539948329\" class=\"text\">\n\t\t\n<p>Qu'en est-il de l'\u00e9clairage sportif ? Nous le classons dans la m\u00eame gamme angulaire, bien qu'il y ait de l\u00e9g\u00e8res variations dans la classification et l'application.<\/p>\n\t\t\n<style>\n#text-2539948329 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-2539948329 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_763650831\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"873\" src=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-scaled.webp\" class=\"attachment-original size-original\" alt=\"Classification_of_Sports_Lighting_Beam_Angles_by_Application-01\" srcset=\"https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-scaled.webp 2560w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-800x273.webp 800w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-1400x477.webp 1400w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-768x262.webp 768w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-1536x524.webp 1536w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-2048x698.webp 2048w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-18x6.webp 18w, https:\/\/pergolalights.net\/wp-content\/uploads\/2025\/10\/Classification_of_Sports_Lighting_Beam_Angles_by_Application-01-510x174.webp 510w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_763650831 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-2143962584\" class=\"text\">\n\t\t\n<p>Dans le domaine de l'\u00e9clairage sportif, nous classons directement les angles de rayonnement en trois cat\u00e9gories : \u00e9troit, moyen et large, que nous adaptons ensuite \u00e0 leurs applications respectives. Dans la pratique, cela peut servir de r\u00e9f\u00e9rence g\u00e9n\u00e9rale.<\/p>\n\t\t\n<style>\n#text-2143962584 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-2143962584 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"is-divider divider clearfix\" style=\"max-width:50px;\"><\/div>\n\t<div id=\"gap-2087138114\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-2087138114 {\n  padding-top: 100px;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":4114,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[84],"tags":[],"class_list":["post-4097","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Learn how to interpret beam angles (B10%, B50%) for outdoor floodlights and wall washers. 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