{"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\/pt\/outdoor-floodlights-beam-angle-selection-guide\/","title":{"rendered":"Leitura essencial para a ilumina\u00e7\u00e3o de exterior - Guia de sele\u00e7\u00e3o para projectores de exterior e arruelas de parede"},"content":{"rendered":"<div class=\"row align-center\"  id=\"row-120779936\">\n\n\t<div id=\"col-1693634864\" 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-491091320\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-491091320 {\n  padding-top: 100px;\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-689592972\">\n\n\t<div id=\"col-244607846\" 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-2484687159\" class=\"text\">\n\t\t\n<h2><strong>1. Sabe realmente como avaliar o \u00e2ngulo de feixe de um projetor de exterior?<\/strong><\/h2>\n\t\t\n<style>\n#text-2484687159 {\n  font-size: 0.75rem;\n  color: rgb(255, 255, 255);\n}\n#text-2484687159 > * {\n  color: rgb(255, 255, 255);\n}\n@media (min-width:550px) {\n  #text-2484687159 {\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-244607846 > .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-207312742\" class=\"text\">\n\t\t\n<p>Foi levantada uma quest\u00e3o: Nos requisitos t\u00e9cnicos para aplica\u00e7\u00f5es de ilumina\u00e7\u00e3o nocturna com LED, na tabela de efic\u00e1cia da lumin\u00e1ria para projectores LED de luz branca, a nota 1 indica B10% indica o \u00e2ngulo de feixe calculado com base em 10% do valor da intensidade luminosa m\u00e1xima, enquanto B50% indica o \u00e2ngulo de feixe calculado com base em 50% do valor da intensidade luminosa m\u00e1xima. Como se deve interpretar exatamente B10% neste contexto?<\/p>\n\t\t\n<style>\n#text-207312742 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-207312742 {\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_678540279\">\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_678540279 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-1677030768\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1677030768 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-2194596214\" class=\"text\">\n\t\t\n<p>B10% refere-se, de facto, a um \u00e2ngulo de intensidade luminosa 10%, tamb\u00e9m conhecido como \u00e2ngulo de intensidade luminosa 1\/10, normalmente designado por \u00e2ngulo de campo. Em aplica\u00e7\u00f5es pr\u00e1ticas, aparece frequentemente nas normas IES norte-americanas e \u00e9 frequentemente encontrado nas folhas de especifica\u00e7\u00f5es de projectores de exterior de f\u00e1brica. Tamb\u00e9m \u00e9 utilizado nos requisitos t\u00e9cnicos para aplica\u00e7\u00f5es de ilumina\u00e7\u00e3o nocturna com LED.<\/p>\n\t\t\n<style>\n#text-2194596214 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-2194596214 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1821048726\" class=\"text\">\n\t\t\n<p>Normalmente, examinamos o \u00e2ngulo do feixe, mais frequentemente o \u00e2ngulo de meia intensidade - ou seja, o \u00e2ngulo correspondente ao valor da intensidade luminosa igual a metade da intensidade luminosa m\u00e1xima. Tomando o diagrama abaixo como exemplo, o valor m\u00e1ximo da intensidade luminosa da curva de distribui\u00e7\u00e3o da luz \u00e9 12,889 cd. Dividi o intervalo de intensidade em dez segmentos iguais. Assim, a posi\u00e7\u00e3o da intensidade 50% corresponde ao c\u00edrculo no quinto segmento. O \u00e2ngulo formado entre a reta que liga o ponto de intersec\u00e7\u00e3o da circunfer\u00eancia do quinto segmento com a curva de distribui\u00e7\u00e3o da luz e a origem \u00e9 o \u00e2ngulo de meia intensidade. No diagrama abaixo, o \u00e2ngulo de meia-intensidade da curva de distribui\u00e7\u00e3o da luz \u00e9 de 29\u00b0.<\/p>\n\t\t\n<style>\n#text-1821048726 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-1821048726 {\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_211431754\">\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_211431754 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-1334601480\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1334601480 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3234815912\" class=\"text\">\n\t\t\n<p>Do mesmo modo, o \u00e2ngulo de intensidade luminosa do 10% \u00e9 determinado dividindo o valor m\u00e1ximo da intensidade luminosa em dez partes iguais e, em seguida, tomando o \u00e2ngulo formado pela linha que liga o ponto de intersec\u00e7\u00e3o do primeiro c\u00edrculo de segmentos iguais com a curva de distribui\u00e7\u00e3o da luz e a origem. Como mostra a figura abaixo, o \u00e2ngulo de intensidade luminosa do 10% \u00e9 de 47\u00b0.<\/p>\n\t\t\n<style>\n#text-3234815912 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3234815912 {\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_1457756696\">\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_1457756696 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-160424093\" class=\"text\">\n\t\t\n<p>O texto acima explica como ler o \u00e2ngulo para o \u00e2ngulo de intensidade luminosa do 10%.<\/p>\n\t\t\n<style>\n#text-160424093 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-160424093 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-85765943\" class=\"text\">\n\t\t\n<p>Muitos poder\u00e3o dizer que uma curva de distribui\u00e7\u00e3o luminosa por si s\u00f3 \u00e9 bastante dif\u00edcil de interpretar; as que constam dos cat\u00e1logos impressos tendem a ser bastante pequenas, tornando dif\u00edcil discernir os \u00e2ngulos.<\/p>\n\t\t\n<style>\n#text-85765943 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-85765943 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3587712581\" class=\"text\">\n\t\t\n<p>Se tivermos o ficheiro IES fornecido pelo fabricante, abri-lo diretamente no software para leitura \u00e9 bastante conveniente. Tomando como exemplo a curva de distribui\u00e7\u00e3o luminosa mencionada anteriormente, quando aberta num software, \u00e9 apresentada como mostra a figura abaixo.<\/p>\n\t\t\n<style>\n#text-3587712581 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3587712581 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-565976326\">\n\n\t<div id=\"col-533223269\" 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_363849813\">\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_363849813 {\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-3718262272\" class=\"text\">\n\t\t\n<p>Ao abrir a leitura de par\u00e2metros atrav\u00e9s do software, ser\u00e3o apresentados os seguintes par\u00e2metros, incluindo o \u00e2ngulo de intensidade da luz do 50% e o \u00e2ngulo de intensidade da luz do 10%. A imagem abaixo mostra 29,2\u00b0 e 47,6\u00b0, respetivamente, o que est\u00e1 em conformidade com as nossas leituras manuais.<\/p>\n\t\t\n<style>\n#text-3718262272 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3718262272 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n<div class=\"row\"  id=\"row-1462444689\">\n\n\t<div id=\"col-616537349\" 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_575581100\">\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_575581100 {\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-26898711\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-26898711 {\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-1011531666\">\n\n\t<div id=\"col-1799592022\" 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-1714404862\">\n\n\t<div id=\"col-1683968339\" 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-2608213484\" class=\"text\">\n\t\t\n<h2><strong>2. Classifica\u00e7\u00e3o e sele\u00e7\u00e3o de projectores de exterior<\/strong><\/h2>\n\t\t\n<style>\n#text-2608213484 {\n  font-size: 0.75rem;\n  color: rgb(255, 255, 255);\n}\n#text-2608213484 > * {\n  color: rgb(255, 255, 255);\n}\n@media (min-width:550px) {\n  #text-2608213484 {\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-1683968339 > .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-1291022198\" class=\"text\">\n\t\t\n<p>Dado que o \u00e2ngulo de feixe dos projectores para exteriores \u00e9 medido no \u00e2ngulo em que se regista 1\/10 da intensidade luminosa, as classifica\u00e7\u00f5es que se seguem s\u00e3o tamb\u00e9m categorizadas de acordo com o \u00e2ngulo de 1\/10 da intensidade luminosa.<\/p>\n\t\t\n<style>\n#text-1291022198 {\n  font-size: 0.75rem;\n  line-height: 1.5;\n}\n@media (min-width:550px) {\n  #text-1291022198 {\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_1486657381\">\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_1486657381 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-691258391\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-691258391 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1641404524\" class=\"text\">\n\t\t\n<p>De acordo com a classifica\u00e7\u00e3o de projectores da NEMA (National Electrical Manufacturers Association), os \u00e2ngulos de feixe dos projectores padr\u00e3o s\u00e3o classificados da seguinte forma.<\/p>\n\t\t\n<style>\n#text-1641404524 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-1641404524 {\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_1755298708\">\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_1755298708 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-4238291984\" class=\"text\">\n\t\t\n<p>A tabela classifica os \u00e2ngulos de feixe dos projectores em sete classes, cada uma com a sua pr\u00f3pria gama de \u00e2ngulos especificada<\/p>\n\t\t\n<style>\n#text-4238291984 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-4238291984 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1979751130\" class=\"text\">\n\t\t\n<p>As dist\u00e2ncias de proje\u00e7\u00e3o listadas na tabela podem servir como uma refer\u00eancia geral; a maioria dos projectores na Am\u00e9rica do Norte s\u00e3o classificados de acordo com estas especifica\u00e7\u00f5es.<\/p>\n\t\t\n<style>\n#text-1979751130 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-1979751130 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-50911798\" class=\"text\">\n\t\t\n<p>Por exemplo, os projectores com um \u00e2ngulo de feixe de 1\/10, entre 10\u00b0 e 18\u00b0, podem projetar mais de 75 metros; os que t\u00eam um \u00e2ngulo de feixe de 18\u00b0 a 29\u00b0 t\u00eam uma dist\u00e2ncia de proje\u00e7\u00e3o de 65 a 75 metros, e assim por diante.<\/p>\n\t\t\n<style>\n#text-50911798 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-50911798 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3141345642\" class=\"text\">\n\t\t\n<p>Para aplica\u00e7\u00f5es de projectores exteriores, este \u00e2ngulo e dist\u00e2ncia podem servir de refer\u00eancia.<\/p>\n\t\t\n<style>\n#text-3141345642 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3141345642 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-846439064\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-846439064 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-3503496925\" class=\"text\">\n\t\t\n<p>No entanto, as lumin\u00e1rias de exterior muitas vezes n\u00e3o produzem um padr\u00e3o de luz sim\u00e9trico circular; frequentemente, geram um padr\u00e3o de luz assim\u00e9trico. Tomemos como exemplo as lumin\u00e1rias lineares para lavagem de paredes utilizadas em fachadas exteriores de edif\u00edcios. Teoricamente, estas lumin\u00e1rias de lavagem de paredes para fachadas exteriores s\u00e3o tamb\u00e9m projectores, especificamente projectores com uma distribui\u00e7\u00e3o de luz assim\u00e9trica. Como se representa, ent\u00e3o, esta classifica\u00e7\u00e3o de distribui\u00e7\u00e3o assim\u00e9trica da luz?<\/p>\n\t\t\n<style>\n#text-3503496925 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-3503496925 {\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_863642643\">\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_863642643 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-480633025\" class=\"text\">\n\t\t\n<p>Podemos classificar os \u00e2ngulos de feixe em ambas as direc\u00e7\u00f5es de acordo com o sistema de classifica\u00e7\u00e3o NEMA, conforme ilustrado no diagrama acima. Por exemplo, o padr\u00e3o de feixe de uma lumin\u00e1ria de lavagem de parede de 20\u00b0\u00d760\u00b0 para fachadas exteriores pode ser indicado como NEMA 2\u00d74. A dist\u00e2ncia de lavagem da parede pode ainda ser referenciada a partir da tabela de dist\u00e2ncias de proje\u00e7\u00e3o; a NEMA 2\u00d74 atinge normalmente uma dist\u00e2ncia de lavagem da parede de aproximadamente 65 metros de altura.<\/p>\n\t\t\n<style>\n#text-480633025 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-480633025 {\n    font-size: 1.1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"gap-731121959\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-731121959 {\n  padding-top: 30px;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1959664670\" class=\"text\">\n\t\t\n<p>E a ilumina\u00e7\u00e3o desportiva? Classificamo-la dentro da mesma gama angular, embora existam ligeiras varia\u00e7\u00f5es na classifica\u00e7\u00e3o e na aplica\u00e7\u00e3o.<\/p>\n\t\t\n<style>\n#text-1959664670 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-1959664670 {\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_1130372497\">\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_1130372497 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-753593878\" class=\"text\">\n\t\t\n<p>Na ilumina\u00e7\u00e3o desportiva, classificamos os \u00e2ngulos de feixe diretamente em estreitos, m\u00e9dios e largos, adaptando-os depois \u00e0s respectivas aplica\u00e7\u00f5es. Na pr\u00e1tica, isto pode servir como uma refer\u00eancia geral.<\/p>\n\t\t\n<style>\n#text-753593878 {\n  font-size: 0.75rem;\n  line-height: 1.75;\n}\n@media (min-width:550px) {\n  #text-753593878 {\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-1939103780\" class=\"gap-element clearfix\" style=\"display:block; height:auto;\">\n\t\t\n<style>\n#gap-1939103780 {\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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