{"id":13956,"date":"2023-09-03T18:23:23","date_gmt":"2023-09-03T18:23:23","guid":{"rendered":"https:\/\/staging.rayzeek.com\/?p=13956"},"modified":"2023-12-26T08:42:14","modified_gmt":"2023-12-26T08:42:14","slug":"what-is-stray-light","status":"publish","type":"post","link":"https:\/\/staging.rayzeek.com\/pt\/glossary\/what-is-stray-light\/","title":{"rendered":"O que \u00e9 a Luz Dispersa"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-what-is-stray-light\">O que \u00e9 a Luz Dispersa<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Luz parasita refere-se a qualquer luz indesejada que entra num sistema \u00f3tico e interfere com as suas fun\u00e7\u00f5es pretendidas. Pode ocorrer tanto em sistemas de imagem como de proje\u00e7\u00e3o, mas o seu controlo \u00e9 particularmente cr\u00edtico em sistemas de imagem. Existem v\u00e1rias fontes de luz parasita que podem afetar o desempenho de um sistema \u00f3tico. Uma fonte comum \u00e9 a reflex\u00e3o da luz nas superf\u00edcies de montagem mec\u00e2nica dentro do sistema. Estas reflex\u00f5es podem ricochetear nas superf\u00edcies e entrar no percurso de imagem ou proje\u00e7\u00e3o, causando interfer\u00eancias indesejadas.<\/p>\n<div class=\"insert_portfolio_outer_wrapper\"><h3>Inspire-se com os portf\u00f3lios de sensores de movimento da Rayzeek.<\/h3><p>N\u00e3o encontra o que pretende? N\u00e3o se preocupe. Existem sempre formas alternativas de resolver os seus problemas. Talvez um dos nossos portf\u00f3lios possa ajudar.<\/p><div class = \"insert_portfolio_buttons\"><div class = \"insert_portfolio_button_wrapper\"><div><a href = \"https:\/\/www.rayzeek.com\/product-category\/motion-sensors\"><p>Sensores de movimento PIR<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/motion-sensor-switches\"><p>Interruptores com Sensor de Movimento<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/occupancy-vacancy-sensors\"><p>Sensores de Presen\u00e7a<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/products\/rz050\"><p>Sensor de movimento para ar condicionado<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/motion-sensor-light-strip\"><p>Fitas LED com Sensor de Movimento<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/dc-sensor-dimmer\"><p>Sensores de movimento\/Dimmer DC de baixa tens\u00e3o<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/wireless-motion-sensors\"><p>Kits de sensores de movimento sem fios<\/p><\/a><\/div><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Outra fonte de luz parasita \u00e9 a fuga de luz atrav\u00e9s de folgas ou fendas no inv\u00f3lucro do sistema. Se existirem aberturas no inv\u00f3lucro, a luz externa pode entrar no sistema e interferir com a sa\u00edda de luz pretendida. Adicionalmente, a luz parasita pode resultar da dispers\u00e3o da luz por part\u00edculas de poeira ou imperfei\u00e7\u00f5es nas superf\u00edcies \u00f3ticas do sistema. Estas imperfei\u00e7\u00f5es podem fazer com que a luz se disperse em dire\u00e7\u00f5es n\u00e3o pretendidas, originando interfer\u00eancias indesejadas no sistema \u00f3tico. A luz parasita tamb\u00e9m pode ter origem em fontes internas, tais como elementos do sistema que emitem luz devido ao seu pr\u00f3prio calor, especialmente em sistemas sens\u00edveis ao infravermelho. Isto pode introduzir radia\u00e7\u00e3o infravermelha indesejada no sistema, afetando a precis\u00e3o e a qualidade da imagem ou proje\u00e7\u00e3o.<\/p>\n\n\n\n<div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\">Perguntas frequentes<\/h2>\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-is-it-called-when-you-see-glare-around-lights\">Como se Chama Quando se V\u00ea Encadeamento ao Redor das Luzes<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Ver halos ao redor das luzes \u00e9 um fen\u00f3meno conhecido como difra\u00e7\u00e3o. A difra\u00e7\u00e3o ocorre quando a luz se curva ao entrar no olho. Embora os \u00f3culos e as lentes de contacto possam por vezes causar difra\u00e7\u00e3o, esta tamb\u00e9m pode ser um efeito secund\u00e1rio de determinadas doen\u00e7as.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-does-stray-light-mean\">O Que Significa Luz Parasita<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Defini\u00e7\u00e3o. Luz parasita refere-se a qualquer radia\u00e7\u00e3o eletromagn\u00e9tica indesejada que perturba as fun\u00e7\u00f5es pretendidas de um sistema \u00f3tico.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-causes-stray-light\">O Que Causa a Luz Parasita<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">A luz parasita pode ser causada por diversos fatores, tais como imperfei\u00e7\u00f5es no elemento de dispers\u00e3o ou em outras superf\u00edcies \u00f3ticas, efeitos de difra\u00e7\u00e3o, aberra\u00e7\u00f5es \u00f3ticas ou componentes danificados ou desgastados. \u00c9 tamb\u00e9m importante garantir que a luz estranha, como fugas de luz nos compartimentos de c\u00e9lulas ou noutras fronteiras mec\u00e2nicas, seja eliminada.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-how-do-you-determine-stray-light\">Como se Determina a Luz Parasita<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">A luz parasita num instrumento refere-se \u00e0 luz que est\u00e1 presente no instrumento, mas que n\u00e3o corresponde ao comprimento de onda definido no monocromador. Simplificando, se o monocromador estiver definido para 600 nm, qualquer luz que n\u00e3o seja exatamente de 600 nm \u00e9 considerada luz parasita.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-is-the-stray-light-in-a-spectrophotometer\">O Que \u00c9 a Luz Parasita num Espectrofot\u00f3metro<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Num espectrofot\u00f3metro, a luz parasita refere-se \u00e0 luz que contorna a amostra e atinge diretamente o detetor. Esta ocorr\u00eancia pode causar resultados de medi\u00e7\u00e3o imprecisos.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-how-can-we-prevent-stray-light\">Como Podemos Prevenir a Luz Parasita<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Limitar o tamanho da abertura: Ao limitar o tamanho da abertura, podemos prevenir eficazmente que a luz parasita entre no sistema e afete o detetor. Isto \u00e9 particularmente crucial em aplica\u00e7\u00f5es que exigem imagem de elevado contraste, uma vez que at\u00e9 uma quantidade reduzida de luz parasita pode ter um impacto negativo na qualidade da imagem.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-how-does-stray-light-affect-absorbance\">Como \u00c9 Que a Luz Parasita Afeta a Absorv\u00e2ncia<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Ap\u00f3s um curto per\u00edodo de diminui\u00e7\u00e3o, as absorv\u00e2ncias medidas estabilizam \u00e0 medida que atingem os valores de luz parasita do instrumento. Artefactos fotom\u00e9tricos de luz parasita resultam consistentemente em valores de absorv\u00e2ncia inferiores aos valores reais.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-is-stray-light-analysis\">O Que \u00c9 a An\u00e1lise de Luz Parasita<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Em ess\u00eancia, a an\u00e1lise de luz parasita refere-se ao exame da luz que n\u00e3o segue o percurso pretendido dentro de um sistema e que, em vez disso, afeta a qualidade da imagem desejada. \u00c9 crucial avaliar o impacto desta luz parasita no desempenho antes de prosseguir para a prototipagem f\u00edsica.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-is-the-limit-of-stray-light-in-uv\">Qual \u00c9 o Limite de Luz Parasita no UV<\/h3><\/div><\/div>\n\n\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">A luz parasita pode representar um desafio em toda a gama espetral de um espectrofot\u00f3metro, abrangendo as gamas UV, VIS e NIR. Contudo, torna-se cada vez mais problem\u00e1tica \u00e0 medida que se aproxima da gama UV, especificamente no intervalo de 190-300 nm.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Doesn\\&#8217;t find what you want? Don\\&#8217;t worry. There are always alternate ways to solve your problems. Maybe one of our portfolios can help.PIR Motion SensorsMotion Sensor SwitchesOccupancy Sensors&lt;div<\/p>","protected":false},"author":4,"featured_media":12859,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"optical system\", \"idxall\": 0, \"keywordtitlesimi\": 0.9077358245849609, \"keywordslugsimi\": 0.9077358245849609, \"paratitlesimi\": 0.6742519736289978, \"paraslugsimi\": 0.6742519736289978, \"slug\": \"what-is-optical-system\", \"title\": \"What is Optical System\", \"id\": 13958}, {\"keyword\": \"interference\", \"idxall\": 0, \"keywordtitlesimi\": 0.8127361536026001, \"keywordslugsimi\": 0.8127361536026001, \"paratitlesimi\": 0.5903350114822388, \"paraslugsimi\": 0.5903350114822388, \"slug\": \"what-is-electromagnetic-interference\", \"title\": \"What is Electromagnetic Interference\", \"id\": 14224}, {\"keyword\": \"reflections\", \"idxall\": 1, \"keywordtitlesimi\": 0.8031681776046753, \"keywordslugsimi\": 0.8031681776046753, \"paratitlesimi\": 0.6135983467102051, \"paraslugsimi\": 0.6135983467102051, \"slug\": \"what-is-reflection\", \"title\": \"What is Reflection\", \"id\": 14119}]","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Stray light","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[102],"tags":[99],"class_list":["post-13956","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Stray Light - Rayzeek<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Stray Light - Rayzeek\" \/>\n<meta property=\"og:description\" content=\"Doesn&#039;t find what you want? Don&#039;t worry. There are always alternate ways to solve your problems. 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