{"id":3075,"date":"2015-09-08T07:30:40","date_gmt":"2015-09-08T07:30:40","guid":{"rendered":"http:\/\/codienlanh.com\/?p=3075"},"modified":"2015-09-08T07:30:40","modified_gmt":"2015-09-08T07:30:40","slug":"nha-thau-co-dien-chia-se-nhung-khai-niem-co-ban-trong-chieu-sang","status":"publish","type":"post","link":"https:\/\/codienlanh.com\/en\/nha-thau-co-dien-chia-se-nhung-khai-niem-co-ban-trong-chieu-sang\/","title":{"rendered":"Nh\u00e0 th\u1ea7u c\u01a1 \u0111i\u1ec7n chia s\u1ebb nh\u1eefng kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n trong chi\u1ebfu s\u00e1ng"},"content":{"rendered":"<p>\u0110\u1ec3 thu\u1eadn ti\u1ec7n cho vi\u1ec7c t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 k\u1ef9 thu\u1eadt chi\u1ebfu s\u00e1ng, b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c <strong><a href=\"http:\/\/codienlanh.com\/\">nh\u00e0 th\u1ea7u c\u01a1 \u0111i\u1ec7n<\/a><\/strong> li\u1ec7t k\u00ea m\u1ed9t v\u00e0i kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n hay d\u00f9ng trong chi\u1ebfu s\u00e1ng nh\u01b0 quang th\u00f4ng, \u0111\u1ed9 r\u1ecdi, h\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1\u2026<\/p>\n<ul>\n<li>Quang th\u00f4ng (\u03a6)<\/li>\n<\/ul>\n<p>\u0110\u1ea1i l\u01b0\u1ee3ng th\u00f4ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng d\u00f9ng trong k\u1ef9 thu\u1eadt chi\u1ebfu s\u00e1ng \u0111\u01b0\u1ee3c \u0111o trong \u0111\u01a1n v\u1ecb lumens (lm). M\u1ed9t lumen c\u1ee7a \u00e1nh s\u00e1ng, kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o b\u01b0\u1edbc s\u00f3ng c\u1ee7a n\u00f3 (m\u00e0u), t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u1ed9 s\u00e1ng m\u00e0 m\u1eaft ng\u01b0\u1eddi c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c. M\u1eaft ng\u01b0\u1eddi c\u1ea3m nh\u1eadn kh\u00e1c nhau \u0111\u1ed1i v\u1edbi c\u00e1c \u00e1nh s\u00e1ng c\u00f3 b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau, c\u1ea3m nh\u1eadn m\u1ea1nh nh\u1ea5t \u0111\u1ed1i v\u1edbi b\u01b0\u1edbc s\u00f3ng 555 nm.<\/p>\n<ul>\n<li>C\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng (I)<\/li>\n<\/ul>\n<p>C\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng I, \u0111o trong \u0111\u01a1n v\u1ecb candela (cd). \u0110\u00f3 l\u00e0 th\u00f4ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t ngu\u1ed3n s\u00e1ng ph\u00e1t ra trong m\u1ed9t \u0111\u01a1n v\u1ecb g\u00f3c kh\u00f4ng gian (steradian).<\/p>\n<p>Theo <strong>nh\u00e0 th\u1ea7u c\u01a1 \u0111i\u1ec7n<\/strong>, Candela l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb c\u01a1 b\u1ea3n d\u00f9ng trong vi\u1ec7c \u0111o th\u00f4ng s\u1ed1 ngu\u1ed3n s\u00e1ng v\u00e0 \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 sau: 1 candela l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 m\u00e0 m\u1ed9t ngu\u1ed3n s\u00e1ng ph\u00e1t ra 1 lumen \u0111\u1eb3ng h\u01b0\u1edbng trong m\u1ed9t g\u00f3c \u0111\u1eb7c. M\u1ed9t ngu\u1ed3n s\u00e1ng 1 candela s\u1ebd ph\u00e1t ra 1 lumen tr\u00ean m\u1ed9t di\u1ec7n t\u00edch 1 m\u00e9t vu\u00f4ng t\u1ea1i m\u1ed9t kho\u1ea3ng c\u00e1ch m\u1ed9t m\u00e9t k\u1ec3 t\u1eeb t\u00e2m ngu\u1ed3n s\u00e1ng. C\u00f3 th\u1ec3 th\u1ea5y c\u01b0\u1eddng \u0111\u1ed9 ngu\u1ed3n s\u00e1ng gi\u1ea3m theo kho\u1ea3ng c\u00e1ch k\u1ec3 t\u1eeb ngu\u1ed3n s\u00e1ng. 1cd = 1lm\/ 1steradian.<\/p>\n<ul>\n<li>\u0110\u1ed9 r\u1ecdi (E)<\/li>\n<\/ul>\n<p>\u0110\u1ed9 r\u1ecdi E (\u0111\u01a1n v\u1ecb lux) l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho th\u00f4ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch. M\u1ed9t di\u1ec7n t\u00edch m\u1eb7t c\u1ea7u 1m2 c\u00f3 m\u1ed9t ngu\u1ed3n s\u00e1ng c\u01b0\u1eddng \u0111\u1ed9 1 candela s\u1ebd c\u00f3 \u0111\u1ed9 r\u1ecdi l\u00e0 1 lux. 1lux = 1lm\/ 1m2.<\/p>\n<p><a href=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3076\" src=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-2.jpg\" alt=\"Nh\u00e0 th\u1ea7u c\u01a1 \u0111i\u1ec7n chia s\u1ebb nh\u1eefng kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n trong chi\u1ebfu s\u00e1ng\" width=\"680\" height=\"300\" srcset=\"https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-2.jpg 680w, https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-2-300x132.jpg 300w, https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-2-624x275.jpg 624w, https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-2-600x265.jpg 600w\" sizes=\"auto, (max-width: 680px) 100vw, 680px\" \/><\/a><\/p>\n<ul>\n<li>\u0110\u1ed9 ch\u00f3i (L)<\/li>\n<\/ul>\n<p>\u0110\u1ed9 ch\u00f3i L l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a m\u1ed9t ngu\u1ed3n s\u00e1ng ph\u00e1t \u00e1nh s\u00e1ng khu\u1ebfch t\u00e1n m\u1edf r\u1ed9ng ho\u1eb7c c\u1ee7a m\u1ed9t v\u1eadt ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng. \u0110\u1ed9 ch\u00f3i l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho m\u1eadt \u0111\u1ed9 ph\u00e2n b\u1ed1 c\u01b0\u1eddng \u0111\u1ed9 s\u00e1ng I tr\u00ean m\u1ed9t b\u1ec1 m\u1eb7t di\u1ec7n t\u00edch S theo m\u1ed9t ph\u01b0\u01a1ng cho tr\u01b0\u1edbc. 1nit = 1cd\/ 1m2<\/p>\n<ul>\n<li>H\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1 (\u03c1)<\/li>\n<\/ul>\n<p>H\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1 c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111o b\u1eb1ng t\u1ef7 s\u1ed1 gi\u1eefa quang th\u00f4ng ph\u1ea3n x\u1ea1(\u03a6r) c\u1ee7a v\u1eadt th\u1ec3 so v\u1edbi quang th\u00f4ng t\u1edbi c\u1ee7a n\u00f3 (\u03a6).<\/p>\n<p style=\"text-align: center;\">\u03c1=\u03a6r\/\u03a6<\/p>\n<ul>\n<li>H\u1ec7 s\u1ed1 h\u1ea5p th\u1ee5 (\u03b1)<\/li>\n<\/ul>\n<p>H\u1ec7 s\u1ed1 h\u1ea5p th\u1ee5 c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111o b\u1eb1ng t\u1ef7 s\u1ed1 gi\u1eefa quang th\u00f4ng \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 (\u03a6a) c\u1ee7a v\u1eadt th\u1ec3 so v\u1edbi quang th\u00f4ng t\u1edbi c\u1ee7a n\u00f3 (\u03a6).<\/p>\n<p style=\"text-align: center;\">\u03b1= \u03a6a\/ \u03a6<\/p>\n<ul>\n<li>Ph\u00e2n b\u1ed1 ph\u1ed5<\/li>\n<\/ul>\n<p>Ph\u00e2n b\u1ed1 ph\u1ed5 tr\u00ecnh di\u1ec5n ph\u1ed5 c\u1ee7a b\u1ee9c x\u1ea1 v\u00f9ng nh\u00ecn th\u1ea5y n\u00eau l\u00ean m\u1ed1i t\u01b0\u01a1ng quan gi\u1eefa c\u00f4ng su\u1ea5t b\u1ee9c x\u1ea1 ph\u1ee5 thu\u1ed9c v\u00e0o b\u01b0\u1edbc s\u00f3ng.<\/p>\n<ul>\n<li>Nhi\u1ec7t \u0111\u1ed9 m\u00e0u<\/li>\n<\/ul>\n<p>Nhi\u1ec7t \u0111\u1ed9 m\u00e0u (\u0111o b\u1eb1ng \u0111\u01a1n v\u1ecb Kenvin) l\u00e0 m\u00e0u c\u1ee7a \u00e1nh s\u00e1ng m\u00e0 ngu\u1ed3n s\u00e1ng ph\u00e1t ra. Nhi\u1ec7t \u0111\u1ed9 m\u00e0u \u0111\u01b0\u1ee3c <strong>nh\u00e0 th\u1ea7u c\u01a1 \u0111i\u1ec7n <\/strong>\u0111\u1ecbnh ngh\u0129a l\u00e0 nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i c\u1ee7a m\u1ed9t v\u1eadt b\u1ee9c x\u1ea1 \u0111en c\u00f3 ph\u1ed5 b\u1ee9c x\u1ea1 gi\u1ed1ng ph\u1ed5 b\u1ee9c x\u1ea1 c\u1ee7a ngu\u1ed3n s\u00e1ng.<\/p>\n<p><a href=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3078\" src=\"http:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-1.jpg\" alt=\"Nh\u00e0 th\u1ea7u c\u01a1 \u0111i\u1ec7n chia s\u1ebb nh\u1eefng kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n trong chi\u1ebfu s\u00e1ng\" width=\"600\" height=\"345\" srcset=\"https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-1.jpg 600w, https:\/\/codienlanh.com\/wp-content\/uploads\/2015\/09\/nha-thau-co-dien-1-300x173.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<ul>\n<li>\u0110\u1ed9 ho\u00e0n m\u00e0u<\/li>\n<\/ul>\n<p>\u0110\u1ed9 ho\u00e0n m\u00e0u \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng ch\u1ec9 s\u1ed1 ho\u00e0n m\u00e0u (CRI) c\u00f3 \u0111\u1ed9 l\u1edbn t\u1eeb 0 \u0111\u1ebfn 100, di\u1ec5n t\u1ea3 \u0111\u1ed9 ho\u00e0n m\u00e0u c\u1ee7a c\u00e1c v\u1eadt \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng trong m\u1eaft ng\u01b0\u1eddi so v\u1edbi m\u00e0u th\u1ef1c c\u1ee7a n\u00f3. CRI c\u00e0ng cao th\u00ec kh\u1ea3 n\u0103ng ho\u00e0n m\u00e0u c\u00e0ng l\u1edbn.<\/p>\n<ul>\n<li>Hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u00e8n<\/li>\n<\/ul>\n<p>Hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u00e8n l\u00e0 \u0111\u1ea1i l\u01b0\u1ee3ng \u0111o hi\u1ec7u su\u1ea5t c\u1ee7a ngu\u1ed3n s\u00e1ng trong \u0111\u01a1n v\u1ecb lumen tr\u00ean O\u00e1t (LPW), l\u00e0 tham s\u1ed1 x\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng \u00e1nh s\u00e1ng ph\u00e1t ra khi ti\u00eau th\u1ee5 m\u1ed9t O\u00e1t n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n.<\/p>\n<p>Th\u1eddi gian s\u1ed1ng trung b\u00ecnh<\/p>\n<p>Th\u1eddi gian s\u1ed1ng trung b\u00ecnh l\u00e0 th\u1eddi gian m\u00e0 50% s\u1ed1 l\u01b0\u1ee3ng \u0111\u00e8n s\u1eed d\u1ee5ng b\u1ecb ch\u00e1y (th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong ph\u00f2ng th\u00ed nghi\u1ec7m).<\/p>\n<p>Xem th\u00eam: <a href=\"http:\/\/codienlanh.com\/cong-ty-co-dien-huong-dan-lap-dat-dau-bao-khoi-beam-gst-i-9105r-c-9105r\/\">C\u00f4ng ty c\u01a1 \u0111i\u1ec7n h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t \u0111\u1ea7u b\u00e1o kh\u00f3i BEAM GST I-9105R C-9105R<\/a><\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <a href=\"http:\/\/codienlanh.com\/cong-ty-dien-lanh-khai-niem-chung-ve-he-thong-cap-nuoc-tu-chay\/\">C\u00f4ng ty \u0111i\u1ec7n l\u1ea1nh kh\u00e1i ni\u1ec7m chung v\u1ec1 h\u1ec7 th\u1ed1ng c\u1ea5p n\u01b0\u1edbc t\u1ef1 ch\u1ea3y<\/a><\/p>\n<p>\u00a0<\/p>\n<p>H\u00e3y li\u00ean h\u1ec7 v\u1edbi YOCO M&amp;E qua th\u00f4ng tin:<\/p>\n<h4><strong>C\u00d4NG TY C\u01a0 \u0110I\u1ec6N L\u1ea0NH TU\u1ed4I TR\u1eba (YOCO M&amp;E)<\/strong><\/h4>\n<p>Website: <a href=\"http:\/\/www.codienlanh.com\">www.codienlanh.com<\/a><\/p>\n<p>E-Mail: info@yoco.vn<\/p>\n<p>\u0110i\u1ec7n tho\u1ea1i: 08 6295 8806 \u2013 (Hotline: 0909 169 059 \u2013 Mr.Trung)<\/p>\n<p>\u0110\u1ecba ch\u1ec9: 151 \u0110\u00e0o Duy Anh, P.9, Q. Ph\u00fa Nhu\u1eadn, Tp. H\u1ed3 Ch\u00ed Minh<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0110\u1ec3 thu\u1eadn ti\u1ec7n cho vi\u1ec7c t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 k\u1ef9 thu\u1eadt chi\u1ebfu s\u00e1ng, b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c nh\u00e0 th\u1ea7u c\u01a1 \u0111i\u1ec7n li\u1ec7t k\u00ea m\u1ed9t v\u00e0i kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n hay d\u00f9ng trong chi\u1ebfu s\u00e1ng nh\u01b0 quang th\u00f4ng, \u0111\u1ed9 r\u1ecdi, h\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1\u2026 Quang th\u00f4ng (\u03a6) \u0110\u1ea1i l\u01b0\u1ee3ng th\u00f4ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng d\u00f9ng<\/p>\n","protected":false},"author":1,"featured_media":3079,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,20],"tags":[207],"class_list":["post-3075","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-ky-thuat","tag-nha-thau-co-dien"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - 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