{"id":496032,"date":"2025-10-09T18:24:46","date_gmt":"2025-10-09T11:24:46","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=496032"},"modified":"2025-10-09T18:24:46","modified_gmt":"2025-10-09T11:24:46","slug":"hong-ngoai","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/hong-ngoai\/","title":{"rendered":"Tia h\u1ed3ng ngo\u1ea1i l\u00e0 g\u00ec? C\u00f3 tr\u00ean nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o? C\u00f3 h\u1ea1i kh\u00f4ng?"},"content":{"rendered":"<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tia <strong>h\u1ed3ng ngo\u1ea1i<\/strong> hay tia IR l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong th\u1ebf gi\u1edbi c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i, t\u1eeb \u0111i\u1ec1u khi\u1ec3n tivi, c\u1ea3m bi\u1ebfn c\u1eeda t\u1ef1 \u0111\u1ed9ng cho \u0111\u1ebfn camera gi\u00e1m s\u00e1t ban \u0111\u00eam. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5 v\u1ec1 b\u1ea3n ch\u1ea5t, c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u0169ng nh\u01b0 nh\u1eefng \u1ea3nh h\u01b0\u1edfng c\u1ee7a lo\u1ea1i tia n\u00e0y \u0111\u1ebfn s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd gi\u00fap b\u1ea1n t\u00ecm hi\u1ec3u chi ti\u1ebft <\/span><b>tia h\u1ed3ng ngo\u1ea1i l\u00e0 g\u00ec, \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong \u0111\u1eddi s\u1ed1ng<\/b><span style=\"font-weight: 400;\">, c\u0169ng nh\u01b0 <\/span><b>c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb c\u00f3 tia IR m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><b>Tia h\u1ed3ng ngo\u1ea1i l\u00e0 g\u00ec, c\u00f3 nh\u1eefng lo\u1ea1i n\u00e0o?<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tia h\u1ed3ng ngo\u1ea1i (Infrared Radiation \u2013 IR) l\u00e0 m\u1ed9t d\u1ea1ng <\/span><b>b\u1ee9c x\u1ea1 \u0111i\u1ec7n t\u1eeb<\/b><span style=\"font-weight: 400;\"> c\u00f3 b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n \u00e1nh s\u00e1ng kh\u1ea3 ki\u1ebfn nh\u01b0ng ng\u1eafn h\u01a1n s\u00f3ng v\u00f4 tuy\u1ebfn, n\u1eb1m trong kho\u1ea3ng <\/span><b>700 nm \u2013 1 mm<\/b><span style=\"font-weight: 400;\">. Tia IR \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n v\u00e0o \u0111\u1ea7u th\u1ebf k\u1ef7 XIX b\u1edfi nh\u00e0 thi\u00ean v\u0103n h\u1ecdc <\/span><b>William Herschel<\/b><span style=\"font-weight: 400;\">, khi \u00f4ng nh\u1eadn th\u1ea5y m\u1ed9t lo\u1ea1i n\u0103ng l\u01b0\u1ee3ng v\u00f4 h\u00ecnh c\u00f3 th\u1ec3 l\u00e0m n\u00f3ng nhi\u1ec7t k\u1ebf d\u00f9 n\u1eb1m ngo\u00e0i v\u00f9ng \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">V\u1ec1 b\u1ea3n ch\u1ea5t, tia IR ch\u00ednh l\u00e0 <\/span><b>nhi\u1ec7t b\u1ee9c x\u1ea1<\/b><span style=\"font-weight: 400;\">, \u0111\u01b0\u1ee3c ph\u00e1t ra t\u1eeb m\u1ecdi v\u1eadt th\u1ec3 c\u00f3 nhi\u1ec7t \u0111\u1ed9 l\u1edbn h\u01a1n 0 tuy\u1ec7t \u0111\u1ed1i (\u2013273,15\u00b0C). Do \u0111\u00f3, m\u1eaft th\u01b0\u1eddng kh\u00f4ng nh\u00ecn th\u1ea5y nh\u01b0ng c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c d\u01b0\u1edbi d\u1ea1ng <\/span><b>nhi\u1ec7t<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tia IR \u0111\u01b0\u1ee3c chia th\u00e0nh <\/span><b>ba lo\u1ea1i ch\u00ednh<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>Tia IR g\u1ea7n (Near-Infrared, NIR):<\/b><span style=\"font-weight: 400;\"> b\u01b0\u1edbc s\u00f3ng t\u1eeb 0,7 \u2013 1,4 \u00b5m. D\u00f9ng ph\u1ed5 bi\u1ebfn trong \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa, camera gi\u00e1m s\u00e1t.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Tia IR trung (Mid-Infrared, MIR):<\/b><span style=\"font-weight: 400;\"> b\u01b0\u1edbc s\u00f3ng t\u1eeb 1,4 \u2013 3 \u00b5m. \u1ee8ng d\u1ee5ng trong c\u00f4ng nghi\u1ec7p, ph\u00e2n t\u00edch v\u1eadt li\u1ec7u, \u0111o nhi\u1ec7t \u0111\u1ed9.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Tia IR xa (Far-Infrared, FIR):<\/b><span style=\"font-weight: 400;\"> b\u01b0\u1edbc s\u00f3ng t\u1eeb 3 \u00b5m \u2013 1 mm. Ch\u1ee7 y\u1ebfu d\u00f9ng trong thi\u1ebft b\u1ecb s\u01b0\u1edfi \u1ea5m, y h\u1ecdc tr\u1ecb li\u1ec7u v\u00e0 nghi\u00ean c\u1ee9u khoa h\u1ecdc.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-01.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-01-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-01-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-496033 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-01.jpg\" alt=\"hong-ngoai-01\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-01.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-01-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-01-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 style=\"text-align: justify;\"><b>Tia h\u1ed3ng ngo\u1ea1i c\u00f3 m\u00e0u g\u00ec?<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tia h\u1ed3ng ngo\u1ea1i <\/span><b>kh\u00f4ng c\u00f3 m\u00e0u<\/b><span style=\"font-weight: 400;\">, v\u00ec n\u00f3 n\u1eb1m ngo\u00e0i v\u00f9ng \u00e1nh s\u00e1ng m\u00e0 m\u1eaft ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y (kho\u1ea3ng 380 \u2013 700 nm). V\u1edbi b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n \u00e1nh s\u00e1ng \u0111\u1ecf (t\u1eeb 700 nm \u0111\u1ebfn 1 mm) n\u00ean tia n\u00e0y kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c nh\u1eadn bi\u1ebft b\u1eb1ng m\u1eaft th\u01b0\u1eddng.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tuy nhi\u00ean, trong h\u00ecnh \u1ea3nh t\u1eeb c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 <\/span><b>camera h\u1ed3ng ngo\u1ea1i<\/b><span style=\"font-weight: 400;\"> hay <\/span><b>m\u00e1y \u0111o nhi\u1ec7t<\/b><span style=\"font-weight: 400;\">, tia IR th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng <\/span><b>m\u00e0u \u0111\u1ecf, cam, t\u00edm<\/b><span style=\"font-weight: 400;\">&#8230; Nh\u1eefng m\u00e0u n\u00e0y kh\u00f4ng ph\u1ea3n \u00e1nh m\u00e0u th\u1eadt, m\u00e0 ch\u1ec9 l\u00e0 <\/span><b>m\u00e0u gi\u1ea3 l\u1eadp (false color)<\/b><span style=\"font-weight: 400;\"> do ph\u1ea7n m\u1ec1m g\u00e1n v\u00e0o \u0111\u1ec3 bi\u1ec3u th\u1ecb s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Trong m\u00f4i tr\u01b0\u1eddng t\u1ef1 nhi\u00ean, c\u00e1c v\u1eadt th\u1ec3 \u0111\u1ec1u ph\u00e1t ra tia IR t\u00f9y theo nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u00fang:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>V\u1eadt th\u1ec3 c\u00e0ng n\u00f3ng<\/b><span style=\"font-weight: 400;\"> ph\u00e1t ra tia IR <\/span><b>m\u1ea1nh h\u01a1n<\/b><span style=\"font-weight: 400;\"> v\u00e0 c\u00f3 b\u01b0\u1edbc s\u00f3ng <\/span><b>ng\u1eafn h\u01a1n<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>V\u1eadt th\u1ec3 c\u00e0ng l\u1ea1nh<\/b><span style=\"font-weight: 400;\"> ph\u00e1t ra tia IR <\/span><b>y\u1ebfu h\u01a1n<\/b><span style=\"font-weight: 400;\"> v\u00e0 c\u00f3 b\u01b0\u1edbc s\u00f3ng <\/span><b>d\u00e0i h\u01a1n<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Camera h\u1ed3ng ngo\u1ea1i s\u1ebd thu nh\u1eadn b\u1ee9c x\u1ea1 n\u00e0y v\u00e0 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh h\u00ecnh \u1ea3nh d\u1ec5 quan s\u00e1t, gi\u00fap ph\u00e2n bi\u1ec7t c\u00e1c v\u00f9ng n\u00f3ng \u2013 l\u1ea1nh b\u1eb1ng m\u00e0u s\u1eafc t\u01b0\u01a1ng \u1ee9ng. Do \u0111\u00f3, h\u00ecnh \u1ea3nh \u201ch\u1ed3ng ngo\u1ea1i\u201d m\u00e0 b\u1ea1n th\u1ea5y th\u1ef1c ch\u1ea5t ch\u1ec9 l\u00e0 <\/span><b>m\u1ed9t c\u00e1ch bi\u1ec3u di\u1ec5n n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t<\/b><span style=\"font-weight: 400;\">, ch\u1ee9 <\/span><b>kh\u00f4ng ph\u1ea3i m\u00e0u s\u1eafc th\u1eadt c\u1ee7a tia IR<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-02.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-02-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-02-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-496034 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-02.jpg\" alt=\"hong-ngoai-02\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-02.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-02-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-02-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 style=\"text-align: justify;\"><b>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a tia h\u1ed3ng ngo\u1ea1i<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a tia IR d\u1ef1a tr\u00ean <\/span><b>hi\u1ec7n t\u01b0\u1ee3ng b\u1ee9c x\u1ea1 nhi\u1ec7t<\/b><span style=\"font-weight: 400;\">. M\u1ecdi v\u1eadt th\u1ec3 \u0111\u1ec1u c\u00f3 c\u00e1c nguy\u00ean t\u1eed dao \u0111\u1ed9ng. Khi n\u0103ng l\u01b0\u1ee3ng dao \u0111\u1ed9ng n\u00e0y t\u0103ng l\u00ean, v\u1eadt th\u1ec3 ph\u00e1t ra n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb \u2013 trong \u0111\u00f3 c\u00f3 <\/span><b>tia h\u1ed3ng ngo\u1ea1i<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Thi\u1ebft b\u1ecb ph\u00e1t v\u00e0 thu h\u1ed3ng ngo\u1ea1i th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng theo c\u01a1 ch\u1ebf:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>B\u1ed9 ph\u00e1t (Emitter):<\/b><span style=\"font-weight: 400;\"> ph\u00e1t ra ch\u00f9m tia IR d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ed9 thu (Receiver):<\/b><span style=\"font-weight: 400;\"> ti\u1ebfp nh\u1eadn tia ph\u1ea3n x\u1ea1 ho\u1eb7c t\u00edn hi\u1ec7u h\u1ed3ng ngo\u1ea1i.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>B\u1ed9 x\u1eed l\u00fd t\u00edn hi\u1ec7u:<\/b><span style=\"font-weight: 400;\"> ph\u00e2n t\u00edch s\u1ef1 thay \u0111\u1ed5i c\u1ee7a ch\u00f9m tia (v\u1ec1 c\u01b0\u1eddng \u0111\u1ed9, t\u1ea7n s\u1ed1, h\u01b0\u1edbng truy\u1ec1n&#8230;) \u0111\u1ec3 \u0111\u01b0a ra k\u1ebft qu\u1ea3 ho\u1eb7c h\u00e0nh \u0111\u1ed9ng c\u1ee5 th\u1ec3.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-03.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-03-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-03-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-496035 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-03.jpg\" alt=\"hong-ngoai-03\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-03.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-03-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-03-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">V\u00ed d\u1ee5:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110i\u1ec1u khi\u1ec3n TV:<\/b><span style=\"font-weight: 400;\"> Khi b\u1ea1n nh\u1ea5n n\u00fat, \u0111\u00e8n LED h\u1ed3ng ngo\u1ea1i \u1edf \u0111\u1ea7u \u0111i\u1ec1u khi\u1ec3n ph\u00e1t ra t\u00edn hi\u1ec7u m\u00e3 h\u00f3a \u0111\u1ebfn m\u1eaft nh\u1eadn c\u1ee7a tivi.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>C\u1ea3m bi\u1ebfn chuy\u1ec3n \u0111\u1ed9ng:<\/b><span style=\"font-weight: 400;\"> Khi c\u00f3 ng\u01b0\u1eddi \u0111i qua, tia IR b\u1ecb gi\u00e1n \u0111o\u1ea1n, c\u1ea3m bi\u1ebfn nh\u1eadn bi\u1ebft s\u1ef1 thay \u0111\u1ed5i v\u00e0 k\u00edch ho\u1ea1t h\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng ho\u1eb7c \u0111\u00e8n t\u1ef1 s\u00e1ng.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Camera nhi\u1ec7t:<\/b><span style=\"font-weight: 400;\"> Thu nh\u1eadn tia IR ph\u00e1t ra t\u1eeb c\u01a1 th\u1ec3 ho\u1eb7c v\u1eadt th\u1ec3, sau \u0111\u00f3 chuy\u1ec3n \u0111\u1ed5i th\u00e0nh h\u00ecnh \u1ea3nh th\u1ec3 hi\u1ec7n m\u1ee9c nhi\u1ec7t kh\u00e1c nhau.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Nh\u1edd ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t, tia h\u1ed3ng ngo\u1ea1i <\/span><b>v\u1eabn c\u00f3 th\u1ec3 truy\u1ec1n v\u00e0 ph\u1ea3n x\u1ea1 trong m\u00f4i tr\u01b0\u1eddng t\u1ed1i<\/b><span style=\"font-weight: 400;\">, gi\u00fap c\u00e1c thi\u1ebft b\u1ecb quan s\u00e1t ho\u1eb7c \u0111\u1ecbnh v\u1ecb hi\u1ec7u qu\u1ea3 ngay c\u1ea3 khi kh\u00f4ng c\u00f3 \u00e1nh s\u00e1ng.<\/span><\/p>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-04.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-04-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-04-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-496036 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-04.jpg\" alt=\"hong-ngoai-04\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-04.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-04-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-04-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 style=\"text-align: justify;\"><b>\u1ee8ng d\u1ee5ng c\u1ee7a tia h\u1ed3ng ngo\u1ea1i trong th\u1ef1c ti\u1ec5n<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tia IR kh\u00f4ng ch\u1ec9 hi\u1ec7n di\u1ec7n trong c\u00e1c th\u00ed nghi\u1ec7m khoa h\u1ecdc m\u00e0 c\u00f2n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c c\u1ee7a \u0111\u1eddi s\u1ed1ng, t\u1eeb thi\u1ebft b\u1ecb gia d\u1ee5ng, y h\u1ecdc cho \u0111\u1ebfn c\u00f4ng nghi\u1ec7p v\u00e0 nghi\u00ean c\u1ee9u hi\u1ec7n \u0111\u1ea1i.<\/span><\/p>\n<h3 style=\"text-align: justify;\"><b>\u1ee8ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed gia d\u1ee5ng<\/b><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tia IR xu\u1ea5t hi\u1ec7n r\u1ea5t nhi\u1ec1u trong c\u00e1c thi\u1ebft b\u1ecb m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u1eb1ng ng\u00e0y:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110i\u1ec1u khi\u1ec3n t\u1eeb xa:<\/b><span style=\"font-weight: 400;\"> G\u1ea7n nh\u01b0 m\u1ecdi thi\u1ebft b\u1ecb nh\u01b0 tivi, m\u00e1y l\u1ea1nh, qu\u1ea1t, \u0111\u1ea7u DVD&#8230; \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng nh\u1edd t\u00edn hi\u1ec7u h\u1ed3ng ngo\u1ea1i.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>C\u1ea3m bi\u1ebfn c\u1eeda t\u1ef1 \u0111\u1ed9ng:<\/b><span style=\"font-weight: 400;\"> Ph\u00e1t hi\u1ec7n chuy\u1ec3n \u0111\u1ed9ng khi c\u00f3 ng\u01b0\u1eddi \u0111i qua, k\u00edch ho\u1ea1t c\u01a1 ch\u1ebf \u0111\u00f3ng m\u1edf.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Camera an ninh ban \u0111\u00eam:<\/b><span style=\"font-weight: 400;\"> S\u1eed d\u1ee5ng \u0111\u00e8n LED h\u1ed3ng ngo\u1ea1i \u0111\u1ec3 ghi h\u00ecnh trong \u0111i\u1ec1u ki\u1ec7n thi\u1ebfu s\u00e1ng.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>M\u00e1y s\u1ea5y t\u00f3c, m\u00e1y s\u01b0\u1edfi:<\/b><span style=\"font-weight: 400;\"> T\u1eadn d\u1ee5ng tia IR xa \u0111\u1ec3 t\u1ecfa nhi\u1ec7t nhanh, \u0111\u1ec1u m\u00e0 kh\u00f4ng g\u00e2y kh\u00f4 da.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>M\u00e1y \u0111o th\u00e2n nhi\u1ec7t:<\/b><span style=\"font-weight: 400;\"> \u0110o nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3 m\u00e0 kh\u00f4ng c\u1ea7n ti\u1ebfp x\u00fac.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Nh\u1edd \u0111\u1eb7c t\u00ednh <\/span><b>an to\u00e0n, kh\u00f4ng ph\u00e1t s\u00e1ng v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng<\/b><span style=\"font-weight: 400;\">, tia IR l\u00e0 gi\u1ea3i ph\u00e1p l\u00fd t\u01b0\u1edfng cho c\u00e1c thi\u1ebft b\u1ecb ti\u1ec7n \u00edch trong gia \u0111\u00ecnh.<\/span><\/p>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-05.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-05-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-05-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-496043 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-05.jpg\" alt=\"hong-ngoai-05\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-05.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-05-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-05-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 style=\"text-align: justify;\"><b>\u1ee8ng d\u1ee5ng trong y h\u1ecdc v\u00e0 ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe<\/b><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Trong l\u0129nh v\u1ef1c y h\u1ecdc, <\/span><b>tia h\u1ed3ng ngo\u1ea1i<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng tr\u1ecb li\u1ec7u t\u1ef1 nhi\u00ean, gi\u00fap c\u1ea3i thi\u1ec7n tu\u1ea7n ho\u00e0n m\u00e1u, gi\u1ea3m \u0111au v\u00e0 h\u1ed7 tr\u1ee3 ph\u1ee5c h\u1ed3i c\u01a1 th\u1ec3. Nh\u1edd kh\u1ea3 n\u0103ng <\/span><b>x\u00e2m nh\u1eadp s\u00e2u v\u00e0o c\u00e1c m\u00f4 d\u01b0\u1edbi da<\/b><span style=\"font-weight: 400;\">, tia IR k\u00edch th\u00edch t\u1ebf b\u00e0o ho\u1ea1t \u0111\u1ed9ng, th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5t v\u00e0 t\u00e1i t\u1ea1o m\u00f4 t\u1ed5n th\u01b0\u01a1ng.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn g\u1ed3m:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110\u00e8n tr\u1ecb li\u1ec7u:<\/b><span style=\"font-weight: 400;\"> S\u1eed d\u1ee5ng trong v\u1eadt l\u00fd tr\u1ecb li\u1ec7u \u0111\u1ec3 gi\u1ea3m \u0111au c\u01a1, \u0111au kh\u1edbp, vi\u00eam d\u00e2y th\u1ea7n kinh ho\u1eb7c co c\u1ee9ng c\u01a1.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Ph\u00f2ng x\u00f4ng h\u1ed3ng ngo\u1ea1i:<\/b><span style=\"font-weight: 400;\"> D\u00f9ng tia IRxa (FIR) \u0111\u1ec3 t\u1ea1o nhi\u1ec7t s\u00e2u, gi\u00fap gi\u00e3n m\u1ea1ch, t\u0103ng ti\u1ebft m\u1ed3 h\u00f4i v\u00e0 h\u1ed7 tr\u1ee3 th\u1ea3i \u0111\u1ed9c.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Thi\u1ebft b\u1ecb \u0111o nh\u1ecbp tim, \u0111o SpO\u2082:<\/b><span style=\"font-weight: 400;\"> \u1ee8ng d\u1ee5ng nguy\u00ean l\u00fd h\u1ea5p th\u1ee5 tia IR \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh n\u1ed3ng \u0111\u1ed9 oxy trong m\u00e1u m\u00e0 kh\u00f4ng c\u1ea7n x\u00e2m l\u1ea5n.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tuy nhi\u00ean, khi s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb tr\u1ecb li\u1ec7u h\u1ed3ng ngo\u1ea1i, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n <\/span><b>tu\u00e2n th\u1ee7 th\u1eddi gian v\u00e0 kho\u1ea3ng c\u00e1ch chi\u1ebfu h\u1ee3p l\u00fd<\/b><span style=\"font-weight: 400;\">, tr\u00e1nh chi\u1ebfu qu\u00e1 g\u1ea7n ho\u1eb7c qu\u00e1 l\u00e2u \u0111\u1ec3 kh\u00f4ng g\u00e2y b\u1ecfng nhi\u1ec7t ho\u1eb7c k\u00edch \u1ee9ng da. Khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch, tia IR c\u00f3 th\u1ec3 mang l\u1ea1i nhi\u1ec1u <\/span><b>l\u1ee3i \u00edch thi\u1ebft th\u1ef1c cho s\u1ee9c kh\u1ecfe v\u00e0 qu\u00e1 tr\u00ecnh ph\u1ee5c h\u1ed3i c\u01a1 th\u1ec3<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-06.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-06-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-06-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-496044 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-06.jpg\" alt=\"hong-ngoai-06\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-06.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-06-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-06-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3 style=\"text-align: justify;\"><b>\u1ee8ng d\u1ee5ng trong c\u00f4ng nghi\u1ec7p v\u00e0 khoa h\u1ecdc<\/b><\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt \u2013 c\u00f4ng nghi\u1ec7p, tia IR \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>\u0110o nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng ti\u1ebfp x\u00fac:<\/b><span style=\"font-weight: 400;\"> C\u00e1c c\u1ea3m bi\u1ebfn h\u1ed3ng ngo\u1ea1i \u0111\u01b0\u1ee3c d\u00f9ng trong nh\u00e0 m\u00e1y, d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t \u0111\u1ec3 gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 m\u00e1y m\u00f3c.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Ki\u1ec3m tra m\u1ed1i h\u00e0n, k\u1ebft c\u1ea5u:<\/b><span style=\"font-weight: 400;\"> Camera h\u1ed3ng ngo\u1ea1i ph\u00e1t hi\u1ec7n \u0111i\u1ec3m n\u00f3ng ho\u1eb7c ch\u1ed7 r\u00f2 nhi\u1ec7t trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n, \u0111\u01b0\u1eddng \u1ed1ng.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Ph\u00e2n t\u00edch v\u1eadt li\u1ec7u:<\/b><span style=\"font-weight: 400;\"> S\u1eed d\u1ee5ng ph\u1ed5 h\u1ed3ng ngo\u1ea1i (IR spectroscopy) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc trong m\u1eabu v\u1eadt.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng d\u00e2y t\u1ea7m ng\u1eafn:<\/b><span style=\"font-weight: 400;\"> M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb di \u0111\u1ed9ng \u0111\u1eddi c\u0169 d\u00f9ng IR \u0111\u1ec3 g\u1eedi \u2013 nh\u1eadn th\u00f4ng tin.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tia IR c\u0169ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong <\/span><b>qu\u00e2n s\u1ef1, thi\u00ean v\u0103n h\u1ecdc, nghi\u00ean c\u1ee9u kh\u00ed h\u1eadu<\/b><span style=\"font-weight: 400;\">, gi\u00fap quan s\u00e1t v\u1eadt th\u1ec3 xa x\u00f4i ho\u1eb7c \u1ea9n trong b\u00f3ng t\u1ed1i.<\/span><\/p>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-07.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-07-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-07-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-496045 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-07.jpg\" alt=\"hong-ngoai-07\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-07.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-07-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-07-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 style=\"text-align: justify;\"><b>Tia h\u1ed3ng ngo\u1ea1i c\u00f3 h\u1ea1i cho s\u1ee9c kh\u1ecfe kh\u00f4ng?<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng, <\/span><b>tia IR kh\u00f4ng g\u00e2y h\u1ea1i cho s\u1ee9c kh\u1ecfe<\/b><span style=\"font-weight: 400;\">. \u0110\u00e2y l\u00e0 b\u1ee9c x\u1ea1 nhi\u1ec7t t\u1ef1 nhi\u00ean c\u00f3 m\u1eb7t kh\u1eafp n\u01a1i nh\u01b0 \u00e1nh n\u1eafng, c\u01a1 th\u1ec3 ng\u01b0\u1eddi, b\u1ebfp l\u00f2\u2026 v\u1edbi n\u0103ng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n tia UV n\u00ean <\/span><b>kh\u00f4ng g\u00e2y t\u1ed5n th\u01b0\u01a1ng t\u1ebf b\u00e0o<\/b><span style=\"font-weight: 400;\">. Ng\u01b0\u1ee3c l\u1ea1i, tia IR c\u00f2n \u0111\u01b0\u1ee3c <\/span><b>\u1ee9ng d\u1ee5ng trong y h\u1ecdc v\u00e0 v\u1eadt l\u00fd tr\u1ecb li\u1ec7u<\/b><span style=\"font-weight: 400;\"> nh\u01b0 s\u01b0\u1edfi \u1ea5m, gi\u1ea3m \u0111au, k\u00edch th\u00edch tu\u1ea7n ho\u00e0n m\u00e1u.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tuy nhi\u00ean, <\/span><b>khi c\u01b0\u1eddng \u0111\u1ed9 cao ho\u1eb7c ti\u1ebfp x\u00fac k\u00e9o d\u00e0i<\/b><span style=\"font-weight: 400;\">, tia n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra m\u1ed9t s\u1ed1 \u1ea3nh h\u01b0\u1edfng kh\u00f4ng mong mu\u1ed1n:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>G\u00e2y kh\u00f4 da, b\u1ecfng nh\u1eb9:<\/b><span style=\"font-weight: 400;\"> N\u1ebfu ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi ngu\u1ed3n ph\u00e1t nhi\u1ec7t m\u1ea1nh (\u0111\u00e8n h\u1ed3ng ngo\u1ea1i tr\u1ecb li\u1ec7u, m\u00e1y s\u01b0\u1edfi).<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn m\u1eaft:<\/b><span style=\"font-weight: 400;\"> Tia IR c\u01b0\u1eddng \u0111\u1ed9 cao c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n th\u01b0\u01a1ng v\u00f5ng m\u1ea1c ho\u1eb7c gi\u00e1c m\u1ea1c n\u1ebfu nh\u00ecn l\u00e2u v\u00e0o ngu\u1ed3n ph\u00e1t.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>T\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3:<\/b><span style=\"font-weight: 400;\"> Trong m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 tia IR cao (nh\u01b0 luy\u1ec7n kim, \u0111\u00fac th\u1ee7y tinh), ng\u01b0\u1eddi lao \u0111\u1ed9ng c\u1ea7n trang b\u1ecb b\u1ea3o h\u1ed9 chuy\u00ean d\u1ee5ng.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Do \u0111\u00f3, <\/span><b>tia h\u1ed3ng ngo\u1ea1i kh\u00f4ng g\u00e2y h\u1ea1i n\u1ebfu s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch v\u00e0 trong gi\u1edbi h\u1ea1n an to\u00e0n<\/b><span style=\"font-weight: 400;\">. C\u00e1c thi\u1ebft b\u1ecb d\u00e2n d\u1ee5ng hi\u1ec7n nay \u0111\u1ec1u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf, \u0111\u1ea3m b\u1ea3o kh\u00f4ng v\u01b0\u1ee3t ng\u01b0\u1ee1ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ee9c kh\u1ecfe.<\/span><\/p>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-08.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-08-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-08-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-496047 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-08.jpg\" alt=\"hong-ngoai-08\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-08.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-08-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-08-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 style=\"text-align: justify;\"><b>L\u01b0u \u00fd khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb c\u00f3 h\u1ed3ng ngo\u1ea1i<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">\u0110\u1ec3 khai th\u00e1c hi\u1ec7u qu\u1ea3 v\u00e0 an to\u00e0n c\u00e1c thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng tia IR, b\u1ea1n n\u00ean l\u01b0u \u00fd:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\"><b>Kh\u00f4ng nh\u00ecn tr\u1ef1c ti\u1ebfp v\u00e0o ngu\u1ed3n ph\u00e1t h\u1ed3ng ngo\u1ea1i m\u1ea1nh<\/b><span style=\"font-weight: 400;\">, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u00e8n tr\u1ecb li\u1ec7u, c\u1ea3m bi\u1ebfn c\u00f4ng nghi\u1ec7p hay camera h\u1ed3ng ngo\u1ea1i, v\u00ec c\u00f3 th\u1ec3 g\u00e2y m\u1ecfi m\u1eaft ho\u1eb7c t\u1ed5n th\u01b0\u01a1ng gi\u00e1c m\u1ea1c khi ti\u1ebfp x\u00fac l\u00e2u.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>H\u00e3y gi\u1eef kho\u1ea3ng c\u00e1ch an to\u00e0n t\u1eeb 50 \u2013 100 cm<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 tr\u00e1nh b\u1ecfng da, kh\u00f4 da ho\u1eb7c qu\u00e1 nhi\u1ec7t c\u1ee5c b\u1ed9. \u0110\u1ed3ng th\u1eddi, tu\u00e2n th\u1ee7 \u0111\u00fang h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb y t\u1ebf, nh\u1eb1m \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 v\u00e0 tr\u00e1nh r\u1ee7i ro kh\u00f4ng mong mu\u1ed1n.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Th\u01b0\u1eddng xuy\u00ean v\u1ec7 sinh m\u1eaft ph\u00e1t v\u00e0 c\u1ea3m bi\u1ebfn h\u1ed3ng ngo\u1ea1i<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 tr\u00e1nh b\u1ee5i b\u1ea9n l\u00e0m gi\u1ea3m \u0111\u1ed9 ch\u00ednh x\u00e1c. H\u00e3y lau b\u1eb1ng kh\u0103n m\u1ec1m, tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng d\u00f9ng h\u00f3a ch\u1ea5t m\u1ea1nh.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Kh\u00f4ng n\u00ean t\u1ef1 \u00fd th\u00e1o l\u1eafp hay thay \u0111\u1ed5i c\u1ea5u tr\u00fac thi\u1ebft b\u1ecb<\/b><span style=\"font-weight: 400;\">, v\u00ec \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y h\u1ecfng h\u00f3c linh ki\u1ec7n ho\u1eb7c sai l\u1ec7ch h\u01b0\u1edbng ph\u00e1t tia. Lu\u00f4n <\/span><b>\u0111\u1eb7t thi\u1ebft b\u1ecb \u1edf n\u01a1i kh\u00f4 r\u00e1o, tho\u00e1ng m\u00e1t<\/b><span style=\"font-weight: 400;\">, tr\u00e1nh m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 cao.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>T\u1eaft thi\u1ebft b\u1ecb khi kh\u00f4ng s\u1eed d\u1ee5ng.<\/b><span style=\"font-weight: 400;\"> Vi\u1ec7c b\u1eadt thi\u1ebft b\u1ecb li\u00ean t\u1ee5c kh\u00f4ng ch\u1ec9 ti\u00eau hao \u0111i\u1ec7n n\u0103ng m\u00e0 c\u00f2n l\u00e0m n\u00f3ng c\u00e1c linh ki\u1ec7n, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tu\u00e2n th\u1ee7 nh\u1eefng nguy\u00ean t\u1eafc n\u00e0y s\u1ebd gi\u00fap b\u1ea1n <\/span><b>t\u1eadn d\u1ee5ng t\u1ed1i \u0111a l\u1ee3i \u00edch c\u1ee7a tia IR<\/b><span style=\"font-weight: 400;\">, \u0111\u1ed3ng th\u1eddi <\/span><b>b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u00e0 t\u0103ng tu\u1ed5i th\u1ecd cho thi\u1ebft b\u1ecb<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p style=\"text-align: justify;\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-09.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-09-300x200.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2025\/10\/hong-ngoai-09-768x512.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-496053 webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-09.jpg\" alt=\"hong-ngoai-09\" width=\"800\" height=\"533\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-09.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-09-300x200.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2025\/10\/hong-ngoai-09-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2 style=\"text-align: justify;\"><b>T\u1ea1m k\u1ebft<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Tia <strong>h\u1ed3ng ngo\u1ea1i<\/strong> \u2013 d\u00f9 v\u00f4 h\u00ecnh \u2013 l\u1ea1i \u0111\u00f3ng vai tr\u00f2 v\u00f4 c\u00f9ng quan tr\u1ecdng trong \u0111\u1eddi s\u1ed1ng v\u00e0 c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i. T\u1eeb nh\u1eefng v\u1eadt d\u1ee5ng quen thu\u1ed9c nh\u01b0 \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa, camera, cho \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng y h\u1ecdc v\u00e0 c\u00f4ng nghi\u1ec7p, h\u1ed3ng ngo\u1ea1i \u0111\u00e3 g\u00f3p ph\u1ea7n l\u00e0m cho cu\u1ed9c s\u1ed1ng ti\u1ec7n nghi v\u00e0 an to\u00e0n h\u01a1n. Tuy nhi\u00ean, <\/span><b>hi\u1ec3u \u0111\u00fang v\u00e0 s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch<\/b><span style=\"font-weight: 400;\"> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 tr\u00e1nh c\u00e1c r\u1ee7i ro ti\u1ec1m \u1ea9n. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 gi\u00fap b\u1ea1n c\u00f3 c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 <\/span><b>tia h\u1ed3ng ngo\u1ea1i l\u00e0 g\u00ec, \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng an to\u00e0n<\/b><span style=\"font-weight: 400;\">, t\u1eeb \u0111\u00f3 \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 trong c\u00f4ng vi\u1ec7c v\u00e0 sinh ho\u1ea1t h\u1eb1ng ng\u00e0y.<\/span><\/p>\n<p style=\"text-align: justify;\"><strong>XEM TH\u00caM:<\/strong><\/p>\n<p><strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/bep-tu-va-bep-hong-ngoai\/\">B\u1ebfp t\u1eeb v\u00e0 b\u1ebfp h\u1ed3ng ngo\u1ea1i: N\u00ean mua lo\u1ea1i n\u00e0o t\u1ed1t h\u01a1n?<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/may-do-nhiet-do-hong-ngoai\/\">M\u00e1y \u0111o nhi\u1ec7t \u0111\u1ed9 h\u1ed3ng ngo\u1ea1i lo\u1ea1i n\u00e0o t\u1ed1t? S\u1eed d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o cho ch\u00ednh x\u00e1c?<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tia h\u1ed3ng ngo\u1ea1i hay tia IR l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong th\u1ebf gi\u1edbi c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i, t\u1eeb \u0111i\u1ec1u khi\u1ec3n tivi, c\u1ea3m bi\u1ebfn c\u1eeda t\u1ef1 \u0111\u1ed9ng cho \u0111\u1ebfn camera gi\u00e1m s\u00e1t ban \u0111\u00eam. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5 v\u1ec1 b\u1ea3n ch\u1ea5t, c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u0169ng nh\u01b0 nh\u1eefng \u1ea3nh h\u01b0\u1edfng [&hellip;]<\/p>\n","protected":false},"author":113,"featured_media":496054,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29235,3910,30453],"tags":[],"class_list":["post-496032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goc-to-mo","category-kham-pha","category-kien-thuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tia h\u1ed3ng ngo\u1ea1i l\u00e0 g\u00ec? C\u00f3 tr\u00ean nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o? 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