{"id":454885,"date":"2025-05-05T20:02:42","date_gmt":"2025-05-05T13:02:42","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=454885"},"modified":"2025-05-05T20:02:42","modified_gmt":"2025-05-05T13:02:42","slug":"tia-hong-ngoai","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/tia-hong-ngoai\/","title":{"rendered":"Tia h\u1ed3ng ngo\u1ea1i l\u00e0 g\u00ec? C\u00f3 tr\u00ean thi\u1ebft b\u1ecb n\u00e0o? \u1ee8ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng"},"content":{"rendered":"

Tia h\u1ed3ng ngo\u1ea1i<\/b> l\u00e0 m\u1ed9t lo\u1ea1i b\u1ee9c x\u1ea1 kh\u00f4ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c b\u1eb1ng m\u1eaft th\u01b0\u1eddng nh\u01b0ng l\u1ea1i hi\u1ec7n di\u1ec7n ph\u1ed5 bi\u1ebfn trong nhi\u1ec1u thi\u1ebft b\u1ecb c\u00f4ng ngh\u1ec7 xung quanh ch\u00fang ta.. V\u1eady tia IR l\u00e0 g\u00ec? N\u00f3 c\u00f3 m\u1eb7t tr\u00ean nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o v\u00e0 mang l\u1ea1i l\u1ee3i \u00edch g\u00ec trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y? \u00c1nh s\u00e1ng h\u1ed3ng ngo\u1ea1i c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ee9c kh\u1ecfe kh\u00f4ng? H\u00e3y c\u00f9ng Ho\u00e0ng H\u00e0 Mobile kh\u00e1m ph\u00e1 ngay b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 lo\u1ea1i tia \u0111\u1eb7c bi\u1ec7t n\u00e0y nh\u00e9.<\/span><\/p>\n

Tia h\u1ed3ng ngo\u1ea1i l\u00e0 g\u00ec?<\/b><\/h2>\n

Tia Infrared \u2013 Tia IR hay c\u00f2n g\u1ecdi l\u00e0 b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i, l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a ph\u1ed5 \u0111i\u1ec7n t\u1eeb, t\u1ed3n t\u1ea1i ngay b\u00ean d\u01b0\u1edbi v\u00f9ng \u00e1nh s\u00e1ng \u0111\u1ecf m\u00e0 m\u1eaft ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y. \u0110\u00e2y l\u00e0 m\u1ed9t lo\u1ea1i s\u00f3ng \u0111i\u1ec7n t\u1eeb c\u00f3 b\u01b0\u1edbc s\u00f3ng dao \u0111\u1ed9ng t\u1eeb kho\u1ea3ng 700 nanomet \u0111\u1ebfn 1 milimet, d\u00e0i h\u01a1n \u00e1nh s\u00e1ng kh\u1ea3 ki\u1ebfn nh\u01b0ng ng\u1eafn h\u01a1n s\u00f3ng radio. D\u00f9 v\u00f4 h\u00ecnh, tia IR l\u1ea1i hi\u1ec7n di\u1ec7n m\u1ed9t c\u00e1ch r\u1ea5t r\u00f5 r\u00e0ng trong m\u00f4i tr\u01b0\u1eddng s\u1ed1ng, t\u1eeb \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi \u0111\u1ebfn ch\u00ednh c\u01a1 th\u1ec3 c\u1ee7a con ng\u01b0\u1eddi.<\/span><\/p>\n

\"tia-hong-ngoai-1\"<\/picture><\/p>\n

Kh\u00e1c v\u1edbi nhi\u1ec1u lo\u1ea1i b\u1ee9c x\u1ea1 kh\u00e1c, b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i \u0111\u01b0\u1ee3c ph\u00e1t ra m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean t\u1eeb t\u1ea5t c\u1ea3 c\u00e1c v\u1eadt th\u1ec3 c\u00f3 nhi\u1ec7t \u0111\u1ed9, k\u1ec3 c\u1ea3 khi ch\u00fang kh\u00f4ng ph\u00e1t s\u00e1ng. Ngay c\u1ea3 m\u1ed9t v\u1eadt th\u1ec3 t\u01b0\u1edfng ch\u1eebng nh\u01b0 l\u1ea1nh l\u1ebdo c\u0169ng v\u1eabn ph\u00e1t ra b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i \u1edf m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh n\u1ebfu nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u00f3 cao h\u01a1n \u0111\u1ed9 kh\u00f4ng tuy\u1ec7t \u0111\u1ed1i. Nh\u1edd kh\u1ea3 n\u0103ng n\u00e0y, tia IR \u0111\u01b0\u1ee3c xem l\u00e0 c\u00f4ng c\u1ee5 l\u00fd t\u01b0\u1edfng \u0111\u1ec3 quan s\u00e1t, \u0111o l\u01b0\u1eddng v\u00e0 truy\u1ec1n t\u1ea3i nhi\u1ec7t l\u01b0\u1ee3ng.<\/span><\/p>\n

Ph\u00e2n lo\u1ea1i tia h\u1ed3ng ngo\u1ea1i<\/b><\/h2>\n

Tuy kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 tia b\u1ee9c x\u1ea1 \u0111\u1ec1u gi\u1ed1ng nhau nh\u01b0ng khi d\u1ef1a tr\u00ean b\u01b0\u1edbc s\u00f3ng v\u00e0 n\u0103ng l\u01b0\u1ee3ng, lo\u1ea1i tia n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh 3 nh\u00f3m ch\u00ednh, bao g\u1ed3m tia g\u1ea7n, tia trung v\u00e0 tia xa.<\/span><\/p>\n

H\u1ed3ng ngo\u1ea1i g\u1ea7n (NIR)<\/b><\/h3>\n

Lo\u1ea1i tia n\u00e0y n\u1eb1m \u1edf ranh gi\u1edbi gi\u1eefa \u00e1nh s\u00e1ng kh\u1ea3 ki\u1ebfn v\u00e0 v\u00f9ng h\u1ed3ng ngo\u1ea1i trong ph\u1ed5 \u0111i\u1ec7n t\u1eeb, v\u1edbi b\u01b0\u1edbc s\u00f3ng dao \u0111\u1ed9ng t\u1eeb kho\u1ea3ng t\u1eeb\u00a0 1,4 nm \u0111\u1ebfn 3 nm. Do \u0111\u1eb7c \u0111i\u1ec3m c\u00f3 b\u01b0\u1edbc s\u00f3ng t\u01b0\u01a1ng \u0111\u1ed1i ng\u1eafn v\u00e0 n\u1eb1m g\u1ea7n v\u1edbi v\u00f9ng \u00e1nh s\u00e1ng m\u00e0 m\u1eaft ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y, NIR mang nhi\u1ec1u \u0111\u1eb7c \u0111i\u1ec3m quang h\u1ecdc gi\u1ed1ng v\u1edbi \u00e1nh s\u00e1ng th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng l\u1ea1i kh\u00f4ng \u0111\u01b0\u1ee3c m\u1eaft ng\u01b0\u1eddi tr\u1ef1c ti\u1ebfp c\u1ea3m nh\u1eadn.<\/span><\/p>\n

\"tia-hong-ngoai-2\"<\/picture><\/p>\n

\u0110\u1eb7c t\u00ednh n\u1ed5i b\u1eadt c\u1ee7a NIR l\u00e0 kh\u1ea3 n\u0103ng truy\u1ec1n xa trong kh\u00f4ng kh\u00ed, do \u00edt b\u1ecb h\u1ea5p th\u1ee5 b\u1edfi h\u01a1i n\u01b0\u1edbc v\u00e0 c\u00e1c ph\u00e2n t\u1eed kh\u00ed. T\u1eeb \u0111\u00f3 gi\u00fap NIR tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng trong c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n d\u1eabn kh\u00f4ng d\u00e2y v\u00e0 vi\u1ec5n th\u00f4ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 s\u1ee3i quang. T\u00edn hi\u1ec7u \u00e1nh s\u00e1ng \u1edf v\u00f9ng h\u1ed3ng ngo\u1ea1i g\u1ea7n c\u00f3 th\u1ec3 truy\u1ec1n qua c\u00e1c s\u1ee3i th\u1ee7y tinh d\u00e0i v\u1edbi t\u1ed5n th\u1ea5t n\u0103ng l\u01b0\u1ee3ng th\u1ea5p, g\u00f3p ph\u1ea7n quan tr\u1ecdng trong vi\u1ec7c x\u00e2y d\u1ef1ng h\u1ea1 t\u1ea7ng internet t\u1ed1c \u0111\u1ed9 cao ng\u00e0y nay.<\/span><\/p>\n

H\u1ed3ng ngo\u1ea1i trung (MIR)<\/b><\/h3>\n

\u0110\u00e2y l\u00e0 m\u1ed9t ph\u00e2n v\u00f9ng quan tr\u1ecdng trong ph\u1ed5 h\u1ed3ng ngo\u1ea1i, c\u00f3 b\u01b0\u1edbc s\u00f3ng n\u1eb1m trong kho\u1ea3ng t\u1eeb 3 nm \u0111\u1ebfn 50 nm. So v\u1edbi <\/span>tia h\u1ed3ng ngo\u1ea1i g\u1ea7n<\/b>, MIR c\u00f3 b\u01b0\u1edbc s\u00f3ng d\u00e0i h\u01a1n v\u00e0 mang nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t h\u01a1n, khi\u1ebfn n\u00f3 \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c \u1ee9ng d\u1ee5ng li\u00ean quan \u0111\u1ebfn ph\u00e1t hi\u1ec7n v\u00e0 \u0111o l\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9. V\u1edbi kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c m\u1ea1nh m\u1ebd v\u1edbi b\u1ee9c x\u1ea1 nhi\u1ec7t ph\u00e1t ra t\u1eeb v\u1eadt th\u1ec3, MIR \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c c\u00f4ng ngh\u1ec7 c\u1ea3m bi\u1ebfn v\u00e0 gi\u00e1m s\u00e1t nhi\u1ec7t.<\/span><\/p>\n

\"tia-hong-ngoai-3\"<\/picture><\/p>\n

Th\u00eam v\u00e0o \u0111\u00f3, \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a MIR l\u00e0 trong c\u00e1c c\u1ea3m bi\u1ebfn nhi\u1ec7t v\u00e0 thi\u1ebft b\u1ecb nh\u00ecn \u0111\u00eam. Nh\u1edd kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n b\u1ee9c x\u1ea1 nhi\u1ec7t m\u00e0 m\u1eaft ng\u01b0\u1eddi kh\u00f4ng th\u1ec3 th\u1ea5y, c\u00e1c thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng tia MIR c\u00f3 th\u1ec3 ghi nh\u1eadn h\u00ecnh \u1ea3nh nhi\u1ec7t c\u1ee7a ng\u01b0\u1eddi v\u00e0 v\u1eadt th\u1ec3, ngay c\u1ea3 trong b\u00f3ng t\u1ed1i ho\u00e0n to\u00e0n. \u0110i\u1ec1u n\u00e0y c\u1ef1c k\u1ef3 h\u1eefu \u00edch trong l\u0129nh v\u1ef1c an ninh, qu\u00e2n s\u1ef1, c\u1ee9u h\u1ed9 v\u00e0 nghi\u00ean c\u1ee9u \u0111\u1ed9ng v\u1eadt hoang d\u00e3 v\u00e0o ban \u0111\u00eam.<\/span><\/p>\n

H\u1ed3ng ngo\u1ea1i xa (FIR)<\/b><\/h3>\n

Lo\u1ea1i tia n\u00e0y c\u00f3 b\u01b0\u1edbc s\u00f3ng d\u00e0i nh\u1ea5t trong v\u00f9ng h\u1ed3ng ngo\u1ea1i, dao \u0111\u1ed9ng t\u1eeb kho\u1ea3ng t\u1eeb 50 nm \u0111\u1ebfn 1000 nm. V\u1edbi b\u01b0\u1edbc s\u00f3ng l\u1edbn v\u00e0 n\u0103ng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n so v\u1edbi c\u00e1c d\u1ea3i h\u1ed3ng ngo\u1ea1i g\u1ea7n v\u00e0 trung, tia FIR ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c c\u1ea3m nh\u1eadn d\u01b0\u1edbi d\u1ea1ng nhi\u1ec7t v\u00e0 l\u00e0 lo\u1ea1i b\u1ee9c x\u1ea1 nhi\u1ec7t ph\u1ed5 bi\u1ebfn ph\u00e1t ra t\u1eeb c\u00e1c v\u1eadt th\u1ec3 c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao nh\u01b0 c\u01a1 th\u1ec3 con ng\u01b0\u1eddi, \u0111\u1ed9ng v\u1eadt, b\u1ec1 m\u1eb7t Tr\u00e1i \u0110\u1ea5t v\u00e0 c\u00e1c thi\u1ebft b\u1ecb s\u01b0\u1edfi \u1ea5m.<\/span><\/p>\n

\"tia-hong-ngoai-4\"<\/picture><\/p>\n

Kh\u00e1c v\u1edbi NIR ch\u1ee7 y\u1ebfu ph\u1ee5c v\u1ee5 truy\u1ec1n t\u00edn hi\u1ec7u ho\u1eb7c h\u00ecnh \u1ea3nh, FIR\u00a0 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c l\u0129nh v\u1ef1c li\u00ean quan \u0111\u1ebfn truy\u1ec1n v\u00e0 ki\u1ec3m so\u00e1t nhi\u1ec7t l\u01b0\u1ee3ng. Ch\u1eb3ng h\u1ea1n nh\u01b0 trong c\u00e1c h\u1ec7 th\u1ed1ng s\u01b0\u1edfi \u1ea5m b\u1eb1ng h\u1ed3ng ngo\u1ea1i, n\u01a1i tia FIR \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m n\u00f3ng v\u1eadt th\u1ec3 m\u1ed9t c\u00e1ch tr\u1ef1c ti\u1ebfp thay v\u00ec l\u00e0m n\u00f3ng kh\u00f4ng kh\u00ed. Nh\u01b0 th\u1ebf s\u1ebd gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, t\u0103ng hi\u1ec7u su\u1ea5t l\u00e0m \u1ea5m v\u00e0 mang l\u1ea1i c\u1ea3m gi\u00e1c d\u1ec5 ch\u1ecbu h\u01a1n cho con ng\u01b0\u1eddi. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong nh\u00e0 \u1edf, ph\u00f2ng x\u00f4ng h\u01a1i, ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe v\u00e0 th\u1ec3 thao.<\/span><\/p>\n

\u1ee8ng d\u1ee5ng c\u1ee7a tia h\u1ed3ng ngo\u1ea1i trong \u0111\u1eddi s\u1ed1ng<\/b><\/h2>\n

Trong y h\u1ecdc, nh\u1edd kh\u1ea3 n\u0103ng th\u00e2m nh\u1eadp s\u00e2u v\u00e0o m\u00f4 m\u1ec1m, n\u00f3 \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00e1c li\u1ec7u ph\u00e1p nhi\u1ec7t \u0111\u1ec3 l\u00e0m gi\u00e3n c\u01a1, gi\u1ea3m \u0111au, h\u1ed7 tr\u1ee3 tu\u1ea7n ho\u00e0n m\u00e1u v\u00e0 \u0111i\u1ec1u tr\u1ecb c\u00e1c b\u1ec7nh v\u1ec1 x\u01b0\u01a1ng kh\u1edbp, vi\u00eam c\u01a1. Ngo\u00e0i tr\u1ecb li\u1ec7u, tia IR c\u00f2n hi\u1ec7n di\u1ec7n trong c\u00e1c thi\u1ebft b\u1ecb ch\u1ea9n \u0111o\u00e1n nh\u01b0 nhi\u1ec7t k\u1ebf \u0111i\u1ec7n t\u1eed, m\u00e1y \u0111o th\u00e2n nhi\u1ec7t kh\u00f4ng ti\u1ebfp x\u00fac.<\/span><\/p>\n

V\u1edbi c\u00f4ng ngh\u1ec7 v\u00e0 truy\u1ec1n th\u00f4ng, tia IR l\u00e0 n\u1ec1n t\u1ea3ng cho nhi\u1ec1u thi\u1ebft b\u1ecb \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y, nh\u01b0 \u0111i\u1ec1u khi\u1ec3n TV, m\u00e1y l\u1ea1nh hay \u0111\u1ea7u \u0111\u0129a. Song song, m\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 truy\u1ec1n t\u00edn hi\u1ec7u kh\u00f4ng d\u00e2y c\u0169ng s\u1eed d\u1ee5ng s\u00f3ng h\u1ed3ng ngo\u1ea1i \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u trong kho\u1ea3ng c\u00e1ch ng\u1eafn.<\/span><\/p>\n

\"tia-hong-ngoai-5\"<\/picture><\/p>\n

Trong l\u0129nh v\u1ef1c an ninh v\u00e0 qu\u1ed1c ph\u00f2ng, c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 k\u00ednh nh\u00ecn \u0111\u00eam, camera h\u1ed3ng ngo\u1ea1i c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n v\u1eadt th\u1ec3 d\u1ef1a tr\u00ean nhi\u1ec7t l\u01b0\u1ee3ng t\u1ecfa ra, cho ph\u00e9p ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng y\u1ebfu ho\u1eb7c c\u00f3 v\u1eadt c\u1ea3n nh\u01b0 s\u01b0\u01a1ng m\u00f9, kh\u00f3i b\u1ee5i. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c chi\u1ebfn d\u1ecbch qu\u00e2n s\u1ef1, ki\u1ec3m so\u00e1t bi\u00ean gi\u1edbi ho\u1eb7c c\u1ee9u h\u1ed9 c\u1ee9u n\u1ea1n.<\/span><\/p>\n

N\u00f4ng nghi\u1ec7p v\u00e0 c\u00f4ng ngh\u1ec7 th\u1ef1c ph\u1ea9m c\u0169ng t\u1eadn d\u1ee5ng h\u1ed3ng ngo\u1ea1i \u0111\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t s\u1ea3n xu\u1ea5t. Qu\u00e1 tr\u00ecnh s\u1ea5y kh\u00f4 n\u00f4ng s\u1ea3n b\u1eb1ng h\u1ed3ng ngo\u1ea1i gi\u00fap r\u00fat ng\u1eafn th\u1eddi gian ch\u1ebf bi\u1ebfn, gi\u1eef \u0111\u01b0\u1ee3c m\u00e0u s\u1eafc v\u00e0 gi\u00e1 tr\u1ecb dinh d\u01b0\u1ee1ng.<\/span><\/p>\n

Trong c\u00f4ng nghi\u1ec7p, tia IR \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u00e1m s\u00e1t t\u00ecnh tr\u1ea1ng v\u1eadn h\u00e0nh c\u1ee7a thi\u1ebft b\u1ecb v\u00e0 d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t. C\u00e1c c\u1ea3m bi\u1ebfn nhi\u1ec7t h\u1ed3ng ngo\u1ea1i c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n \u0111i\u1ec3m n\u00f3ng b\u1ea5t th\u01b0\u1eddng, t\u1eeb \u0111\u00f3 c\u1ea3nh b\u00e1o nguy c\u01a1 ch\u00e1y n\u1ed5 ho\u1eb7c h\u01b0 h\u1ea1i thi\u1ebft b\u1ecb.<\/span><\/p>\n

C\u00f4ng d\u1ee5ng c\u1ee7a tia h\u1ed3ng ngo\u1ea1i \u0111\u1ed1i v\u1edbi s\u1ee9c kh\u1ecfe<\/b><\/h2>\n

Kh\u00e1c v\u1edbi c\u00e1c h\u00ecnh th\u1ee9c l\u00e0m n\u00f3ng b\u1ec1 m\u1eb7t th\u00f4ng th\u01b0\u1eddng, nhi\u1ec7t l\u01b0\u1ee3ng t\u1eeb s\u00f3ng h\u1ed3ng ngo\u1ea1i c\u00f3 th\u1ec3 xuy\u00ean qua da v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c l\u1edbp m\u00f4, c\u01a1 v\u00e0 th\u1eadm ch\u00ed l\u00e0 m\u1ea1ch m\u00e1u. \u0110i\u1ec1u n\u00e0y kh\u00f4ng nh\u1eefng t\u1ea1o c\u1ea3m gi\u00e1c th\u01b0 gi\u00e3n m\u00e0 c\u00f2n h\u1ed7 tr\u1ee3 ph\u1ee5c h\u1ed3i ch\u1ee9c n\u0103ng v\u1eadn \u0111\u1ed9ng.\u00a0<\/span><\/p>\n

B\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i c\u00f2n gi\u00fap k\u00edch th\u00edch c\u00e1c qu\u00e1 tr\u00ecnh sinh h\u1ecdc trong c\u01a1 th\u1ec3. Vi\u1ec7c t\u0103ng c\u01b0\u1eddng trao \u0111\u1ed5i ch\u1ea5t t\u1ea1i khu v\u1ef1c \u0111\u01b0\u1ee3c chi\u1ebfu x\u1ea1 g\u00f3p ph\u1ea7n th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh s\u1eeda ch\u1eefa m\u00f4 t\u1ed5n th\u01b0\u01a1ng, h\u1ed7 tr\u1ee3 t\u00e1i t\u1ea1o t\u1ebf b\u00e0o v\u00e0 l\u00e0m l\u00e0nh v\u1ebft th\u01b0\u01a1ng nhanh h\u01a1n. \u0110\u00e2y l\u00e0 l\u00fd do v\u00ec sao c\u00e1c thi\u1ebft b\u1ecb tr\u1ecb li\u1ec7u b\u1eb1ng h\u1ed3ng ngo\u1ea1i th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ph\u1ee5c h\u1ed3i ch\u1ee9c n\u0103ng, \u0111i\u1ec1u tr\u1ecb vi\u00eam g\u00e2n, vi\u00eam m\u00f4 m\u1ec1m hay t\u1ed5n th\u01b0\u01a1ng sau ph\u1eabu thu\u1eadt.<\/span><\/p>\n

\"tia-hong-ngoai-6\"<\/picture><\/p>\n

M\u1ed9t c\u00f4ng d\u1ee5ng kh\u00e1c l\u00e0 t\u00e1c d\u1ee5ng th\u01b0 gi\u00e3n tinh th\u1ea7n v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng gi\u1ea5c ng\u1ee7. Th\u00f4ng qua vi\u1ec7c l\u00e0m \u1ea5m c\u01a1 th\u1ec3 nh\u1eb9 nh\u00e0ng, gi\u00fap gi\u1ea3m m\u1ee9c \u0111\u1ed9 c\u0103ng th\u1eb3ng, l\u00e0m d\u1ecbu h\u1ec7 th\u1ea7n kinh v\u00e0 \u0111i\u1ec1u h\u00f2a c\u1ea3m x\u00fac. Khi c\u01a1 th\u1ec3 \u0111\u1ea1t tr\u1ea1ng th\u00e1i th\u01b0 gi\u00e3n s\u00e2u, n\u00e3o b\u1ed9 d\u1ec5 d\u00e0ng s\u1ea3n sinh c\u00e1c hormone li\u00ean quan \u0111\u1ebfn gi\u1ea5c ng\u1ee7 nh\u01b0 melatonin, t\u1eeb \u0111\u00f3 h\u1ed7 tr\u1ee3 ng\u01b0\u1eddi d\u00f9ng ng\u1ee7 ngon v\u00e0 s\u00e2u h\u01a1n.<\/span><\/p>\n

Cu\u1ed1i c\u00f9ng, b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i gi\u00fap c\u1ea3i thi\u1ec7n tu\u1ea7n ho\u00e0n b\u1ea1ch huy\u1ebft, m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong h\u1ec7 mi\u1ec5n d\u1ecbch, \u0111\u1ed3ng th\u1eddi t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3 nh\u1eb9 nh\u00e0ng, m\u00f4 ph\u1ecfng ph\u1ea3n \u1ee9ng s\u1ed1t sinh l\u00fd. Nh\u1edd v\u1eady, c\u01a1 th\u1ec3 \u0111\u01b0\u1ee3c \u201ck\u00edch ho\u1ea1t\u201d \u0111\u1ec3 t\u0103ng s\u1ea3n xu\u1ea5t t\u1ebf b\u00e0o b\u1ea1ch c\u1ea7u v\u00e0 kh\u00e1ng th\u1ec3, gi\u00fap ph\u00f2ng ng\u1eeba b\u1ec7nh t\u1eadt hi\u1ec7u qu\u1ea3 h\u01a1n.<\/span><\/p>\n

T\u00e1c h\u1ea1i c\u1ee7a tia h\u1ed3ng ngo\u1ea1i \u0111\u1ed1i v\u1edbi s\u1ee9c kh\u1ecfe<\/b><\/h2>\n

M\u1eb7c d\u00f9 b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong y h\u1ecdc v\u00e0 \u0111\u1eddi s\u1ed1ng nh\u1edd kh\u1ea3 n\u0103ng ph\u00e1t nhi\u1ec7t v\u00e0 h\u1ed7 tr\u1ee3 \u0111i\u1ec1u tr\u1ecb, song vi\u1ec7c ti\u1ebfp x\u00fac v\u1edbi lo\u1ea1i b\u1ee9c x\u1ea1 n\u00e0y trong th\u1eddi gian d\u00e0i ho\u1eb7c \u1edf c\u01b0\u1eddng \u0111\u1ed9 cao c\u00f3 th\u1ec3 g\u00e2y ra nhi\u1ec1u \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi.\u00a0<\/span><\/p>\n

Khi da ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i trong th\u1eddi gian d\u00e0i, \u0111\u1eb7c bi\u1ec7t \u1edf c\u01b0\u1eddng \u0111\u1ed9 nhi\u1ec7t cao nh\u01b0 trong ph\u00f2ng x\u00f4ng h\u01a1i ho\u1eb7c g\u1ea7n c\u00e1c thi\u1ebft b\u1ecb s\u01b0\u1edfi, nhi\u1ec7t l\u01b0\u1ee3ng s\u1ebd th\u00e2m nh\u1eadp v\u00e0o l\u1edbp bi\u1ec3u b\u00ec g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng b\u1ecfng nhi\u1ec7t.\u00a0<\/span><\/p>\n

H\u01a1n n\u1eefa, tia IR c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a da. N\u1ebfu ti\u1ebfp x\u00fac l\u00e2u d\u00e0i, tia n\u00e0y c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 c\u1ea5u tr\u00fac collagen v\u00e0 elastin. K\u1ebft qu\u1ea3 l\u00e0 da tr\u1edf n\u00ean ch\u1ea3y x\u1ec7, h\u00ecnh th\u00e0nh n\u1ebfp nh\u0103n s\u1edbm v\u00e0 m\u1ea5t \u0111i \u0111\u1ed9 s\u0103n ch\u1eafc t\u1ef1 nhi\u00ean, ngay c\u1ea3 khi kh\u00f4ng ti\u1ebfp x\u00fac v\u1edbi tia t\u1eed ngo\u1ea1i (UV).<\/span><\/p>\n

\"tia-hong-ngoai-7\"<\/picture><\/p>\n

T\u00e1c \u0111\u1ed9ng l\u00ean m\u1eaft c\u0169ng l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 nghi\u00eam tr\u1ecdng. V\u00f5ng m\u1ea1c v\u00e0 th\u1ee7y tinh th\u1ec3 c\u00f3 th\u1ec3 b\u1ecb t\u1ed5n th\u01b0\u01a1ng khi ti\u1ebfp x\u00fac v\u1edbi s\u00f3ng h\u1ed3ng ngo\u1ea1i \u1edf c\u01b0\u1eddng \u0111\u1ed9 cao. Vi\u1ec7c n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ee5c th\u1ee7y tinh th\u1ec3, gi\u1ea3m th\u1ecb l\u1ef1c ho\u1eb7c g\u00e2y t\u1ed5n th\u01b0\u01a1ng kh\u00f4ng h\u1ed3i ph\u1ee5c cho m\u1eaft n\u1ebfu kh\u00f4ng c\u00f3 bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 th\u00edch h\u1ee3p.<\/span><\/p>\n

H\u1ec7 th\u1ea7n kinh c\u0169ng c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng khi ti\u1ebfp x\u00fac l\u00e2u d\u00e0i v\u1edbi m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao. C\u1ea3m gi\u00e1c m\u1ec7t m\u1ecfi, m\u1ea5t t\u1eadp trung, suy nh\u01b0\u1ee3c tinh th\u1ea7n l\u00e0 nh\u1eefng bi\u1ec3u hi\u1ec7n th\u01b0\u1eddng th\u1ea5y \u1edf nh\u1eefng ng\u01b0\u1eddi l\u00e0m vi\u1ec7c trong \u0111i\u1ec1u ki\u1ec7n n\u1eafng n\u00f3ng, ti\u1ebfp x\u00fac v\u1edbi tia IR m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ngh\u1ec9 ng\u01a1i \u0111\u00fang c\u00e1ch.<\/span><\/p>\n

Tia h\u1ed3ng ngo\u1ea1i c\u00f3 tr\u00ean nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o?<\/b><\/h2>\n

C\u00e1c lo\u1ea1i remote d\u00f9ng cho TV, \u0111\u1ea7u DVD, m\u00e1y l\u1ea1nh, qu\u1ea1t \u0111i\u1ec7n hay c\u00e1c thi\u1ebft b\u1ecb gia d\u1ee5ng th\u00f4ng minh \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng nh\u1edd t\u00edn hi\u1ec7u h\u1ed3ng ngo\u1ea1i. Khi ng\u01b0\u1eddi d\u00f9ng b\u1ea5m n\u00fat, \u0111i\u1ec1u khi\u1ec3n ph\u00e1t ra ch\u00f9m tia IR mang th\u00f4ng tin l\u1ec7nh t\u1edbi thi\u1ebft b\u1ecb nh\u1eadn, gi\u00fap k\u00edch ho\u1ea1t ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh ch\u1ee9c n\u0103ng mong mu\u1ed1n.<\/span><\/p>\n

\"tia-hong-ngoai-8\"<\/picture><\/p>\n

C\u00e1c thi\u1ebft b\u1ecb c\u1ea3m bi\u1ebfn chuy\u1ec3n \u0111\u1ed9ng ho\u1eb7c c\u1ea3m bi\u1ebfn nhi\u1ec7t c\u0169ng s\u1eed d\u1ee5ng b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt th\u1ec3 trong kh\u00f4ng gian. V\u00ed d\u1ee5, \u0111\u00e8n chi\u1ebfu s\u00e1ng t\u1ef1 \u0111\u1ed9ng trong h\u00e0nh lang ho\u1eb7c nh\u00e0 v\u1ec7 sinh ho\u1ea1t \u0111\u1ed9ng khi c\u00f3 ng\u01b0\u1eddi b\u01b0\u1edbc v\u00e0o l\u00e0 nh\u1edd c\u1ea3m bi\u1ebfn h\u1ed3ng ngo\u1ea1i ph\u00e1t hi\u1ec7n th\u00e2n nhi\u1ec7t.<\/span><\/p>\n

M\u1ed9t s\u1ed1 m\u1eabu \u0111i\u1ec7n tho\u1ea1i Android nh\u01b0 Xiaomi, Huawei, Honor, ho\u1eb7c m\u1ed9t v\u00e0i d\u00f2ng Samsung v\u00e0 LG \u0111\u1eddi c\u0169 \u0111\u01b0\u1ee3c trang b\u1ecb c\u1ed5ng h\u1ed3ng ngo\u1ea1i. Hay m\u1ed9t s\u1ed1 hub trung t\u00e2m \u0111i\u1ec1u khi\u1ec3n nh\u00e0 th\u00f4ng minh c\u00f3 t\u00edch h\u1ee3p tia IR \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n tivi, \u0111i\u1ec1u h\u00f2a, \u0111\u1ea7u thu k\u1ef9 thu\u1eadt s\u1ed1 t\u1eeb xa qua \u1ee9ng d\u1ee5ng tr\u00ean smartphone.<\/span><\/p>\n

L\u01b0u \u00fd khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb c\u00f3 tia h\u1ed3ng ngo\u1ea1i<\/b><\/h2>\n

Tr\u01b0\u1edbc h\u1ebft, b\u1ea1n tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng n\u00ean nh\u00ecn tr\u1ef1c ti\u1ebfp v\u00e0o ngu\u1ed3n ph\u00e1t b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i xa, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c thi\u1ebft b\u1ecb c\u01b0\u1eddng \u0111\u1ed9 cao. Tuy lo\u1ea1i tia n\u00e0y kh\u00f4ng nh\u00ecn th\u1ea5y b\u1eb1ng m\u1eaft th\u01b0\u1eddng, nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n th\u01b0\u01a1ng cho m\u1eaft, th\u1eadm ch\u00ed l\u00e0m h\u1ecfng v\u00f5ng m\u1ea1c n\u1ebfu ti\u1ebfp x\u00fac l\u00e2u d\u00e0i. V\u00ec v\u1eady, khi v\u1eadn h\u00e0nh c\u00e1c thi\u1ebft b\u1ecb n\u00e0y, n\u00ean gi\u1eef kho\u1ea3ng c\u00e1ch an to\u00e0n v\u00e0 kh\u00f4ng h\u01b0\u1edbng tia v\u00e0o m\u1eb7t ho\u1eb7c m\u1eaft.<\/span><\/p>\n

\"tia-hong-ngoai-9\"<\/picture><\/p>\n

Th\u1ee9 hai, b\u1ea1n c\u1ea7n tr\u00e1nh ch\u1ea1m tay v\u00e0o b\u1ed9 ph\u1eadn ph\u00e1t tia khi thi\u1ebft b\u1ecb \u0111ang ho\u1ea1t \u0111\u1ed9ng, v\u00ec \u0111\u00e2y l\u00e0 khu v\u1ef1c sinh nhi\u1ec7t l\u1edbn, c\u00f3 th\u1ec3 g\u00e2y b\u1ecfng n\u1ebfu ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp. Nhi\u1ec1u ng\u01b0\u1eddi s\u1eed d\u1ee5ng \u0111\u00e8n h\u1ed3ng ngo\u1ea1i tr\u1ecb li\u1ec7u t\u1ea1i nh\u00e0 th\u01b0\u1eddng c\u00f3 th\u00f3i quen \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft b\u1ecb trong khi \u0111ang b\u1eadt, \u0111i\u1ec1u n\u00e0y ti\u1ec1m \u1ea9n nguy c\u01a1 g\u00e2y t\u1ed5n th\u01b0\u01a1ng da ho\u1eb7c l\u00e0m h\u1ecfng thi\u1ebft b\u1ecb.<\/span><\/p>\n

Ngo\u00e0i ra, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng tia IR kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1eed d\u1ee5ng tr\u00ean m\u1ed9t s\u1ed1 v\u00f9ng da ho\u1eb7c t\u00ecnh tr\u1ea1ng b\u1ec7nh l\u00fd \u0111\u1eb7c bi\u1ec7t. Kh\u00f4ng n\u00ean d\u00f9ng c\u00e1c thi\u1ebft b\u1ecb ph\u00e1t s\u00f3ng h\u1ed3ng ngo\u1ea1i l\u00ean nh\u1eefng v\u00f9ng da \u0111ang ch\u1ea3y m\u00e1u, c\u00f3 v\u1ebft th\u01b0\u01a1ng h\u1edf, s\u1eb9o l\u1ed3i, vi\u00eam nhi\u1ec5m c\u1ea5p t\u00ednh, m\u01b0ng m\u1ee7 ho\u1eb7c c\u00e1c khu v\u1ef1c c\u00f3 d\u1ea5u hi\u1ec7u kh\u1ed1i u \u00e1c t\u00ednh, b\u1ec7nh lao. T\u00e1c \u0111\u1ed9ng nhi\u1ec7t t\u1eeb b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i c\u00f3 th\u1ec3 l\u00e0m t\u00ecnh tr\u1ea1ng b\u1ec7nh n\u1eb7ng th\u00eam ho\u1eb7c g\u00e2y ph\u1ea3n \u1ee9ng ph\u1ee5 kh\u00f4ng mong mu\u1ed1n.<\/span><\/p>\n

K\u1ebft lu\u1eadn<\/b><\/h2>\n

Nh\u01b0 v\u1eady, Ho\u00e0ng H\u00e0 Mobile \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n t\u1ea5t c\u1ea3 nh\u1eefng th\u00f4ng tin li\u00ean quan \u0111\u1ebfn <\/span>tia h\u1ed3ng ngo\u1ea1i l\u00e0 g\u00ec<\/b>, c\u0169ng nh\u01b0 t\u00ednh \u1ee9ng d\u1ee5ng c\u1ee7a lo\u1ea1i tia n\u00e0y v\u00e0 l\u01b0u \u00fd khi s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb c\u00f3 tia IR. Hy v\u1ecdng, n\u1ed9i dung tr\u00ean s\u1ebd mang \u0111\u1ebfn cho b\u1ea1n c\u00e1c ki\u1ebfn th\u1ee9c h\u1eefu \u00edch trong vi\u1ec7c s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb c\u00f4ng ngh\u1ec7 nh\u01b0ng v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c an to\u00e0n cho s\u1ee9c kh\u1ecfe.<\/span><\/p>\n

Xem th\u00eam:<\/b><\/p>\n