{"id":75345,"date":"2025-09-30T16:04:14","date_gmt":"2025-09-30T09:04:14","guid":{"rendered":"https:\/\/www.baohoxanh.com\/blog\/?p=75345"},"modified":"2026-09-06T18:28:32","modified_gmt":"2026-09-06T11:28:32","slug":"4-dac-diem-cau-tao-mat-na-han-doi-dau-tot","status":"publish","type":"post","link":"https:\/\/www.baohoxanh.com\/blog\/4-dac-diem-cau-tao-mat-na-han-doi-dau-tot\/","title":{"rendered":"4 L\u01b0u \u00dd V\u1ec1 C\u1ea5u T\u1ea1o V\u00e0 C\u00f4ng Ngh\u1ec7 M\u1eb7t N\u1ea1 H\u00e0n \u0110\u1ed9i \u0110\u1ea7u"},"content":{"rendered":"Trong m\u00f4i tr\u01b0\u1eddng c\u01a1 kh\u00ed v\u00e0 x\u00e2y d\u1ef1ng, th\u1ee3 h\u00e0n th\u01b0\u1eddng xuy\u00ean ph\u1ea3i ch\u1ecbu nhi\u1ec1u nguy c\u01a1 ti\u1ec1m \u1ea9n nh\u01b0 tia h\u1ed3 quang, tia UV hay m\u1ea3nh kim lo\u1ea1i b\u1eafn ra. M\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u che k\u00edn v\u00f9ng m\u1eaft v\u00e0 khu\u00f4n m\u1eb7t m\u00e0 v\u1eabn \u0111\u1ec3 r\u1ea3nh c\u1ea3 hai tay. C\u1ea7n n\u00f3i ngay m\u1ed9t gi\u1edbi h\u1ea1n c\u1ee7a n\u00f3: chi\u1ebfc m\u1eb7t n\u1ea1 n\u00e0y ch\u1eb7n b\u1ee9c x\u1ea1 v\u00e0 x\u1ec9 b\u1eafn, nh\u01b0ng kh\u00f4ng l\u1ecdc kh\u00f3i h\u00e0n. Kh\u00f3i h\u00e0n ch\u1ee9a oxit c\u1ee7a kim lo\u1ea1i n\u1ec1n v\u00e0 c\u1ee7a que h\u00e0n, v\u00e0 n\u00f3 \u0111i th\u1eb3ng v\u00e0o ph\u1ed5i qua khe h\u1edf d\u01b0\u1edbi c\u1eb1m, n\u00ean ch\u1ed7 h\u00e0n k\u00edn gi\u00f3 v\u1eabn ph\u1ea3i c\u00f3 h\u00fat kh\u00f3i c\u1ee5c b\u1ed9 ho\u1eb7c kh\u1ea9u trang l\u1ecdc b\u1ee5i h\u00e0n \u0111eo b\u00ean trong.\r\n

Vai Tr\u00f2 C\u1ee7a M\u1eb7t N\u1ea1 H\u00e0n \u0110\u1ed9i \u0110\u1ea7u<\/strong><\/h2>\r\n

T\u00e1c H\u1ea1i C\u1ee7a M\u1ea3nh Kim Lo\u1ea1i, Tia UV<\/strong><\/h3>\r\nTrong m\u00f4i tr\u01b0\u1eddng h\u00e0n, tia h\u1ed3 quang ph\u00e1t ra \u00e1nh s\u00e1ng c\u1ef1c m\u1ea1nh, ch\u1ee9a c\u1ea3 tia UV v\u00e0 tia IR. Khi m\u1eaft ng\u01b0\u1eddi th\u1ee3 kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u<\/a> , tia UV c\u00f3 th\u1ec3 g\u00e2y b\u1ecfng gi\u00e1c m\u1ea1c, c\u00f2n tia IR c\u00f3 th\u1ec3 l\u00e0m t\u1ed5n th\u01b0\u01a1ng v\u00f5ng m\u1ea1c, l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng nh\u00ecn ho\u1eb7c d\u1eabn \u0111\u1ebfn m\u00f9 ho\u00e0n to\u00e0n.\r\n\r\nKh\u00f4ng ch\u1ec9 v\u1eady, c\u00e1c m\u1ea3nh kim lo\u1ea1i li ti, b\u1ee5i h\u00e0n v\u00e0 tia l\u1eeda c\u0169ng c\u00f3 th\u1ec3 bay v\u00e0o m\u1eb7t g\u00e2y b\u1ecfng, tr\u1ea7y x\u01b0\u1edbc ho\u1eb7c nhi\u1ec5m tr\u00f9ng. \u0110\u00e2y l\u00e0 l\u00fd do m\u00e0 m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u tr\u1edf th\u00e0nh v\u1eadt d\u1ee5ng g\u1ea7n nh\u01b0 b\u1eaft bu\u1ed9c v\u1edbi b\u1ea5t k\u1ef3 th\u1ee3 h\u00e0n n\u00e0o, t\u1eeb c\u00e1c c\u00f4ng vi\u1ec7c nh\u1ecf l\u1ebb \u0111\u1ebfn c\u00e1c d\u00e2y chuy\u1ec1n c\u00f4ng nghi\u1ec7p quy m\u00f4 l\u1edbn.\r\n\r\nNgo\u00e0i \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1eaft, da m\u1eb7t v\u00e0 v\u00f9ng c\u1ed5 c\u0169ng r\u1ea5t d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng. Tia UV c\u00f3 th\u1ec3 g\u00e2y b\u1ecfng r\u00e1t, th\u1eadm ch\u00ed nguy c\u01a1 ung th\u01b0 da t\u0103ng cao n\u1ebfu ti\u1ebfp x\u00fac l\u00e2u. Nh\u1eefng t\u1ed5n th\u01b0\u01a1ng n\u00e0y th\u01b0\u1eddng \u00e2m th\u1ea7m, kh\u00f3 nh\u1eadn ra ngay l\u1eadp t\u1ee9c, nh\u01b0ng h\u1eadu qu\u1ea3 l\u1ea1i k\u00e9o d\u00e0i. Ch\u00ednh v\u00ec th\u1ebf, m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t m\u00f3n \u0111\u1ed3 b\u1ea3o h\u1ed9, n\u00f3 c\u00f2n l\u00e0 \u201cl\u00e1 ch\u1eafn\u201d h\u1ed7 tr\u1ee3 c\u00f4ng nh\u00e2n gi\u1eef g\u00ecn s\u1ee9c kh\u1ecfe l\u00e2u d\u00e0i.\r\n\r\n\n
\"M\u1eb7t
M\u1eb7t N\u1ea1 H\u00e0n \u0110\u1ed9i \u0110\u1ea7u Ch\u1ed1ng Tia L\u1eeda \u0110\u01b0\u1ee3c Trang B\u1ecb K\u00ednh L\u1ecdc Ch\u1ea5t L\u01b0\u1ee3ng Cao Gi\u00fap Ng\u0103n Ch\u1eb7n Tia H\u1ed3 Quang V\u00e0 Tia UV G\u00e2y H\u1ea1i Cho M\u1eaft, \u0110\u1ed3ng Th\u1eddi S\u1eed D\u1ee5ng V\u1eadt Li\u1ec7u B\u1ec1n B\u1ec9 Ch\u1ecbu Nhi\u1ec7t T\u1ed1t Mang \u0110\u1ebfn S\u1ef1 An To\u00e0n T\u1ed1i \u01afu Trong M\u00f4i Tr\u01b0\u1eddng H\u00e0n C\u01b0\u1eddng \u0110\u1ed9 Cao.<\/figcaption><\/figure>\n\r\n

L\u00fd Do M\u1eb7t N\u1ea1 H\u00e0n \u0110\u1ed9i \u0110\u1ea7u \u0110\u01b0\u1ee3c \u01afu Ti\u00ean<\/strong><\/h3>\r\nSo v\u1edbi k\u00ednh h\u00e0n ho\u1eb7c c\u00e1c lo\u1ea1i m\u1eb7t n\u1ea1 c\u1ea7m tay truy\u1ec1n th\u1ed1ng, m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf bao ph\u1ee7 to\u00e0n b\u1ed9 v\u00f9ng m\u1eb7t v\u00e0 c\u1ed5, \u0111em l\u1ea1i s\u1ef1 an to\u00e0n t\u1ed1i \u0111a. Ng\u01b0\u1eddi th\u1ee3 c\u00f3 th\u1ec3 r\u1ea3nh tay \u0111\u1ec3 l\u00e0m vi\u1ec7c, t\u1eadp trung v\u00e0o m\u1ed1i h\u00e0n m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i c\u1ea7m n\u1eafm hay lo s\u1ee3 b\u1ecb x\u00ea d\u1ecbch khi \u0111ang thao t\u00e1c.\r\n\r\nM\u1ed9t y\u1ebfu t\u1ed1 kh\u00e1c khi\u1ebfn m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng l\u00e0 tr\u1ea3i nghi\u1ec7m \u0111eo d\u1ec5 ch\u1ecbu su\u1ed1t c\u1ea3 ca. Nh\u1edd c\u00f3 h\u1ec7 th\u1ed1ng d\u00e2y \u0111eo v\u00e0 l\u1edbp \u0111\u1ec7m, tr\u1ecdng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 \u0111\u1ec1u l\u00ean \u0111\u1ea7u, gi\u1ea3m c\u1ea3m gi\u00e1c n\u1eb7ng n\u1ec1 v\u00e0 h\u1ea1n ch\u1ebf g\u00e2y \u0111au m\u1ecfi vai g\u00e1y, v\u00e0 \u0111\u00e2y l\u00e0 y\u1ebfu t\u1ed1 \u0111\u1eb7c bi\u1ec7t c\u1ea7n ch\u00fa \u00fd khi c\u00f4ng vi\u1ec7c h\u00e0n th\u01b0\u1eddng k\u00e9o d\u00e0i nhi\u1ec1u gi\u1edd li\u00ean t\u1ee5c.\r\n\r\nKh\u00f4ng d\u1eebng l\u1ea1i \u1edf vi\u1ec7c b\u1ea3o v\u1ec7, m\u1eb7t n\u1ea1 c\u00f2n t\u0103ng n\u0103ng su\u1ea5t c\u00f4ng vi\u1ec7c. K\u00ednh l\u1ecdc c\u1ee7a m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u cho ph\u00e9p nh\u00ecn r\u00f5 m\u1ed1i h\u00e0n, nh\u1eadn di\u1ec7n ch\u00ednh x\u00e1c v\u1ecb tr\u00ed c\u1ea7n thao t\u00e1c, t\u1eeb \u0111\u00f3 m\u1ed1i h\u00e0n \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n v\u00e0 gi\u1ea3m thi\u1ec3u sai s\u00f3t. \u0110\u00f3 l\u00e0 l\u00fd do lo\u1ea1i m\u1eb7t n\u1ea1 n\u00e0y th\u00e0nh l\u1ef1a ch\u1ecdn quen thu\u1ed9c trong gi\u1edbi th\u1ee3 h\u00e0n chuy\u00ean nghi\u1ec7p c\u0169ng nh\u01b0 \u1edf c\u00e1c doanh nghi\u1ec7p c\u01a1 kh\u00ed.\r\n

C\u1ea5u T\u1ea1o V\u00e0 C\u00f4ng Ngh\u1ec7<\/strong><\/h2>\r\n

Thi\u1ebft K\u1ebf, V\u1eadt Li\u1ec7u V\u00e0 K\u00ednh L\u1ecdc<\/strong><\/h3>\r\nY\u1ebfu t\u1ed1 l\u00e0m n\u00ean gi\u00e1 tr\u1ecb c\u1ee7a m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u ch\u00ednh l\u00e0 c\u1ea5u t\u1ea1o v\u1eefng ch\u1eafc nh\u01b0ng v\u1eabn duy tr\u00ec t\u00ednh linh ho\u1ea1t. Theo th\u00f4ng l\u1ec7, v\u1ecf \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb nh\u1ef1a k\u1ef9 thu\u1eadt ho\u1eb7c s\u1ee3i composite \u2013 nh\u1eefng v\u1eadt li\u1ec7u ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t to\u1ea3 ra t\u1eeb m\u1ed1i h\u00e0n, \u0111\u1ed3ng th\u1eddi ch\u1ed1ng va \u0111\u1eadp v\u00e0 kh\u00f4ng gi\u00f2n nhanh d\u01b0\u1edbi tia c\u1ef1c t\u00edm. Nh\u1edd v\u1eady, m\u1eb7t n\u1ea1 v\u1eeba b\u1ec1n v\u1eeba nh\u1eb9, th\u00edch h\u1ee3p cho m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.\r\n\r\n\u0110i\u1ec3m n\u1ed5i b\u1eadt kh\u00f4ng th\u1ec3 thi\u1ebfu l\u00e0 k\u00ednh l\u1ecdc chuy\u00ean d\u1ee5ng. K\u00ednh l\u1ecdc \u0111\u1ea1t chu\u1ea9n c\u1ea3n g\u1ea7n nh\u01b0 to\u00e0n b\u1ed9 tia UV v\u00e0 IR \u1edf m\u1ecdi m\u1ee9c shade, k\u1ec3 c\u1ea3 khi \u0111ang \u1edf tr\u1ea1ng th\u00e1i s\u00e1ng; c\u00f2n con s\u1ed1 shade quy\u1ebft \u0111\u1ecbnh m\u1ee9c c\u1ea3n \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y, t\u1ee9c ph\u1ea7n ch\u00f3i c\u1ee7a h\u1ed3 quang. \u0110\u00f3 l\u00e0 l\u00fd do ch\u1ecdn sai shade v\u1eabn h\u1ea1i m\u1eaft d\u00f9 k\u00ednh c\u00f3 c\u00f4ng b\u1ed1 ch\u1ed1ng UV. C\u00e1c d\u00f2ng cao c\u1ea5p c\u1ee7a m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u c\u00f2n trang b\u1ecb k\u00ednh l\u1ecdc nhi\u1ec1u l\u1edbp, cho h\u00ecnh \u1ea3nh r\u00f5 n\u00e9t v\u00e0 gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng nh\u1ea5p nh\u00e1y, gi\u00fap th\u1ee3 h\u00e0n quan s\u00e1t ch\u00ednh x\u00e1c m\u1ed1i h\u00e0n m\u00e0 kh\u00f4ng b\u1ecb l\u00f3a m\u1eaft.\r\n

C\u00f4ng Ngh\u1ec7 T\u1ef1 \u0110\u1ed9ng T\u1ed1i S\u00e1ng<\/strong><\/h3>\r\nThi\u1ebft b\u1ecb b\u1ea3o h\u1ed9 n\u00e0y mang c\u00f4ng ngh\u1ec7 \u201cauto-darkening filter\u201d (ADF). \u0110\u00e2y l\u00e0 lo\u1ea1i k\u00ednh t\u1ef1 chuy\u1ec3n sang m\u1ee9c t\u1ed1i khi c\u1ea3m bi\u1ebfn \u1edf m\u1eb7t ngo\u00e0i b\u1eaft \u0111\u01b0\u1ee3c \u00e1nh h\u1ed3 quang. Khi ch\u01b0a h\u00e0n, k\u00ednh \u1edf tr\u1ea1ng th\u00e1i s\u00e1ng \u0111\u1ec3 ng\u01b0\u1eddi d\u00f9ng d\u1ec5 d\u00e0ng c\u0103n ch\u1ec9nh v\u1eadt li\u1ec7u. Khi h\u1ed3 quang xu\u1ea5t hi\u1ec7n, k\u00ednh ngay l\u1eadp t\u1ee9c chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 t\u1ed1i ch\u1ec9 trong v\u00e0i ph\u1ea7n ngh\u00ecn gi\u00e2y, b\u1ea3o v\u1ec7 m\u1eaft kh\u1ecfi \u00e1nh s\u00e1ng ch\u00f3i. C\u01a1 ch\u1ebf n\u00e0y c\u00f3 hai \u0111i\u1ec3m h\u1ecfng c\u1ea7n bi\u1ebft tr\u01b0\u1edbc. Th\u1ee9 nh\u1ea5t, c\u1ea3m bi\u1ebfn n\u1eb1m \u1edf m\u1eb7t ngo\u00e0i k\u00ednh n\u00ean n\u00f3 b\u1ecb m\u00f9 khi c\u00f3 x\u1ec9 b\u00e1m l\u00ean, ho\u1eb7c khi ch\u00ednh ph\u00f4i h\u00e0n che m\u1ea5t t\u1ea7m c\u1ea3m bi\u1ebfn l\u00fac h\u00e0n trong g\u00f3c h\u1eb9p v\u00e0 h\u00e0n ng\u1eeda; k\u00ednh kh\u00f4ng t\u1ed1i th\u00ec m\u1eaft \u0103n tr\u1ecdn nh\u00e1t h\u1ed3 quang \u0111\u1ea7u ti\u00ean. Th\u1ee9 hai, k\u00ednh ch\u1ea1y b\u1eb1ng pin c\u00f3 pin m\u1eb7t tr\u1eddi h\u1ed7 tr\u1ee3, v\u00e0 pin y\u1ebfu th\u00ec th\u1eddi gian chuy\u1ec3n t\u1ed1i k\u00e9o d\u00e0i ra. Tr\u01b0\u1edbc m\u1ed7i ca n\u00ean b\u1ea5m n\u00fat test c\u00f3 s\u1eb5n tr\u00ean m\u1eb7t n\u1ea1; m\u1eabu kh\u00f4ng c\u00f3 n\u00fat test th\u00ec m\u1ed3i m\u1ed9t nh\u00e1t h\u1ed3 quang ng\u1eafn \u1edf t\u01b0 th\u1ebf \u0111\u00e3 quay m\u1eb7t tr\u00e1nh \u0111i \u0111\u1ec3 xem k\u00ednh c\u00f3 t\u1ed1i k\u1ecbp kh\u00f4ng.\r\n\r\nNh\u1edd c\u00f4ng ngh\u1ec7 n\u00e0y, th\u1ee3 h\u00e0n kh\u00f4ng ph\u1ea3i g\u1eadt \u0111\u1ea7u h\u1ea5t m\u1eb7t n\u1ea1 xu\u1ed1ng tr\u01b0\u1edbc m\u1ed7i l\u1ea7n m\u1ed3i que nh\u01b0 khi d\u00f9ng lo\u1ea1i k\u00ednh c\u1ed1 \u0111\u1ecbnh. Ng\u01b0\u1eddi th\u1ee3 kh\u00f4ng c\u1ea7n ph\u1ea3i li\u00ean t\u1ee5c n\u00e2ng l\u00ean, h\u1ea1 xu\u1ed1ng m\u1eb7t n\u1ea1 \u0111\u1ec3 quan s\u00e1t, t\u1eeb \u0111\u00f3 ti\u1ebft ki\u1ec7m th\u1eddi gian, t\u0103ng \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 gi\u1ea3m m\u1ec7t m\u1ecfi trong qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c. \u0110\u00e2y c\u0169ng l\u00e0 nguy\u00ean nh\u00e2n khi\u1ebfn c\u00e1c x\u01b0\u1edfng c\u01a1 kh\u00ed hi\u1ec7n \u0111\u1ea1i h\u1ea7u nh\u01b0 \u0111\u1ec1u trang b\u1ecb lo\u1ea1i m\u1eb7t n\u1ea1 n\u00e0y cho th\u1ee3 h\u00e0n.\r\n\r\n\n
\"M\u1eb7t
M\u1eb7t N\u1ea1 H\u00e0n \u0110\u1ed9i \u0110\u1ea7u An To\u00e0n \u0110\u01b0\u1ee3c L\u00e0m T\u1eeb V\u1eadt Li\u1ec7u B\u1ec1n Ch\u1eafc, T\u00edch H\u1ee3p K\u00ednh L\u1ecdc Hi\u1ec7n \u0110\u1ea1i V\u00e0 H\u1ec7 Th\u1ed1ng D\u00e2y \u0110eo \u00d4m Kh\u00edt, Gi\u00fap B\u1ea3o V\u1ec7 M\u1eaft, Da C\u0169ng Nh\u01b0 Khu\u00f4n M\u1eb7t Kh\u1ecfi Tia H\u1ed3 Quang, Tia UV V\u00e0 C\u00e1c M\u1ea3nh Kim Lo\u1ea1i Trong Qu\u00e1 Tr\u00ecnh H\u00e0n.<\/figcaption><\/figure>\n\r\n

H\u1ec7 Th\u1ed1ng D\u00e2y \u0110eo V\u00e0 \u0110\u1ec7m \u0110\u1ea7u<\/strong><\/h3>\r\nM\u1ed9t y\u1ebfu t\u1ed1 th\u01b0\u1eddng \u00edt \u0111\u01b0\u1ee3c ch\u00fa \u00fd nh\u01b0ng v\u00f4 c\u00f9ng quan tr\u1ecdng ch\u00ednh l\u00e0 h\u1ec7 th\u1ed1ng d\u00e2y \u0111eo. V\u1edbi m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u, d\u00e2y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u00f4m v\u1eeba v\u1eb7n. L\u1edbp \u0111\u1ec7m l\u00f3t m\u1ec1m m\u1ea1i \u1edf ph\u1ea7n ti\u1ebfp x\u00fac v\u1edbi tr\u00e1n v\u00e0 sau \u0111\u1ea7u gi\u00fap gi\u1ea3m \u00e1p l\u1ef1c, nh\u1edd \u0111\u00f3 ng\u01b0\u1eddi th\u1ee3 c\u00f3 th\u1ec3 \u0111eo h\u00e0ng gi\u1edd li\u1ec1n m\u00e0 kh\u00f4ng b\u1ecb kh\u00f3 ch\u1ecbu.\r\n\r\nNgo\u00e0i ra, s\u1ef1 ph\u00e2n b\u1ed5 tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ed3ng \u0111\u1ec1u c\u0169ng h\u1ea1n ch\u1ebf t\u00ecnh tr\u1ea1ng \u0111au m\u1ecfi c\u1ed5, \u0111\u1eb7c bi\u1ec7t khi l\u00e0m vi\u1ec7c \u1edf t\u01b0 th\u1ebf kh\u00f3 nh\u01b0 h\u00e0n tr\u00ean cao ho\u1eb7c h\u00e0n \u1edf nh\u1eefng v\u1ecb tr\u00ed h\u1eb9p. \u0110\u00e2y ch\u00ednh l\u00e0 \u0111i\u1ec3m c\u1ed9ng l\u1edbn m\u00e0 nhi\u1ec1u ng\u01b0\u1eddi sau khi tr\u1ea3i nghi\u1ec7m m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u \u0111\u1ec1u \u0111\u00e1nh gi\u00e1 cao.\r\nCon s\u1ed1 “Shade” tr\u00ean k\u00ednh l\u1ecdc l\u00e0 m\u1ee9c c\u1ea3n s\u00e1ng v\u00e0 n\u00f3 ph\u1ea3i kh\u1edbp v\u1edbi d\u00f2ng h\u00e0n, kh\u00f4ng th\u1ec3 ch\u1ecdn theo c\u1ea3m gi\u00e1c. B\u1ea3ng tra trong quy \u0111\u1ecbnh c\u1ee7a OSHA v\u1ec1 b\u1ea3o v\u1ec7 m\u1eaft v\u00e0 m\u1eb7t<\/a> ghi r\u00f5: h\u00e0n h\u1ed3 quang que b\u1ecdc thu\u1ed1c d\u01b0\u1edbi 60 A c\u1ea7n t\u1ed1i thi\u1ec3u shade 7, d\u1ea3i 60\u2013160 A c\u1ea7n shade 8, c\u00f2n 160\u2013250 A ph\u1ea3i l\u00ean shade 10. \u1ede ch\u00e2u \u00c2u, ph\u1ea7n v\u1ecf m\u1eb7t n\u1ea1 h\u00e0n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 theo EN 175 c\u00f2n k\u00ednh l\u1ecdc t\u1ef1 \u0111\u1ed9ng t\u1ed1i theo EN 379, n\u00ean hai s\u1ed1 hi\u1ec7u n\u00e0y th\u01b0\u1eddng in \u1edf hai v\u1ecb tr\u00ed kh\u00e1c nhau tr\u00ean c\u00f9ng m\u1ed9t s\u1ea3n ph\u1ea9m. V\u1edbi x\u01b0\u1edfng ch\u1ea1y nhi\u1ec1u lo\u1ea1i m\u00e1y trong m\u1ed9t ca, m\u1eb7t n\u1ea1 ADF \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c d\u1ea3i shade l\u00e0 l\u1ef1a ch\u1ecdn h\u1ee3p l\u00fd h\u01a1n k\u00ednh c\u1ed1 \u0111\u1ecbnh m\u1ed9t m\u1ee9c.\n\n

C\u00e1c Th\u00f4ng S\u1ed1 K\u1ef9 Thu\u1eadt<\/strong><\/h3>\r\nB\u1ed1n th\u00f4ng s\u1ed1 c\u1ea7n \u0111\u1ecdc tr\u00ean tem tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh mua l\u00e0 d\u1ea3i \u0111\u1ed9 t\u1ed1i c\u1ee7a k\u00ednh l\u1ecdc (Shade), t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng khi chuy\u1ec3n s\u00e1ng \u2013 t\u1ed1i, k\u00edch th\u01b0\u1edbc v\u00f9ng quan s\u00e1t v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng tia UV\/IR. V\u1edbi c\u00e1c c\u00f4ng vi\u1ec7c h\u00e0n MIG, TIG hay h\u00e0n \u0111i\u1ec7n h\u1ed3 quang, m\u1ed7i lo\u1ea1i y\u00eau c\u1ea7u \u0111\u1ed9 t\u1ed1i kh\u00e1c nhau, do \u0111\u00f3 m\u1eb7t n\u1ea1 c\u00f3 kh\u1ea3 n\u0103ng \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec1u c\u1ea5p \u0111\u1ed9 lu\u00f4n \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n.\r\n\r\nNgo\u00e0i ra, ngu\u1ed3n c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho k\u00ednh t\u1ef1 \u0111\u1ed9ng c\u0169ng r\u1ea5t quan tr\u1ecdng. M\u1ed9t s\u1ed1 lo\u1ea1i d\u00f9ng pin lithium h\u1ed7 tr\u1ee3 ho\u1ea1t \u0111\u1ed9ng c\u00f9ng pin m\u1eb7t tr\u1eddi, gi\u00fap m\u1eb7t n\u1ea1 h\u00e0n \u0111\u1ed9i \u0111\u1ea7u v\u1eeba an to\u00e0n v\u1eeba th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi s\u1eed d\u1ee5ng.\r\n

\u01afu \u0110i\u1ec3m V\u00e0 \u1ee8ng D\u1ee5ng<\/strong><\/h2>\r\n