{"id":2526,"date":"2026-01-11T17:23:47","date_gmt":"2026-01-11T10:23:47","guid":{"rendered":"https:\/\/quangoptic.vn\/?p=2526"},"modified":"2026-01-11T17:23:47","modified_gmt":"2026-01-11T10:23:47","slug":"kinh-ram-bao-ve-mat","status":"publish","type":"post","link":"https:\/\/quangoptic.vn\/en\/tin-tuc\/kinh-ram-bao-ve-mat\/","title":{"rendered":"K\u00ednh r\u00e2m b\u1ea3o v\u1ec7 m\u1eaft: ch\u1ecdn UV400 hay ph\u00e2n c\u1ef1c?"},"content":{"rendered":"

K\u00ednh r\u00e2m b\u1ea3o v\u1ec7 m\u1eaft<\/b> t\u1ed1t kh\u00f4ng ch\u1ec9 n\u1eb1m \u1edf m\u00e0u tr\u00f2ng \u0111\u1eadm hay nh\u1ea1t, m\u00e0 \u1edf kh\u1ea3 n\u0103ng ch\u1eb7n tia UV v\u00e0 gi\u1ea3m ch\u00f3i \u0111\u00fang nhu c\u1ea7u. Nhi\u1ec1u ng\u01b0\u1eddi ph\u00e2n v\u00e2n gi\u1eefa UV400 v\u00e0 tr\u00f2ng ph\u00e2n c\u1ef1c v\u00ec nghe \u0111\u1ec1u \u201cb\u1ea3o v\u1ec7 m\u1eaft\u201d, nh\u01b0ng hai kh\u00e1i ni\u1ec7m n\u00e0y kh\u00e1c nhau. B\u00e0i vi\u1ebft n\u00e0y gi\u00fap b\u1ea1n hi\u1ec3u UV400 l\u00e0 n\u1ec1n t\u1ea3ng b\u1eaft bu\u1ed9c, ph\u00e2n c\u1ef1c l\u00e0 t\u00ednh n\u0103ng b\u1ed5 sung cho m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng, t\u1eeb \u0111\u00f3 ch\u1ecdn \u0111\u00fang v\u00e0 tr\u00e1nh mua nh\u1ea7m.<\/span><\/p>\n

UV400 v\u00e0 ph\u00e2n c\u1ef1c kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/h2>\n

Hi\u1ec3u \u0111\u01a1n gi\u1ea3n, UV400 li\u00ean quan t\u1edbi b\u1ea3o v\u1ec7 kh\u1ecfi tia c\u1ef1c t\u00edm, c\u00f2n ph\u00e2n c\u1ef1c li\u00ean quan t\u1edbi gi\u1ea3m ch\u00f3i ph\u1ea3n x\u1ea1.<\/span><\/p>\n

\"T\u00ecm
T\u00ecm hi\u1ec3u k\u00ednh r\u00e2m UV400<\/figcaption><\/figure>\n

UV400 l\u00e0 g\u00ec v\u00e0 v\u00ec sao n\u00ean \u01b0u ti\u00ean tr\u01b0\u1edbc?<\/b><\/h3>\n

UV400 ngh\u0129a l\u00e0 tr\u00f2ng k\u00ednh c\u00f3 kh\u1ea3 n\u0103ng ch\u1eb7n tia UV \u0111\u1ebfn b\u01b0\u1edbc s\u00f3ng 400nm, bao g\u1ed3m UVA v\u00e0 UVB. \u0110\u00e2y l\u00e0 ph\u1ea7n quan tr\u1ecdng nh\u1ea5t c\u1ee7a \u201cb\u1ea3o v\u1ec7 m\u1eaft\u201d khi ra n\u1eafng, v\u00ec tia UV t\u00e1c \u0111\u1ed9ng l\u00e2u d\u00e0i c\u00f3 th\u1ec3 g\u00e2y kh\u00f3 ch\u1ecbu, m\u1ecfi m\u1eaft v\u00e0 t\u0103ng nguy c\u01a1 t\u1ed5n th\u01b0\u01a1ng theo th\u1eddi gian.<\/span><\/p>\n

M\u1eb9o: \u0111\u1eebng \u0111\u00e1nh gi\u00e1 k\u00ednh r\u00e2m b\u1eb1ng \u0111\u1ed9 \u0111\u1eadm. Tr\u00f2ng r\u1ea5t \u0111\u1eadm nh\u01b0ng kh\u00f4ng c\u00f3 ch\u1ed1ng UV v\u1eabn khi\u1ebfn m\u1eaft nguy hi\u1ec3m h\u01a1n v\u00ec \u0111\u1ed3ng t\u1eed gi\u00e3n ra khi t\u1ed1i, UV l\u1ea1i l\u1ecdt v\u00e0o nhi\u1ec1u h\u01a1n.<\/span><\/p>\n

Tr\u00f2ng ph\u00e2n c\u1ef1c l\u00e0 g\u00ec?<\/b><\/h3>\n

Tr\u00f2ng ph\u00e2n c\u1ef1c (polarized) c\u00f3 l\u1edbp l\u1ecdc gi\u00fap gi\u1ea3m ch\u00f3i do \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 t\u1eeb m\u1eb7t ph\u1eb3ng nh\u01b0 m\u1eb7t n\u01b0\u1edbc, k\u00ednh xe, \u0111\u01b0\u1eddng nh\u1ef1a, n\u1ec1n xi m\u0103ng. Nh\u1edd gi\u1ea3m ch\u00f3i, m\u1eaft b\u1edbt nheo, nh\u00ecn \u201cd\u1ec5\u201d h\u01a1n khi l\u00e1i xe ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng ngo\u00e0i tr\u1eddi.<\/span><\/p>\n

\"Tr\u00f2ng
Tr\u00f2ng ph\u00e2n c\u1ef1c gi\u1ea3m ch\u00f3i<\/figcaption><\/figure>\n

\u0110i\u1ec3m c\u1ea7n nh\u1edb l\u00e0 tr\u00f2ng ph\u00e2n c\u1ef1c kh\u00f4ng t\u1ef1 \u0111\u1ed9ng \u0111\u1ed3ng ngh\u0129a v\u1edbi UV400. M\u1ed9t chi\u1ebfc k\u00ednh t\u1ed1t th\u01b0\u1eddng l\u00e0 UV400 v\u00e0 c\u00f3 th\u1ec3 th\u00eam ph\u00e2n c\u1ef1c t\u00f9y nhu c\u1ea7u.<\/span><\/p>\n

Khi n\u00e0o n\u00ean ch\u1ecdn UV400, khi n\u00e0o n\u00ean ch\u1ecdn ph\u00e2n c\u1ef1c?<\/b><\/h2>\n

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch ch\u1ecdn theo t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf, ph\u00f9 h\u1ee3p search intent \u201cmua \u0111\u00fang, d\u00f9ng \u0111\u00fang\u201d.<\/span><\/p>\n

Ch\u1ec9 c\u1ea7n UV400 n\u1ebfu b\u1ea1n d\u00f9ng k\u00ednh r\u00e2m h\u1eb1ng ng\u00e0y, \u00edt ch\u00f3i<\/b><\/h3>\n

N\u1ebfu b\u1ea1n ch\u1ee7 y\u1ebfu \u0111i b\u1ed9, \u0111i xe m\u00e1y trong ph\u1ed1, thi tho\u1ea3ng ra n\u1eafng v\u00e0 kh\u00f4ng th\u01b0\u1eddng xuy\u00ean g\u1eb7p ch\u00f3i m\u1ea1nh, \u01b0u ti\u00ean \u0111\u1ea7u ti\u00ean l\u00e0 ch\u1ecdn k\u00ednh c\u00f3 UV400. Khi \u0111\u00e3 c\u00f3 UV400, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn th\u00eam ti\u00eau ch\u00ed v\u1ec1 m\u00e0u tr\u00f2ng, \u0111\u1ed9 v\u1eeba g\u1ecdng, v\u00e0 \u0111\u1ed9 tho\u1ea3i m\u00e1i khi \u0111eo.<\/span><\/p>\n

M\u1eb9o: n\u1ebfu b\u1ea1n hay d\u00f9ng \u0111i\u1ec7n tho\u1ea1i ngo\u00e0i tr\u1eddi, ch\u1ecdn tr\u00f2ng kh\u00f4ng qu\u00e1 \u0111\u1eadm \u0111\u1ec3 v\u1eabn nh\u00ecn m\u00e0n h\u00ecnh d\u1ec5, nh\u01b0ng v\u1eabn ph\u1ea3i c\u00f3 UV400.<\/span><\/p>\n

\"Tr\u00f2ng
Tr\u00f2ng k\u00ednh UV400 ngo\u00e0i tr\u1eddi<\/figcaption><\/figure>\n

N\u00ean ch\u1ecdn ph\u00e2n c\u1ef1c n\u1ebfu b\u1ea1n th\u01b0\u1eddng xuy\u00ean b\u1ecb ch\u00f3i<\/b><\/h3>\n

B\u1ea1n s\u1ebd th\u1ea5y ph\u00e2n c\u1ef1c \u0111\u00e1ng ti\u1ec1n h\u01a1n khi:<\/span><\/p>\n