{"id":2668,"date":"2026-01-13T12:02:56","date_gmt":"2026-01-13T05:02:56","guid":{"rendered":"https:\/\/quangoptic.vn\/?p=2668"},"modified":"2026-01-13T12:02:56","modified_gmt":"2026-01-13T05:02:56","slug":"chong-choi-la-gi","status":"publish","type":"post","link":"https:\/\/quangoptic.vn\/en\/tin-tuc\/chong-choi-la-gi\/","title":{"rendered":"Ch\u1ed1ng ch\u00f3i l\u00e0 g\u00ec? Ph\u00f9 h\u1ee3p ai, d\u00f9ng khi n\u00e0o h\u1ee3p l\u00fd"},"content":{"rendered":"

Ch\u1ed1ng ch\u00f3i l\u00e0 g\u00ec<\/b> v\u00e0 v\u00ec sao c\u00f3 ng\u01b0\u1eddi \u0111eo k\u00ednh \u201cnh\u1eb9 m\u1eaft\u201d h\u1eb3n, nh\u01b0ng c\u00f3 ng\u01b0\u1eddi l\u1ea1i th\u1ea5y kh\u00f4ng kh\u00e1c nhi\u1ec1u? H\u00e3y \u0111\u1ec3 Quang Optic gi\u00fap b\u1ea1n hi\u1ec3u \u0111\u01a1n gi\u1ea3n: ch\u1ed1ng ch\u00f3i l\u00e0 nh\u00f3m gi\u1ea3i ph\u00e1p gi\u00fap gi\u1ea3m l\u00f3a, gi\u1ea3m ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng g\u00e2y kh\u00f3 ch\u1ecbu cho m\u1eaft, t\u1eeb \u0111\u00f3 nh\u00ecn r\u00f5 h\u01a1n v\u00e0 \u0111\u1ee1 m\u1ecfi h\u01a1n trong c\u00e1c t\u00ecnh hu\u1ed1ng nh\u1ea5t \u0111\u1ecbnh. Ch\u1ed1ng ch\u00f3i kh\u00f4ng ch\u1ec9 c\u00f3 m\u1ed9t lo\u1ea1i, v\u00e0 ch\u1ecdn \u0111\u00fang lo\u1ea1i m\u1edbi th\u1eadt s\u1ef1 hi\u1ec7u qu\u1ea3.<\/span><\/p>\n

Ch\u1ed1ng ch\u00f3i l\u00e0 g\u00ec v\u00e0 c\u00f3 nh\u1eefng ki\u1ec3u ch\u1ed1ng ch\u00f3i n\u00e0o?<\/b><\/h2>\n

Ch\u00f3i l\u00e0 c\u1ea3m gi\u00e1c l\u00f3a ho\u1eb7c kh\u00f3 ch\u1ecbu khi \u00e1nh s\u00e1ng m\u1ea1nh chi\u1ebfu tr\u1ef1c ti\u1ebfp v\u00e0o m\u1eaft ho\u1eb7c ph\u1ea3n x\u1ea1 t\u1eeb b\u1ec1 m\u1eb7t s\u00e1ng nh\u01b0 \u0111\u00e8n tr\u1ea7n, m\u00e0n h\u00ecnh, m\u1eb7t \u0111\u01b0\u1eddng, m\u1eb7t n\u01b0\u1edbc. Ch\u1ed1ng ch\u00f3i l\u00e0 c\u00e1ch x\u1eed l\u00fd \u0111\u1ec3 gi\u1ea3m ph\u1ea7n \u00e1nh s\u00e1ng g\u00e2y l\u00f3a \u0111\u00f3.<\/span><\/p>\n

\"T\u00ecm
T\u00ecm hi\u1ec3u v\u1ec1 k\u00ednh ch\u1ed1ng ch\u00f3i<\/figcaption><\/figure>\n

Th\u1ef1c t\u1ebf c\u00f3 hai nh\u00f3m ch\u1ed1ng ch\u00f3i ph\u1ed5 bi\u1ebfn, d\u1ec5 g\u1eb7p nh\u1ea5t khi ch\u1ecdn k\u00ednh:<\/span><\/p>\n

Ch\u1ed1ng ch\u00f3i b\u1eb1ng l\u1edbp ph\u1ee7 ch\u1ed1ng ph\u1ea3n quang (AR)<\/b><\/h3>\n

L\u1edbp ph\u1ee7 ch\u1ed1ng ph\u1ea3n quang gi\u00fap gi\u1ea3m \u00e1nh ph\u1ea3n x\u1ea1 tr\u00ean b\u1ec1 m\u1eb7t tr\u00f2ng. B\u1ea1n th\u01b0\u1eddng th\u1ea5y hi\u1ec7u qu\u1ea3 r\u00f5 trong m\u00f4i tr\u01b0\u1eddng v\u0103n ph\u00f2ng c\u00f3 \u0111\u00e8n LED, khi nh\u00ecn m\u00e0n h\u00ecnh m\u00e1y t\u00ednh, ho\u1eb7c khi ch\u1ee5p \u1ea3nh, giao ti\u1ebfp v\u00ec tr\u00f2ng b\u1edbt ph\u1ea3n s\u00e1ng.<\/span><\/p>\n

M\u1eb9o: n\u1ebfu b\u1ea1n hay th\u1ea5y \u0111\u00e8n tr\u1ea7n \u201ch\u1eaft\u201d v\u00e0o m\u1eaft ho\u1eb7c th\u1ea5y b\u00f3ng ph\u1ea3n chi\u1ebfu tr\u00ean tr\u00f2ng khi nh\u00ecn m\u00e0n h\u00ecnh, ch\u1ed1ng ph\u1ea3n quang th\u01b0\u1eddng l\u00e0 \u01b0u ti\u00ean \u0111\u1ea7u ti\u00ean.<\/span><\/p>\n

Ch\u1ed1ng ch\u00f3i b\u1eb1ng tr\u00f2ng ph\u00e2n c\u1ef1c (polarized) tr\u00ean k\u00ednh r\u00e2m<\/b><\/h3>\n

Tr\u00f2ng ph\u00e2n c\u1ef1c x\u1eed l\u00fd ch\u00f3i do ph\u1ea3n x\u1ea1 m\u1ea1nh t\u1eeb m\u1eb7t ph\u1eb3ng nh\u01b0 m\u1eb7t \u0111\u01b0\u1eddng nh\u1ef1a, k\u00ednh xe, m\u1eb7t n\u01b0\u1edbc. \u0110\u00e2y l\u00e0 ki\u1ec3u ch\u1ed1ng ch\u00f3i r\u1ea5t h\u1ee3p khi \u0111i ngo\u00e0i tr\u1eddi, l\u00e1i xe ban ng\u00e0y ho\u1eb7c \u0111i bi\u1ec3n.<\/span><\/p>\n

\"D\u00f9ng
D\u00f9ng tr\u00f2ng ph\u00e2n c\u1ef1c ch\u1ed1ng ch\u00f3i<\/figcaption><\/figure>\n

M\u1eb9o: ph\u00e2n c\u1ef1c kh\u00f4ng thay th\u1ebf ch\u1ed1ng UV. N\u1ebfu d\u00f9ng k\u00ednh r\u00e2m, b\u1ea1n v\u1eabn c\u1ea7n tr\u00f2ng c\u00f3 ch\u1ed1ng UV r\u00f5 r\u00e0ng, c\u00f2n ph\u00e2n c\u1ef1c l\u00e0 ph\u1ea7n t\u0103ng tr\u1ea3i nghi\u1ec7m gi\u1ea3m l\u00f3a.<\/span><\/p>\n

Ph\u00f9 h\u1ee3p ai? Nh\u1eefng nh\u00f3m n\u00ean d\u00f9ng ch\u1ed1ng ch\u00f3i<\/b><\/h2>\n

Ch\u1ed1ng ch\u00f3i ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi ng\u01b0\u1eddi th\u01b0\u1eddng xuy\u00ean g\u1eb7p c\u00e1c ngu\u1ed3n l\u00f3a l\u1eb7p l\u1ea1i trong ng\u00e0y ho\u1eb7c d\u1ec5 m\u1ecfi m\u1eaft. B\u1ea1n n\u00ean c\u00e2n nh\u1eafc n\u1ebfu thu\u1ed9c nh\u00f3m sau:<\/span><\/p>\n