Ch\u1ec9 s\u1ed1 \u0111\u1ed9 trung th\u1ef1c (Rf) c\u1ee7a TM-30 s\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a 99 m\u1eabu m\u00e0u; trong khi CRI ch\u1ec9 s\u1eed d\u1ee5ng 8 m\u00e0u \u0111\u1ec3 t\u1ea1o ra gi\u00e1 tr\u1ecb Ra – t\u1ea1i sao \u0111i\u1ec1u n\u00e0y l\u1ea1i quan tr\u1ecdng? B\u1edfi v\u00ec khi c\u00f3 nhi\u1ec1u h\u01a1n 8 m\u00e0u trong quang ph\u1ed5 kh\u1ea3 ki\u1ebfn, vi\u1ec7c s\u1eed d\u1ee5ng b\u1ed9 m\u1eabu h\u1ea1n ch\u1ebf nh\u01b0 v\u1eady \u0111\u1ec3 th\u1eed v\u00e0 m\u00f4 t\u1ea3 hi\u1ec7u su\u1ea5t \u0111\u1ed9 hi\u1ec3n th\u1ecb m\u00e0u s\u1eafc c\u00f3 ngh\u0129a l\u00e0 vi\u1ec7c t\u00e1i t\u1ea1o h\u00ecnh \u1ea3nh tr\u1ef1c quan c\u1ee7a v\u1eadt th\u1ec3 c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 d\u01b0\u1edbi ngu\u1ed3n nh\u00e2n t\u1ea1o so v\u1edbi \u00e1nh s\u00e1ng ban ng\u00e0y t\u1ef1 nhi\u00ean. Gi\u00e1 tr\u1ecb Rf 100 c\u00f3 ngh\u0129a l\u00e0 c\u00e1c ngu\u1ed3n th\u1eed nghi\u1ec7m hi\u1ec3n th\u1ecb c\u00e1c m\u1eabu m\u00e0u theo c\u00e1ch gi\u1ed1ng h\u1ec7t nh\u01b0 ngu\u1ed3n tham chi\u1ebfu v\u00e0 do \u0111\u00f3 r\u1ea5t g\u1ea7n v\u1edbi \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean ban ng\u00e0y.<\/em><\/p>\n CRI ch\u1ec9 s\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a 8 m\u00e0u (R1-R8) \u0111\u1ec3 t\u1ea1o ra Ra<\/p>\n TM-30-15 s\u1eeda d\u1ee5ng gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a 99 m\u1eabu m\u00e0u s\u1eafc \u0111\u1ec3 t\u1ea1o ra Rf ( ch\u1ec9 s\u1ed1 trung th\u1ef1c). Gi\u00e1 tr\u1ecb Rf 100 ngh\u0129a l\u00e0 \u00e1nh s\u00e1ng hi\u1ec3n th\u1ecb c\u00e1c m\u1eabu m\u00e0u gi\u1ed1ng v\u1edbi \u00e1nh s\u00e1ng t\u1ef1 nhi\u00ean.<\/p>\n Ch\u1ec9 s\u1ed1 Gamut (Rg), th\u1ec3 hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 b\u00e3o h\u00f2a trung b\u00ecnh c\u1ee7a ngu\u1ed3n so v\u1edbi \u0111\u00e8n chi\u1ebfu s\u00e1ng tham chi\u1ebfu. C\u00e1c gi\u00e1 tr\u1ecb l\u1edbn h\u01a1n 100 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem nh\u01b0 l\u00e0 s\u1ef1 gia t\u0103ng \u0111\u1ed9 b\u00e3o h\u00f2a trung b\u00ecnh, trong khi c\u00e1c gi\u00e1 tr\u1ecb nh\u1ecf h\u01a1n 100 th\u1ec3 hi\u1ec7n s\u1ef1 gi\u1ea3m xu\u1ed1ng.<\/em><\/p>\n Ngo\u00e0i hai ch\u1ec9 s\u1ed1 tr\u00ean, \u0110\u1ed3 h\u1ecda Vect\u01a1 M\u00e0u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m n\u1ed5i b\u1eadt c\u00e1c thay \u0111\u1ed5i v\u1ec1 gam m\u00e0u m\u1ed9t c\u00e1ch tr\u1ef1c quan. \u0110\u00e8n chi\u1ebfu s\u00e1ng tham chi\u1ebfu \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb b\u1eb1ng v\u00f2ng tr\u00f2n m\u00e0u \u0111en; \u0111\u1ed9 l\u1ec7ch b\u00ean ngo\u00e0i v\u00f9ng n\u00e0y cho th\u1ea5y s\u1ef1 gia t\u0103ng \u0111\u1ed9 b\u00e3o h\u00f2a c\u1ee7a m\u00e0u \u0111\u01b0\u1ee3c ch\u1ecdn, trong khi s\u1ef1 thay \u0111\u1ed5i b\u00ean trong, cho th\u1ea5y \u0111\u1ed9 b\u00e3o h\u00f2a gi\u1ea3m \u0111i. C\u00e1c m\u0169i t\u00ean \u0111i k\u00e8m gi\u1eefa tham chi\u1ebfu v\u00e0 ngu\u1ed3n m\u00f4 t\u1ea3 s\u1ef1 d\u1ecbch chuy\u1ec3n c\u1ee7a vector gamut.<\/em><\/p>\n B\u1ea3n th\u00e2n \u0111\u1ed9 trung th\u1ef1c (ch\u1ec9 s\u1ed1 m\u00e0 CIE CRI ch\u1ec9 xem x\u00e9t) kh\u00f4ng ph\u1ea3i l\u00e0 th\u01b0\u1edbc \u0111o ho\u00e0n ch\u1ec9nh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh th\u1ef1c s\u1ef1 ngu\u1ed3n s\u00e1ng. C\u00f3 th\u1ec3 2 ngu\u1ed3n s\u00e1ng c\u00f3 c\u00f9ng gi\u00e1 tr\u1ecb Ra nh\u01b0ng c\u1ea3m nh\u1eadn th\u1ecb gi\u00e1c c\u00f3 th\u1ec3 ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/em><\/p>\n \u0110\u01a1n gi\u00e0n, khi ch\u1ec9 c\u1ea7n ch\u1ec9 \u0111\u1ecbnh \u0111\u00e8n LED CRI cao c\u00f3 th\u1ec3 kh\u00f4ng mang l\u1ea1i cho b\u1ea1n hi\u1ec7u qu\u1ea3 mong mu\u1ed1n. Trong khi TM-30 cung c\u1ea5p th\u00eam th\u00f4ng tin chi ti\u1ebft h\u01a1n th\u00ec vi\u1ec7c thi\u1ebft k\u1ebf tr\u1edf n\u00ean d\u1ec5 d\u00e0ng v\u00e0 d\u1ec5 ki\u1ec3m so\u00e1t h\u01a1n nhi\u1ec1u.<\/em><\/p>\n TM-30 \u0111\u1ecbnh l\u01b0\u1ee3ng \u0111\u1ed9 trung th\u1ef1c c\u1ee7a m\u00e0u s\u1eafc tr\u00ean 99 m\u1eabu m\u00e0u (CIE ch\u1ec9 s\u1eed d\u1ee5ng 8), gi\u00e1 tr\u1ecb c\u00e0ng cao (0-100) th\u00ec m\u00e0u s\u1eafc s\u1ebd hi\u1ec3n th\u1ecb ch\u00ednh x\u00e1c h\u01a1n so v\u1edbi \u0111\u00e8n chi\u1ebfu s\u00e1ng tham chi\u1ebfu. Sau \u0111\u00f3 l\u00e0 ch\u1ec9 s\u1ed1 Gamut (Rf). 2 ngu\u1ed3n s\u00e1ng c\u00f3 c\u00f9ng gi\u00e1 tr\u1ecb Rf c\u00f3 th\u1ec3 kh\u00e1c nhau gi\u1ed1ng nh\u01b0 ngu\u1ed3n s\u00e1ng c\u00f3 c\u00f9ng gi\u00e1 tr\u1ecb Ra. M\u1ed9t ngu\u1ed3n c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng m\u00e0u \u0111\u1ecf trong khi ngu\u1ed3n kh\u00e1c s\u1ebd t\u1eaft \u2013 v\u00ec v\u1eady s\u1ebd c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t. Vi\u1ec7c b\u1ed5 sung ch\u1ec9 s\u1ed1 gamut s\u1ebd d\u1ef1 \u0111o\u00e1n ch\u00ednh x\u00e1c h\u01a1n v\u1ec1 vi\u1ec7c d\u1ef1 \u0111o\u00e1n v\u1eadt th\u1ec3 v\u00e0 kh\u00f4ng gian \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng s\u1ebd tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o b\u1eb1ng c\u00e1ch \u0111o s\u1ef1 thay \u0111\u1ed5i trung b\u00ecnh v\u1ec1 \u0111\u1ed9 b\u00e3o h\u00f2a v\u00e0 hue. Thi\u1ebft k\u1ebf \u00e1nh s\u00e1ng l\u00e0 t\u1ea1o n\u00ean kh\u00f4ng gian v\u00ec v\u1eady n\u00f3 s\u1ebd tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n n\u1ebfu b\u1ea1n c\u00f3 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t v\u00e0 hi\u1ec3u h\u01a1n v\u1ec1 ph\u01b0\u01a1ng th\u1ee9c n\u00e0y.<\/em><\/p>\n<\/div>\n
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T\u1ea1i sao l\u1ea1i l\u00e0 TM-30-15?<\/strong><\/h2>\n