{"id":9194,"date":"2023-08-16T16:16:27","date_gmt":"2023-08-16T16:16:27","guid":{"rendered":"http:\/\/dialtous.com\/?p=9194"},"modified":"2023-08-16T16:16:27","modified_gmt":"2023-08-16T16:16:27","slug":"ky-thuat-chieu-sang-la-gi","status":"publish","type":"post","link":"https:\/\/dialtous.com\/ky-thuat-chieu-sang-la-gi\/","title":{"rendered":"Thu\u1eadt ng\u1eef chi\u1ebfu s\u00e1ng c\u01a1 b\u1ea3n"},"content":{"rendered":"

Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p chi\u1ebfu s\u00e1ng, c\u00f3 m\u1ed9t s\u1ed1 thu\u1eadt ng\u1eef quan tr\u1ecdng m\u00e0 ch\u00fang ta n\u00ean bi\u1ebft. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 chi\u1ebfu s\u00e1ng v\u00e0 c\u00e1ch ch\u00fang ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

\n \"Kh\u00e1i
\n<\/figure>\n

1. \u00c1nh s\u00e1ng<\/h2>\n

1.1 \u00c1nh s\u00e1ng l\u00e0 g\u00ec?<\/h3>\n

\u00c1nh s\u00e1ng l\u00e0 tia x\u1ea1 ph\u1ed5 m\u00e0 m\u1eaft con ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y, n\u1eb1m trong kho\u1ea3ng t\u1eeb 380nm \u0111\u1ebfn 780nm. C\u00e1c tia x\u1ea1 b\u00ean ngo\u00e0i ph\u1ea1m vi n\u00e0y, ch\u1eb3ng h\u1ea1n nh\u01b0 tia c\u1ef1c t\u00edm, h\u1ed3ng ngo\u1ea1i ho\u1eb7c tia v\u00f4 tuy\u1ebfn, m\u1eaft con ng\u01b0\u1eddi kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c. D\u1ea3i \u00e1nh s\u00e1ng m\u00e0 m\u1eaft con ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 quang ph\u1ed5. N\u00f3 bao g\u1ed3m c\u00e1c m\u00e0u s\u1eafc t\u1eeb xanh lam, l\u1ee5c, v\u00e0ng, \u0111\u1ecf v\u00e0 c\u00e1c m\u00e0u s\u1eafc kh\u00e1c n\u1eb1m \u1edf gi\u1eefa. M\u1ed9t ngu\u1ed3n s\u00e1ng s\u1ebd c\u00f3 kh\u1ea3 n\u0103ng t\u00e1i t\u1ea1o nhi\u1ec1u m\u00e0u s\u1eafc n\u1ebfu n\u00f3 c\u00f3 nhi\u1ec1u m\u00e0u s\u1eafc trong quang ph\u1ed5. CRI (ch\u1ec9 s\u1ed1 t\u00e1i t\u1ea1o m\u00e0u) v\u00e0 quang ph\u1ed5 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng t\u00e1i t\u1ea1o m\u00e0u c\u1ee7a m\u1ed9t ngu\u1ed3n s\u00e1ng.<\/p>\n

1.2 Quang th\u00f4ng (lm)<\/h3>\n

Quang th\u00f4ng l\u00e0 \u0111o l\u01b0\u1eddng c\u00f4ng su\u1ea5t \u00e1nh s\u00e1ng ph\u00e1t ra t\u1eeb m\u1ed9t ngu\u1ed3n s\u00e1ng. \u0110\u01a1n v\u1ecb \u0111o quang th\u00f4ng l\u00e0 lumen (lm). Quang th\u00f4ng m\u00f4 t\u1ea3 t\u1ed5ng l\u01b0\u1ee3ng \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y c\u00f3 th\u1ec3 ph\u00e1t ra t\u1eeb m\u1ed9t ngu\u1ed3n s\u00e1ng trong m\u1ecdi h\u01b0\u1edbng. \u0110\u1ec3 \u0111o quang th\u00f4ng, ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb \u0111o g\u1ecdi l\u00e0 qu\u1ea3 c\u1ea7u Ulbricht.<\/p>\n

1.3 C\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng (cd)<\/h3>\n

C\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng l\u00e0 \u0111o l\u01b0\u1eddng quang th\u00f4ng c\u1ee7a ngu\u1ed3n s\u00e1ng ph\u00e1t ra trong m\u1ed9t h\u01b0\u1edbng nh\u1ea5t \u0111\u1ecbnh. C\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng \u0111\u01a1n v\u1ecb candela (cd). N\u00f3 m\u00f4 t\u1ea3 s\u1ef1 ph\u00e2n b\u1ed1 \u00e1nh s\u00e1ng tr\u00ean m\u1ed9t m\u1eb7t ph\u1eb3ng c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t \u0111\u00e8n ho\u1eb7c b\u00f3ng \u0111\u00e8n. \u0110\u1ec3 \u0111o c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng, ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb g\u1ecdi l\u00e0 goniometer.<\/p>\n

1.4 \u0110\u01b0\u1eddng cong ph\u00e2n b\u1ed1 c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng (LDC)<\/h3>\n

\u0110\u01b0\u1eddng cong ph\u00e2n b\u1ed1 c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng m\u00f4 t\u1ea3 c\u00e1ch \u00e1nh s\u00e1ng ph\u00e2n b\u1ed1 kh\u00f4ng gian t\u1eeb m\u1ed9t ngu\u1ed3n s\u00e1ng ho\u1eb7c \u0111\u00e8n chi\u1ebfu s\u00e1ng. \u0110\u00e2y th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng \u0111\u1ed3 th\u1ecb, cho th\u1ea5y s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a \u00e1nh s\u00e1ng. \u0110\u1ec3 \u0111o \u0111\u01b0\u1eddng cong ph\u00e2n b\u1ed1 c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng, ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb g\u1ecdi l\u00e0 goniometer.<\/p>\n

2. \u0110\u1ed9 s\u00e1ng v\u00e0 \u0111\u1ed9 r\u1ecdi<\/h2>\n

2.1 \u0110\u1ed9 r\u1ecdi (lx)<\/h3>\n

\u0110\u1ed9 r\u1ecdi l\u00e0 \u0111o l\u01b0\u1eddng m\u1ee9c \u00e1nh s\u00e1ng chi\u1ebfu l\u00ean m\u1ed9t b\u1ec1 m\u1eb7t c\u1ee5 th\u1ec3. \u0110\u01a1n v\u1ecb \u0111o \u0111\u1ed9 r\u1ecdi l\u00e0 lux (lx), \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng lumen tr\u00ean m\u00e9t vu\u00f4ng (lm\/m\u00b2). \u0110\u1ed9 r\u1ecdi \u0111o l\u01b0\u1eddng m\u1ee9c \u00e1nh s\u00e1ng c\u1ee5 th\u1ec3 m\u00e0 m\u1ed9t ngu\u1ed3n s\u00e1ng chi\u1ebfu s\u00e1ng l\u00ean m\u1ed9t di\u1ec7n t\u00edch. \u0110\u1ec3 \u0111o \u0111\u1ed9 r\u1ecdi, ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb \u0111o \u0111\u1ed9 r\u1ecdi g\u1ecdi l\u00e0 luxmeter. \u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n nh\u1edb l\u00e0 \u0111\u1ed9 r\u1ecdi kh\u00f4ng ph\u1ea3i l\u00e0 ch\u1ec9 s\u1ed1 \u0111\u1ed9 s\u00e1ng. V\u00ec v\u1eady, m\u1ed9t c\u0103n ph\u00f2ng c\u00f3 th\u1ec3 c\u00f3 c\u00f9ng \u0111\u1ed9 r\u1ecdi tr\u00ean s\u00e0n nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 nh\u00ecn t\u1ed1i h\u01a1n do m\u00e0u s\u1eafc v\u00e0 \u00e1nh s\u00e1ng trong c\u0103n ph\u00f2ng.<\/p>\n

2.2 \u0110\u1ed9 s\u00e1ng ngang (lx)<\/h3>\n

\u0110\u1ed9 s\u00e1ng ngang m\u00f4 t\u1ea3 m\u1ee9c \u0111\u1ed9 \u00e1nh s\u00e1ng tr\u00ean c\u00e1c kh\u00f4ng gian ngang, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u00e0n l\u00e0m vi\u1ec7c ho\u1eb7c b\u00e0n ph\u00edm v\u0103n ph\u00f2ng.<\/p>\n

2.3 \u0110\u1ed9 s\u00e1ng d\u1ecdc (lx)<\/h3>\n

\u0110\u1ed9 s\u00e1ng d\u1ecdc m\u00f4 t\u1ea3 m\u1ee9c \u0111\u1ed9 \u00e1nh s\u00e1ng tr\u00ean c\u00e1c khu v\u1ef1c th\u1eb3ng \u0111\u1ee9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 bi\u1ec3n hi\u1ec7u ho\u1eb7c b\u1ea3ng qu\u1ea3ng c\u00e1o.<\/p>\n

2.4 \u0110\u1ed9 s\u00e1ng h\u00ecnh tr\u1ee5 (lx)<\/h3>\n

\u0110\u1ed9 s\u00e1ng h\u00ecnh tr\u1ee5 \u0111o l\u01b0\u1eddng m\u1ee9c \u0111\u1ed9 \u00e1nh s\u00e1ng theo chi\u1ec1u d\u1ecdc c\u1ee7a h\u00ecnh d\u1ea1ng, v\u1eadt th\u1ec3 v\u00e0 khu\u00f4n m\u1eb7t ng\u01b0\u1eddi. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 \u0111\u1ea3m b\u1ea3o vi\u1ec7c chi\u1ebfu s\u00e1ng \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean c\u00e1c v\u1eadt th\u1ec3 v\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 khu\u00f4n m\u1eb7t m\u00e0 kh\u00f4ng c\u00f3 v\u00f9ng b\u1ecb b\u00f3ng.<\/p>\n

3. Ch\u00f3i v\u00e0 hi\u1ec7u \u1ee9ng nh\u1ea5p nh\u00e1y<\/h2>\n

3.1 Ch\u00f3i<\/h3>\n

\u00c1nh s\u00e1ng ch\u00f3i g\u00e2y m\u1ecfi m\u1eaft v\u00e0 kh\u00f3 nh\u00ecn r\u00f5 trong m\u1ed9t s\u1ed1 kh\u00f4ng gian nh\u1ea5t \u0111\u1ecbnh. \u00c1nh s\u00e1ng ch\u00f3i l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t v\u00e0 tho\u1ea3i m\u00e1i c\u1ee7a th\u1ecb gi\u00e1c. Ch\u00f3i tr\u1ef1c ti\u1ebfp x\u1ea3y ra khi \u0111\u00e8n ho\u1eb7c b\u1ec1 m\u1eb7t c\u00f3 \u0111\u1ed9 s\u00e1ng qu\u00e1 cao. V\u00ed d\u1ee5, n\u1ebfu m\u1ed9t \u0111\u00e8n kh\u00f4ng c\u00f3 bao b\u1ecdc ho\u1eb7c n\u1ebfu c\u00e1c \u0111\u00e8n \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t sai, ch\u00fang c\u00f3 th\u1ec3 ph\u00e1t ra \u00e1nh s\u00e1ng ch\u00f3i tr\u1ef1c ti\u1ebfp. Ch\u00f3i l\u00f3a gi\u00e1n ti\u1ebfp x\u1ea3y ra khi c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 t\u1eeb c\u00e1c b\u1ec1 m\u1eb7t, ch\u1eb3ng h\u1ea1n nh\u01b0 g\u01b0\u01a1ng ho\u1eb7c c\u00e1c b\u1ec1 m\u1eb7t c\u00f3 \u0111\u1ed9 s\u00e1ng b\u00f3ng cao nh\u01b0 m\u00e0n h\u00ecnh, gi\u1ea5y b\u00f3ng ho\u1eb7c \u0111\u01b0\u1eddng ph\u1ed1 \u1ea9m \u01b0\u1edbt. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i tr\u00e1nh \u00e1nh s\u00e1ng ch\u00f3i \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u1ea7m nh\u00ecn v\u00e0 gi\u1ea3m nguy c\u01a1 tai n\u1ea1n.<\/p>\n

3.2 Hi\u1ec7u \u1ee9ng nh\u1ea5p nh\u00e1y v\u00e0 Stroboscopic<\/h3>\n

Hi\u1ec7u \u1ee9ng nh\u1ea5p nh\u00e1y g\u00e2y kh\u00f3 ch\u1ecbu v\u00e0 c\u00f3 th\u1ec3 g\u00e2y t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c \u0111\u1ebfn th\u1ecb gi\u00e1c, g\u00e2y \u0111au \u0111\u1ea7u v\u00e0 m\u1ea5t t\u1eadp trung. Hi\u1ec7u \u1ee9ng stroboscopic c\u00f3 th\u1ec3 t\u1ea1o ra t\u00ecnh hu\u1ed1ng nguy hi\u1ec3m khi g\u00e2y bi\u1ebfn d\u1ea1ng trong vi\u1ec7c nh\u1eadn th\u1ee9c v\u1ec1 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn \u0111ang quay. Do \u0111\u00f3, h\u1ec7 th\u1ed1ng chi\u1ebfu s\u00e1ng n\u00ean \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 tr\u00e1nh c\u00e1c hi\u1ec7u \u1ee9ng n\u00e0y.<\/p>\n

4. C\u00e1c thu\u1eadt ng\u1eef kh\u00e1c<\/h2>\n

4.1 Nhi\u1ec7t \u0111\u1ed9 m\u00e0u (CCT)<\/h3>\n

M\u1ed7i ngu\u1ed3n s\u00e1ng s\u1ebd ph\u00e1t ra \u00e1nh s\u00e1ng theo m\u1ed9t m\u00e0u s\u00e1ng nh\u1ea5t \u0111\u1ecbnh. M\u00e0u s\u00e1ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi quang ph\u1ed5 c\u1ee7a ngu\u1ed3n s\u00e1ng v\u00e0 so s\u00e1nh v\u1edbi m\u1ed9t b\u1ed9 t\u1ea3n nhi\u1ec7t m\u00e0u \u0111en l\u00fd t\u01b0\u1edfng. Khi b\u1ed9 t\u1ea3n nhi\u1ec7t m\u00e0u \u0111en nhi\u1ec7t l\u00ean, n\u00f3 ph\u00e1t ra \u00e1nh s\u00e1ng m\u00e0 con ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y. Khi nhi\u1ec7t \u0111\u1ed9 c\u00e0ng cao, m\u00e0u s\u00e1ng c\u1ee7a b\u1ed9 t\u1ea3n nhi\u1ec7t c\u00e0ng l\u1ea1nh. Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a b\u1ed9 t\u1ea3n nhi\u1ec7t m\u00e0u \u0111en \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u1ea1ch \u0111en. Tuy nhi\u00ean, do qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 v\u1eadt li\u1ec7u, nhi\u1ec7t \u0111\u1ed9 m\u00e0u c\u1ee7a ngu\u1ed3n s\u00e1ng kh\u00f4ng lu\u00f4n n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng cong m\u00e0u c\u1ee7a b\u1ed9 t\u1ea3n nhi\u1ec7t m\u00e0u \u0111en. Nhi\u1ec7t \u0111\u1ed9 m\u00e0u t\u01b0\u01a1ng quan l\u00e0 gi\u00e1 tr\u1ecb x\u1ea5p x\u1ec9 c\u1ee7a nhi\u1ec7t \u0111\u1ed9 m\u00e0u kh\u00f4ng n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng cong m\u00e0u \u0111en, v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng \u0111\u01a1n v\u1ecb Kelvin (K). \u0110\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 m\u00e0u, ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t m\u00e1y \u1ea3nh \u0111o \u00e1nh s\u00e1ng, v\u00e0 ph\u1ea7n m\u1ec1m s\u1ebd t\u00ednh to\u00e1n nhi\u1ec7t \u0111\u1ed9 m\u00e0u d\u1ef1a tr\u00ean th\u00f4ng tin \u0111\u00f3.<\/p>\n

4.2 Ch\u1ec9 s\u1ed1 t\u00e1i t\u1ea1o m\u00e0u (CRI)<\/h3>\n

Ch\u1ec9 s\u1ed1 t\u00e1i t\u1ea1o m\u00e0u (CRI) m\u00f4 t\u1ea3 kh\u1ea3 n\u0103ng c\u1ee7a ngu\u1ed3n s\u00e1ng trong vi\u1ec7c t\u00e1i t\u1ea1o c\u00e1c m\u00e0u s\u1eafc. M\u1ed9t ch\u1ec9 s\u1ed1 CRI c\u00e0ng cao, ngu\u1ed3n s\u00e1ng c\u00e0ng t\u00e1i t\u1ea1o m\u00e0u s\u1eafc t\u1ed1t h\u01a1n. \u00c1nh s\u00e1ng m\u1eb7t tr\u1eddi v\u00e0 \u0111\u00e8n s\u1ee3i \u0111\u1ed1t c\u00f3 ch\u1ec9 s\u1ed1 CRI 100 (ch\u1ec9 s\u1ed1 t\u1ed1t nh\u1ea5t). Ch\u00fang c\u00f3 quang ph\u1ed5 r\u1ed9ng v\u00e0 \u0111\u1ea1i di\u1ec7n cho t\u1ea5t c\u1ea3 c\u00e1c m\u00e0u s\u1eafc. Ch\u1ec9 s\u1ed1 CRI c\u1ee7a \u0111\u00e8n LED th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng t\u1eeb 70 \u0111\u1ebfn 95, trong khi \u0111\u00e8n hu\u1ef3nh quang c\u00f3 ch\u1ec9 s\u1ed1 CRI trong kho\u1ea3ng t\u1eeb 60 \u0111\u1ebfn 98. Khi ch\u1ecdn ngu\u1ed3n s\u00e1ng cho m\u1ed9t d\u1ef1 \u00e1n, vi\u1ec7c xem x\u00e9t ch\u1ec9 s\u1ed1 CRI l\u00e0 r\u1ea5t quan tr\u1ecdng. V\u00ed d\u1ee5, khu\u00f4n m\u1eb7t c\u1ea7n \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng b\u1eb1ng m\u1ed9t ngu\u1ed3n s\u00e1ng c\u00f3 ch\u1ec9 s\u1ed1 CRI cao \u0111\u1ec3 l\u00e0m cho l\u00e0n da tr\u00f4ng kh\u1ecfe m\u1ea1nh. Nh\u00e0 h\u00e0ng mu\u1ed1n m\u00f3n \u0103n c\u1ee7a m\u00ecnh tr\u00f4ng ngon v\u00e0 th\u1ec3 hi\u1ec7n \u0111\u1ea7y \u0111\u1ee7 c\u00e1c m\u00e0u s\u1eafc c\u1ee7a th\u1ef1c ph\u1ea9m. Trong kho nh\u00e0 kho l\u01b0u tr\u1eef h\u00e0ng h\u00f3a, ch\u1ec9 c\u1ea7n c\u00f3 \u00e1nh s\u00e1ng t\u1eeb c\u00e1c \u0111\u00e8n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c s\u1ea3n ph\u1ea9m m\u00e0 kh\u00f4ng c\u1ea7n quan t\u00e2m \u0111\u1ebfn m\u00e0u s\u1eafc, n\u00ean ch\u1ec9 s\u1ed1 CRI 70 l\u00e0 \u0111\u1ee7. \u0110\u1ec3 \u0111o ch\u1ec9 s\u1ed1 CRI, ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t m\u00e1y \u1ea3nh \u0111o \u00e1nh s\u00e1ng, v\u00e0 ph\u1ea7n m\u1ec1m s\u1ebd t\u00ednh to\u00e1n ch\u1ec9 s\u1ed1 CRI d\u1ef1a tr\u00ean th\u00f4ng tin \u0111\u00f3.<\/p>\n

4.3 Quang ph\u1ed5<\/h3>\n

Quang ph\u1ed5 l\u00e0 d\u1ea3i m\u00e0u s\u1eafc \u0111\u01b0\u1ee3c nh\u00ecn th\u1ea5y trong \u00e1nh s\u00e1ng t\u1eeb 380nm \u0111\u1ebfn 780nm. M\u1ed7i ngu\u1ed3n s\u00e1ng c\u00f3 m\u1ed9t quang ph\u1ed5 b\u1ee9c x\u1ea1 \u00e1nh s\u00e1ng ri\u00eang. V\u00ed d\u1ee5, \u0111\u00e8n s\u1ee3i \u0111\u1ed1t c\u00f3 quang ph\u1ed5 li\u00ean t\u1ee5c. C\u00e1c lo\u1ea1i \u0111\u00e8n hu\u1ef3nh quang v\u00e0 \u0111\u00e8n LED c\u00f3 quang ph\u1ed5 kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf v\u00e0 nguy\u00ean li\u1ec7u s\u1eed d\u1ee5ng. \u0110\u1ec3 \u0111o quang ph\u1ed5, ch\u00fang ta s\u1eed d\u1ee5ng m\u00e1y \u1ea3nh \u0111o \u00e1nh s\u00e1ng v\u00e0 ph\u1ea7n m\u1ec1m s\u1ebd ghi l\u1ea1i c\u00e1c b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau v\u00e0 bi\u1ec3u di\u1ec5n quang ph\u1ed5 t\u1eeb th\u00f4ng tin \u0111\u00f3.<\/p>\n

4.4 G\u00f3c b\u1ee9c x\u1ea1<\/h3>\n

G\u00f3c b\u1ee9c x\u1ea1 l\u00e0 g\u00f3c m\u00e0 \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c ph\u00e1t ra t\u1eeb ngu\u1ed3n s\u00e1ng. G\u00f3c b\u1ee9c x\u1ea1 ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf quang h\u1ecdc c\u1ee7a \u0111\u00e8n. G\u00f3c b\u1ee9c x\u1ea1 nh\u1ecf s\u1ebd t\u1ea1o ra \u00e1nh s\u00e1ng t\u1eadp trung v\u00e0o m\u1ed9t di\u1ec7n t\u00edch nh\u1ecf, trong khi g\u00f3c b\u1ee9c x\u1ea1 l\u1edbn s\u1ebd t\u1ea1o ra \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n r\u1ed9ng. G\u00f3c b\u1ee9c x\u1ea1 nh\u1ecf th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m n\u1ed5i b\u1eadt c\u00e1c v\u1eadt th\u1ec3. Trong khi \u0111\u00f3, g\u00f3c b\u1ee9c x\u1ea1 l\u1edbn th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho \u00e1nh s\u00e1ng chung trong c\u00e1c kh\u00f4ng gian r\u1ed9ng. \u0110\u1ec3 \u0111o g\u00f3c b\u1ee9c x\u1ea1, ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb \u0111o g\u1ecdi l\u00e0 goniometer.<\/p>\n

5. K\u1ebft lu\u1eadn<\/h2>\n

\u0110\u00f3 l\u00e0 m\u1ed9t s\u1ed1 thu\u1eadt ng\u1eef c\u01a1 b\u1ea3n trong ng\u00e0nh chi\u1ebfu s\u00e1ng m\u00e0 ch\u00fang ta n\u00ean bi\u1ebft. N\u1ebfu b\u1ea1n c\u00f3 b\u1ea5t k\u1ef3 th\u1eafc m\u1eafc v\u1ec1 b\u1ea5t k\u1ef3 thu\u1eadt ng\u1eef n\u00e0o trong b\u00e0i vi\u1ebft n\u00e0y ho\u1eb7c c\u00f3 b\u1ea5t k\u1ef3 thu\u1eadt ng\u1eef n\u00e0o kh\u00e1c m\u00e0 ch\u00fang t\u00f4i ch\u01b0a \u0111\u1ec1 c\u1eadp, h\u00e3y li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed.<\/p>\n

LADEC<\/em> l\u00e0 trung t\u00e2m \u0111\u00e0o t\u1ea1o chuy\u00ean v\u1ec1 chi\u1ebfu s\u00e1ng t\u1ea1i Vi\u1ec7t Nam. Xem th\u00eam th\u00f4ng tin v\u1ec1 c\u00e1c kh\u00f3a h\u1ecdc v\u00e0 d\u1ecbch v\u1ee5 c\u1ee7a ch\u00fang t\u00f4i t\u1ea1i https:\/\/dialtous.com<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p chi\u1ebfu s\u00e1ng, c\u00f3 m\u1ed9t s\u1ed1 thu\u1eadt ng\u1eef quan tr\u1ecdng m\u00e0 ch\u00fang ta n\u00ean bi\u1ebft. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 chi\u1ebfu s\u00e1ng v\u00e0 c\u00e1ch ch\u00fang ho\u1ea1t \u0111\u1ed9ng. 1. \u00c1nh s\u00e1ng 1.1 \u00c1nh s\u00e1ng l\u00e0 g\u00ec? \u00c1nh s\u00e1ng l\u00e0 tia x\u1ea1 ph\u1ed5 m\u00e0 m\u1eaft con ng\u01b0\u1eddi c\u00f3 th\u1ec3 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-9194","post","type-post","status-publish","format-standard","hentry","category-hoi-dap"],"_links":{"self":[{"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/posts\/9194"}],"collection":[{"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/comments?post=9194"}],"version-history":[{"count":1,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/posts\/9194\/revisions"}],"predecessor-version":[{"id":9197,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/posts\/9194\/revisions\/9197"}],"wp:attachment":[{"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/media?parent=9194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/categories?post=9194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dialtous.com\/wp-json\/wp\/v2\/tags?post=9194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}