LED teeb nyem yog ib hom tshiab teeb nyem nrog LED (Light Emitting Diode) ua lub teeb ci. Vim tias LED muaj cov yam ntxwv ntawm kev ci ntsa iab, kev siv hluav taws xob tsawg, lub neej ntev thiab me me, nws yog qhov kev xaiv zoo tshaj plaws rau lub teeb pom kev zoo. Atomic electrons muaj ntau lub zog. Thaum cov hluav taws xob hloov pauv ntawm lub zog siab mus rau qib qis zog, lub zog ntawm cov hluav taws xob txo qis, thiab lub zog txo tau hloov mus rau hauv photons thiab tawm. Ib tug loj tus naj npawb ntawm cov photons yog lasers.
Lub hauv paus ntsiab lus ntawm LED teeb pom kev zoo sib xws. Txawm li cas los xij, qhov sib txawv yog tias LEDs tsis tawm lub teeb los ntawm hluav taws xob dhia hauv atoms, tab sis los ntawm kev siv lub zog hluav taws xob hla PN kev sib tshuam ntawm LED ua rau PN hlws ris nws tus kheej tsim lub zog theem (qhov tseeb, ntau theem ntawm lub zog). theem), thiab tom qab ntawd electrons dhia ntawm qib zog no thiab tsim cov photons kom tawm lub teeb.
Cov khoom siv LED tshiab muaj qhov zoo ntawm kev siv hluav taws xob tsawg, lub teeb ci siab, lub neej ntev, thiab qhov me me. Kab lus no pib nrog keeb kwm luv luv ntawm kev txhim kho ntawm LED cov khoom siv. Txoj kev loj hlob zoo muaj qee qhov kev siv tus nqi rau Suav engineers koom nrog kev tsim khoom siv.
Qhov tshwm sim ntawm xiav LEDs tau ua rau nws muaj peev xwm hloov qee qhov siab dua-lub zog xiav lub teeb rau hauv lwm cov xim siv cov khoom siv rov qab-hloov phosphorescent. Tag nrho cov xim saturated hauv CIE chromaticity nkhaus tuaj yeem ua tiav nrog cov teeb pom kev zoo ntawm LED ib leeg, thiab cov organic sib xyaw ntawm ntau cov xim LEDs nrog phosphors tuaj yeem tsim yuav luag txhua xim yam tsis muaj kev txwv. Hais txog kev ntseeg siab, ib nrab-lub neej ntawm LED (lub sijhawm nws siv rau lub teeb tso zis kom txo qis rau ib nrab ntawm nws cov nqi qub) yog li 10,000 txog 100,000 teev. Nyob rau hauv sib piv, ib nrab-lub neej ntawm me me qhia incandescent teeb (ntawm no ib nrab-lub neej yog hais txog lub sij hawm thaum ib nrab ntawm cov teeb tsis ua hauj lwm) feem ntau nyob rau hauv thaj tsam ntawm 100, 000 mus rau ntau txhiab teev, nyob ntawm seb ntsuas kev khiav hauj lwm tam sim no ntawm lub teeb.
