LED=Lub teeb Emitting Diode, lub teeb-emitting diode, yog ib qho khoom siv hluav taws xob semiconductor muaj peev xwm hloov hluav taws xob hluav taws xob mus rau qhov pom kev.
LED zaub tuaj yeem hloov hluav taws xob ncaj qha rau hauv lub teeb. Nws hloov lub hauv paus ntsiab lus ntawm incandescent tungsten filament teeb thiab lub zog txuag teeb peb-xim hmoov lub teeb, thiab siv hluav taws xob teeb pom kev zoo.
Cov yam ntxwv ntawm LED zaub yog pom tseeb heev, lub neej ntev, kev ua haujlwm siab luminous, tsis muaj hluav taws xob thiab kev siv hluav taws xob tsawg. Lub spectrum ntawm LED zaub yog yuav luag tag nrho cov concentrated nyob rau hauv lub teeb pom kev zoo band, thiab nws luminous efficiency yuav ntau tshaj 150lm / W (2010). Muab piv cov LED zaub nrog cov teeb pom kev zoo tib yam, cov teeb hluav taws xob txuag hluav taws xob thiab T5 peb lub teeb fluorescent, cov txiaj ntsig tau pom tias qhov kev ua tau zoo ntawm cov teeb pom kev zoo tib yam yog 12lm / W, lub neej ntev yog tsawg dua 2000 teev, thiab cov luminous efficiency. Lub teeb txuag hluav taws xob yog 60lm / W, Lub neej ntev yog tsawg dua 8000 teev, T5 fluorescent teeb yog 96lm / W, thiab lub neej ntev yog li 10000 teev, thaum lub teeb pom kev zoo ntawm lub teeb dawb LED nrog lub cheeb ntawm 5. mm muaj peev xwm theoretically tshaj 150lm / W, thiab lifespan yuav ntau tshaj 100000 teev. Qee tus neeg kuj kwv yees tias qhov kev txwv siab tshaj ntawm LED lub neej yav tom ntej yuav tsis kawg.
Lub plawv ntawm LED zaub yog semiconductor nti,
Ib qho kawg ntawm LED zaub (12 nplooj ntawv) nti txuas rau lub bracket, ib qho kawg yog qhov tsis zoo electrode, thiab lwm qhov kawg yog txuas nrog cov khoom siv hluav taws xob zoo ntawm lub hwj chim, kom tag nrho cov nti yog encapsulated los ntawm epoxy resin. Lub semiconductor wafer muaj ob feem, ib feem yog P-hom semiconductor, nyob rau hauv uas lub qhov dominate, thiab lwm yam kawg yog N-hom semiconductor, qhov twg electrons feem ntau. Tab sis thaum ob lub semiconductors txuas nrog, PN kev sib tshuam yog tsim los ntawm lawv. Thaum cov tam sim no ua rau lub wafer los ntawm cov hlau, cov electrons yuav raug thawb mus rau thaj tsam P, qhov twg cov electrons thiab qhov recombine, thiab ces emit zog nyob rau hauv daim ntawv ntawm photons, uas yog lub hauv paus ntsiab lus ntawm Jinan LED zaub teeb. Lub wavelength ntawm lub teeb, uas kuj yog xim ntawm lub teeb, yog txiav txim los ntawm cov khoom uas tsim PN hlws ris.
Thawj LED zaub tau siv los ua qhov taw qhia lub teeb ci rau cov ntsuas thiab ntsuas. Tom qab ntawd, LED cov lus qhia ntawm ntau lub teeb xim tau siv dav hauv cov teeb tsheb thiab cov chaw loj. Xim coj zaub thiab lwm hom tau tsim cov txiaj ntsig zoo ntawm kev lag luam thiab kev sib raug zoo.
