Nyob rau hauv xyoo tas los no, nrog kev siv dav dav ntawm solid-stateLED teeb pom kev zoo fixtures, ntau tus neeg kuj tseem sim tshuaj xyuas qhov nyuaj thiab tswj txoj hauv kev ntawm LED xim tshuab.

Hais txog Additive Mixing

LED dej nyab teebsiv ntau lub teeb ci kom tau txais ntau yam xim thiab siv zog. Rau kev lom zem kev lag luam teeb pom kev zoo, ntxiv thiab sib tov xim yog twb yog ib tug clich é. Tau ntau xyoo, cov kws kho mob tau siv cov teeb pom kev zoo nrog cov xim lim dej los ua ib qho chaw zoo tib yam ntawm cov ntoo, uas tsis yooj yim rau kev tswj. Lub tsom teeb nrog peb lub teeb MR16, txhua qhov muaj xim liab, ntsuab, thiab xiav lim. Thaum ntxov, hom teeb no tsuas muaj peb DMX512 tswj raws thiab tsis muaj kev ywj pheej tswj lub zog. Yog li nws tsis yooj yim kom cov xim tsis hloov thaum lub sijhawm dimming. Feem ntau, khoos phis tawj lub teeb programmers kuj teeb tsa "teeb ​​pom kev hloov xim" kom yooj yim tua lub teeb. Tau kawg, muaj txoj hauv kev zoo dua, thiab kuv yuav tsis sau lawv tag nrho ntawm no.

Tswj thiab txhais cov xim

Yog tias tus neeg siv tsis siv cov txiaj ntsig DMA ntshiab los tswj cov teeb pom kev ntse ntse, tab sis siv qee qhov kev tswj tsis pom tseeb, tus nqi siv zog siv tau. Txawm hais tias cov chaw tsim khoom qhia tias cov teeb pom kev zoo siv peb txoj hauv kev DMA, txoj kev tswj kev paub daws teeb meem tseem tuaj yeem muab plaub lub luag haujlwm los tswj: siv tus nqi thiab peb xim tsis muaj.

Peb cov xim tsis "siv liab, ntsuab, thiab xiav, vim RGB tsuas yog ib txoj hauv kev los piav txog xim. Lwm txoj hauv kev los piav txog nws yog xim daj, saturation, thiab luminance HSL (ib txhia hu nws siv los yog lightness, es tsis brightness). Lwm qhov kev piav qhia yog xim daj, saturation, thiab tus nqi HSV. Tus nqi, tseem hu ua brightness, zoo ib yam li Luminance. Txawm li cas los xij, muaj qhov sib txawv tseem ceeb hauv lub ntsiab lus ntawm kev saturation ntawm HSL thiab HSV. Rau kev yooj yim, hauv kab lus no, tus neeg sau txhais cov xim xim thiab saturation raws li tus nqi ntawm cov xim. Yog tias 'L' yog teem rau 100%, nws yog dawb, 0% yog dub, thiab 50% ntawm L yog xim ntshiab nrog saturation ntawm 100%. Rau 'V', O% yog dub thiab 100% yog khoom, thiab tus nqi saturation yuav tsum ua rau qhov sib txawv.

Lwm txoj kev piav qhia zoo yog CMY, uas yog peb lub hauv paus xim uas siv cov xim sib tov sib xyaw. Yog tias lub teeb dawb raug tso tawm thaum xub thawj, ces ob lub lim dej tuaj yeem siv kom tau txais xim liab: magenta thiab daj; Lawv tshem tawm cov khoom ntsuab thiab xiav ntawm lub teeb dawb cais. Feem ntau,LED xim hloov teebtsis txhob siv cov xim sib xyaw ua ke, tab sis qhov no tseem yog ib txoj hauv kev zoo los piav txog xim.

Hauv txoj kev xav, thaum tswj cov LEDs, nws yuav tsum tau kho qhov siv thiab RGB, CMY Ib qho ntawm HSL lossis HSV (nrog qee qhov sib txawv ntawm lawv).

Hais txog LED xim sib xyaw

Tib neeg lub qhov muag tuaj yeem ntes lub teeb nrog wavelengths xws li 390 nm txog 700 nm. Thawj qhov teeb tsa LED tsuas yog siv liab (kwv yees li 630 nm), ntsuab (kwv yees li 540 nm), thiab xiav (kwv yees li 470 nm) LEDs. Peb cov xim no tsis tuaj yeem sib xyaw kom tsim tau txhua yam xim pom rau tib neeg lub qhov muag