Tsev > Xov xwm > Ntsiab lus

Gamut Kho

Nov 16, 2017

Thaum kho qhov teebmeem ntawm gamut yog ua kom tiav, lub phiaj xwm ci ntawm txhua lub LED yuav tsum tau txiav txim xyuas dua li ntawm ntau yam ntawm cov phiaj xim gamut. Cov teeb ci ntawm LED tuaj yeem ncaj qha ncaj qha los ntawm Y cov nqi ntawm peb qhov txiaj ntsig, thiab lub chromaticity tuaj yeem sawv cev ntawm cov xim xim formula (1) hauv CIE1931XYZ xim chaw.


Nyob rau hauv xim xim yob, tag nrho cov teeb pom kev zoo ntawm cov roj teeb liab yuav tsum zoo sib xws, yog li cov phiaj xwm yuav raug xaiv tsawg kawg nkaus ntawm tag nrho cov LED hauv lub ci ntsa iab, xws li hauv Table 1 liab LED ua piv txwv, qhov tsawg kawg nkaus ntawm 31 Y, lub hom phiaj xim ntawm (0.687, 0.3105), xim xim hom (1) tuaj yeem xam. Tau lub hom phiaj thaum lub xim liab ntawm peb qho txiaj ntsim kev tsim txiaj rau:

9.png

Hauv daim ntawv no, XR, YR thiab ZR yog siv los sawv cev rau lub phiaj peb qhov txiaj ntsig ntawm cov liab liab. Xr, Yr thiab Zr sawv cev tam sim no peb qhov tseem ceeb ntawm cov liab liab, thiab LED ntawm lwm cov xim ua cov ntsiab lus zoo sib xws.

Nws tuaj yeem paub los ntawm cov qauv kev ua zauv ntawm formula (2) thiab formula (3) uas thaum lub teeb hloov ntawm LED hloov, nws peb tus nqi kev ua haujlwm kuj hloov tau linearly. Ua ntej kho, cov xim liab luminescence tuaj yeem hais tau tias:

10.png

Cov xim liab tshiab ntawm cov kev kho tshiab, dhau mus rau ib qho qauv peb xim LED pixel multiplied los ntawm cov coefficient hauv kev sib txawv ntawm emitting ua ke ntawm peb cov xim LED hloov xim thawj xim liab xim li LED ib leeg, peb ntawm peb thawj xim ntawm lub teeb stimulation LED nqi yuav tsum yog xim liab peb lub hom phiaj, nws yuav piav raws li:

11.png

Hauv formula (7), thaum kr1 = 1, kr2 = 0, kr3 = 0, qhov ntawd yog qhov formula (6) nruab nrab yog lub teeb liab liab pem hauv ntej ntawm lub tsev kawm ntawv ib leeg, qhov formula formula (7)

12.png

Cov kev kho ntawm coefficient ntawm LED liab tuaj yeem tau los ntawm cov mis (8), thiab qhov theoretical peb qhov txiaj ntsim ntawm tus tshiab thawj xim liab yog p thaum qib txhoj yog:

13.png

Ib qho kev txhim kho ntawm ntsuab, ntsuab thiab xiav LED hauv Table 1 yuav muab tau nrog coefficients coefficients kg1, kg2, kG3 thiab xiav tus cai tswj xiav cov xim co1 kg1, kg2, kG3 rau ntsuab LED. Nws yuav tsum tau muab sau tseg tias thaum cov duab pixel xav tau kev tso siab tshaj plaws "dawb teb", liab liab ci ntsa iab nyob hauv daim teb dawb tuaj ntawm cov xim liab thawj xim, xim ntsuab xim thiab xim thawj xim, feem.

14.png

 

Hauv cov mis (5), nws yuav ua rau qhov kev kho ntawm Y "R ntawm cov xim ib zaug yog teem los ntawm ntau cov kr1 + kg1 + kb1 yog loj dua 1, hom (10) hauv tus nqi X yuav tsum yog loj dua qhov ci ntsa iab tshaj plaws, xim liab pom zoo, nws yog ib qho tsim nyog kom tsis txhob, qhov teeb meem no yog qhov sib npaug dawb tom qab sib tham.


Xim gamut kho tau raws li qhia hauv daim duab 3 thiab cov lus 1 qhia tau hais tias qhov kev ntsuas ntawm peb qhov txiaj ntsig ntawm qhov hom phiaj thiab peb qhov txiaj ntsim ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv yog qhov tsawg dua 3%, ze ntawm kev ntsuas qhov khoom, cov thawj xim tswj cov txheeb ze txhim kho ua ntej qhov kev hloov aggregation tau obviously zoo dua, qhov sib txawv ntawm cov xim xim hauj lwm thiab xim xim ntawm lub hom phiaj yog ze rau 0.05 [3].


Yuav tsum tau nco ntsoov tias qhov kawg yog zoo nrog qhov tseeb ntawm cov kev kho cov nyhuv siv kho nyob rau hauv daim ntawv no, kev kho qhov tseeb ntawm cov neeg muaj 10 phaus, thaum kho qhov tseeb ntawm qhov system txaus, LED xim coordinate theory tom qab kho ntawm aggregation ua "taw tes", kev kho qhov tseeb yuav ntxiv txhim kho.

 

15.png