Kev txhim kho kev lag luam tau txhawb nqa kev vam meej ntawm kev tshawb fawb thiab thev naus laus zis. Cov khoom siv LED tau siv ntau thiab ntau dua hauv peb lub neej. Yog li thaum kuaj pom qhov pom tseeb ntawm LED zaub, nws zoo li qub, yuav daws nws li cas? Niaj hnub no, tus editor ntawm YONGS LED zaub yuav qhia koj tias dab tsi yog txoj hauv kev los txhim kho qhov pom tseeb ntawm kev nthuav qhia?
1. Grey nplai ntawm LED puv xim zaub
Grey scale tswvyim: Grey scale yog hais txog tus naj npawb ntawm brightness theem uas yuav txawv los ntawm ib tug tsaus nti mus rau brighter nyob rau hauv lub brightness ntawm ib tug thawj xim ntawm ib tug tag nrho-xim LED zaub.
Qhov siab dua ntawm qib grey ntawm LED puv xim zaub, cov xim nplua nuj thiab cov xim ci dua; ntawm qhov tsis sib xws, cov xim zaub yog ib leeg thiab qhov kev hloov pauv yooj yim. Kev txhim kho ntawm qib grey tuaj yeem txhim kho qhov tob xim zoo nkauj, yog li cov duab qib ntawm cov duab xim yog geometrically nce. Lub LED greyscale tswj theem yog 14-16 ntsis, uas ua rau cov duab theem daws teeb meem cov ntsiab lus thiab tso saib cov teebmeem ntawm high-end zaub cov khoom ncav cuag lub ntiaj teb qib siab.
Qhov thib ob, kev txhim kho qhov sib piv piv ntawm LED puv xim zaub
Lub tswv yim ntawm qhov sib piv: Hauv chav tsaus, qhov ci ntawm daim duab dawb (thaum nws ci dua) muab faib los ntawm qhov ci ntawm daim duab dub (thaum tsaus ntuj). Qhov loj dua qhov sib piv, ntau qib gradient los ntawm cov xim dub mus rau dawb, thiab ntau dua cov xim qhia.
Qhov sib txawv yog ib qho tseem ceeb cuam tshuam rau kev pom kev pom. Feem ntau hais lus, qhov siab dua qhov sib piv, cov duab pom tseeb dua thiab cov xim ci dua. High contrast yog pab tau heev rau cov duab clarity, nthuav dav kev ua tau zoo, thiab grayscale kev ua tau zoo. Hauv qee cov ntawv nyeem thiab cov yeeb yaj kiab uas muaj qhov sib txawv ntawm cov xim dub thiab dawb siab, qhov sib txawv ntawm LED muaj qhov zoo ntawm qhov sib piv ntawm cov xim dub thiab dawb, qhov pom tseeb, kev ncaj ncees, thiab lwm yam. Qhov sib txawv muaj qhov cuam tshuam ntau dua rau cov duab ntawm cov yeeb yaj kiab dynamic. Vim hais tias lub teeb thiab tsaus ntuj hloov nyob rau hauv dynamic dluab yog kuj ceev, qhov siab dua qhov sib piv, qhov yooj yim dua nws yog rau tib neeg lub qhov muag kom paub qhov txawv xws li ib tug txoj kev hloov.
Muaj ob txoj hauv kev los txhim kho qhov sib piv ntawm cov duab:
Txoj kev tseem ceeb los txhim kho qhov sib piv;
Ib qho yog ua kom lub teeb ci ntawm cov zaub.
Qhov thib ob yog kom txo tau lub teeb reflection coefficient ntawm cov zaub screen nto.
Txoj kev suav:
Contrast=brightness thaum emitting lub teeb (luminous brightness) / brightness thaum tsis emitting lub teeb (reflection brightness)
Yuav kom tso tau cov ntawv nyeem thiab cov duab nrog lub teeb ci, tsis hais lub teeb ambient, lub vijtsam yuav tsum muaj qhov sib txawv txaus. Lub brightness thaum nws tsis emit lub teeb yog proportional rau lub ambient teeb thiab lub reflection coefficient ntawm lub screen, thaum lub contrast ratio yog inversely proportional. , sim txo lub teeb pom kev coefficient ntawm lub vijtsam saum npoo, qhov qis dua lub teeb pom kev coefficient ntawm cov khoom siv ntawm lub vijtsam yog tswj, qhov siab dua qhov sib piv tuaj yeem lav tau raws li qhov xwm txheej uas lub vijtsam luminous siv zog tseem tsis hloov. Rau kev tswj hwm lub teeb pom kev zoo ntawm qhov chaw, peb siv cov ntaub ntawv tshwj xeeb thiab cov txheej txheem kev ua haujlwm tshwj xeeb los xyuas kom meej tias lub teeb pom kev zoo coefficient tsis ntau dua 3.5 feem pua. Feem ntau hais lus, qhov sib piv ntawm qhov screen yuav tsum nyob ib ncig ntawm 10, kom tib neeg lub qhov muag yuav muaj kev xav zoo dua.
