Xa isikrini sokubonisa i-LED sisetyenziselwa kwigumbi lokulawula, i-studio yeTV kunye nezinye iindawo, ngamanye amaxesha kuya kubangela ukuphazamiseka kwe-moire kumfanekiso wekhamera.Eli phepha lazisa izizathu kunye nezisombululo ze-moire, kwaye ligxile kwindlela yokukhetha isikrini sokubonisa i-LED ukunciphisa okanye ukuphelisa i-moire.
1.Yabakho njani imoire?
2.Indlela yokuphelisa okanye ukunciphisa i-moire?
3.Indlela yokutshintsha isakhiwo segridi ye-CCD yekhamera kunye nomboniso we-LED?
4.Indlela yokutshintsha ixabiso elihambelanayo le-CCD yekhamera kunye ne-LED yokubonisa isakhiwo segridi?
5.Ingaba ikhona indlela yokuguqula indawo emnyama engakhanyisiyo ibe yindawo ekhanyayo kumboniso we-LED?
Xa uthatha imifanekiso kwiscreen sokubonisa i-elektroniki se-LED sisebenza, kuya kuvela imivimbo engaqhelekanga kunye neeripples ezingaqhelekanga.Le mibhobho ibizwa ngokuba yi-moire fringes okanye iziphumo ze-moire.Umphumo weMoire ngumbono obonakalayo.Xa iqela lemigca okanye amanqaku ebonwa ebekwe ngaphezulu kwelinye iqela lemigca okanye amanqaku, le migca okanye amanqaku ahluka ngokobungakanani, i-engile okanye isithuba.
Impembelelo ephambili yempembelelo kaMoore ngumabonwakude kunye nekhamera.Ukuba ukukhanya phakathi kweepikseli ze-LED yesikrini sokubonisa i-electronic screen akulingani, umgangatho womfanekiso kwi-LED screen display screen uya kuchaphazeleka kwaye ilitha liya kubangelwa xa isikrini sokubonisa sijongwa ngokusondeleyo.Oku kubangela umngeni omkhulu ekuveliseni izitudiyo zeTV kunye nezinye izixhobo zevidiyo.
(1) Yabakho njani imoire?
Moire:
Xa iipateni ezimbini ezine-spatial frequency overlaption, enye ipateni entsha idla ngokuveliswa, edla ngokubizwa ngokuba yipatheni ye-moire (njengoko kubonisiwe kuMfanekiso 2).
Isikrini somboniso we-LED wemveli ucwangciswe ngeepikseli ezikhanyayo ezizimeleyo, kwaye kukho iindawo ezicacileyo ezingakhanyisiyo ezimnyama phakathi kweepikseli.Kwangaxeshanye, into enovakalelo yekhamera yedijithali nayo inendawo ecacileyo yokukhanya ebuthathaka xa iva ukukhanya.Xa umboniso wedijithali kunye neefoto zedijithali zikhona ngexesha elifanayo, ipateni ye-moire iyazalwa.
Ekubeni i-CCD (inzwa yomfanekiso) indawo ekujoliswe kuyo (i-photosensitive surface) yekhamera ifana nomfanekiso ophakathi kwe-Figure 2, ngelixa isikrini se-LED sendabuko sifana nomfanekiso kwicala lasekhohlo loMzobo 2. Iqulunqwe. yeetyhubhu ezikhupha ukukhanya ezicwangciswe ngendlela ehambelanayo.Iscreen esipheleleyo somboniso sinendawo enkulu engakhanyisiyo, eyenza igridi njengepateni.Ukugqithwa kwezi zimbini zenza ipateni ye-moire efana necala lasekunene loMzobo 2.
(2) Indlela yokuphelisa okanye ukunciphisa i-moire?
Ekubeni i-LED yesakhiwo segridi ye-LED isebenzisana nekhamera ye-CCD yegridi yekhamera ukwenza iipatheni ze-moire, ukutshintsha ixabiso elihambelanayo kunye nesakhiwo segridi yekhamera ye-CCD yekhamera kunye nesakhiwo segridi ye-LED inokuphelisa okanye ukunciphisa iipatheni ze-moire.
(3) Ungasitshintsha njani isakhelo segridi yeCCD yekhamera kunye nomboniso we-LED?
Kwinkqubo yokurekhoda ifilimu, akukho pixel kunye nokusabalalisa rhoqo, ngoko akukho zihlandlo ezisisigxina zendawo kwaye akukho moire.
Ke ngoko, i-moire phenomenon yingxaki ebangelwa yidijithali yekhamera yeTV.Ukuphelisa i-moire, isisombululo somfanekiso wesikrini se-LED esithathwe kwi-lens kufuneka sibe ngaphantsi kakhulu kunobuninzi besithuba sento enovakalelo.Xa le meko idibene, akukho mida efana naleyo yenzwa inokuvela emfanekisweni, kwaye ke akukho moire iya kuveliswa.
Kwezinye iikhamera zedijithali, icebo lokucoca elisezantsi lifakelwe ukuhluza indawo ephezulu ye-spatial frequency yomfanekiso ukuze kuncitshiswe i-moire, kodwa oku kuyakunciphisa ububukhali bomfanekiso.Ezinye iikhamera zedijithali zisebenzisa i-spatial frequency sensing elements.
(4) Ungalitshintsha njani ixabiso lekhamera yeCCD kunye nesakhiwo segridi ye-LED?
1. Guqula i-engile yokudubula yekhamera.Ngokujikeleza ikhamera kunye nokutshintsha kancinci i-angle yokudubula yekhamera, i-moire ripple inokupheliswa okanye iyancipha.
2. Guqula indawo yokudubula kwekhamera.Ngokuhambisa ikhamera ngakwesobunxele nasekunene okanye phezulu naphantsi, unokuphelisa okanye ukunciphisa i-mole ripple.
3. Tshintsha useto ekugxilwe kulo kwikhamera.Ingqwalasela kunye neenkcukacha eziphezulu ezicace kakhulu kwimizobo eneenkcukacha zinokubangela ukuba i-mole ripples.Ukutshintsha kancinane ukucwangciswa kokugxilwa kunokutshintsha ukucaca, ngaloo ndlela kunceda ukuphelisa i-mole ripples.
4. Guqula ubude obugxile kwilensi.Iilensi ezahlukeneyo okanye izicwangciso zobude obugxininisiweyo zingasetyenziselwa ukuphelisa okanye ukunciphisa i-molar ripple.
Isikrini se-LED sicwangciswa ngeepikseli ezikhanyayo ezizimeleyo, kwaye kukho iindawo ezicacileyo ezingabonakaliyo ezimnyama phakathi kweepikseli.Fumana indlela yokuguqula indawo emnyama engakhanyisiyo ibe yindawo ekhanyayo, kwaye unciphise umahluko wokuqaqamba ngeepixels ezikhanyayo ezizimeleyo, ezinokunciphisa ngokwendalo okanye ziphelise imoire.
(5) Ngaba kukho indlela yokuguqula indawo emnyama engakhanyisiyo ibe yindawo ekhanyayo kumboniso we-LED?
I-COB yokupakisha inkqubo yokubonisa i-LED, kulula ukwenza oku.Ukuba sinethuba lokubeka umboniso we-LED we-COB kunye nomboniso we-LED we-SMD, sinokufumanisa lula ukuba: Umboniso we-LED we-COB ukhupha ukukhanya okuthambileyo njengomthombo wokukhanya komhlaba, ngelixa umboniso we-LED we-SMD ngokucacileyo uvakalelwa kukuba amasuntswana akhanyayo ngamanqaku azimeleyo akhanyayo.Inokubonwa kuMfanekiso 3 ukuba indlela yokutywinwa yokupakishwa kweCOB yahluke kakhulu kuleyo ye-SMD.Indlela yokutywina yokupakishwa kwe-COB ngummandla okhupha ukukhanya ngokubanzi kweepikseli ezininzi ezikhupha ukukhanya kunye.Indlela yokutywina yokupakishwa kwe-SMD yiphikseli enye ekhanyayo, eyindawo ekhanyayo ezimeleyo.
I-MPLED inokukunika umboniso we-LED wenkqubo yokupakisha ye-COB, kwaye iimveliso zethu ze-ST Pro zinokubonelela ngezisombululo ezinjalo.Isikrini somboniso we-LED esigqitywe yinkqubo yokupakishwa kwe-cob sinesithuba esincinci, esicacileyo kunye nomfanekiso obuthathaka ngakumbi.I-chip ekhupha ukukhanya ipakishwe ngokuthe ngqo kwibhodi ye-PCB, kwaye ubushushu buchithwa ngokuthe ngqo ngebhodi.Ixabiso lokumelana ne-thermal lincinci, kwaye ukutshatyalaliswa kobushushu kunamandla.Isibane esingaphezulu sikhupha ukukhanya.Imbonakalo engcono.
Isiphelo: Indlela yokuphelisa okanye ukunciphisa i-moire kwisiboniso se-LED?
1. Lungisa i-angle yokudubula ikhamera, indawo, ukusetwa kwengqwalasela kunye nobude be-lens.
2. Sebenzisa ikhamera yefilimu yemveli, ikhamera yedijithali enenzwa ye-spatial frequency frequency, okanye ikhamera yedijithali ene-low-pass filter.
3. Isikrini sokubonisa i-LED kwifom yokupakisha ye-COB ikhethiwe.
Ixesha lokuposa: Nov-04-2022
