Uma isikrini sokubonisa se-LED sisetshenziswa egumbini lokulawula, isitudiyo se-TV nakwezinye izindawo, kwesinye isikhathi kungabangela ukuphazamiseka kwe-moire esithombeni sekhamera.Leli phepha lethula izimbangela nezisombululo ze-moire, futhi ligxile endleleni yokukhetha isikrini sokubonisa se-LED ukuze unciphise noma uqede i-moire.
1.I-moire yaba khona kanjani?
2.Indlela yokuqeda noma ukunciphisa i-moire?
3.Ungashintsha kanjani uhlaka lwegridi ye-CCD yekhamera nesibonisi se-LED?
4.Ungashintsha kanjani inani elihlobene le-CCD yekhamera kanye nesakhiwo segridi yokubonisa i-LED?
5.Ingabe ikhona indlela yokuguqula indawo emnyama engakhanyi ibe yindawo ekhanyayo kusibonisi se-LED?
Uma uthatha izithombe esikrinini sokubonisa i-elekthronikhi se-LED sisebenza, kuzovela imithende eyinqaba namaribholi angajwayelekile.Lawa ma-ripples abizwa ngokuthi ama-moire fringes noma imiphumela ye-moire.Umphumela we-Moire umbono obonakalayo.Uma iqoqo lemigqa noma amaphuzu libonakala libekwe phezulu kwelinye iqoqo lemigqa noma amaphuzu, le migqa noma amaphuzu ahlukile ngosayizi, i-engeli noma isikhala.
Umthelela omkhulu womphumela we-Moore ithelevishini nekhamera.Uma ukukhanya phakathi kwamaphikseli esikrini sokubonisa i-elekthronikhi ye-LED kungalingani, ikhwalithi yesithombe esikrinini sokubonisa i-elekthronikhi ye-LED izothinteka futhi ukuxhopha kuzobangelwa uma isikrini sokubonisa sibukwa eduze.Lokhu kubangela inselele enkulu ekukhiqizeni izitudiyo ze-TV nezinye izinto zevidiyo.
(1) Yavela kanjani i-moire?
U-Moire:
Uma amaphethini amabili anemvamisa yendawo egqagqene, enye iphethini entsha ivamise ukukhiqizwa, evamise ukubizwa ngephethini ye-moire (njengoba kukhonjisiwe kuMfanekiso 2).
Isikrini sokubonisa se-LED sendabuko sihlelwa ngamaphikseli akhanyayo azimele, futhi kunezindawo ezisobala ezingezona ezikhanyayo ezimnyama phakathi kwamaphikseli.Ngesikhathi esifanayo, into ebucayi yekhamera yedijithali nayo inendawo yokuzwa ukukhanya ebuthakathaka lapho izwa ukukhanya.Uma ukuboniswa kwedijithali nokuthwebula kwedijithali kukhona ngesikhathi esifanayo, iphethini ye-moire iyazalwa.
Njengoba i-CCD (inzwa yesithombe) indawo eqondiwe (indawo ye-photosensitive) yekhamera ifana nesibalo esiphakathi koMfanekiso 2, kuyilapho isikrini sokubonisa se-LED sendabuko sifana nesithombe esingakwesokunxele soMfanekiso 2. Sakhiwe. yamashubhu akhipha ukukhanya kwe-lattice ahlelwe ngendlela engaguquki.Sonke isikrini sokubonisa sinendawo enkulu engakhanyi, eyenza igridi njengephethini.Ukugqagqana kwalokhu okubili kwakha iphethini ye-moire efana nohlangothi lwesokudla loMfanekiso 2.
(2) Indlela yokuqeda noma ukunciphisa i-moire?
Njengoba isakhiwo segridi yesibonisi se-LED sisebenzisana nesakhiwo segridi ye-CCD yekhamera ukuze kwakhe amaphethini e-moire, ukushintsha inani elihlobene kanye nesakhiwo segridi yesakhiwo segridi ye-CCD yekhamera kanye nesakhiwo segridi yesibonisi se-LED kungasusa noma kunciphise amaphethini e-moire ngokwembono.
(3) Ungasishintsha kanjani isakhiwo segridi ye-CCD yekhamera nesibonisi se-LED?
Enqubweni yokuqoshwa kwefilimu, ayikho i-pixel enokusabalalisa okuvamile, ngakho-ke ayikho imvamisa yendawo engaguquki futhi ayikho i-moire.
Ngakho-ke, i-moire phenomenon iyinkinga ebangelwa ukwenziwa kwedijithali kwekhamera ye-TV.Ukuze kuqedwe i-moire, ukulungiswa kwesithombe sesikrini sesibonisi se-LED esithathwe kulensi kufanele sibe ngaphansi kakhulu kunobuningi bendawo bento ebucayi.Uma lesi simo sihlangatshezwana naye, awekho ama-fringe afana nalawo enzwa angavela esithombeni, futhi ngaleyo ndlela akukho moire ezokhiqizwa.
Kwamanye amakhamera edijithali, isihlungi se-low-pass sifakwa ukuze kuhlungwe ingxenye ephezulu yefrikhwensi yendawo yesithombe ukuze kwehliswe i-moire, kodwa lokhu kuzonciphisa ukucaca kwesithombe.Amanye amakhamera edijithali asebenzisa izici zokuzwa imvamisa yendawo ephezulu.
(4) Ungalishintsha kanjani inani elihlobene le-CCD yekhamera nesakhiwo segridi yesibonisi se-LED?
1. Shintsha i-engeli yokudubula yekhamera.Ngokuzungezisa ikhamera nokushintsha kancane i-engeli yokudubula yekhamera, i-moire ripple ingaqedwa noma incishiswe.
2. Shintsha indawo yokuthwebula ikhamera.Ngokuhambisa ikhamera kwesokunxele nakwesokudla noma phezulu naphansi, ungakwazi ukuqeda noma ukunciphisa ripple imvukuzane.
3. Shintsha isethingi yokugxila kukhamera.Ukugxila kanye nemininingwane ephezulu ecace kakhulu emidwebeni enemininingwane ingase ibangele ukugeleza kwemvukuzane.Ukushintsha kancane isilungiselelo sokugxilisa ingqondo kungashintsha ukucaca, ngaleyo ndlela kusize ukuqeda ukugeleza kwemvukuzane.
4. Shintsha ubude bokugxila belensi.Amalensi ahlukene noma amasethingi obude obugxilile angasetshenziswa ukuqeda noma ukunciphisa i-molar ripple.
Isikrini sokubonisa se-LED sihlelwa ngamaphikseli akhanyayo azimele, futhi kunezindawo ezisobala ezingacwazi ezimnyama phakathi kwamaphikseli.Thola indlela yokuguqula indawo emnyama engacwazi ibe yindawo ekhanyayo, futhi unciphise umehluko wokukhanya ngamaphikseli akhanyayo azimele, anganciphisa ngokwemvelo noma aqede i-moire.
(5) Ingabe ikhona indlela yokuguqula indawo emnyama engakhanyi ibe yindawo ekhanyayo kusibonisi se-LED?
Inqubo yokupakisha ye-COB yesibonisi se-LED, kulula ukwenza lokhu.Uma sinethuba lokubeka isibonisi se-LED se-COB kanye nesibonisi se-LED se-SMD, singathola kalula ukuthi: isibonisi se-LED se-COB sikhipha ukukhanya okuthambile njengomthombo wokukhanya ongaphezulu, kuyilapho isibonisi se-LED se-SMD ngokusobala sinomuzwa wokuthi izinhlayiya ezikhanyayo zingamaphuzu akhanyayo azimele.Kungabonakala kuMfanekiso 3 ukuthi indlela yokuvala yokufaka i-COB ihluke kakhulu kuleyo ye-SMD.Indlela yokuvala yokupakishwa kwe-COB iyonke indawo ekhipha ukukhanya yamaphikseli amaningi akhipha ukukhanya ndawonye.Indlela yokuvala yokupakishwa kwe-SMD iyiphikseli eyodwa ekhanyayo, okuyiphoyinti elikhanyayo elizimele.
I-MPLED ingakunikeza ngokuboniswa kwe-LED kwenqubo yokupakisha ye-COB, futhi imikhiqizo yethu yochungechunge lwe-ST Pro inganikeza izixazululo ezinjalo.Isikrini sokubonisa se-LED esiqedwe inqubo yokupakishwa kwe-cob sinezikhala ezincane, isithombe esicacile nesithambile kakhulu.I-chip ekhipha ukukhanya ihlanganiswe ngokuqondile ebhodini le-PCB, futhi ukushisa kusakazwa ngokuqondile ebhodini.Inani lokumelana nokushisa lincane, futhi ukuchithwa kokushisa kunamandla.Ukukhanya okungaphezulu kukhipha ukukhanya.Ukubukeka okungcono.
Isiphetho: Ungasusa kanjani noma unciphise kanjani i-moire ekubonisweni kwe-LED?
1. Lungisa i-engeli yokudubula yekhamera, indawo, isilungiselelo sokugxila kanye nobude bokugxila belensi.
2. Sebenzisa ikhamera yefilimu evamile, ikhamera yedijithali enenzwa ephakeme ye-spatial frequency, noma ikhamera yedijithali enesihlungi se-low-pass.
3. Isikrini sokubonisa se-LED kufomu lokupakisha le-COB sikhethiwe.
Isikhathi sokuthumela: Nov-04-2022
