Yiziphi izinzuzo zokukhanya kwesibonisi se-LED?Njengendlela yokukhangisa, izikrini zokubonisa ze-LED zivame ukuvela ezimpilweni zethu, futhi isidingo solwazi lokuhlonza ukulungiswa okuhlobene nezikrini zokubonisa ze-LED sikhulile.Ake sixoxe ngokuthi singakuhlonza kanjani ukukhanya kwesibonisi se-LED.
Okokuqala, ake siqonde ukuthi kuyini ukukhanya kwesibonisi se-LED:
Ukukhanya kweshubhu le-LED elikhipha ukukhanya kubhekisela ekushubeni kokukhanya okukhishwa umzimba okhanyayo, okubizwa ngokuthi amandla okukhanya, okuvezwa nge-MCD.Ukukhanya okukhanyayo kwesibonisi se-LED kuyinkomba ebanzi, ebhekisela kunkomba ebanzi yengqikithi yokukhanya okukhanyayo (i-luminous flux) yawo wonke amamojula e-LED ngevolumu yeyunithi kanye nokukhanya ebangeni elithile.
Ukukhanya kwesibonisi se-LED: Kundawo enikeziwe, amandla okukhanya endaweni yeyunithi ngayinye.Iyunithi yokukhanya yi-cd/m2.
Ukukhanya kuhambisana nenani lama-LED endaweni ngayinye kanye nokukhanya kwe-LED ngokwayo.Ukukhanya kwe-LED kuhambisana ngokuqondile nedrayivu yayo yamanje, kodwa isikhathi sayo sokuphila silingana ngokuphambene nesikwele samanje, ngakho-ke idrayivu yamanje ayikwazi ukukhushulwa ngokweqile ekufuneni ukukhanya.Ngesikhathi esifanayo ukuminyana, ukukhanya kwesibonisi se-LED kuncike kokubalulekile, ukupakishwa nosayizi we-chip ye-LED esetshenzisiwe.Uma i-chip inkulu, ukukhanya kuyanda;ngokuphambene, ukukhanya kuphansi.
Ngakho-ke yiziphi izimfuneko zokukhanya zokukhanya kwe-ambient kwesikrini?
Izidingo zokukhanya ezijwayelekile zimi kanje:
(1) Isibonisi se-LED yasendlini: >800CD/M2
(2) Isibonisi se-LED esingaphakathi endlini: >2000CD/M2
(3) Isibonisi se-LED sangaphandle (hlala eningizimu futhi ubheke enyakatho): >4000CD/M2
(4) Isibonisi se-LED sangaphandle (hlala enyakatho futhi ubheke eningizimu): >8000CD/M2
Izinga lamashubhu akhanyayo e-LED athengiswa emakethe alilingani, futhi ukukhanya okuningi akunakuqinisekiswa.Abathengi bakhohliswa ukwenzeka kwe-shoddy.Abantu abaningi abanalo ikhono lokuhlukanisa ukukhanya kwamashubhu akhanyayo e-LED.Ngakho-ke, abathengisi bathi ukukhanya kuyefana nokukhanya.Futhi kunzima ukuyihlukanisa ngamehlo anqunu, ngakho-ke ungayikhomba kanjani?
1. Ungakuhlonza kanjani ukukhanya kwesibonisi se-LED
1. Yenza ugesi we-3V DC okulula ukuwuxhuma ku-diode ekhipha ukukhanya uwedwa.Kungcono ukusebenzisa ibhethri ukuwenza.Ungasebenzisa amabhethri wezinkinobho ezimbili, uwafake eshubhuni elincane lepulasitiki bese uhola ama-probe amabili njengokuphumayo okuhle nokubi.Ukuphela komsila kwenziwa ngokuqondile ekushintsheni nge-shrapnel.Uma isetshenziswa, ama-probe avumayo kanye nenegethivu ahambisana nokuthintwayo okuhle nokubi kwe-diode ekhipha ukukhanya.Kuphinikhodi enegethivu, cindezela futhi ubambe iswishi ekugcineni, futhi ishubhu elikhanyayo lizokhipha ukukhanya.
2. Okwesibili, hlanganisa i-photoresistor kanye ne-multimeter yedijithali ukuze wenze idivayisi elula yokulinganisa ukukhanya.Hola i-photoresistor ngezintambo ezimbili ezincane futhi uzixhume ngqo kumapeni amabili we-multimeter yedijithali.I-multimeter ibekwe endaweni engu-20K (kuye ngokuthi i-photoresistor, Zama ukwenza ukufundwa kunembile ngangokunokwenzeka).Qaphela ukuthi inani elilinganisiwe empeleni inani lokumelana le-photoresistor.Ngakho-ke, ukukhanya okukhanyayo, inani elincane.
3. Thatha i-LED ekhipha ukukhanya futhi usebenzise i-3V yamanje eqondile engenhla ukuze uyikhanyise.Ikhanda elikhipha ukukhanya libheke futhi liseduze nendawo ezwelayo ye-photoresistor exhunyiwe.Ngalesi sikhathi, i-multimeter ifundeka ukuhlukanisa ukukhanya kwe-LED.
2. Izinga lokucwasa ngokugqama libhekisela ezingeni lokukhanya kwesithombe esingahlukaniswa ngeso lomuntu kusukela kokumnyama kakhulu kuye kwelimhlophe kakhulu.
Izinga elimpunga lesikrini sokubonisa se-LED liphezulu kakhulu, elingafinyelela ku-256 noma ngisho ku-1024. Nokho, ngenxa yokuzwela okulinganiselwe kwamehlo omuntu ekukhanyeni, lawa mazinga ampunga awakwazi ukubonakala ngokugcwele.Ngamanye amazwi, kungenzeka ukuthi amazinga amaningi aseduze esikali esimpunga samehlo omuntu abukeka ngokufanayo.Ngaphezu kwalokho, ikhono lokuhlukanisa amehlo liyahlukahluka kumuntu nomuntu.Ezikrinini zokubonisa ze-LED, izinga lokuqashelwa kwamehlo omuntu liphakeme, lingcono, ngoba isithombe esibonisiwe ngesokuthi abantu basibone.Amaleveli okukhanya engeziwe iso lomuntu elingakwazi ukuwahlukanisa, sikhulu isikhala sombala sesibonisi se-LED, makhulu amathuba okubonisa imibala ecebile.Izinga lokubandlulula kokukhanya lingahlolwa ngesofthiwe ekhethekile.Ngokuvamile, isikrini sokubonisa singafinyelela izinga lama-20 noma ngaphezulu, ngisho noma kuyizinga elihle.
3. Izidingo zokukhanya ne-engeli yokubuka:
Ukukhanya kwesibonisi se-LED sasendlini kufanele kube ngaphezu kuka-800cd/m2, futhi ukukhanya kwesibonisi esingaphandle esinombala ogcwele kufanele kube ngaphezu kuka-1500cd/m2 ukuze kuqinisekiswe ukusebenza okuvamile kwesibonisi se-LED, ngaphandle kwalokho isithombe esibonisiwe ngeke sicace ngoba ukukhanya kuphansi kakhulu.Ukukhanya kunqunywa ikakhulukazi ikhwalithi ye-LED die.Usayizi we-engeli yokubuka unquma ngokuqondile izethameli zesibonisi se-LED, ngakho okukhudlwana kuba ngcono.I-engeli yokubuka inqunywa ngokuyinhloko iphakheji le-die.