Iyini Inkomba Yokunikeza Umbala (CRI)?
Inkomba yokunikeza umbala yomthombo wokukhanya ibhekisela kupharamitha yekhono lomthombo wokukhanya lokubuyisela umbala wento.. Isetshenziselwa kakhulu ukuchaza umehluko wombala womthombo wokukhanya we-LED. Amaphuzu ale nkomba ngu 0-100.
Ukukubeka kalula: ukunikezwa kombala kuyisici esibalulekile sokuhlola ikhwalithi yokukhanyisa, futhi inkomba yokunikeza umbala iyindlela ebalulekile yokuhlola ukunikezwa kombala kwemithombo yokukhanya, futhi iyipharamitha ebalulekile yokukala izici zombala wemithombo yokukhanya yokwenziwa. Umbala ungcono, kunamandla amandla okubuyisela umbala wento.
Ikhomishini Yezizwe Ngezizwe Yokukhanyisa (I-CIE) ichaza ukunikezwa kombala ngokuthi: umthelela womthombo wokukhanya ekubukekeni kombala wento uma kuqhathaniswa nomthombo wokukhanya oyisithenjwa ojwayelekile.
Inkomba evamile yokunikeza umbala: enkulu iRa, ngcono ukusebenza kokunikeza umbala; kungenjalo, kubi kakhulu ukusebenza kokunikeza umbala. Inkomba yokunikeza umbala yokukhanya kwelanga ichazwa ngokuthi 100.
Nakuba "inkomba yokunikeza umbala" alimeleli sonke isibani. Kodwa "Inani eliphakeme kakhulu lama-CRI" inganquma kakhulu umphumela wokukhanyisa - ukukhiqizwa kombala okuphezulu.
Njengoba kuboniswe emfanekisweni ongezansi: umthombo wokukhanya onenkomba yenkomba (Ra)>90 inamandla kunomthombo wokukhanya onenkomba yenkomba (Ra)<80 ukwethula umbala oyinhloko wemvelo wento, futhi ikhululekile ngokubonakalayo.
Ikhomishini Yezizwe Ngezizwe Yokukhanyisa (I-CIE) isetha inkomba yokunikeza umbala yokukhanya kwelanga njenge 100, futhi iyasho 15 imibala yokuhlola, futhi isebenzisa u-R1-R15 ukumela izinkomba zalezi 15 imibala. Uma uqhathanisa umthombo wokukhanya nomthombo wokukhanya oshiwo, inani lenkomba ye 100 kungcono kakhulu.
Sengisho nje, U-Ra ubhekisela enanini elimaphakathi lomthombo wokukhanya wamazinga ayisishiyagalombili okukhiqiza imibala yemvelo engu-R1-R8, kanti u-R9-R15 awubalwa. Kodwa ngokombono wochwepheshe ukuhlola i-CRI yomthombo wokukhanya, kufanele ucabangele amapharamitha angu-R9 (ukuncishiswa okubomvu) kanye no-R15 (ukusebenza kombala wesikhumba sase-Asia).
Njengoba isibani se-LED sikhiqizwa i-chip eluhlaza okwesibhakabhaka ukujabulisa i-phosphor ephuzi ukukhiqiza ukukhanya okumhlophe, liyashoda ngokwedlulele ebhendini ebomvu, okuholela ekutheni ilambu le-LED lingabi namandla okubonisa abomvu. Uma sikhetha izibani ze-LED, akufanele sibheke kuphela inkomba yokunikeza umbala u-Ra, kodwa futhi amanani ka-R9 no-R15. Kunconywa ukuthi uRa>90 (R9>50, R15>90) zikhonjiswe izinkomba zokukhanyisa ezijwayelekile.
Umehluko kunkomba yokunikeza umbala:
90-100 Izindawo ezidinga ukugqama kombala okunembile, njengezibani zasemnyuziyamu;
80-89 Izindawo lapho kudingeka khona isinqumo esifanele sombala;
60-79 Izindawo ezidinga ukunikezwa kombala omaphakathi;
40-59 izindawo ezinezidingo eziphansi zokunikezwa kombala kanye nomehluko omncane wombala;
20-39 Izindawo ezingenazo izimfuneko ezithile zokunikezwa kombala.
Emklamo wokukhanyisa ekhaya, ukwakha isimo esinempilo nesikahle, kubaluleke kakhulu ukukhetha umthombo wokukhanya olungile nezibani. Ukuze wenze ukukhanya kubonise ibala labantu kangcono empilweni, futhi umbala wokudla nezithelo ungokoqobo, lapho ukhetha izibani, kuyadingeka ukukhetha inkomba ephezulu yokubonisa, okungcono, leyo, Inani eliphakeme kakhulu lama-RA (R9, R15) kumele kube phezulu.
Izinga likazwelonke libeka ukuthi inkomba encane yokunikeza umbala i-RA yezinto zokukhanyisa zasendlini ingu 80. Nokho, ULuo Hualu, umklami wokukhanyisa we-Mizhi Space, wabonisa ukuthi kusukela esimisweni sokusebenzisa ukukhanya ngendlela enempilo, sidinga ukuthi i-RA ibe nkulu kune 90 lapho uklama ukukhanyisa kanye nemikhiqizo ehambisanayo. Ukukhanya okungcono kakhulu ukukhanya kwemvelo, futhi inkomba yayo yokunikeza umbala ichazwa ngokuthi 100. Okwamanje, izibani ezinhle kakhulu nezibani emhlabeni zingasondela ngokungenamkhawulo kuphela 100.
Izingozi zenkomba yokunikeza enombala ophansi
I "Amazinga Enhlanzeko Okukhanyisa Nokukhanyisa Emakilasini Ezikole Zamabanga Aphansi Nasesekondari" waveza ukuthi inkomba yokunikeza umbala yemithombo yokukhanyisa ekilasini akufanele ibe ngaphansi 80. Inkomba yokunikeza umbala yokukhanya kwekilasi okuphansi kakhulu kuthinta ukubonwa kwabafundi kombala wento ngamehlo, ukuze into ingakwazi ukukhombisa umbala wayo wangempela. Uma lesi simo siqhubeka, kuzoholela ekwehleni nasekunciphiseni ikhono lokubandlulula ngemibala, okuholela ekuphuphuthekeni kombala nombala obuthakathaka wabafundi nezinye izinkinga ezinkulu zokubona kanye nezifo zamehlo.
I-Optometry iqinisekise ngokuphindaphindiwe into eyodwa, ukukhanya kwemvelo kungavimbela i-myopia. Ngokombono wokuvikela ukubona, kuyisinqumo esifanele ukukhetha izibani eziphezulu, ikakhulukazi izibani zedeski zezingane. Izinto ezifana nezincwadi zezingane namathoyizi zinemibalabala. Uma ukhetha isibani sedeski ne-CRI ephansi, umbala oboniswa emuva emehlweni ezingane uzolahlekelwa ukugcwala, okuholela ekuhlanekeni kombala, kulula ukubangela ukukhathala okubukwayo, futhi kungase kuholele ku-myopia.
Ngakho-ke, ukukhetha izibani ezine-CRI ephezulu ngokuvamile kuhle ekuboneni ukukhanya nokubona.
Isifinyezo: Kungani ukhetha Inkomba Ebalulekile Ephakeme?
1. Ukukhiqizwa kombala okuphezulu: ukugcwala kombala okuphezulu.
2. Vimbela i-myopia.
3. Ukuze uhlangabezane nezidingo zabasebenzisi.
Xazulula izinhlungu zabasebenzisi: izinto azizona ezangempela ngaphansi kokukhanya, nokuvikela amehlo ezingane.
