Emkhakheni wokusungula izinto ezintsha, ukwakheka kwelensi kuhlukaniswe kakhulu ngezinhlobo ezimbili: okuyindilinga kanye ne-aspheric. Amalensi e-aspheric, aqhutshwa ukuphishekela ukuba mncane, adinga ukuguqulwa kokugoba kwelensi, okuhluka kakhulu ekugobeni kobuso belensi eyindilinga yendabuko. Ukwakheka okuyindilinga, okwakuvame kakhulu ngaphambili, kwakuhlushwa ukuphambuka okukhulu kanye nokuhlanekezela. Lokhu kwakuvame ukuholela ezinkingeni ezivelele njengezithombe ezifiphele, umbono ophambene, kanye nensimu yokubuka elinganiselwe.
Manje, ukwakheka kwe-aspheric sekuvele njengamandla okulungisa, kulungisa lokhu kuphazamiseka kokubona ngempumelelo futhi kuhlinzeka ngesisombululo esihlinzeka ngamalensi angagcini nje ngokuba alula futhi acwebezelayo kodwa futhi acwebezelayo ngokulinganayo. Okubalulekile, lokhu kuthuthuka akubeki engcupheni ukumelana okuphawulekayo kwamalensi okuthintekayo, okuqinisekisa isipiliyoni sokugqokwa okuphephile.
Amalensi endabuko ayindilinga anephutha eliphawulekayo - izinto ezibukwa emngceleni webhulensi zibonakala ziphambene, zinciphisa umbono womuntu ogqokile. Esikhathini lapho ubuchwepheshe buqhubeka bushintsha, amalensi anjenge-aspheric - isimangaliso sangempela sokubona - anciphisa ukuphazamiseka emaphethelweni webhulensi, andisa kakhulu insimu yombono ukuze kuhlangatshezwane nezidingo zamakhasimende. Amalensi e-aspheric anesigobe esiyisisekelo esithambile futhi alula, athuthukisa ukukhanga kwemvelo nobuhle. Ikakhulukazi ezimweni zamandla aphezulu okubuka, anciphisa ngobuhlakani ukuphazamiseka kwamehlo, okwenza kube ukukhetha okuhle kwabathengi abanezidingo eziphezulu zemithi kadokotela.
Isici esiyinhloko samalensi anombala okhanyayo yi-spheric surface curve yayo eyingqayizivele. Lo mklamo onombala okhanyayo unikeza izinzuzo eziningana ngaphezu kwamalensi avamile anombala okhanyayo:
1. Ukucaca: Uma iphathwa ngenqubo ekhethekile yokumboza, amalensi e-aspheric ahlinzeka ngokusebenza okubonakalayo okuyisibonelo, okuqinisekisa isipiliyoni sokubuka esicacile nesikhululekile.
2. Induduzo: Ilula kakhulu kangangokuthi cishe ayibonakali, amalensi e-aspheric anciphisa 'isisindo' emehlweni akho, okuvumela ukuthi ugqoke kahle futhi kalula.
3. Umbono Wemvelo: Ukwakheka kwazo okungabonakali kunciphisa ukuphambuka kokubona, okuholela ekuboneni okungokoqobo nokunembile.
Uma kuqhathaniswa amalensi ayindilinga nayi-aspheric ezinto ezifanayo kanye nemithi kadokotela, amalensi a-aspheric avelele njengathambile, amancane, futhi ahlinzeka ngolwazi lokubuka olungokoqobo nolukhululekile. Ukubuka isimo sokumboza kwelensi ngokumelene nomthombo wokukhanya kwembula ukuthi ukubonakaliswa kwamalensi ayindilinga ngokuvamile kuqondile (ngaphandle kwamalensi anamandla aphezulu okubuka); amalensi a-aspheric, nokho, abonisa ukugoba okukhulu ngenxa yokugoba okuhlukahlukene ebusweni bawo.
Amaphethelo angaphandle kwamalensi ajwayelekile ayindilinga awabonakali nje kuphela emakhulu kodwa futhi aguqula futhi aguqule umbono wezinto, into eyaziwa ngokuthi ukuphambuka kwesithombe. Ukuze kufezwe umklamo olula, izinto ezibonisa ukugqama okuphezulu ziye zasetshenziswa ekukhiqizeni amalensi. Ngaphezu kwalokho, uma kubhekwa ngamalensi ayindilinga, ukuma kobuso bomuntu ogqokile kuyaphambuka ngokuphawulekayo. Amalensi e-Aspheric, ngokuphambene, anciphisa kokubili ubukhulu obuphakathi nobomphetho, okuholela kulensi encane eqeda ukuphambuka kwangaphandle, ngaleyo ndlela inikeze isipiliyoni sokubona semvelo.
Amalensi e-Aspheric anikeza insimu yombono ebanzi nengagobile emaphethelweni, enokuguquguquka okuncane kwesithombe, okwenza izithombe zibe zemvelo kakhulu. Lawa malensi aqine ngokuphindwe kathathu kunalawo ayisiyingi, okwenza afaneleke kakhulu kwabagqokile abasebasha. Ngomuthi ofanayo we--5.00DS, amalensi e-aspheric alula ngo-26% kunamalensi ayindilinga. Ubuso bawo obuyisicaba buqinisekisa umbono wemvelo, ongaphambuki womhlaba, kokubili eduze nakude, okunciphisa ukukhathala kwamehlo isikhathi eside.
Amalensi e-aspheric afanele abantu abagqoka izibuko zamehlo okokuqala, ikakhulukazi abafundi kanye nezisebenzi zasehhovisi, anciphisa kakhulu ukungakhululeki kokuqala okuhlobene nokugqoka izibuko. Aphinde abe yindlela enhle kakhulu yokusebenzisa amalensi okuxhumana, esebenza njengezibuko zokusekela ekhaya. Amalensi e-aspheric alingisa kakhulu umbono wemvelo, ngokufana nokuhlangenwe nakho ngamalensi okuxhumana. Aphelele kulabo abathanda ukwehlisa ikhwalithi yemithi yabo, abafisa ukugwema ukubonakala kwamehlo amancane anezibuko ze-myopia, abafuna ukunciphisa isisindo samalensi abo, noma abanezidingo ezahlukene zokubona iso ngalinye.
Amalensi e-Aspheric anganikeza amalensi e-medium refractive index ukubukeka okufana nokuncane nokuyisicaba njengamalensi e-high refractive index, anciphise ukuphazamiseka komphetho futhi ahlinzeke ngensimu ebanzi yombono eyanelisa zonke izidingo zamakhasimende.
Isikhathi sokuthunyelwe: Jan-04-2024