Fiiri diopter-ka isha, dooro muraayado si fiican loogu talagalay, dad badan ayaa yeelan doona su'aalo: noocyo badan, noocyo, muraayado shaqeynaya, oo aniga igu habboon?Ma "Aniga waxaan sameeyaa wax aniga ii gaar ah" , "wadnaheyga raac" , ama "Google Search" ?
Astaanta Lens, filim kala duwan, index refractive, hawlaha kala duwan, saamaynta indhaha kala duwan iyo arrimo kale, waxaa jiri doona daraasiin ama xataa boqolaal nooc oo lens, dadku waa ka labalabeyn.
Haddaba, aan si kooban uga hadalno muraayadaha indhaha ee aadka loo isticmaalo.Marka laga eego dhinaca codsiga, waxaa jira muraayado hal iftiin ah iyo muraayado shaqeynaya.
Lens-kaliya: Hal lens macnaheedu waa in uu jiro hal xarun indho-indheyn oo kaliya, xarunta indhaha waxa loo sameeyay in ay u dhigmato gobolka ardaygaaga (taasi waa sababta masaafada ardayga loo cabbiro) .
Lenses-ka-iftiinka ah ayaa qiyaas ahaan loo qaybiyaa goobo wareegsan, aspherical, biaspherical iyo qaab bilaash ah Lenses, oogada qaabka xorta ah ayaa hadda ah kuwa ugu fiican marka la eego dhimista aberrations iyo qallooca, laakiin sidoo kale wax yar ayay ka qaalisan yihiin muraayadaha kale.Markaad dooratid, waa inaad raacdaa iftiinka isha iyo heerka astigmatism si aad u doorato.
Lens-ka Kelida ah ayaa ah midka ugu aasaasiga ah ee ugu fudud ee loogu talagalay kuwa leh awoodda hagaajinta ku filan, taas oo ah, kuwa aan haysan Presbyopia.Laakin dadka bilaabay inay yeeshaan PRESBYOPIA, lenses monocular waxa loo isticmaali karaa oo kaliya masaafo go'an, ama fogaan (wadidda) , labadaba maaha.Haddaba maxaan samaynaa hadda?Mid ka mid ah Xalka: muraayado masaafo ah, iyo kan kale: muraayadaha multifocal horumarka.
Lenses functional: oo ay ku jiraan lenses anti-daalka, lenses bifocal, horusocod multifocal lenses, muraayadaha carruurta si ay u yareeyaan horumarinta Myopia (peripheral defocus lenses, bifocal + priism lenses) iyo wixii la mid ah.
Lenses functional waxay leeyihiin wax badan, sida loo doorto, mid waa in la arko baahidayada muraayadaha, laba waa ujeedada muraayadaha.Qaado lenses multifocal horusocod ah, kuwaas oo ah muraayado shaqaynaya oo loogu talagalay inay daboolaan baahiyaha dadka aragtida fog iyo kuwa dhowba.Tusaale ahaan, macalinku waxa laga yaabaa inuu u baahdo inuu eego sabuuradda marka uu la xidhiidhinayo ardayda fasalka dhexdiisa (oo eegaya masaafada) iyo qorshaha casharka (iyaga oo eegaya isticmaalka dhow) .Ama shirka waaxdu wuxuu u baahan karaa in la eego boggaga iyo kumbuyuutarka, sidoo kale wuxuu u baahan yahay in fiiro gaar ah loo yeesho odhaahyada ka qaybgalayaasha, muraayado badan oo diiradda saaraya doorka weyn.
Waxa la odhan karaa laba muraayadood oo horusocod ah ayaa xalin kara dhibaatada ah in si fiican wax looga arki karo masaafo kala duwan, mana ka duwana muraayadda lens-ka ah ee muuqaalka ah, iyada oo indhaheenna "barafaysan" , laakiin indhaha iyo muraayadaha isbarbar-dhigga ayaa ah. ma fududa sida hal muraayad.
1. Si sax ah u cabbir iftiinka fog.
2, marka loo eego da'da, dabeecadda fogaanta shaqada ee dhow, booska isha, falcelinta hagaajinta, hagaajinta qaraabada togan iyo taban, iwm.Oo dooro kanaalka ku habboon (taas oo ah, dhererka aagga kala-guurka ee u dhexeeya aagagga iftiinka fog iyo kuwa u dhow ee Lens) si loo daboolo baahiyaha shaqo maalmeedka.
3. Hagaajinta qaabka shakhsi ahaaneed.Marka loo eego dhererka buundada sanka ee qof kasta, dhererka dhegaha iyo wixii la mid ah ee qaabka dugsiga, si ay muraayadaha u xidhaan raaxo.
4. Cabbirka fogaanta ardayga.Masaafada u dhaxaysa indhaha dhow iyo kuwa fog, dhererka ardayga ee jihada toosan ee jirku, iyo calaamada ku taal qaabka la doortay waa in la cabbiraa.Si loo helo saameyn muuqaal ah oo loo yareeyo faragelinta aagga Aberration ee aragga marka la gashado lenses horusocod ah, meelaha fog iyo kuwa dhow ee iftiinka waxay ku yaalaan aagga u dhigma ee ardayga.
5. Cabirro badan ayaa loo baahan yahay si loo naqshadeeyo muraayadaha horumarka leh ee raaxada leh: Fogaanta Indhaha (masaafada u jirta dusha sare ee isha ilaa Lens-ka), qallooca fareemka, xagasha foorarsiga ee fareeshka, qaabka iyo cabbirka fareeshka. iwm .. Marka loo eego saamiga dhaqdhaqaaqa madaxa iyo dhaqdhaqaaqa indhaha, waxaanu dooranaa nooca ku habboon, kaas oo yareyn kara saameynta aagga aberration ee labada dhinac ee Lens, gaabin xilliga la qabsiga, oo ka dhigaya xirashada mid raaxo leh.
Sidaa darteed, doorashada Lens waa in aan diiradda la saarin astaanta ama qiimaha, ma aha muraayadda qaaliga ah ee ka sii fiican, si indho la'aan ah uma dooran.Dhakhaatiirta indhaha ayaa kugula talinaya inaad doorato muraayadaha indhaha iyagoo ku eegaya duruufahooda, baahida indhaha iyo talada dhakhaatiirta indhaha si ay u doortaan muraayadda saxda ah ee tooda.
Waqtiga boostada: Jul-28-2021