Muraayadaha muraayadaha ayaa saxa khaladaadka dib-u-celinta iyagoo foorarsanaya (dib u celinaya) iftiinka marka ay dhex maraan muraayadda. Qadarka awoodda leexinta iftiinka (awoodda muraayadda) ee loo baahan yahay si loo helo aragti wanaagsan ayaa lagu muujiyay warqadda daawada ee uu bixiyo dhakhtarkaaga indhaha.
Khaladaadka dib-u-celinta iyo awoodda muraayadaha ee loo baahan yahay si loo saxo waxa lagu cabbiraa unugyo loo yaqaanno dioptres (D). Haddii aad tahay mid yar oo aragti gaaban, dawada muraayadaada ayaa laga yaabaa inay sheegto -2.00 D. Haddii aad tahay qof maan-yaqaan ah, waxay odhan kartaa -8.00 D.
Haddii aad aragti dheer tahay, waxaad u baahan tahay muraayadaha "plus" (+), kuwaas oo ka dhumuc weyn bartamaha iyo dhuuban cidhifka.
Muraayadaha caadiga ah ama muraayadaha caaga ah ee xaddi badan oo aragti gaaban ama aragti dheer waxay noqon kartaa mid dhumuc weyn leh oo culus.
Nasiib wanaag, wax-soo-saarayaashu waxay abuureen noocyo kala duwan oo cusub oo "high-index" ah oo leh qalab muraayad caag ah oo si hufan u leexiya iftiinka.
Tani waxay ka dhigan tahay wax yar ayaa loo isticmaali karaa lenses-index sare si loo saxo isla qadarka qaladka refractive, kaas oo ka dhigaya muraayadaha caagga ah ee sare ee dhuuban oo ka fudud muraayadaha caadiga ah ama caaga ah.
Faa'iidooyinka lenses-index sare
Ka khafiifsan
Sababtoo ah awoodda ay u leeyihiin in ay si hufan u leexiyaan iftiinka, muraayadaha-index sare ee aragti-gaabni waxay leeyihiin geeso khafiif ah marka loo eego muraayadaha leh awood isku mid ah oo ka samaysan caag caadi ah.
Fudud
Cidhifyada khafiifka ah waxay u baahan yihiin wax yar oo muraayad ah, taas oo yaraynaysa miisaanka guud ee muraayadaha. Lenses ka samaysan caag heer sare ah ayaa ka fudud isla muraayadaha laga sameeyay balaastiiggii caadiga ahaa, markaa way ku raaxaystaan in la xidho.
Inta badan muraayadaha-index-ka-sare sidoo kale waxay leeyihiin naqshad aspheric ah, kaas oo siinaya muuqaal khafiif ah, muuqaal soo jiidasho leh oo yareynaya muuqaalka weyn ee muraayadaha caadiga ah ay keenaan warqado adag oo aragti dheer.
Xulashada muraayadaha-index-ka sare
Muraayadaha caagga ah ee index-sare ayaa hadda lagu heli karaa noocyo kala duwan oo tusmooyinka wax-soo-celinta ah, oo caadi ahaan u dhexeeya 1.60 ilaa 1.74. Muraayadaha leh index refractive of 1.60 & 1.67 waxay noqon karaan ugu yaraan boqolkiiba 20 ka khafiifsan muraayadaha caaga ah ee caadiga ah, iyo 1.71 ama ka sareeya caadi ahaan waxay noqon karaan qiyaastii 50 boqolkiiba khafiif ah.
Sidoo kale, guud ahaan marka la hadlo, indexku wuu sarreeyaa, waa sarreeyaa kharashka muraayadaha.
Dawadaada muraayadda ayaa sidoo kale go'aamisa nooca shay-index-ka sare ee aad u rabto muraayadaada. Qalabka tusmada ugu sarreeya ayaa ugu horreyn loo isticmaalaa daawoyinka ugu xooggan.
Inta badan nashqadaha muraayadaha caanka ah ee maanta iyo sifooyinka - oo ay ku jiraan Dual Aspheric, Progressive, Bluecut Pro, Qorista madmadow, iyo muraayadaha muraayadaha sawir-qaadista ee casriga ah - ayaa lagu heli karaa qalab sare-sare. Ku soo dhawoow inaad gujiso boggayagahttps://www.universeoptical.com/armor-revolution-product/si aad u hubiso tafaasiil dheeri ah