1.71 Hal aragga HMC ee muraayadaha indhaha
Faahfaahinta Wax-soo-saarka
Meesha Asal ahaan: | Jiangsu | Magaca Summada: | BORIS |
Nambarka Qaabka: | Lens Index Sare | Qalabka muraayadaha: | KR |
Saamaynta Aragga: | Aragti Keliya | Filimka Dahaarka: | HC/HMC/SHMC |
Midabka muraayadaha: | Cadaan (gudaha) | Midabka Dahaarka: | Cagaar/buluug |
Tusmada: | 1.71 | Cuf-jiid gaar ah: | 1.38 |
shahaado: | CE/ISO9001 | Abbe Value: | 37 |
Dhexroor: | 75/70/65mm | Naqshad: | Aspherical |
Tusmada lensku waxa ay tilmaamaysaa tusmada dib-u-soo-celinta (haddii kale loo yaqaan index refractive) ee walxaha muraayadda ee muraayadaha indhaha. Waa nambar qiyaaseed qaraabo ah oo qeexaya sida wax-ku-oolnimada leh ee walaxdu u leexiso iftiinka. Dib-u-soo-celinta iftiinka waxay ku xirnaan doontaa sida degdegga ah ee laftiisu u dhex maro muraayadda.
Agabka lens-ku waxa lagu kala saaray tusmahooda dib u soo celinta. Tilmaantan refractive-ka ah waa saamiga xawaaraha iftiinka marka uu hawada ku socdo illaa xawaaraha iftiinka marka uu dhex marayo walxaha muraayadda. Waa tilmaan muujinaysa inta iftiinku foorarsan yahay marka uu dhex socdo muraayadda. Iftiinku waa la jajabiyaa, ama foorarsan yahay, dusha hore ee lenska, ka dibna mar kale marka uu ka soo baxo muraayadda. Qalabka cufan ayaa si aad ah u leexiya iftiinka, sidaas darteed ma aha wax badan oo loo baahan yahay si loo gaaro saameyn isku mid ah oo la mid ah maadada cufan. Sidaa darteed muraayadda ayaa laga dhigi karaa mid khafiif ah, iyo sidoo kale khafiif ah.
Hordhac Wax-soo-saar
Muraayadaha muraayadaha indhaha ee caadiga ah, badhtamaha muraayadaha ayaa khafiif ah cidhifyada dibaddana waa dhumuc weyn yihiin si ay u fududeeyaan dib u soo noqoshada taas oo ah waxa ka dhigaya muraayadaha dhakhtarku inay shaqeeyaan! Muraayadaha tusmada sare waxay leeyihiin index sare oo dib-u-gurasho ah marka loo eego muraayadaha caadiga ah, taas oo macnaheedu yahay uma baahna inay noqdaan kuwo dhumuc weyn leh hareeraha geesaha si ay u noqdaan kuwo waxtar leh.
Muraayadaha index-sare waxay ka dhigan yihiin in muraayadda lafteedu ay noqon karto mid khafiif ah oo fudud labadaba. Tani waxay u oggolaanaysaa muraayadahaagu inay noqdaan kuwo moodada ah oo raaxo leh intii suurtagal ah. Lenses-index-ka sare ayaa si gaar ah faa'iido u leh haddii aad haysato warqad xoog leh oo muraayad indhaha ah oo loogu talagalay aragga dhow, aragti fog, ama astigmatism. Si kastaba ha ahaatee, xitaa kuwa leh warqadda muraayadda indhaha ee hoose waxay ka faa'iideysan karaan lenses index sare.
1.71 waa badeeco weerar celis ah. Guud ahaan, mar kasta oo uu sareeyo index refractive, hoos ayuu u dhigayaa lambarka Abbe. Nambarka 1.67 Abbe waa 32, 1.74 waa 33, 1.71na wuxuu sameyn karaa 37. Weerarkii rogaal-celinta waa lagu guuleystay. Nambarka Abbe waa sarreeyaa, kala firdhiskuna wuu hooseeyaa, taas oo si fudud u cad.1.67 aad ayuu uga jaban yahay 1.74, laakiin aad buu u dhumuc weyn yahay xagga dhererka. 1.74 runtii waa dhuuban, laakiin qiimuhu aad buu u sarreeyaa, dhexda dhexe waa mid aad u weyn. Saaxiibo badan ayaa jeebkooda ku dooran kara 1.67. 1.71 ayaana buuxinaysa farqigaas.