Kusankhidwa kwa mandala kungaganizidwe kuchokera kuzinthu zitatu: zakuthupi, ntchito ndi index refractive.
zakuthupi
Zida zodziwika bwino ndi: magalasi agalasi, ma lens a resin ndi ma lens a PC
Malingaliro: ANA akugwira ntchito, kuchokera kumalingaliro achitetezo, kusankha bwino kwa magalasi a utomoni kapena ma lens a PC, odwala myopia apamwamba anali bwino kusankha magalasi agalasi, akulu amatha kusankhidwa malinga ndi zomwe amakonda, mikhalidwe yachuma yoyenera zida zamagalasi.
Magalasi agalasi
Mkulu kuuma, mandala si kophweka kutulutsa zokopa, koma palibe kulimba, zosavuta kuthyoka pamene kugunda;Kuwonekera kwakukulu, kutulutsa kuwala kwa 92%;Kukhazikika kwamphamvu kwamankhwala, kumatha kukana kutengera nyengo yamitundu yonse yoyipa, komanso kusakhala ndi mtundu, sikutha;Koma zofooka, zolemetsa, zosayenera kuti achinyamata azivala.
Ma lens a resin
Kuwala kwambiri kuposa galasi, kuchepetsa kupanikizika kwa wovala chifukwa cha galasi, momasuka;Impact kukana, osati zosavuta kuthyola, ngakhale atathyoledwa mu ngodya obtuse, palibe ngozi kwa maso a munthu;Ikhoza kupakidwa utoto wamitundu yosiyanasiyana, ntchito ya chifunga ndi yabwino kuposa galasi;Koma mandala kuvala kukana ndi osauka, zosavuta kusweka, otsika refractive index, ndi thicker kuposa galasi pepala 1.2-1.3 nthawi.
Ma lens a PC
Kulimba kwamphamvu, kosavuta kuthyoka, kukana kwakukulu, index yayikulu ya refractive ndi mphamvu yokoka yopepuka, kuchepetsa kwambiri kulemera kwa mandala, 100% chitetezo cha UV, zaka 3-5 palibe chikasu;Koma kukonza kumakhala kovuta kwambiri, pamwamba ndikosavuta kukanda, kukhazikika kwamafuta sikwabwino, madigiri 100 amakhala ofewa.Ma lens a PC nthawi zambiri amagwiritsidwa ntchito ngati magalasi, osawoneka pang'ono pagalasi lowoneka bwino, lomwe limayikidwa pamagalasi athyathyathya.
ntchito
Ntchito wamba monga: aspheric mandala, ozungulira mandala, sunshade mandala, anti-buluu kuwala lens, odana ndi kutopa mandala, Mipikisano focal mandala, etc. Malinga ndi moyo wawo ndi ntchito lolingana lens ntchito mtundu.
Aspheric surface lens
Lens ya aspheric imagwirizanitsa cholinga.Magalasi a aspherical ndi ma lens omwe ma radiyo a mfundo iliyonse pamtunda amatsimikiziridwa ndi ma equation apamwamba kwambiri.Mawonekedwe ake a pamwamba ndi osiyana ndi ma lens wamba ozungulira, kotero ndikofunikira kusintha mawonekedwe a lens kuti atsatire kuonda kwa lens.Mapangidwe ozungulira omwe amagwiritsidwa ntchito m'mbuyomu amawonjezera kupotoza ndi kupindika, zomwe zimapangitsa kuti pakhale zithunzi zosadziwika bwino, mawonekedwe opotoka, masomphenya opapatiza ndi zochitika zina zosafunika.Mapangidwe amakono a aspheric amakonza chithunzicho, amathetsa kusokonezeka kwa mlengalenga ndi mavuto ena, ndipo amachititsa kuti lens ikhale yopepuka, yowonda komanso yosalala, yomwe imapangitsa kuti mwiniwakeyo akhale wachilengedwe komanso wokongola.
Magalasi ozungulira
Kusintha kozungulira kwa magalasi ozungulira.Lens yozungulira ndi imodzi yomwe mbali zonse za lens zimakhala zozungulira, kapena mbali imodzi ndi yozungulira ndipo ina ndi yafulati.Nthawi zambiri wandiweyani, ndi kudzera disolo kuona zinthu mozungulira kupotoza, mapindikidwe ndi zochitika zina, wotchedwa aberration.Poyang'ana wovala kudzera mu lens yozungulira, mawonekedwe a mawonekedwe a nkhope amathanso kupezeka.Magalasi ozungulira nthawi zambiri amakhala pansi pa -400 madigiri.Ngati digiriyo ndi yapamwamba, lens idzakhala yowonjezereka ndipo kupanikizika pamphuno kudzakhala kwakukulu.Izi ndizovuta zamagalasi ozungulira poyerekeza ndi magalasi a aspheric.
Nthawi zambiri, poyerekeza ndi mandala a aspheric, mandala a aspheric okhala ndi zinthu zomwezo ndi digiri yake ndi yosalala, yowonda, yowona, yachilengedwe komanso yomasuka, yomwe imathetsa vuto loti mandala ozungulira achikhalidwe amakhala ndi kupotoza powona zinthu mozungulira.Ma lens achikhalidwe ozungulira amachepetsa mawonekedwe a wovala, pomwe mandala a aspheric amachepetsa m'mphepete mwake mpaka pansi, ndipo mawonekedwe ake ambiri amatha kukwaniritsa zosowa zambiri za makasitomala.
Lens yotchinga kuwala kwa buluu
Magalasi otsekereza a buluu ndi magalasi omwe amalepheretsa kuwala kwa buluu kuti zisakhumudwitse maso anu.Imateteza maso ku kuwonongeka kwa kuwala kwa buluu potsekereza ndikuwonetsa kuwala kwa buluu wothamanga kwambiri wamphamvu kwambiri kudzera m'magalasi apadera.Magalasi a anti-blue kuwala ndi oyenera kwa anthu omwe amakonda kusewera ndi makompyuta ndi mafoni a m'manja.
Sunshade lens
Imadziwikanso kuti lens ya solar.Anthu omwe ali padzuwa nthawi zambiri amadalira kukula kwa mwana kuti asinthe kutuluka kwa kuwala kuti asawonongeke kwambiri ndi kuwala kwa diso.Nthawi zambiri amagawidwa m'magulu atatu:
(1) Magalasi osintha mitundu:
Chotsatira chachikulu ndikuteteza maso ndikuletsa kukondoweza kwamphamvu kwa kuwala.Magalasi amakhala opanda mtundu m'nyumba, koma amasintha kuchoka ku mtundu kukhala wakuda akakumana ndi kuwala kwamphamvu panja.Posankha mitundu ya magalasi osintha mitundu, nthawi zambiri tikulimbikitsidwa kusankha mitundu itatu: yofiira, yobiriwira, ndi imvi.Chifukwa mitundu itatu iyi imagwirizana ndi mawonekedwe a thupi, imawongolera kusiyanitsa ndi kuthwa kwa mawonekedwe, ndipo sisintha mtundu woyambirira wa mawonekedwe chifukwa cha lens.
(2) Magalasi opaka utoto:
Pofuna kupewa kukondoweza kwamphamvu kwa dzuwa komwe kumachitika chifukwa cha kuwonongeka kwa maso.Magalasi amapakidwa utoto wamitundu yosiyanasiyana kudzera munjira inayake kuti akwaniritse zosowa zamitundu yosiyanasiyana yowonera.Ma lens opaka utoto sali oyenera kugwiritsidwa ntchito m'nyumba chifukwa amatha kusokoneza mawonekedwe.Mbale COLOR IMENE ANGAPEREKE MALINGA NDI WOPANGITSA KAWANSI, MUNTHU MUNTHU AMAPEZA NDI KUGWIRITSA NTCHITO CHILENGEDWE KUSANKHA KUSANKHA THUTU.
(3) Polarizing mandala:
Magalasi omwe amalola kuwala kokha kudera linalake la kuwala kwachilengedwe kudutsa.Kuti muchepetse kukhumudwa kowoneka chifukwa cha kunyezimira, ndikoyenera kwambiri masewera akunja.Mwachitsanzo: masewera a m'nyanja, skiing ndi nsomba.
Kutopa kusagwira mandala
Ma lens odana ndi kutopa amawonjezera + 50 ~ + 60 digiri yosinthira ku mandala molingana ndi mfundo yachidutswa chofananira chopita patsogolo, imakulitsa kuwala kwa myopia, imabwezeretsa kuyenda kwa microwave kuti ikhale yanthawi zonse, imabwezeretsanso kusintha kwa magalasi, ndikukwaniritsa ntchitoyi popanda kutopa, motero kukwaniritsa "decompression" yonse ya maso.
Ma lens angapo olunjika
Amatchedwanso patsogolo angapo lolunjika mandala, ndi kuloza mu mandala omwewo m'deralo ndi pafupifupi kutha m'dera pakati, ndi diopter, kusintha pang'onopang'ono kuchokera kutali ndi pang'onopang'ono pafupi ntchito kuwerenga adzakhala kuwala kwambiri ndipo pafupifupi kutha organic. pamodzi, kotero pa mandala pa nthawi yomweyo ndi tione mtunda, mtunda wapakati ndi kutseka chofunika osiyana luminosity.
Mndandanda wa refractive
Ma lens a resin nthawi zambiri amakhala ndi: 1.50, 1.56, 1.60, 1.67, 1.74 refractive index
Magalasi agalasi wamba ali ndi: 1.8 ndi 1.9 refractive index
Nthawi zambiri, mandala omwe ali ndi index yotsika kwambiri ya refractive amatulutsa mandala owonda kwambiri.Inde, refractive index sizinthu zokha zomwe zimatsimikizira makulidwe a lens.Mtunda wa ophunzira ndi kukula kwa chimango zimakhudzanso makulidwe a mandala.Kukula kwa mtunda wa wophunzira, chimango chocheperako, lens imachepa.Mwachitsanzo, ngati mandala a 1.56 amasankhidwanso, mandala okhala ndi mtunda wa 68mm ndi woonda kwambiri kuposa mandala okhala ndi mtunda wa 58mm.Izi ndichifukwa choti magalasiwo akatalikirapo, ndiye kuti amakula kwambiri.Onani pa tebulo lofananiza kusankha koyenera kwa lens yoyenera ya refractive index, nthawi zambiri mlozera wa refractive wa mtengo wa mandala umakhalanso wapamwamba, pewani kusankha mwakhungu magalasi apamwamba a refractive index.
Nthawi yotumiza: Sep-10-2022