1.56 Bifocal Flat saman / Round Top / Haɗe-haɗen ruwan tabarau na gani na HMC
Cikakken Bayani
| Wurin Asalin: | Jiangsu | Sunan Alama: | BORIS |
| Lambar Samfura: | BifocalLens | Kayan Lens: | NK-55 |
| Tasirin hangen nesa: | Bifocal | Fim Mai Rufi: | UC/HC/HMC |
| Launin ruwan tabarau: | Fari | Launin Rufi: | Kore/Blue |
| Fihirisa: | 1.56 | Takamaiman Nauyi: | 1.28 |
| Takaddun shaida: | CE/ISO9001 | Abbe Value: | 38 |
| Diamita: | 70mm ku | Zane: | Lebur/Zagaye/Hade |
Akwai digiri biyu kawai akan ruwan tabarau na bifocales, waɗanda aka raba zuwa haske na sama da ƙananan haske. Dukansu haske na sama da ƙananan haske na iya zama myopia, hyperopia, astigmatism, da dai sauransu, amma haske na sama ya fi zurfi fiye da na sama don myopia da shallower don hangen nesa.
Ana haɓaka ci gaba akan tushen haske biyu. Ba wai kawai yana da halaye na haske biyu ba, ciki har da haske na sama da haske na kasa, amma kuma yana da tsari a hankali a tsakiya. Matsayin da ke tsakanin haske na sama da haske na ƙasa shine tsarin canji a hankali.
A saman, a bayyane yake don ganin bambanci tsakanin haske biyu. Ana iya ganin layin rarraba ko haɗin kai tsakanin haske na sama da ƙananan haske, amma saman ruwan tabarau na ci gaba ba zai iya ganin wani bambanci ba.
Tare da yankin miƙa mulki, babu matsalar tsallen giwa. Wato sannu a hankali daga nesa zuwa kusa, daga kusa zuwa nisa, idan ba a sami wurin mika mulki ba, daga kusa zuwa nesa, daga nesa zuwa kusa, babu buffer overshoot.
Gabatarwar samarwa
Bifocal yana nufin ikon dioptric guda biyu daban-daban akan ruwan tabarau iri ɗaya, ikon dioptric biyusu dan rarraba shi a wurare daban-daban na ruwan tabarau, yankin da ake amfani da shi don gani mai nisa ana kiran shi yankin nesa, wanda ke cikin rabin rabin ruwan tabarau; yankin da ake gani a kusa ana kiran shi yankin kusa, wanda ke cikin rabin rabin ruwan tabarau.
Amfanin bifocals: Kuna iya ganin abubuwa daga nesa ta wurin hangen nesa mai nisa na lenses guda biyu, kuma kuna iya ganin abubuwa a nesa kusa ta kusa da hangen nesa na ruwan tabarau iri ɗaya. Ba kwa buƙatar ɗaukar gilashin guda biyu tare da ku, kuma ba kwa buƙatar canzawa tsakanin nisa da kusa da tabarau akai-akai.
Lalacewar bifocals: Fannin kallo ya fi na ruwan tabarau mai hangen nesa guda, musamman kusa da hangen nesa. Misali, karanta littattafai da jaridu yana buƙatar haɗin kai tare da motsin kai. Akwai lahani na gani na tsalle-tsalle da canza yanayin hoto, kuma akwai layin rarraba, wanda ke da sauƙin gani sanye. Bayyana shekaru tare da bifocals.
Tsarin Samfur
