Feem ntau siv cov khoom siv tsom iav tsom iav muaj xws li cov iav kho qhov muag, uas muaj qhov ntsuas qhov cuam tshuam ruaj khov, tab sis yooj yim tawg thiab hnyav. Tam sim no, cov nplooj ntawv resin tau siv ntau dua. Resin sheets yog tsim los ntawm cov tshuaj synthesis thiab ua nrog cob ua raw khoom. Nws qhov zoo yog tias nws sib dua, hnav zoo dua, muaj zog tiv thaiv, thiab tsis yooj yim tawg. Tsis tas li ntawd, cov cuab yeej siv tam sim no tau txhim kho Nws kuj muaj qhov hnav tsis zoo, yog li nws yog hom lens uas feem ntau siv tam sim no. Kuj tseem muaj lub lens hu ua PC lens, uas yog hom polycarbonate. Nws muaj zoo toughness thiab tsis yooj yim rau tawg. Nws tuaj yeem tiv thaiv lub lens los ntawm kev tawg thaum lub sijhawm thauj mus los hnyav, thiab nws kuj yog lub teeb heev. Yog li ntawd, raws li kev xav tau sib txawv, koj tuaj yeem xaiv qhov tsim nyog, haum lo ntsiab muag.
Yog tias koj cov tshuaj tsis siab dhau, ces cov lo ntsiab muag zoo tib yam. Zoo li muaj ib hom resin lo ntsiab muag uas zoo tam sim no.
Nws raug nquahu kom mus rau lub tsev kho mob tsis tu ncua kom kuaj sai li sai tau. Tom qab ntawd ua raws li tus kws kho mob txoj kev npaj kom phim koj lub tsom iav. Nco ntsoov xyuam xim txhawm rau txhim kho qhov muag zoo. Tsis txhob siv koj ob lub qhov muag ntau dhau, thiab kom deb ntawm cov xov tooj ntawm tes, khoos phis tawj, TVs thiab lwm yam khoom siv hluav taws xob. Tsis txhob siv koj ob lub qhov muag ntau dhau thiab tsis txhob nyeem hauv qhov tsaus ntuj.
Qhov zoo ntawm cov lo ntsiab muag txawv teb yog lub teeb pom kev zoo, zoo meej, siab hardness, hnav-tiv taus, tiv thaiv teeb pom kev zoo, thiab lwm yam. Qhov tsis zoo yog tias tus nqi siab thiab nws tsis yooj yim kom paub qhov tseeb ntawm qhov cuav. Cov lo ntsiab muag hauv tsev yog tus nqi qis, muaj kev ua tiav, thiab tseem tiv taus lub teeb teeb meem. Lawv shortcomings thiab hardness yog phem tshaj li imported sawv daws yuav.
Qhov kev xaiv ntawm cov lo ntsiab muag myopic yog cov ntaub ntawv hauv qab no zoo dua:
Ua ntej, peb yuav xaiv cov ntaub ntawv nrog cov khoom me me thiab lub teeb yuag. Qhov zoo ntawm cov khoom siv PC lens yog lub teeb, nws yog lub teeb heev rau hnav, thiab tus neeg mob yuav tsis xav tias hnyav heev.
Qhov thib ob, lub lens nrog qhov ntsuas qhov ntsuas siab siab yuav raug xaiv. Lub refractive index yuav yog 1.56, 1.61, thiab 1.72. Rau cov neeg mob uas muaj myopia siab, qhov siab tshaj plaws refractive index tuaj yeem xaiv. Tam sim no, tej zaum yuav muaj qhov ntsuas qhov ntsuas ntawm 1.72 lossis siab dua. Lub siab refractive index ntawm lub lens txhais tau hais tias tus txheeb ze refractive index ntawm lub lens yog qhov muaj zog, thiab lub lens yog sib dua.
Thib peb, nws yog ib qho tsim nyog yuav tau xaiv lub lens nrog cov txheej ntshiab. Qhov txheej txheem no yog qhov tseem ceeb heev. Nws tuaj yeem tiv thaiv khawb thiab khawb ntawm lub lens zoo. Nws cuam tshuam rau kev pom kev pom, yog li nws yog qhov zoo tshaj rau lub tsho sab nrauv ntawm lub lens nrog ib txheej ntawm cov yeeb yaj kiab los tiv thaiv khawb. Lub lens yog yooj yim dua rau siv hauv lub neej txhua hnub.