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1.67 Xiav txiav Spin Photochromic Grey HMC Optical lenses
lub lens zoo, cov khoom siv yog qhov tseem ceeb
Cov khoom siv ntawm ib khub lens ua lub luag haujlwm tseem ceeb rau lawv txoj kev xa tawm, kev ruaj khov thiab Abbe tus lej (tus qauv zaj sawv ntawm qhov chaw ntawm lub lens). Nws tuaj yeem ua kev tshawb fawb thiab kev txhim kho tob tob ntawm cov ntaub ntawv, nrog rau qhov zoo uas tswj tau thiab kev ua tau zoo heev.
txheej zaj duab xis, ua rau lub lens yooj yim hnav
Cov txheej txheem zaj duab xis zoo ntawm lub lens tuaj yeem ua rau lub lens ua tau zoo dua, tsis yog tsuas yog kev ua tau zoo ntawm qhov muag xws li kev xa tawm tau zoo dua xwb, tab sis nws qhov nyuaj, kev hnav tsis kam, thiab kev ua haujlwm ntev kuj zoo dua.
