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1.59 PC Xiav Txiav HMC Optical lenses
Cov iav PC, cov iav resin feem ntau yog cov khoom siv thermosetting, uas yog, cov khoom siv raw yog kua, cua sov kom ua cov iav khov. PC daim kuj tseem hu ua "space piece", "space piece", lub npe tshuaj yog polycarbonate rog, yog cov khoom siv thermoplastic. Uas yog, cov khoom siv raw yog khov, cua sov tom qab ua cov iav, yog li cov iav no yuav kub dhau tom qab cov khoom tiav lawm yuav raug deformed, tsis haum rau cov av noo siab thiab kub.
Lub lens PC muaj lub zog tawv, tsis tawg (2cm siv tau rau iav tiv thaiv mos txwv), yog li nws tseem hu ua lub lens kev nyab xeeb. Lub zog tshwj xeeb tsuas yog 2 grams ib cubic centimeter, ua rau nws yog cov khoom siv sib dua tshaj plaws tam sim no siv rau cov lens.
