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Flat-top / Round-top Bifocal Lens
Lens ya Bifocal irashobora kwitwa intumbero nyinshi.Ifite imirima 2 itandukanye yicyerekezo mumurongo umwe ugaragara.Kinini ya lens mubisanzwe ifite ibyangombwa bikenewe kugirango ubone intera.Ariko, ibi birashobora kandi kuba ibyo wanditse kugirango ukoreshe mudasobwa cyangwa intera iringaniye, nkuko mubisanzwe wasangaga ugaragara neza iyo urebye ukoresheje igice cyihariye cya lens. Igice cyo hepfo, nanone cyitwa idirishya, mubisanzwe gifite ibyo wasomye.Kubera ko muri rusange ureba hasi kugirango usome, ...