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Magalasi a 1.71 Blue Cut Spin Photochromic Gray HMC Optical
Ubwino wa substrate umatsimikizira kulimba kwa lenzi ndi kudalirika kwa chophimbacho. Substrate yabwino ndi yowala komanso yowonekera bwino, imagwiritsidwa ntchito nthawi yayitali komanso yosavuta kuisintha kukhala yachikasu; Ndipo magalasi ena sagwiritsidwa ntchito kwa nthawi yayitali pachikasu, kapena ngakhale kuphimba. Lenzi yabwino yopanda mikwingwirima, mikwingwirima, pamwamba paubweya, maenje oboola pakati, lenzi yopingasa kuti ikwaniritse kuwala, kutsirizika kwake kumakhala kokwera kwambiri. Palibe banga, mwala, mzere, thovu, ming'alu mkati mwa lenzi, ndipo kuwalako ndi kowala.
Ngati refractive index ili pamwamba, lenzi imakhala yopyapyala, ndipo mtengo wake umakwera.
