Zinc Selenide (ZnSe)
Nā Lens Meniscus maikaʻi

Hoʻohana mua ʻia nā lens Meniscus no ka nānā ʻana i nā wahi liʻiliʻi a i ʻole nā ​​noi collimation.Hāʻawi lākou i ka hana ʻoi aku ka maikaʻi ma ka hōʻemi nui ʻana i nā aberrations spherical.ʻO nā lens meniscus maikaʻi (convex-concave), nona ka ʻili convex a me ka ʻili concave a ʻoi aku ka mānoanoa o ka waena ma mua o nā ʻaoʻao a hoʻohuli i nā kukuna māmā, ua hoʻolālā ʻia e hōʻemi i ka aberration spherical i nā ʻōnaehana optical.Ke hoʻohana ʻia e kālele i ke kukui i hui ʻia, pono ka ʻaoʻao convex o ka lens e kū pono i ke kumu e hōʻemi ai i ka aberration spherical.Ke hoʻohana pū ʻia me kahi lens ʻē aʻe, e pōkole ka lens meniscus maikaʻi i ka lōʻihi o ke kiko a hoʻonui i ka aperture helu (NA) o ka ʻōnaehana me ka ʻole o ka hoʻokomo ʻana i ka aberration spherical nui.No ka mea, ʻoi aku ka nui o ka radius meniscus maikaʻi o ka curvature ma ka ʻaoʻao concave o ka lens ma mua o ka ʻaoʻao convex, hiki ke hana ʻia nā kiʻi maoli.