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Meniscus cylindrical lens is a lens that one surface is convex shape, another surface is concave with cylindricalshape, The Negative Meniscus Lenses are a convex-concave lens, but is thinner at the center than at the edges. Otherwise description is...
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Optical lenses are divided into spherical lenses and cylindrical lenses. The curved surface of the spherical lens is a part of the spherical surface, and is divided into a convex spherical lens or a concave spherical lens according to the...