K9 fused silica Positive/Negative Meniscus lenses

Meniscus lens also called convex-concave lens,it's a special lens which have one surface convex and one surface is concave, it's shape like a moon.it's most important feature is reduce aberration to make a better imaging.   Features Shape: one surface convex and one surface is concave, looks like crescent Fuction: it can both converge light and disperse light   Two types Positive Meniscus lens, the convex surface bender, converge the light rays, similar to a convex lens, it can help the parallel light converge to a single point   Negative Meniscus lens, the concave surface bender, disperse the light rays, similar to a concave lens, it can disperse the parallel light outward   Main Purpose Correcting aberrations: used to eliminate the blurring and distortion at the edges of the lens in the complex lenses such as cameras and microscopes   Specifications Substrate K9, UV fused silica,sapphire, caf2, Znse,ZnS, Single crystal Silicon, CDGM optical glass Dimension 5-400mm Size tole…