Optics

Optical Glass Spherical Convex Concave Biconvex Meniscus Lens

A plano-convex lens is compose of a plane and convex surfaces, has a positive focal length.It is used for the changing between point light source and parallel beam.It is mean when the light through ...
Optics

Achromatic doublet lenses，double convex Lens, optical lenses, optical components

The achromatic doublet lens is used to minimize or eliminate chromatic aberration. Its achromatic design also helps to minimize spherical aberration. Compared with a single lens, an achromatic doublet ...
Nature

Objective and subjective outcomes in comparing three different aspheric intraocular lens implants with their spherical counterparts

Thirty patients were randomised to receive one of six lens implants including three aspheric lenses and their spherical counterparts. Pre and postoperative testing was carried out including visual ...