Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a transparent ...

One of the oldest problems in optics has been solved. Rafael Gonzalez from Mexico's Tecnologico de Monterrey has come up with an almost comically dense equation that can be used to almost completely ...

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 ...

Sapphire crystal (Al2O3) is a sought-after substrate for a range of high-precision applications; for example, for aerospace and aeronautical vehicles and high-powered laser applications, such as Er: ...

Camera lenses are often described as being 'aspherical', but what does it mean, and is it the only way to design a lens? A lot of lenses are spherical, though. What we mean by “spherical” is usually ...

Aspheres allow designers to build smaller, lighter and simpler optical systems, and can be found in everyday products. Edwin Diaz provides a back-to-basics guide to the technology. You may not realize ...

LEICESTER, U.K.—Cooke Optics has announced that its new 60mm, 90mm and 150mm Macro/i FF 1:1 lenses are now available to order as a full set. The set of three spherical complimentary macro lenses are ...

In the early 1990s, the Opticam ® SM machine was developed for use in the analysis of microgrinding at the Center for Optics Manufacturing, University of Rochester. In mid-1992, a multi-axis flexible ...