Camera lens names might look like gibberish, but they have meaning. We decode the naming conventions of 11 lens manufacturers ...

A progressive lens design is like a bi- or tri-focal lens in that it corrects more than one vision problem at a time. However, these lenses have no visible lines, improving the cosmetic appearance of ...

If evolution occurs through gradations, the critics say, how could it have created the separate parts of the eye -- the lens, the retina ... different types of eyes have emerged in evolutionary ...

Napoleon started the Commission of Lighthouses as part of the Corps of Bridges and ... There had been speculation about building this type of lens, but Fresnel was apparently unaware of them ...