Physicists in the US have made the first ultrathin flat lens. Thanks to its flatness, the device eliminates optical aberrations that occur in conventional lenses with spherical surfaces. As a result, ...

Applied physicists have created an ultrathin, flat lens that focuses light without imparting the distortions of conventional lenses. It operates at telecom wavelengths -- i.e., those used for ...

Columbia Engineering researchers have created the first flat lens to focus a large range of colours of any polarisation to the same focal point without the need for additional lenses. The one micron ...