Philips Research has demonstrated a unique variable-focus lens system that has no mechanical moving parts. Suited to a wide range of optical imaging applications, including such things as digital ...

Adaptive liquid lens: A lens based on a new electrically responsive fluid changes shape, and thus focal length, when a voltage is applied. (Courtesy: Miao Xu, Hefei University of Technology) Materials ...

Aspheric lenses are designed to focus or collimate light without introducing spherical aberration into the transmitted wavefront. For monochromatic sources, spherical aberration is often what prevents ...