The sculptor Fred Eversley alongside one of his parabolic lenses that is installed on the ground floor of his five-story building in Manhattan’s SoHo neighborhood. Elliott Jerome Brown Jr. for ...

When I visited the 83-year-old artist recently in the five-story cast-iron SoHo building where he lives and works, his parabolic lenses littered the living room.

The parabolic lenses are under 20 inches in diameter and around six inches deep, and the horizontal lenses are just slightly larger in diameter.

The device included a parabolic lens with a 27 µm focal length and an axicon with a cone of radius 30 µm and a height of 23 µm. The parabolic lens was designed to align the widely diffracted light ...

Each disc has a highly polished parabolic concavity on one side that creates optical effects like a lens, sharpening and minimizing the view behind it.

The filament of the lamp is placed in the precise focal point of the parabolic reflector so that the light rays exiting the lens are parallel. This creates a focused beam of illumination from a ...

For most radio and video journalists, a shotgun and a lavalier microphone are pretty much the salt and pepper of sound acquisition in the field. But recently parabolic microphones have started to ...

The filament was formed by the reflection of radiation from the parabolic lens.

Featuring a unique surface emitter technology and parabolic lens for a narrow ±3º angle of half intensity, the VSLY5850 85-nm infrared (IR) emitter delivers a radiant intensity of 600 mW/sr at a ...