Lens
Lens may refer to:
Optics
- Lens (anatomy), a part of the eye
- Corrective lens for correction of human vision
- Contact lens, placed on the cornea of the eye
- Camera lens, a lens designed for use on a camera
- Contact lens, placed on the cornea of the eye
Other radiation focus and forces
Places
Lens (optics)
A lens is a transmissive optical device that affects the focus of a light beam through refraction. A simple lens consists of a single piece of material, while a compound lens consists of several simple lenses (elements), usually along a common axis. Lenses are made from transparent materials such as glass, ground and polished to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly refract radiation other than visible light are also called lenses, such as microwave lenses or acoustic lenses.
History
The word lens comes from the Latin name of the lentil, because a double-convex lens is lentil-shaped. The genus of the lentil plant is Lens, and the most commonly eaten species is Lens culinaris. The lentil plant also gives its name to a geometric figure.
The variant spelling lense is sometimes seen. While it is listed as an alternative spelling in some dictionaries, most mainstream dictionaries do not list it as acceptable.
Lens (surname)
Lens is a surname. Notable people with the surname include:
Defrosted
Defrosted is the second album by American rock band Frijid Pink. Released in the summer of 1970, the album is more blues-based hard rock than its predecessor, yet still contains the characteristic fuzz guitar sound featured prominently on the group's first album, Frijid Pink. This is the last album to feature Kelly Green (Tom Beaudry) and Gary Ray Thompson; their departure from the group soon followed, fueled by an ego-driven notion that 'they' were Frijid Pink. The band were on the brink of major success at that time, but this breach of contract essentially ruined their chances. The LP reached only #149 on U.S. charts, although the debut one reached #11; the track "Sing A Song For Freedom" as a single made #55 in the U.S.A. in July 1970 and #22 in Canada that September. German CD release (1997, Repertoire Records) includes four bonus tracks taken from 1971 and 1972 singles.
Track listing
All titles by Thompson & Beaudry except where noted.
Podcasts:
