Glossary of Machine Vision - L

L

• Laser. In physics, a laser is a device that emits light through a specific mechanism for which the term laser is an acronym: light amplification by stimulated emission of radiation.
• Lens. A lens is a device that causes light to either converge and concentrate or to diverge, usually formed from a piece of shaped glass. Lenses may be combined to form more complex optical systems as a Normal lens or a Telephoto lens.
• Lens Controller. A lens controller is a device used to control a motorized (ZFI) lens. Lens controllers may be internal to a camera, a set of switches used manually, or a sophisticated device that allows control of a lens with a computer.
• Lighting. Lighting refers to either artificial light sources such as lamps or to natural illumination.