ambient lighting

(redirected from positional lighting)

ambient lighting

Light that comes from all directions. Contrast with "directional lighting," which is made up of a light source with parallel light rays that do not diminish with distance. Also, contrast with "positional lighting," in which the rays are not parallel, but diminish in intensity from the source.


Primary Light Sources
Ambient lighting comes from all directions, while directional and positional lighting come from one source. (Image courtesy of Intergraph Computer Systems.)

Ambient lighting

A form of lighting that illuminates a room in a uniform, unfocused, indirect manner. Task-ambient lighting provides both focused lighting, and general illumination at a lower level, thus conserving energy.

ambient lighting

In any given area, the general background illumination.