Glossaire

a
Ambient Light
Electric and/or natural lighting throughout a space that produces uniform general illumination. Synonyms: Ambient light, ambient light, Ambient Light, AMBIENT LIGHT
b
Bollard
A short pole used to close a road or path to vehicles above a certain width or to provide decoravite lighting to an area. Synonyms: bollard
Bracket
Any horizontally projecting support for an overhanging weight, as a corbel, cantilever, or console. Synonyms: bracket
c
Cut-off angle
The critical viewing angle beyond which a source can no longer be seen because of an obstruction (such as a baffle or overhang). Synonyms: Cut-off angle
f
Fixture
Informal substitute term for luminaireA complete lighting unit, consisting of a lamp or lamps together with the components required to distribute the light, position the lamps, and connect the lamps to a power supply. Often referred to as a "fixture." .fluorescentA discharge lampAn electrically energized source of light, commonly called a bulb or tube.  in which a phosphor coating transforms ultraviolet energy into visible lightRadiant energy that is capable of exciting the retina and producing a visual sensation. The visible portion of the electromagnetic spectrum (light) extends from about 0.38 to 0.77 microns. . Synonyms: fixture
i
IALD
International Association of Lighting Designers
IESNA
Illuminating Engineering Society of North America
Indirect sources
Surfaces which, after being illuminated by other sources (direct sources such as the sun, sky, or electric lightRadiant energy that is capable of exciting the retina and producing a visual sensation. The visible portion of the electromagnetic spectrum (light) extends from about 0.38 to 0.77 microns. , or other indirect sourcesSurfaces which, after being illuminated by other sources (direct sources such as the sun, sky, or electric light, or other indirect sources), have measurable luminance and, in turn, become sources themselves.), have measurable luminanceThe luminous intensity of a surface in a given direction per unit area of that surface as viewed from that direction; often incorrectly referred to as "brightness."  and, in turn, become sources themselves. Synonyms: indirect sources
Isolux line
A line plotted on any appropriate set of coordinates to show all the points on a surface where the daylight illuminance is the same. A series of such lines for various illuminance values is called an isolux (isofootcandle) diagram. Synonyms: Isofootcandle line, isofootcandle line, isolux line
l
Lamp
An electrically energized source of lightRadiant energy that is capable of exciting the retina and producing a visual sensation. The visible portion of the electromagnetic spectrum (light) extends from about 0.38 to 0.77 microns. , commonly called a bulb or tube. Synonyms: lamp
Lamp post
A post (generally a pole) supporting a lampAn electrically energized source of light, commonly called a bulb or tube.  or lantern for lighting a street, park, etc. Synonyms: lamp post
LED
A semiconductor diode that emits lightRadiant energy that is capable of exciting the retina and producing a visual sensation. The visible portion of the electromagnetic spectrum (light) extends from about 0.38 to 0.77 microns.  when a voltage is applied to it and that is used especially in electronic devices.
Light
Radiant energy that is capable of exciting the retina and producing a visual sensation. The visible portion of the electromagnetic spectrum (lightRadiant energy that is capable of exciting the retina and producing a visual sensation. The visible portion of the electromagnetic spectrum (light) extends from about 0.38 to 0.77 microns. ) extends from about 0.38 to 0.77 microns. Synonyms: light
Luminaire
A complete lighting unit, consisting of a lampAn electrically energized source of light, commonly called a bulb or tube.  or lamps together with the components required to distribute the lightRadiant energy that is capable of exciting the retina and producing a visual sensation. The visible portion of the electromagnetic spectrum (light) extends from about 0.38 to 0.77 microns. , position the lamps, and connect the lamps to a power supply. Often referred to as a "fixtureInformal substitute term for luminaire.fluorescentA discharge lamp in which a phosphor coating transforms ultraviolet energy into visible light. ." Synonyms: luminaire
Luminance
The luminous intensity of a surface in a given direction per unit area of that surface as viewed from that direction; often incorrectly referred to as "brightness." Synonyms: luminance
p
Pergola
A frame in a garden that climbing plants can grow over and which you can walk through. Synonyms: pergola