LIGHTING FIXTURE AND ITS DISTRIBUTION
Lighting Fixture
A light fixture (US English), light fitting (UK English), or luminaire is an electrical device used to
create artificial light by use of an electric lamp.
Types of Luminaire
Luminaires are the fixtures that house lights. They greatly affect both the brightness and the
spatial distribution of the light, because they bounce and/or filter the light from their lamps, for
different effects.
Types of luminaires are generally categorized by their light distribution. Some common
distributions are shown below:
Lighting Layout
Given the wide choice of different lamps and luminaires available, there is an almost
infinite set of different arrangements of electric lights within a room that will provide a certain
illumination level.
The primary concern in lighting layout is to avoid glare on activity surfaces. Such glare is
a result of light bouncing directly into user's eyes, rather than diffusely.
SUMMARY
Distributions of Lighting
Direct Lighting – means 100% of the light directed down
Semi-Direct Lighting – means Smaller portion direct up - Most of the light directed down
General-Diffuse Lighting – means Light directed evenly around
Direct-Indirect Lighting – means 50% of the light directed up - 50% of the light directed down
Semi-Indirect Lighting – means Most of the light direct up - Small portion of the light directed
down
Indirect Lighting – means 100% of the light directed up
Villena,Grace Angelica C.
ARC-3201