Luminaires & Distribution
Last Update: November 1, 2011
Adjust text size: Decrease text size.Restore text size.Increase text size.

Luminaires & Distribution Overview

Luminaires, also called light fixtures, are complete lighting units consisting of lamp(s) and applicable auxiliary components such as ballasts together with the parts designed to distribute the light, position and protect the lamps, and connect the lamps to the power supply.

There are many ways to categorize luminaires, such as by general application (e.g., indoor, function/distribution, (e.g., uplight, direct/indirect, asymmetric), mounting (e.g., pendant) and others. Similarly, there are many factors that should be considered when evaluating and selecting the right luminaire for a given application, such as efficiency, components, materials, optical and glare control, distribution pattern, aesthetics and architectural integration, interaction with space objects and surfaces. ease of maintenance, special concerns such as safety and hazardous conditions, and so on.

This chapter describes these and other characteristics while providing tools that can be used to evaluate and design using luminaires. The most aesthetic luminaire for a given task, for example, may be the least efficient, while the most efficient may act as a “glare bomb” in the space. A good luminaire must not only be efficient in terms of luminaire light output per watt of electrical input, but place the proper intensity of light precisely where it is needed, without direct glare to users. The chapter concludes with a discussion of how to retrofit existing luminaires.
Luminaires & Distribution

  =  Subscriber Content