(5) Lighting Installations Flashcards
a luminaire that is hung with a cord, chain, or tube that enables it to be suspended from a ceiling or other support; it broadcasts light over the entire space
pendant
a luminaire where a shielded light source directs its light to the ceiling, where it is reflected back to the space
uplight
a luminaire that is usually attached to or recessed in the ceiling and emits a concentrated light downward
downlight
a type of downlight that is a recessed, canister-shaped luminaire with a shielded lamp that emits light downward
high hat
luminaires are mounted above the ceiling or behind a wall or other surface so that any visible projection of light is insignificant
recessed
are decorative, wall- mounted luminaires that provide ambient illumination; they can direct light upward, downward, or in all directions
sconces
luminaires are used in high-ceiling areas, 20 ft (6 m) or higher, that require uniform illumination; it is installed in a grid pattern are typically used to provide ambient illumination in warehouses, gymnasiums, and retail superstores
high bay
luminaires are more compact; they are designed for use in low- to medium-ceiling areas, 12 to 20 ft (3 to 6 m)
low bay
illumination where light received at the work plane or light illuminating an object is incident predominantly from a particular direction
directional lighting
a luminaire that is designed to emit an intense, concentrated beam of light with usually no more than a 20° divergence (spread) from where it is directed
spotlight
a luminaire that emits an intense light that is broader than a spotlight and that is capable of being pointed in any direction
floodlight
a directional lighting installation where luminaires are attached to and are moveable along a metal track
track lighting
a lighting installation in which the light on the working plane or on an object is not incident predominantly from a particular direction
diffused lighting
a lighting component such as a translucent glass refractor that redirects or scatters the light from a source
diffuser
90 to 100% of the light is directed downward for maximum use
direct luminaire
90 to 100% of the light is directed to the ceilings and upper walls and is reflected to all parts of a room or 90 to 100% of the light is directed downward for maximum use
indirect luminaire
beam projection distance and focusing ability characterize this luminaire
highlighting
equal portions of the light is directed downward with the remainder directed upward
general diffuse or direct-indirect luminaire
60 to 90% of the light is directed downward with the remainder directed upward
semidirect luminaire
a lighting installation where the light source is shielded by a panel that is parallel to the wall and attached to the ceiling; it distributes light over the wall
cornice lighting
an up-lighting installation where the light source is shielded by a ledge or recess with light dispersed over the ceiling and upper wall
cove lighting
a lighting installation where the light source is shielded by a panel that is parallel to the wall at the top of a window
valance lighting
a linear luminaire constructed of an inverted metal trough that serves as a fixture for fluorescent lighting lamps
troffer
an incandescent lamp with an elliptically shaped reflector
elliptical reflector (ER) lamp
may use an incandescent filament, a halogen filament tube, or HID arc tube, is a precision pressed-glass reflector lamp
parabolic aluminized reflector (PAR) lamp
an advanced lighting technology that transports light from a single source over a distance to one or more light outlets or emits light evenly along the way (fiber optic RSL systems and light pipe RSL systems)
remote-source lighting (RSL)
a polar graph that represents the luminous intensity of a lamp at various positions beneath the luminaire opening
candela (candlepower) distribution curve
beam projection distance and focusing ability characterize this luminaire
highlighting
