chap 4.7-4.8 Flashcards
Basic functions of light in interior building spaces:
Ambient Lighting
Local Lighting
Accent Lighting
Decorative Lighting
Good architectural lighting is crucial to the performance of everyday activities and to
the appreciation of the built environment. (t or f)
t
Sometimes called “general lighting’
, Provides uniform illumination | throughout the space
and Illumination for color and texture.
Ambient Lighting
Sometimes called “task lighting”
where illumination is provided for specific visual function
and Can influence the effectiveness of the individual
performing the task
local lighting
Is directional lighting used to emphasize a particular object or area
Accent Lighting
Combines with other types of lighting to give an overall
“feel” to a room that serves little purpose other than to look
attractive
Decorative Lighting
Is a secondary lighting system that provides backup illumination when the
power supply to the normal lighting system is interrupted
EMERGENCY & SAFETY LIGHTING
Required in the critical care and emergency spaces
found in hospitals, police, fire protections and crisis
management areas
Emergency Lighting
Enables normal activities to continue substantially unchanged.
and Powered by an emergency generator or battery backup system
Stand-by Lighting
Ensures the safety of people involved in a potentially =
hazardous process
Safety Lighting
To ensure that an escape route can be effectively
identified and used in case of failure of normal lighting
system
Escape Lighting
Exit Lighting
Illuminated signage used to provide clear directions for
an emergency exit of building occupants
A luminaire that is hang 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.
Pendent
Is 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
Are mounted above the ceiling or behind a wall or other surface
so that any visible projection of light is insignificant.
Recessed Luminaires
A decorative, wall-mounted luminaires that provide ambient
illumination. They can direct light upward, downward, or in all
directions.
Scones
Are used in high-ceiling areas, 20 ft (6 m) or higher that require
uniform illumination.
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). They are typically
used for general illumination in offices, retail spaces, and
loading dock areas.
Low Bay Luminaires
Is 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
Is illumination where light received at the work plane or
light illuminating an object is incident predominantly
from a particular direction.
Directional Lighting
A directional lighting installation where luminaires are
attached to and are moveable along a metal track.
Track Lighting
Is 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
Is a lighting component such as a translucent glass refractor
that redirects or scatters the light from a source.
Diffuser
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 uplighting 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
Fluorescent lighting
Widely used for general lighting installation in buildings
Fluorescent luminaires can Have a flat lens to diffuse the light.
Lensed
Fluorescent luminaires canHave parabolic-shaped reflectors and open louvers to direct
the light downward.
Parabolic Louvered
Fluorescent luminaires can Have a lens that wraps around the lamps to diffuse and direct
the light outward.
Wraparound
small, offer low maintenance, and have
excellent light and color qualities
Halogen and Compact fluorescent lamps
Good color rendering, 2 qualities and work
well in spaces with high ceiling.
Metal Halide Lamp
Used when color rendition is not important
such as factories and warehouse.
High Pressure Sodium (HPS) Lamps
Are rarely used in building interiors
because they produce a monochromatic
yellow light that renders even the most
vibrant colors in the shade of yellow.
Low Pressure Sodium (LPS) Lamps
Are incandescent, compact fluorescent or HID lamps with a built-in reflecting
surface.
REFLECTOR LAMPS
Incandescent lamp with an elliptically shaped reflector. Particular
effective at increasing efficiency of baffled-down lights.
Elliptical Reflector (ER) Lamp
That may use and incandescent filament, halogen
filament tube, or HID arc tube, is a pressed-glass reflector
lamp. Relay on both internal reflector and prism in the lens
for the control of the light beam
Parabolic Aluminized Reflector (PAR) Lamp
Is an advance lighting technology that transports light from a single source over a
distance to one or more light outlets emits light evenly along the way.
REMOTE-SOURCE LIGHTING INSTALLATIONS
is a set of reflectors, filters, and lenses to
fed the light of fiber optic cables and a fixture to distribute the light at the
point of illumination.
Fiber optic RSL systems-
a hollow tube with a reflective inner surface that
directs light through
Light pipe RSL systems-
