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Lamp
A portable lamp consists of a (from bottom to top) a stand, a base, a mount through which the electrical wiring travels, a neck, a socket to hold the bulb, a lamp shade, a harp that connects the top of the shade to the socket, and a decorative finial that holds the harp in place.Lamp Holder
Socket inside a housing, which holds the lamp in place and connects it to the electrical source.Lead Crystal
Fine quality glass having a high content of lead oxide.LED
Light Emitting Diode. is a semiconductor device that emits narrow-spectrum light when electrically biased in the forward direction.LEED
(Leadership in Energy and Environmental Design): A voluntary, consensus-based national standard for developing high-performance, sustainable buildings. - www.usgbc.org
Lighting
Lighting includes both artificial light sources such as lamps and natural illumination of interiors from daylight (see Daylighting). Lighting represents a major component of energy consumption, accounting for a significant part of all energy consumed worldwide. Artificial lighting is most commonly provided today primarily by electric lights. Proper lighting can enhance task performance and aesthetics. Indoor lighting is typically generated from a form of fixture and a key part of architecture and interior design.
Lighting Control
Devices which give you flexibility, decorative effects and multiple uses from your lighting sources. Today’s sophisticated dimming systems enable you to lower the light level to conserve energy and increase bulb life; vary the mood of a room; alter light source intensity; create lighting scene in each room. Types of controls include lighting control systems, integrated dimming systems, touch dimmers, slide dimmers and rotary dimmers.Lighting Control System
Lighting control system consists of a device, typically an lighting controller (or computer), that controls electric lights for a building. Lighting control systems usually include an interface to a Building Automation System. These interfaces allow users the ability to switch power to lights, dim lights, and program lighting levels. A major advantage of a lighting control system over conventional lighting is the ability to control any device from any interface. Additionally, lighting control systems provide the ability to automatically power a device based on programming events such as:
- Chronological time (time of day) - "Scheduling"
- Astronomical time (sunrise/sunset)
- Room occupancy - occupancy override
- Setpoint adjustment
- Events Alarm conditions
- Program logic - Building Automation System (programmatic combinations of events)
Light Distribution
Pattern of light produced by a fixture, or created in a room.Light Sources
The performance of any light fixture depends on the light source, or bulb, that’s used. Different sources produce different effects.Line Voltage Systems
120 volt distribution is used mostly for lighting mounted to the outside of a house or for post-top lanterns along a drive or path. Line voltage landscape lighting can provide more light and handle greater distances than low voltage systems, but the installation is less flexible and more costly.
LMB (or LMB Controller)
Acronym standing for Lighting Main Board. It is a circuit board with control software. The term is typically used when discussing relay panels.
Load Response or Load Shedding
See Demand Limiting
A small light on a wall switch which helps the occupant find the switch in the dark.
On the other hand, a "pilot light" indicates the on/off state of the circuit controlled by the switch. See also Pilot .
Low Voltage Fixtures
Recessed track, task, decorative or landscape fixtures for low voltage lamps. A transformer is required for these fixtures and may by integrated, local or remote.
Low Voltage Housing
Recessed housing with an integral, or occasionally, remote transformer.
Low Voltage Lamps
Incandescent lamps that operate at 6, 12 or 24 volts. Low voltage lamps require a step-down transformer to reduce the voltage from the normal household 120 volts.
Low Voltage Lighting System
A type of lighting that operates on 12-volt current rather than the standard 120 volts. Power is supplied by a transformer, which is itself connected to 120-volt power.
Low Voltage Trim
Either a reflector trim with an integral transformer, which installs in a standard housing, or the dedicated trim to a low voltage housing.
Low Voltage Track
Track powered at low voltage by a step-down transformer, which installs in a standard housing; or the dedicated trim to low voltage housing.
