The organization that develops voluntary guidelines and produces performance standards for the electrical and other industries. A label placed by Underwriters Laboratories, which means a product has been tested for fire safety and electrical safety. One lumen per square foot equals one footcandle, while 1 lumen per square meter equals 1 lux. Ballast factor divided by input power (watts). Bulb Base (Light Fixture) A lamp with a CCT value comparable to that of daylight, generally between 5500K and 6500K. The intensity of light at the center of a reflector lamp beam (expressed in candelas). The wire coil that is heated to produce lighting in incandescent and halogen lamps, normally made from tungsten. A metric used to describe how faithfully a light source can render the true colors of objects and spaces, where natural light sources like the sun have a perfect index of 100. The rate at which energy is taken from an electrical system or dissipated by a load expressed in watts. Lumens Per Watt (LPW) A measure of the efficacy of a light source in terms of the light … Spell. Lux - Equivalent to one lumen per square meter. High CRI light generally makes colors look natural and vibrant. Used in this way, the term “luminaire” is recommended for technical use over the term “lamp” by the International … The housing is the actual light fixture. Measurement unit for energy consumption. Angle between the orientation of a light source and the viewing direction. STUDY. Lighting fixture used to provide outdoor area lighting, where the lamp is found on top of a pole, often with a reflective housing that achieves a characteristic lighting pattern. Light is a form of radiation, including infrared and ultraviolet light, which are invisible for humans. Lighting where more than 90% of the light goes directly from the source to the area you wish to illuminate. The illuminance requirements of built environments are determined by their intended purpose, and there are two common units of measurement: Higher illuminance levels make surfaces appear brighter to the human eye and improve visibility. LED Lighting Terminology – Speaking the Industry Language LED lighting terminology and definitions can be confusing. Measurement unit for temperature, although in the lighting industry it is more commonly used to indicate the correlated color temperature (CCT) of light sources. portalId: "455757", The real power is represented by the actual watts consumed, while the apparent power is the multiplication product of voltage and current, measured in volt-amperes. Lighting that focuses its output in a narrow beam, drawing attention to specific decorative features or objects, making them stand out from their surroundings. An interior design approach where several types of lighting are combined to achieve a specific ambience or mood. To learn more, visit this article. Lighting designed to illuminate an object from behind, which causes an appealing glow effect around its edges. See reviews, photos, directions, phone numbers and more for the best Lighting Fixtures in Stanwood, WA. A measure of electrical potential expressed in volts. The PAR designation is followed by a numerical value indicating the lamp diameter in 1/8ths of an inch. High-pressure tungsten filament lamps containing halogen gasses. Reflectors are often used with lamps that emit light rays in every direction (HID, fluorescent, etc.) Lamp or luminaire component that has the goal of dispersing the lighting output so that the desired distribution pattern is achieved. A luminaire includes the lamp, the ballast or driver, internal wiring, reflectors, lens and any additional components required to deliver light. Terms in this set (80) ... (also "fixture" or "instrument") Lighting key. CFLs often have a built-in ballast and screw bases, allowing them to replace incandescent and halogen bulbs directly. Click here to read a more detailed article explaining how the ballast factor affects fluorescent tubes. Click here to learn more about UL listing. If a light source gets reflected on your laptop screen, for example, it does not bother your eyes but distinguishing objects on the screen may be impossible. National Electric Code,a publication by the National Fire Protection Association, which establishes the requirements for fireproof electrical installations. A group of LEDs mounted on a printed circuit board, capable of producing a lighting output. Louver A series of baffles arranged in a geometric pattern used both to shield a light source from an unwanted viewing angle and to redirect the remaining light to a more usable location. Electric utility companies normally apply additional charges if the power factor of a building drops below a specified level. For example, the following lumen maintenance life would describe a product whose output decreases to 70% after 60,000 hours of use: Lumens Per Watt (LPW) is the light output per unit of energy consumption and it reflects the lighting system's efficacy. The longer fluorescents burn, the more likely it is that the chemical properties will shift and cause an imbalanced reaction, making the fluorescence less white and less bright than it once was. Learn more about lighting as a service here. As implied by its name, it is equivalent to the amount of energy consumed by a one-kilowatt appliance running for one hour. A piece of glass or acrylic that has the purpose of scattering the light from a bulb, which results makes lighting more uniform and eliminates glare. A cash incentive for a purchase. A troffer-type luminaire that is covered by a lens, making the lighting distribution more uniform and eliminating glare. There are two types of glare: A light source that creates shadows with a very sharp edge when cast on objects. Some of the application parameters they define are wattage, base type, envelope size, and light center length. Borderlights/striplights The striplight is a multi-lamp fixture designed for lighting scenery or a cyclorama. Acronym for Digitally Addressable Lighting Interface, a communication protocol for lighting automation. Measurement unit for illuminance, or lumens per unit of area. Lamps in which an arc passing between two electrodes in a pressurized tube causes various metallic additives to vaporize and release large amounts of light. Color Selectable New Construction and Remodel Canless Recessed Integrated LED Kit (4-Pack) The Color Temperature Select Recessed Lighting The Color Temperature Select Recessed Lighting Kits are the recessed lights of the future. Foot-candle - Equivalent to one lumen per square foot. The number is calculated by dividing the lumen output of a particular lamp/ballast combination by the lumen output of the same lamps(s) on a reference ballast. The opposite effect is wall grazing. Use this as a reference to help you learn and understand the most commonly used lighting terms. Fixture Parts Terminology. Also known as beam spread, the beam angle is a value that describes the downward light cone emitted by a lighting fixture with a reflector. Some common CCT values include: Although the correct technical term is correlated color temperature, it is often shortened to only color temperature. luminaire – A light fixture; the complete lighting unit, including a lamp, reflector ballast, socket, wiring, diffuser, and housing. A type of ballast used with HID lighting, which uses a series of controlled voltage pulses to ignite the lamp, minimizing damage to the electrodes each time the lamp is turned on. Not to be confused with luminous flux. ADA Compliant Fixtures that adhere to the guidelines provided by the Americans with Disability Act, stating that a wall light … Light arriving at a surface, expressed in lumens per unit area. The R9 color rendering value produces strong, vibrant reds. A tungsten wire positioned inside an incandescent or halogen lamp, that when heated electrically generates radiation in the visible, infrared and ultraviolet ranges. For example, a 3000-lumen lamp connected to a ballast with a BF of 0.90 or 90% will produce 2700 lumens (3000 lm x 90% = 2700 lm). Lighting Fixtures in Stanwood on Non-shunted sockets have separate contacts –– or points of entry for the wires –– creating two tracks for the electrical current to travel. The driver is responsible for many functions of the lamp including, converting the electrical current to DC, dimming the lamp, and responding to voltage changes. A lighting design strategy that maximizes the use of natural light to reduce energy costs and create indoor spaces that feel natural and appealing. A phenomenon where a lamp blinks repeatedly, often caused by power supply issues, or a faulty ballast or driver. A portion of lighting is always lost due to internal geometric features and reflection. The technology became commercial very recently, however, and has not achieved a market share comparable to that of LED. White light that is characterized by a yellow tinge. Learn more about R9 color rendering value here. Multiple LEDs (light-emitting diodes) aligned in a single strip and used for creating uninterrupted lines of directional lighting. Lighting products with the ENERGY STAR have been tested for superior energy efficiency. Conversion ratio between lighting power output and electric power input, measuring both quantities in watts. This is a common specification for HID lighting. 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