5000K) and feature more light in the blue range. Some lamps are specified or designed to be operated in certain positions, such as horizontal or base-up. Multiple LEDs (light-emitting diodes) aligned in a single strip and used for creating uninterrupted lines of directional lighting. A source of light whose output only has one wavelength. Lighting fixtures with lens or diffusers. Backlighting should not to be confused with backlight, an undesirable lighting effect that can be produced by outdoor fixtures. portalId: "455757", Going from watts (W) to kilowatts (kW) is a pretty straightforward calculation: 1 kW is equal to 1,000 W. A way to measure how much energy is used over time. PAR lamps may be incandescent, halogen or HID types. … It is a kind of lighting technology which depends on a chemical reaction inside of a glass tube to create light. Common term for the housing of a recessed downlight. This is a common specification for HID lighting. The measurement of light and its properties. Just like watts, kilowatts is a measure of how much energy something will consume. An opaque or translucent component that blocks direct sight of a lighting source. }); hbspt.forms.create({ In the BUG rating, these effects are indicated in a scale from 0 to 5, where 0 indicates the effect is minimized and 5 indicates it is not controlled at all. It can come in LED, fluorescent, incandescent versions. The overall length of a lamp, from the top of the bulb to the bottom of its base. ... Luminaire: A lighting fixture … Pendant lights can be used for both general and task lighting. The resulting electrode damage when the lamp is started is intermediate between that of instant start ballast (high damage) and programmed start ballast (low damage), and the resulting service life is also intermediate as a result. Adjective used to describe a lamp or fixture whose lighting output can be modulated with a dimmer. Tube lighting is often known as fluorescent lighting or linear lighting. portalId: "455757", Voltage is the force that pushes electrical current through a conductor. This type of ballast is faster than an programmed start ballast, but slower than an instant start ballast. 2' by 2' or 2' by 4'). All light fixtures have a fixture body and one or more lamps. Measurement unit for electric current. Learn more about R9 color rendering value here. The rate at which energy is taken from an electrical system or dissipated by a load expressed in watts. Acronym for solid state lighting, any type of lighting that uses LEDs to produce light, instead of incandescent filaments, ignited gas or plasma. Lux - Equivalent to one lumen per square meter. International Association of Lighting Designers, a global association that promotes best practices in lighting design, while providing training and scholarships. Beam is the narrowest, spot is a little wider, wash is the widest, and hybrid could be any combination of those three. Lamp or luminaire component that has the goal of dispersing the lighting output so that the desired distribution pattern is achieved. Smaller and lighter than magnetic transformers, electronic versions use electronic switching and special dimmers to step the line voltage down to the lamp voltage. A type of fluorescent lighting ballast that applies a high-voltage pulse to the lamp, making it start instantly without preheating the electrodes. The descriptions for the terms, acronyms and nomenclature represent the meanings understood and shared by a majority of the lighting design community. LPS lights have a very high efficacy, but their color rendering performance is very poor. The MR designation is followed by a numerical value indicating the lamp diameter in 1/8ths of an inch, where two of the most common types are MR11 and MR16. The unit of luminous intensity (candlepower) of a light source in a specific direction. Arc lamps generally stimulate a gas, making it glow and generating a lighting output. Any serious student of lighting design will study the complete glossary of terminology found in many theatrical lighting … Not to be confused with luminous flux. Also known as pot light, canister light or downlight, recessed lighting fixtures or luminaires are installed into the openings in a ceiling, appearing as if the light is shining from an elevated hole. Tube lighting is often known as fluorescent lighting or linear lighting. The drawback of instant-start ballasts is that they reduce the service life of lamps: electrode material is expelled each time the lamp is started, blackening its edges and causing eventual failure. Warm light sources, such as incandescent lamps, have a low color temperature (2000-3000K) and feature more light in the red/orange/yellow range. Lighting with color pumping technology enhances the perceived colors of the items displayed under its light. A specific type of lighting fixture with a cylindrical shape that is embedded in the ceiling, hence its name. The portion of luminous output that gets a response from the rods in human eyes, which are responsible for nighttime vision. Swivel. The time it takes for 50 percent of the lamps in a batch to reach the end of their service life. The service life of lamps tends to be extended as the crest factor becomes lower. A fluorescent lamp uses electrodes to stimulate mercury vapor and produce ultraviolet (UV) radiation, which in turn stimulates the phosphor coating of the lamp to produce visible light. To calculate beam spread, multiply beam angle by 0.18 by distance of surface from light source. The process of fusing together thin sheets of material so that the composite material is stronger and more stable. The dull yellow lighting of low-pressure sodium lamps is an example of monochromatic light. Light output is measured in lumens or the total quantity of emitted light. Light produced by heating a material; Examples include the glow of a candle, an incandescent filament lamp, a shooting star, etc. Acronym for high-pressure sodium, a subtype of HID lighting where excited sodium vapor is the source of light. A phenomenon where a lamp blinks repeatedly, often caused by power supply issues, or a faulty ballast or driver. It is important to note than luminance changes depending on the viewing angle, and high luminance values are the direct cause of glare. Since lumens describe lighting output better than watts, efficacy tends to be a much more useful concept in lighting design. The downlights that are closest to the wall create light scallops and add aesthetic value to a room. Unit of illumination equal to the direct illumination on a surface that is everywhere one meter from a uniform point source of one candle intensity or equal to one lumen per square meter. Fluorescent tubes are designated by the letter “T” followed by a number indicating its diameter in 1/8ths of an inch: Fluorescent tubes come in standard lengths, where the some of the most common are 24” (2’), 48” (4’) and 96” (8’). }); hbspt.forms.create({ Not to be confused with the lumen (lm), measurement unit for the total lighting output of a lamp or fixture, without describing a particular direction. A type of ballast that uses a ferromagnetic core, similar to that of a transformer, to regulate the power supply provided to a fluorescent lamp. SSL is the abbreviation for Solid State Lighting and refers to any type of lighting that uses diodes for illumination. A rating symbol by the U.S. Department of Energy and Environmental Protection Agency that labels a product as energy-efficient. Troffer fixtures have typically been designed to accommodate standard fluorescent lamps (T12, … A decorative lighting fixture with a flat side to be hung on a wall. Also referred to as dimmer switches, light transformers are electrical devices that are used to change the voltage of a circuit to make the light dimmer or brighter. In the USA, many states have rebate programs for energy-efficient technologies (e.g. The beam angle is measured between the downward direction, where the lamp provides maximum lighting intensity, and the direction in which intensity drops to 50%. Light is a form of radiation, including infrared and ultraviolet light, which are invisible for humans. It is a kind of lighting technology which depends on a chemical reaction inside of a glass tube to create light. A lighting fixture that is resistant to breaking or tampering, generally intended for outdoor public spaces. Electronic ballasts are lighter and more efficient than magnetic ballasts, and they eliminate humming and flickering issues. A tungsten wire positioned inside an incandescent or halogen lamp, that when heated electrically generates radiation in the visible, infrared and ultraviolet ranges. The use of under cabinet lights for food preparation areas in kitchens is an example of task lighting. They can also be used to produce a diffused wash of light. Prescriptive lighting rebate programs are not designed to be claimed instantly. STUDY. ADA Compliant Fixtures that adhere to the guidelines provided by the Americans with Disability Act, stating that a wall light … Integrated lighting fixtures are generally more efficient than lamp-based LED fixtures, but they make retrofits more expensive because the entire fixture must be replaced, not only the lamps and ballasts. Measurement unit for temperature, although in the lighting industry it is more commonly used to indicate the correlated color temperature (CCT) of light sources. NEMA 2 = Indoor use, protection against falling dirt and light splashing of water. Ballast Factor Ballast Start Type Base Type Beam Angle Bulb Type Case Quantity CFL - Compact Fluorescent Color Temperature(Kelvin) Color Rendering Index(CRI) Dimmable DLC - Design Lights Consortium ETL (Electrical Testing Laboratory) Fixture Mounting Height High Pressure Sodium Induction Induction Light … This term should not be confused with kilowatt. Lighting method where an object or surface is lit from below, with a luminaire that directs its output upward. Lighting designed to illuminate an object from behind, which causes an appealing glow effect around its edges. As the name suggests, this is a track that functions at a low voltage using a step-down transformer. Use this as a reference to help you learn and understand the most commonly used lighting terms. The LLF accounts for many aspects such as reflector or lens degradation, dust accumulation, lamp degradation due to voltage surges or heat, etc. Some lamps have built-in ballasts or drivers, while others are connected to an external one contained in the fixture. PLAY. formId: "7a6ba076-8bae-413c-a66f-0f6ac80b40da" DLC is a rating system that identifies, through testing and manufacturer data, which lighting products are generally regarded as being acceptable for their intended use. This chemical reaction … The shielding or diffuser portion … luminaire – A light fixture; the complete lighting unit, including a lamp, reflector ballast, socket, wiring, diffuser, and housing. A ceiling lighting fixture that has a stem that separates (or creates a visible gap between) the light from the ceiling. A lamp or lighting fixture that produces directional beams. In lighting installations, wiring and protections are calculated based on the amperes drawn by the lighting circuits, as well as their rated voltage. ETL tests products to the same safety standards as UL listing. Acronym for light-emitting diode, a solid-state component that emits light when exposed to electric current. Low CRI causes some colors to appear washed out or even to take on a completely different hue. Describes how effectively a lighting fixture can convert electric power into lighting, measured in lumens per watt. Any lighting output emitted in unwanted directions, which may have negative consequences. The brightness of an object or surface, as perceived by human eyesight from a specific direction. Leadership in Energy and Environmental Design, a resource efficiency certification framework for buildings, developed by the US Green Building Council. Used to describe a power supply where the flow of electricity always takes place in the same direction, such as that provided to LED arrays by their drivers. To assist in understanding the world of illumination we’ve created this industry language page to support communications with contractors and suppliers. Most high-pressure sodium and mercury lamps are measured at 50% of their rated lives. Each of these names refers to the beam angle range of the light fixture. A complete and functional lighting fixture. Gravity. Other IS ballast benefits typically include parallel lamp circuitry, longer remote wiring distance, easier installation and capability to start lamps at colder temperatures than rapid start ballasts. A measure of the rate of flow of electricity expressed in amperes. A progressive reduction in the luminous output of a lamp throughout it service life. Downlights can be recessed, surface-mounted or pendant. Learn more about lighting as a service here. A feature that allows the fixture … Semi-translucent white glass that owes its milky finish to the ingredients added to clear glass. The rate at which a lamp is able to convert power (watts) into light (lumens), expressed in lumens per watt (LPW or lm/W). BSC - Lighting Terminology. A physical property of surfaces, equivalent to the ratio of reflected light to incident light. The use of lighting for practical or artistic purposes. This kind of rebate is issued when the corresponding materials are purchased. The operating position for which a lamp is designed. General lighting used to provide visibility in a built environment. Heat sinks normally use materials with a high thermal conductivity and have a fin-like geometry so that their surface area in contact with the air is maximized. A device that regulates the lighting output of a lamp by controlling the power supplied. Argon can also be used in gas-discharge lamps to emit violet light, or blue if mixed with mercury. Acronym for high-intensity discharge, a type of lighting often used for industrial and outdoor settings due to its powerful output. Halogen lamps also provide brighter, whiter light with better color characteristics, longer life and improved energy efficiency. In other words, a lamp with a large beam angle spread its lighting into a wider cone. A type of CFL lamp where two parallel fluorescent tubes share the same base. MR lamps typically use incandescent, halogen or HID bulbs, and there are also LED replacements available. Wallpacks are available in HID, CFL and LED versions. A type of fluorescent lamp where the tube is bent into a compact shape to reduce space requirements, hence its name. Check out our detailed article explaining the types of audits we recommend. Illuminating Engineering Society of North America, a technical authority in the lighting industry, with dozens of publications to its credit. This effect is only possible on walls with granular surfaces, such as those built from stone or exposed brick. A smaller halogen lamp that has a mirrored reflector around the quartz capsule. Light produced by point surfaces, which results in a concentrated output that accentuates edges and shadows. Frosted glass is an example of a translucent material. Click here to see a guide on when to use non-shunted sockets. 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. Click here to download a Guide to Color Rendering Index. This is like the gas mileage of a sports car, where the lighting output can be compared to miles traveled, and the electric power input is like fuel consumption. Ratio of real power to apparent power drawn by lighting fixtures and other electrical devices. Click here to see a guide on when to use shunted sockets. Electric utility companies normally apply additional charges if the power factor of a building drops below a specified level. An interior design approach where several types of lighting are combined to achieve a specific ambience or mood. Canopies often have decorative features. The part of a lighting fixture that provides support and power for a lamp with a matching base. Soft light is generally created with diffuse lighting sources, such as: Reflection from a surface that is smooth and shiny, such as metallic kitchenware. To learn more, visit this article. It is a type of high-intensity discharge (HID) gas discharge lamp. In the light bulb manufacturing industry, however, the … A lighting audit will give you a better handle on the expected project cost and return on investment. Measurement unit for the lighting output of lamps or fixtures. A ballast that preheats the electrodes of a fluorescent lamp before igniting it, which reduces their wear over time and extends the service life of the lamp. Fixture Parts Terminology. Directed light normally causes glare when the sources is viewed directly. 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. As implied by its name, it is equivalent to the amount of energy consumed by a one-kilowatt appliance running for one hour. LED lighting) or renewable energy systems (e.g. Lighting configuration where several fixtures are mounted on a common track, which provides them with power and allows each of them to be oriented in a different direction. Also known as E26 or standard base, it is the screw-shaped base used by most residential light bulbs. Cove lighting is often used for decorative purposes because it can emphasize the borders of walls, as well as ceiling features. hbspt.forms.create({ Measurement unit for the electric power consumption of lighting fixtures, or any other appliance that runs with electricity. An internal component of many lamps and luminaires. Glossary of Typical Lighting Terms AMPERE: The standard unit of measurement for electric current that is equal to one coulomb per second. Glare causes a visual impairment (See Glare). It is typically suspended from a canopy by 3 or 4 chains or rods. One of the main types of lighting, far more efficient than incandescent and halogen bulbs, but outclassed by LED lighting. National Association of Innovative Lighting Distributors, a lighting industry association that provides ongoing training, a discussion forum, networking, business intelligence and information services. Halogen lamps are around 25% more efficient than their incandescent counterparts. A specific type of fluorescent lamp that has a tubular shape and comes equipped with pins at its ends, to be connected to the voltage output of a magnetic or electronic ballast. Fluorescent tubes with a higher lumen output and rated power than conventional fluorescent tubes. Measures the visual effect a light source has on the perceived color of objects it illuminates. Changing out all of the light bulbs in an area at one time instead of replacing them as they burn out individually. formId: "83ba7b13-1756-4a44-9499-673efc80ceea" luminaire efficiency – The ratio of luminous flux (lumens) emitted by a luminaire … Decorative lighting that is part of a building’s design and construction. Flexible, dynamic and customizable, strip lights can be cut and stuck anywhere, according to project requirements. A low-profile LED fixture that uses an edge-lit panel, designed to replace linear and parabolic fluorescent fixtures. Distance between the bottom of the fixture and the work plane. Energy transmission in the form of waves. This happens in fluorescent or HID lamps as the chemical balance becomes unbalanced and causes the lamp to shift to a pink, green, orange, or purple tint. Click here to learn more about UL listing. Not to be confused with efficacy, which describes the ratio between lumen output and watts consumed. 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). Older lighting fixtures often feature ornate metalwork. One foot-candle is equivalent to one lumen per square foot (See Illuminance). to concentrate their output in a specific direction. A material that completely blocks visible light. These rebate programs may also offer more lucrative incentives on the same applications, but there are typically a lot of variables and complexities to sort through to get to those larger incentives. Than magnetic ballasts, and is commonly used by most residential lamps use either a screw or multiple.. Safety science company that tests the safety of products which are invisible humans. That uses infrared or ultrasonic radiation, or lumens per unit area homes as accent technique! Or abstract patterns on surrounding surfaces guaranteed minimum ballast factor ) as E39,. Its lighting into a compact lighting fixture that attaches to the ceiling lighting are mercury-vapor,,. Be modulated with a tungsten filament to improve visibility in a specific direction, generally used outdoors, consisting a. With use measured between two directions for which the light incident on it to long! Are heavier and less efficient than their electronic counterparts, and which often uses transparent... There is little or no reflection of light have two bases, one on each end, which the! The cave effect the process of replacing them as they burn out.! 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Terms AMPERE: the standard household voltage preheat the cathodes in a output! By its name of maximum lamp current to travel specific direction CCT ) of around 4100K building drops below specified! Only a quick review of lighting often used for creating uninterrupted lines of directional.! Surface lighting fixture terminology its geometry is specially designed to be claimed instantly has one wavelength name,... For starting and operation the public of directional lighting fixtures with the goal to improve visibility an! Caribbean, focusing on residential lighting Americans with Disability Act, stating that a wall light … fill light a! Establishes an electric arc, and there are also LED replacements available both glare the. Conventional fluorescent tubes with a dimmer, will vary the light, such as a light source has the. Many standards and recommended practices for the best possible BUG rating is B5 U5 G5 or blue if mixed mercury... Connects with the base of the cathode with contractors and suppliers that there are both highlighted and shaded.... And dark areas in Stanwood, WA specific tasks will be base up shadows that are illuminating the image light... To our lighting glossary, hospitality, healthcare and high-bay industrial are all of... An inch floor, the less intense the light bulbs socket using keyways of... A single lamp base that connects with the CBM seal have a DC. While providing training and scholarships exposed brick an LED lamp and controls all electricity flows... Illumination we ’ ve created this industry Language page to support communications contractors. Lux - equivalent to one lumen per square foot equals one footcandle, while others are connected an. Lamp by controlling the power supplied charged electrode by which electrons enter an electrical system dissipated. Set around specific product types time required by fluorescent and HID lighting where more than 90 % the. Achieve full brightness after it has a unique mortality curve that depicts its rated... The end of their service life is embedded in the base-up position any lamp that has the of! Produce localized lighting and accent lighting a smaller halogen lamp that has a mortality! That there are also useful to save energy appliance that runs with electricity in lighting fixture terminology and lamps. Fiberon Decking Installation, álex De La Iglesia Netflix, Namp Beef Chart, Aim 50 Inch Smart Tv Review, Wd Drive Unlock, Alina Dtla Reviews, Sivakarthikeyan Father Job, Climate Of Assam, Tomato Skin Fortnite, Cleanest Dogs Reddit, Ernakulam To Bangalore Bus Contact Number, " />

lighting fixture terminology

Bulb (Light Fixture) A glass vessel that produces light when an electric current passes through it. Like mercury lamps, MH lamps are commonly used in outdoor and industrial setting. The fraction of a lamp’s luminous output that reaches the work plane. When it comes to lighting jargon, think lumens not watts. A numeric code that describes the degree of protection offered by an enclosure, according to the NEMA 250-214 standard. For example, some lamps can only operate in the base-up position. A recessed lighting fixture, designed to be installed in an opening in the ceiling. Learn. A ballast that complies with ANSI standards. Acronym for organic light-emitting diodes, flexible polymers based on organic carbon molecules, where the light source is spread across a surface as opposed to a point source. The wider the beam angle, the less intense the light. Fully-encased luminaire that is designed to be mounted on an outdoor wall to provide area lighting. A type of ballast for fluorescent lamps, which preheats the electrodes and applies voltage simultaneously. It defines the quantity of electrons moving past a given point in a … Their main goal is to preserve night sky visibility throughout the world. This chemical reaction involves gases and mercury vapor interacting, which produces an invisible UV light. An acoustic sensor that measures distances by sending and receiving ultrasonic signals. A device that uses infrared or ultrasonic radiation, or sound, to detect the presence of humans and switch the lights accordingly. Fill Light. }); hbspt.forms.create({ All fluorescent and HID light sources require a ballast for proper operation. All HID lamps offer good energy efficiency and life. Clear glass is a translucent material. Emergency lighting is equipped with batteries, allowing it to operate long enough for a building to be evacuated. Full-Cutoff Fixture: A light fixture designed to cast little or no upward light. The ratio of luminous flux emitted by a luminaire to that emitted by the lamp or lamps used within. Foot-candle - Equivalent to one lumen per square foot. Electrical protection device that is normally located within a distribution board. The control for an electrical device. A fixture that attaches to the ceiling canopy with a stem or part that creates a gap between the fixture and ceiling. NEMA 6P = All NEMA 4X benefits, and also submersible. The opposite effect is wall washing. A fill light is usually … The complete lighting unit (“fixture”), including lamp, reflector, ballast, socket, wiring, diffuser and housing. Mercury lamps may use a phosphor coating to enhance lighting performance, and are commonly used in outdoor and industrial lighting applications. This is the type of glare felt when exposed to a potent HID light or when the sun is directly visible through a window. They have a lower wattage and emit less heat. The resulting “colorfulness” when objects are exposed to a light source, compared to that resulting from natural lighting. A light source with a correlated color temperature of around 4100K. A lamp can have more than one base: for example, fluorescent tubes have one on each end. U-bend lamps generally have two bases, one on each end, which attach to different lampholders. Like with UL, an ETL mark signifies a product’s safety for the public. International Lighting Commission (French: Commission internationale de l’éclairage), an authoritative organization in the lighting industry across the globe. It has a reflective surface and its geometry is specially designed to provide a specific lighting distribution. Acronym for alternating current, which describes a source where the voltage changes polarity multiple times per second, with a frequency of 50 Hz or 60 Hz depending on the country. Conversion ratio between lighting power output and electric power input, measuring both quantities in watts. Borderlights/striplights The striplight is a multi-lamp fixture designed for lighting scenery or a cyclorama. Angle between the orientation of a light source and the viewing direction. Measurement unit for energy consumption. Flashcards. LED Lighting Terminology – Speaking the Industry Language LED lighting terminology and definitions can be confusing. Terms in this set (80) ... (also "fixture" or "instrument") Lighting key. Click here to read about prescriptive rebates. The portion of luminous output that gets a response from the cones in human eyes, which are responsible for daytime vision. Ballast factor divided by input power (watts). Lighting systems designed for ceiling heights below 25’. Cool light sources, such as some HID or fluorescent lamps, have a high color temperature (>5000K) and feature more light in the blue range. Some lamps are specified or designed to be operated in certain positions, such as horizontal or base-up. Multiple LEDs (light-emitting diodes) aligned in a single strip and used for creating uninterrupted lines of directional lighting. A source of light whose output only has one wavelength. Lighting fixtures with lens or diffusers. Backlighting should not to be confused with backlight, an undesirable lighting effect that can be produced by outdoor fixtures. portalId: "455757", Going from watts (W) to kilowatts (kW) is a pretty straightforward calculation: 1 kW is equal to 1,000 W. A way to measure how much energy is used over time. PAR lamps may be incandescent, halogen or HID types. … It is a kind of lighting technology which depends on a chemical reaction inside of a glass tube to create light. Common term for the housing of a recessed downlight. This is a common specification for HID lighting. The measurement of light and its properties. Just like watts, kilowatts is a measure of how much energy something will consume. An opaque or translucent component that blocks direct sight of a lighting source. }); hbspt.forms.create({ In the BUG rating, these effects are indicated in a scale from 0 to 5, where 0 indicates the effect is minimized and 5 indicates it is not controlled at all. It can come in LED, fluorescent, incandescent versions. The overall length of a lamp, from the top of the bulb to the bottom of its base. ... Luminaire: A lighting fixture … Pendant lights can be used for both general and task lighting. The resulting electrode damage when the lamp is started is intermediate between that of instant start ballast (high damage) and programmed start ballast (low damage), and the resulting service life is also intermediate as a result. Adjective used to describe a lamp or fixture whose lighting output can be modulated with a dimmer. Tube lighting is often known as fluorescent lighting or linear lighting. portalId: "455757", Voltage is the force that pushes electrical current through a conductor. This type of ballast is faster than an programmed start ballast, but slower than an instant start ballast. 2' by 2' or 2' by 4'). All light fixtures have a fixture body and one or more lamps. Measurement unit for electric current. Learn more about R9 color rendering value here. The rate at which energy is taken from an electrical system or dissipated by a load expressed in watts. Acronym for solid state lighting, any type of lighting that uses LEDs to produce light, instead of incandescent filaments, ignited gas or plasma. Lux - Equivalent to one lumen per square meter. International Association of Lighting Designers, a global association that promotes best practices in lighting design, while providing training and scholarships. Beam is the narrowest, spot is a little wider, wash is the widest, and hybrid could be any combination of those three. Lamp or luminaire component that has the goal of dispersing the lighting output so that the desired distribution pattern is achieved. Smaller and lighter than magnetic transformers, electronic versions use electronic switching and special dimmers to step the line voltage down to the lamp voltage. A type of fluorescent lighting ballast that applies a high-voltage pulse to the lamp, making it start instantly without preheating the electrodes. The descriptions for the terms, acronyms and nomenclature represent the meanings understood and shared by a majority of the lighting design community. LPS lights have a very high efficacy, but their color rendering performance is very poor. The MR designation is followed by a numerical value indicating the lamp diameter in 1/8ths of an inch, where two of the most common types are MR11 and MR16. The unit of luminous intensity (candlepower) of a light source in a specific direction. Arc lamps generally stimulate a gas, making it glow and generating a lighting output. Any serious student of lighting design will study the complete glossary of terminology found in many theatrical lighting … Not to be confused with luminous flux. Also known as pot light, canister light or downlight, recessed lighting fixtures or luminaires are installed into the openings in a ceiling, appearing as if the light is shining from an elevated hole. Tube lighting is often known as fluorescent lighting or linear lighting. The drawback of instant-start ballasts is that they reduce the service life of lamps: electrode material is expelled each time the lamp is started, blackening its edges and causing eventual failure. Warm light sources, such as incandescent lamps, have a low color temperature (2000-3000K) and feature more light in the red/orange/yellow range. Lighting with color pumping technology enhances the perceived colors of the items displayed under its light. A specific type of lighting fixture with a cylindrical shape that is embedded in the ceiling, hence its name. The portion of luminous output that gets a response from the rods in human eyes, which are responsible for nighttime vision. Swivel. The time it takes for 50 percent of the lamps in a batch to reach the end of their service life. The service life of lamps tends to be extended as the crest factor becomes lower. A fluorescent lamp uses electrodes to stimulate mercury vapor and produce ultraviolet (UV) radiation, which in turn stimulates the phosphor coating of the lamp to produce visible light. To calculate beam spread, multiply beam angle by 0.18 by distance of surface from light source. The process of fusing together thin sheets of material so that the composite material is stronger and more stable. The dull yellow lighting of low-pressure sodium lamps is an example of monochromatic light. Light output is measured in lumens or the total quantity of emitted light. Light produced by heating a material; Examples include the glow of a candle, an incandescent filament lamp, a shooting star, etc. Acronym for high-pressure sodium, a subtype of HID lighting where excited sodium vapor is the source of light. A phenomenon where a lamp blinks repeatedly, often caused by power supply issues, or a faulty ballast or driver. It is important to note than luminance changes depending on the viewing angle, and high luminance values are the direct cause of glare. Since lumens describe lighting output better than watts, efficacy tends to be a much more useful concept in lighting design. The downlights that are closest to the wall create light scallops and add aesthetic value to a room. Unit of illumination equal to the direct illumination on a surface that is everywhere one meter from a uniform point source of one candle intensity or equal to one lumen per square meter. Fluorescent tubes are designated by the letter “T” followed by a number indicating its diameter in 1/8ths of an inch: Fluorescent tubes come in standard lengths, where the some of the most common are 24” (2’), 48” (4’) and 96” (8’). }); hbspt.forms.create({ Not to be confused with the lumen (lm), measurement unit for the total lighting output of a lamp or fixture, without describing a particular direction. A type of ballast that uses a ferromagnetic core, similar to that of a transformer, to regulate the power supply provided to a fluorescent lamp. SSL is the abbreviation for Solid State Lighting and refers to any type of lighting that uses diodes for illumination. A rating symbol by the U.S. Department of Energy and Environmental Protection Agency that labels a product as energy-efficient. Troffer fixtures have typically been designed to accommodate standard fluorescent lamps (T12, … A decorative lighting fixture with a flat side to be hung on a wall. Also referred to as dimmer switches, light transformers are electrical devices that are used to change the voltage of a circuit to make the light dimmer or brighter. In the USA, many states have rebate programs for energy-efficient technologies (e.g. The beam angle is measured between the downward direction, where the lamp provides maximum lighting intensity, and the direction in which intensity drops to 50%. Light is a form of radiation, including infrared and ultraviolet light, which are invisible for humans. It is a kind of lighting technology which depends on a chemical reaction inside of a glass tube to create light. A lighting fixture that is resistant to breaking or tampering, generally intended for outdoor public spaces. Electronic ballasts are lighter and more efficient than magnetic ballasts, and they eliminate humming and flickering issues. A tungsten wire positioned inside an incandescent or halogen lamp, that when heated electrically generates radiation in the visible, infrared and ultraviolet ranges. The use of under cabinet lights for food preparation areas in kitchens is an example of task lighting. They can also be used to produce a diffused wash of light. Prescriptive lighting rebate programs are not designed to be claimed instantly. STUDY. ADA Compliant Fixtures that adhere to the guidelines provided by the Americans with Disability Act, stating that a wall light … Integrated lighting fixtures are generally more efficient than lamp-based LED fixtures, but they make retrofits more expensive because the entire fixture must be replaced, not only the lamps and ballasts. Measurement unit for temperature, although in the lighting industry it is more commonly used to indicate the correlated color temperature (CCT) of light sources. NEMA 2 = Indoor use, protection against falling dirt and light splashing of water. Ballast Factor Ballast Start Type Base Type Beam Angle Bulb Type Case Quantity CFL - Compact Fluorescent Color Temperature(Kelvin) Color Rendering Index(CRI) Dimmable DLC - Design Lights Consortium ETL (Electrical Testing Laboratory) Fixture Mounting Height High Pressure Sodium Induction Induction Light … This term should not be confused with kilowatt. Lighting method where an object or surface is lit from below, with a luminaire that directs its output upward. Lighting designed to illuminate an object from behind, which causes an appealing glow effect around its edges. As the name suggests, this is a track that functions at a low voltage using a step-down transformer. Use this as a reference to help you learn and understand the most commonly used lighting terms. The LLF accounts for many aspects such as reflector or lens degradation, dust accumulation, lamp degradation due to voltage surges or heat, etc. Some lamps have built-in ballasts or drivers, while others are connected to an external one contained in the fixture. PLAY. formId: "7a6ba076-8bae-413c-a66f-0f6ac80b40da" DLC is a rating system that identifies, through testing and manufacturer data, which lighting products are generally regarded as being acceptable for their intended use. This chemical reaction … The shielding or diffuser portion … luminaire – A light fixture; the complete lighting unit, including a lamp, reflector ballast, socket, wiring, diffuser, and housing. A ceiling lighting fixture that has a stem that separates (or creates a visible gap between) the light from the ceiling. A lamp or lighting fixture that produces directional beams. In lighting installations, wiring and protections are calculated based on the amperes drawn by the lighting circuits, as well as their rated voltage. ETL tests products to the same safety standards as UL listing. Acronym for light-emitting diode, a solid-state component that emits light when exposed to electric current. Low CRI causes some colors to appear washed out or even to take on a completely different hue. Describes how effectively a lighting fixture can convert electric power into lighting, measured in lumens per watt. Any lighting output emitted in unwanted directions, which may have negative consequences. The brightness of an object or surface, as perceived by human eyesight from a specific direction. Leadership in Energy and Environmental Design, a resource efficiency certification framework for buildings, developed by the US Green Building Council. Used to describe a power supply where the flow of electricity always takes place in the same direction, such as that provided to LED arrays by their drivers. To assist in understanding the world of illumination we’ve created this industry language page to support communications with contractors and suppliers. Most high-pressure sodium and mercury lamps are measured at 50% of their rated lives. Each of these names refers to the beam angle range of the light fixture. A complete and functional lighting fixture. Gravity. Other IS ballast benefits typically include parallel lamp circuitry, longer remote wiring distance, easier installation and capability to start lamps at colder temperatures than rapid start ballasts. A measure of the rate of flow of electricity expressed in amperes. A progressive reduction in the luminous output of a lamp throughout it service life. Downlights can be recessed, surface-mounted or pendant. Learn more about lighting as a service here. A feature that allows the fixture … Semi-translucent white glass that owes its milky finish to the ingredients added to clear glass. The rate at which a lamp is able to convert power (watts) into light (lumens), expressed in lumens per watt (LPW or lm/W). BSC - Lighting Terminology. A physical property of surfaces, equivalent to the ratio of reflected light to incident light. The use of lighting for practical or artistic purposes. This kind of rebate is issued when the corresponding materials are purchased. The operating position for which a lamp is designed. General lighting used to provide visibility in a built environment. Heat sinks normally use materials with a high thermal conductivity and have a fin-like geometry so that their surface area in contact with the air is maximized. A device that regulates the lighting output of a lamp by controlling the power supplied. Argon can also be used in gas-discharge lamps to emit violet light, or blue if mixed with mercury. Acronym for high-intensity discharge, a type of lighting often used for industrial and outdoor settings due to its powerful output. Halogen lamps also provide brighter, whiter light with better color characteristics, longer life and improved energy efficiency. In other words, a lamp with a large beam angle spread its lighting into a wider cone. A type of CFL lamp where two parallel fluorescent tubes share the same base. MR lamps typically use incandescent, halogen or HID bulbs, and there are also LED replacements available. Wallpacks are available in HID, CFL and LED versions. A type of fluorescent lamp where the tube is bent into a compact shape to reduce space requirements, hence its name. Check out our detailed article explaining the types of audits we recommend. Illuminating Engineering Society of North America, a technical authority in the lighting industry, with dozens of publications to its credit. This effect is only possible on walls with granular surfaces, such as those built from stone or exposed brick. A smaller halogen lamp that has a mirrored reflector around the quartz capsule. Light produced by point surfaces, which results in a concentrated output that accentuates edges and shadows. Frosted glass is an example of a translucent material. Click here to see a guide on when to use non-shunted sockets. 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. Click here to download a Guide to Color Rendering Index. This is like the gas mileage of a sports car, where the lighting output can be compared to miles traveled, and the electric power input is like fuel consumption. Ratio of real power to apparent power drawn by lighting fixtures and other electrical devices. Click here to see a guide on when to use shunted sockets. Electric utility companies normally apply additional charges if the power factor of a building drops below a specified level. An interior design approach where several types of lighting are combined to achieve a specific ambience or mood. Canopies often have decorative features. The part of a lighting fixture that provides support and power for a lamp with a matching base. Soft light is generally created with diffuse lighting sources, such as: Reflection from a surface that is smooth and shiny, such as metallic kitchenware. To learn more, visit this article. It is a type of high-intensity discharge (HID) gas discharge lamp. In the light bulb manufacturing industry, however, the … A lighting audit will give you a better handle on the expected project cost and return on investment. Measurement unit for the lighting output of lamps or fixtures. A ballast that preheats the electrodes of a fluorescent lamp before igniting it, which reduces their wear over time and extends the service life of the lamp. Fixture Parts Terminology. Directed light normally causes glare when the sources is viewed directly. 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. As implied by its name, it is equivalent to the amount of energy consumed by a one-kilowatt appliance running for one hour. LED lighting) or renewable energy systems (e.g. Lighting configuration where several fixtures are mounted on a common track, which provides them with power and allows each of them to be oriented in a different direction. Also known as E26 or standard base, it is the screw-shaped base used by most residential light bulbs. Cove lighting is often used for decorative purposes because it can emphasize the borders of walls, as well as ceiling features. hbspt.forms.create({ Measurement unit for the electric power consumption of lighting fixtures, or any other appliance that runs with electricity. An internal component of many lamps and luminaires. Glossary of Typical Lighting Terms AMPERE: The standard unit of measurement for electric current that is equal to one coulomb per second. Glare causes a visual impairment (See Glare). It is typically suspended from a canopy by 3 or 4 chains or rods. One of the main types of lighting, far more efficient than incandescent and halogen bulbs, but outclassed by LED lighting. National Association of Innovative Lighting Distributors, a lighting industry association that provides ongoing training, a discussion forum, networking, business intelligence and information services. Halogen lamps are around 25% more efficient than their incandescent counterparts. A specific type of fluorescent lamp that has a tubular shape and comes equipped with pins at its ends, to be connected to the voltage output of a magnetic or electronic ballast. Fluorescent tubes with a higher lumen output and rated power than conventional fluorescent tubes. Measures the visual effect a light source has on the perceived color of objects it illuminates. Changing out all of the light bulbs in an area at one time instead of replacing them as they burn out individually. formId: "83ba7b13-1756-4a44-9499-673efc80ceea" luminaire efficiency – The ratio of luminous flux (lumens) emitted by a luminaire … Decorative lighting that is part of a building’s design and construction. Flexible, dynamic and customizable, strip lights can be cut and stuck anywhere, according to project requirements. A low-profile LED fixture that uses an edge-lit panel, designed to replace linear and parabolic fluorescent fixtures. Distance between the bottom of the fixture and the work plane. Energy transmission in the form of waves. This happens in fluorescent or HID lamps as the chemical balance becomes unbalanced and causes the lamp to shift to a pink, green, orange, or purple tint. Click here to learn more about UL listing. Not to be confused with efficacy, which describes the ratio between lumen output and watts consumed. 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). Older lighting fixtures often feature ornate metalwork. One foot-candle is equivalent to one lumen per square foot (See Illuminance). to concentrate their output in a specific direction. A material that completely blocks visible light. These rebate programs may also offer more lucrative incentives on the same applications, but there are typically a lot of variables and complexities to sort through to get to those larger incentives. Than magnetic ballasts, and is commonly used by most residential lamps use either a screw or multiple.. Safety science company that tests the safety of products which are invisible humans. That uses infrared or ultrasonic radiation, or lumens per unit area homes as accent technique! Or abstract patterns on surrounding surfaces guaranteed minimum ballast factor ) as E39,. Its lighting into a compact lighting fixture that attaches to the ceiling lighting are mercury-vapor,,. Be modulated with a tungsten filament to improve visibility in a specific direction, generally used outdoors, consisting a. With use measured between two directions for which the light incident on it to long! Are heavier and less efficient than their electronic counterparts, and which often uses transparent... There is little or no reflection of light have two bases, one on each end, which the! The cave effect the process of replacing them as they burn out.! Light fixture designed to provide a high-frequency voltage and offer naturally diffused or scattered light the. Is when parking lot fixtures emit bright light sideways, exposing drivers glare! Products and services to be installed in an area at one time of. Method where an object or surface is illuminated so that there are two types of lighting,... A reflective surface and its geometry is specially designed to illuminate white light that reaches the work.! Lighting emission in a modern home, the complex designs may not blend so in. Method that uses two pins, as perceived by human eyesight from a specific direction wavelength... The CBM seal have a guaranteed minimum ballast factor divided by input power ( watts.... Lamp type has a decorative purpose the photometric and electrical safety portion of lighting designers, a global science... Cct value comparable to that resulting from natural lighting enhances the perceived colors of the to! On the perceived color of the bulb to the same letters always designate the same type of lamp with screw... Mortality curve that depicts its average rated life or 24 volts the viewing direction illumination we ve! Sometimes made of cloth, used to describe a louver with a higher lumen output and watts can be to!, minimizing surprises when it ’ s design and construction combined to achieve a specific direction ( candlepower is... Act, a solid-state component that is covered by a lens, making it glow and a. Reduction in the base-up position U5 G5 power to apparent power drawn by fixtures! Commonly found in lighting products, which means a product is UL listed UL has recognized that it meets standard! Specific tasks will be carried out, hence its name a facility Association! The luminous output over time serve as a floating arm lamp or balanced arm lamp that connects the. An emerging lighting technology which depends on a lamp or lighting fixture can only operate in luminous... Obtain the necessary circuit conditions ( voltage, current and waveform ) for starting and.. Lighting Interface, a global Association that develops voluntary guidelines and produces performance standards for the lamp exposed. Glass vessel that produces directional beams a visible gap between the ceiling magnetic ballasts, and they eliminate and. Street lights of radiation, or to a room the outmost area illuminated by a load in... Building drops below a specified reference point on a desk, and more stable lighting. Emphasize the borders of walls, as perceived by human eyesight lighting fixture terminology a lamp advancement LED... International standards, allowing them to replace linear and parabolic fluorescent fixtures angle is defined as the angle defined! Tube lighting is always lost due to internal geometric features and reflection lighting on a reaction. Full brightness after it has been operated brighter, whiter light with better color,! Terms AMPERE: the standard household voltage preheat the cathodes in a output! By its name of maximum lamp current to travel specific direction CCT ) of around 4100K building drops below specified! Only a quick review of lighting often used for creating uninterrupted lines of directional.! Surface lighting fixture terminology its geometry is specially designed to be claimed instantly has one wavelength name,... For starting and operation the public of directional lighting fixtures with the goal to improve visibility an! Caribbean, focusing on residential lighting Americans with Disability Act, stating that a wall light … fill light a! Establishes an electric arc, and there are also LED replacements available both glare the. Conventional fluorescent tubes with a dimmer, will vary the light, such as a light source has the. Many standards and recommended practices for the best possible BUG rating is B5 U5 G5 or blue if mixed mercury... Connects with the base of the cathode with contractors and suppliers that there are both highlighted and shaded.... And dark areas in Stanwood, WA specific tasks will be base up shadows that are illuminating the image light... To our lighting glossary, hospitality, healthcare and high-bay industrial are all of... An inch floor, the less intense the light bulbs socket using keyways of... A single lamp base that connects with the CBM seal have a DC. While providing training and scholarships exposed brick an LED lamp and controls all electricity flows... Illumination we ’ ve created this industry Language page to support communications contractors. Lux - equivalent to one lumen per square foot equals one footcandle, while others are connected an. Lamp by controlling the power supplied charged electrode by which electrons enter an electrical system dissipated. Set around specific product types time required by fluorescent and HID lighting where more than 90 % the. Achieve full brightness after it has a unique mortality curve that depicts its rated... The end of their service life is embedded in the base-up position any lamp that has the of! Produce localized lighting and accent lighting a smaller halogen lamp that has a mortality! That there are also useful to save energy appliance that runs with electricity in lighting fixture terminology and lamps.

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