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The SEAS Electric Light Source Ontology.

The SEAS Electric Light source ontology describes Electric light sources. The figure below shows an overview of the electric light source taxonomy. LightsourceTaxonomy



Label: Ceramic Metal Halide Lamp


The ceramic discharge metal-halide (CDM) lamp, often referred to as Ceramic Metal Halide lamp (CMH) is a source of light that is a type of metal-halide lamp which is 10-20% more efficient than the traditional quartz metal halide and produces a superior color rendition (80-96 CRI). (source:wikipedia)


Label: Color Rendering Index Evaluation


The class of evaluation for color rendering index properties


Label: Color Rendering Index Property


A color rendering index (CRI) is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with an ideal or natural light source. (source:wikipedia)


Label: Color Temperature Evaluation


The class of evaluation for color temperature properties


Label: Color Temperature Property


The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of a color comparable to that of the light source. Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, manufacturing, astrophysics, horticulture, and other fields.(source:wikipedia)


Label: Compact Fluorescent Lamp


A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light, and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for incandescent bulbs. The lamps use a tube which is curved or folded to fit into the space of an incandescent bulb, and a compact electronic ballast in the base of the lamp. (source: wikipedia)


Label: Electric Light Source


An electric light is a device that produces visible light by the flow of electric current. It is the most common form of artificial lighting and is essential to modern society, providing interior lighting for buildings and exterior light for evening and nighttime activities. In technical usage, a replaceable component that produces light from electricity is called a lamp. (source: Wikipedia).


Label: Fluorescent Tube


A fluorescent lamp or a fluorescent tube is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps. The typical luminous efficacy of fluorescent lighting systems is 50–100 lumens per watt, several times the efficacy of incandescent bulbs with comparable light output. (wikipedia:Source)


Label: Gas Discharge Lamp


Gas-discharge lamps are a family of artificial light sources that generate light by sending an electrical discharge through an ionized gas, a plasma. Typically, such lamps use a noble gas (argon, neon, krypton, and xenon) or a mixture of these gases. Some include additional substances, like mercury, sodium, and metal halides, which are vaporized during startup to become part of the gas mixture. (source:wikipedia)


Label: Halogen Lamp


A halogen lamp, also known as a tungsten halogen, quartz-halogen or quartz iodine lamp, is an incandescent lamp that has a small amount of a halogen such as iodine or bromine added. The combination of the halogen gas and the tungsten filament produces a halogen cycle chemical reaction which redeposits evaporated tungsten to the filament, increasing its life and maintaining the clarity of the envelope. Because of this, a halogen lamp can be operated at a higher temperature than a standard gas-filled lamp of similar power and operating life, producing light of a higher luminous efficacy and color temperature. The small size of halogen lamps permits their use in compact optical systems for projectors and illumination. (source: wikipedia)


Label: High Pressure Discharge Lamp


High-pressure lamps have a discharge that takes place in gas under slightly less to greater than atmospheric pressure. For example, a high pressure sodium lamp has an arc tube under 100 to 200 torr pressure, about 14% to 28% of atmospheric pressure; some automotive HID headlamps have up to 50 bar or fifty times atmospheric pressure. (source:wikipedia)


Label: High Pressure Mercury Lamp


A High pressure mercury-vapor lamp is a high pressure gas discharge lamp that uses an electric arc through vaporized mercury under high pression to produce light. (source:wikipedia)


Label: High Pressure Sodium Lamp


High-pressure sodium lamps are high pressur gas discharge lamp which produce a broader spectrum of light than the low-pressure lamps, but they still have poorer color rendering than other types of lamps. Low-pressure sodium lamps only give monochromatic yellow light and so inhibit color vision at night. They have been widely used in industrial lighting, especially in large manufacturing facilities, and are commonly used as plant grow lights. They have also been widely used for outdoor area lighting, such as on roadways, parking lots and security areas. (source: wikipedia)


Label: Incandescence Light


Incandescence Light are Electric Light Source which produce light by a filament heated white-hot by electric current. (source: wikipedia)


Label: Incandescent Lamp


An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated to such a high temperature that it glows with visible light (incandescence). The filament, heated by passing an electric current through it, is protected from oxidation with a glass or quartz bulb that is filled with inert gas or evacuated. In a halogen lamp, filament evaporation is prevented by a chemical process that redeposits metal vapor onto the filament, extending its life. The light bulb is supplied with electric current by feed-through terminals or wires embedded in the glass. Most bulbs are used in a socket which provides mechanical support and electrical connections. (source: wikipedia)


Label: Induction Lamp


Induction light is a gas discharge lamp in which the power required to generate light is transferred from outside the lamp envelope to the gas inside via an electric or magnetic field, in contrast with a typical gas discharge lamp that uses internal electrodes connected to the power supply by conductors that pass through the lamp envelope (source:wikipedia)


Label: LED Lamp


An LED lamp is a light-emitting diode (LED) product which is assembled into a lamp (or light bulb) for use in lighting fixtures. LED lamps have a lifespan and electrical efficiency which are several times greater than incandescent lamps, and are significantly more efficient than most fluorescent lamps, with some chips able to emit more than 300 lumens per watt (as claimed by Cree and some other LED manufacturers).


Label: Low Pressure Discharge Lamp


Low-pressure lamps have working pressure much less than atmospheric pressure. For example, common fluorescent lamps operate at a pressure of about 0.3% of atmospheric pressure. (source: wikipedia)


Label: Low Pressure Mercury Lamp


A Low pressure mercury-vapor lamp is a low pressure gas discharge lamp that uses an electric arc through vaporized mercury under low pression to produce light. (source:wikipedia)


Label: Low Pressure Sodium Lamp


Low-pressure sodium lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. They are highly efficient electrical light sources, but their yellow light restricts applications to outdoor lighting such as street lamps. (source : wikipedia)


Label: Luminous Efficacy Evaluation


The class of evaluation for Luminous Efficacy properties


Label: Luminous Efficacy Property


Luminous efficacy is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power, measured in lumens per watt in SI.(source:wikipedia)


Label: Luminous Energy Evaluation


The class of evaluation for Luminous Energy properties


Label: Luminous Energy Property


In photometry, luminous energy is the perceived energy of light. This is sometimes called the quantity of light.(source:wikipedia)


Label: Luminous Flux Evaluation


The class of evaluation for Luminous Flux properties


Label: Luminous Flux Property


In photometry, luminous flux or luminous power is the measure of the perceived power of light.(source:wikipedia)


Label: Luminous Flux Evaluation


The class of evaluation for Luminous Intensity properties


Label: Luminous Intensity Property


In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye. The SI unit of luminous intensity is the candela (cd), an SI base unit.(source:wikipedia)


Label: Metal Halide Lamp


A metal-halide lamp is a high-intensity discharge (HID) gas discharge lamp which is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides (compounds of metals with bromine or iodine). It is a type of high-intensity discharge (HID) gas discharge lamp. (source:wikipedia)

Object Properties


Label: color rendering index


The color rendering index of some light source.


Label: colorTemperature


The color temperature of some light source.


Label: luminous efficacy


The luminous efficacy of some light source.


Label: luminous energy


The luminous energy of some light.


Label: luminous flux


The luminous flux of some light source.


Label: luminous intensity


The luminous intensity of some light.