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Lighting Glossary

Lighting Terms and Definitions

#

0-10V Dimming

A

A15 BulbA19 Bulba21 bulbAccent LightingAcrylic and PolycarbonateADA CompliantAdaptationadaptive lightingAlaAlternating Current (AC)Aluminium ReflectorAmbient LightAmbient Light SensorAmbient TemperatureAmerican National Standards Institute (ANSI)Ampereanchor lightAnodeApplication Specific LED Packaging (ASLP) Arc Tubeartificial lightAverage Rated Life

B

B10 BulbBacklightBaffleBallastBallast Efficacy Factor (BEF)Ballast Factor (Bf)BaseBase DownBase UpBayonet CapBeam AngleBeam Spreadblack lightBlack Light BlueBlue LightBollard LightBoob LightBR30 Light BulbBrightnessBrushed FinishBUG RatingBulb Base

C

C7 BulbC9 BulbCanCan LightCandela(cd)CandleCandle LightCanopyCapCave EffectCeiling LightCenter Beam Candlepower (CBCP)Certified Ballast Manufacturers Association (CBMA)ChandelierChromaticityChrome Capcircadian lightingCircline LampCircuit BreakerClearance Lightcob lightCoefficient of Utilization (CU)Coherent LightCold Cathode Fluorescent Lamp (CCFL)Color PumpingColor Quality Scale (CQS)Color RenderingColor Rendering Index (CRI)Color ShiftingColor TemperatureColor TuningColor UniformityCompact Fluorescent Lamp (CFL)Constant-Wattage Autotransformer (CWA)Continuous DimmingContour LightCool WhiteCopper WireCorrelated Color Temperature (CCT)Cosine LawCove LightingCurrentCurrent Crest FactorCustom RebateCut Off Angle (of a Luminaire)Cutoff AngleCutoff DistributionCutoff Fixture

D

DALIDamp LocationDamp Rated LightingDark Adaptationday lightingDaylight BulbDaylight LampDelivered LumensDesk LampDichroicDie-CastDiffused LightDiffuserDimmable Light BulbDiodeDirect Current (Dc)Direct GlareDirect LightingDischarge BulbDischarge LampDiscomfort GlareDiscrete LED ModuleDLC ListedDoor LightDouble EndedDouble Pole Light SwitchDownlightingDriverDriver RatingDRL LightDual VoltageDusk to Dawn Light

E

e12 bulbE17 BulbE26 BulbE26/E27Economic LifeEdge Lit LedEdison BaseEdison BulbEfficacyElectromagnetic BallastElectromagnetic SpectrumElectronic BallastElectronic TransformerEllipsoidal Reflector Lamp (Er Lamp)ELV DimmingEnclosed Light FixtureEnergy StarEquivalent WattageESCOETL

F

Fairy LightFar Red LightFenestrationFestoon LightingFill Lightfiltered lightFixtureFixture EfficiencyFixture LumensFixture WattsFlickerFlood LightFluorescent LightFluorescent TubeFlush Mount LightFluxFocused LightFoot-Candle (Fc)Frosted LensFull Spectrum LightFully shielded fixture

G

G25 BulbG40 Bulbg9 bulbGhost LightGlareGroup RelampGu

H

H11 BulbHalogen LampharmonicHeat LightingHID LampHigh BayHigh Pressure Sodium (HPS)High Voltage LampHigh-Bay LightingHigh-Efficiency Plasma (HEP)High-Intensity DischargeHouse-side Shield

I

IALDIC Rated LightIC Rated Recessed LightingIEEEIES FilesIesnaIlluminanceIlluminationIncandescenceIncandescent Filament LampIncandescent LightIndirect LightingIndoor PositioningInduction LampInfrared Radiation (IR)Ingress ProtectionIngress Protection (IP) RatingInstant Start (IS)Insulated Ceiling (IC) FixtureIntensityInternational Dark-Sky Association (Ida)International Electrotechnical Commission (IEC)IR Light

J

JouleJunction Box

K

KelvinKey LightingKeyless Light Fixture

L

LampLamp LifeLamp VoltageLampholderLaser LightLeading Edge DimmerLED Conversion (LED Retrofit)LED Light SpectrumLED Package (High Power)LeedLensed TrofferLevel of IlluminationlightLight Center Length (LCL)Light DiffuserLight DistributionLight Emitting Diode (LED)Light Loss Factor (LLF)Light PollutionLight QualityLight ReflectionLight ScatteringLight SourceLight SpectraLight TransformerLight TrespassLighting as a Service (LaaS)Lighting AuditLighting ControlLighting Design Lumens (LDL)Lighting TerminologyLM-70LM-79LM-80Load WireLong LifeLouverlow lightLow Voltage LightingLow-Pressure Sodium (LPS) LampLumen DepreciationLumen MaintenanceLumens (lm)Lumens per WattLumens To WattsLuminaireLuminaire EfficiencyLuminance ContrastLuminance RatioLuminariesLuminous CeilingLuminous FluxLuminous IntensityLux

M

Magnetic BallastMarine Gradematte surfaceMean LumensMedium Base BulbMedium LightMercury Vapor LampMetal Halide (Mh)Mili-Candela (MCD)Mirror ReflectorMOCVDMogul BaseMonochromatic LightMood LightingMoon LightingMotion SensorMounting HeightMultifaceted Reflector

N

National Institute of Standards and Technology (NIST)NEMANEMA Enclosure TypeNeon LightNight LightNoid LightNominal LumensNominal WattsNoon LightNorthern Light

O

OledOpal GlassOpaque MaterialOpen Rated Lamp (Mogul Base)Operating PositionOptical SystemOrdinances (Municipal)Overhead Lighting

P

PARPAR BulbPar LightPar38 BulbParallel CircuitPassive Infrared DetectionPendantPendant LightPhase-Controlled DimmingPhosphor ConversionPhotocellphotocell lightPhotometricPhotopic LumensPlanned Lighting MaintenancePN JunctionPost LightPotentiometerPowerPower Factor (Pf)PreheatPrescriptive RebateProgrammed Start Ballastpuck lightPull Down Light Fixture PartsPulse Start Ballast

Q

Quantity of Light

R

R9 Color Rendering ValueRadiant EnergyRadiationRadio Frequency Interference (RFI)Rated Lamp LifeRated LifeRecessed CanRecessed LightRecessed LightingReference BallastReflectanceReflected GlareReflectionReflective Lamp ShadeReflectorRefractionRefractorRestrike TimeRGB LightRim LightRing LightRohs ComplianceRoom Utilization Factor

S

Scotopic LumensSelf-Ballasted LampSemi FlushShadeShieldingShunted SocketsSilicaSilicateSiliconesSingle Pole Light SwitchSmart Light SwitchSmart LightingSocketSoft LightSolid StateSpectral Power Distribution (SPD)Specular ReflectionSpotlightStrain ReliefStray lightStrikingStrip LightSwitched-Mode Power Supply (SMPS)

T

t10 bulbT12 BulbT5 BulbT5 Lightt8 fluorescent bulbTask LightingTea Light CandleThree Way Light SwitchTimersTM-21TorchiereTotal Cost Of Ownership (TCO)TransmissionTransparent MaterialTri-DimmingTriac DimmingTrofferTube LightingTungsten HalogenTwin TubeType A Bulbtype b bulbType C BulbType G Bulbtype t bulb

U

U-Bend LampUL ListingUltrasonic SensorUltraviolet LightUnder Cabinet LightingUniformityUplightingUV LightUVA LightUVB LightUVC Light

V

Valance LightingVandal-Resistant FixtureVanity LightVeiling LuminanceVisible Light SpectrumVisual TaskVlogging LightVSC Light

W

WAC LightingWafer LightWall GrazingWall Pack LightWall SconceWall Wash LightingWall Washer LightWallpackWarm LightWarm WhiteWatts To LumensWeatherproofWork Plane

Z

ZenithZodiacal Light
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