Transcription of NOT SO SCARY LIGHTING MATH - RS Lighting …
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NOT SO SCARY LIGHTING MATH - RS Lighting …
LIGHTING MathNOT SO SCARY LIGHTING MATHNOT SO SCARY LIGHTING MATHM ethods to Calculate LightPointPoint--byby--PointPoint Direct Illumination from a Fixture or Lamp You Photometry Distances from Fixture or LampLumen MethodLumen Method Average Light Level in a Room from a Fixture You Photometry Room Dimensions and Surface Reflectance'sLighting MathDirection of Light Goal of a luminaire is to put light where the user needs it Convenient way to classify luminaires is by the directionof light emitted from the luminaire Commission Internationale de l Eclairage (CIE) sets up these classificationsCIE Luminaire Types / DistributionsDirectSemi-DirectGeneral Diffuse(IES) Direct-IndirectSemi-IndirectIndirectLigh ting MathCandlepower Distribution Curve Candlepower Candlepower distribution curvesdistribution curvesprovides intuitive information on how aluminairewill perform CandelaCandelavalues are used in calculations to predict light levels0 deg102030405060708090 deg3003006006009009001200120015001500 Distribution anglesCandle Power DistributionAsymmetrical Distribution CurvePerpendicular 90 degreesCandlepower DistributionCandlepower DistributionParallel 0 degreesCandlepower DistributionCandlepower DistributionRectangular Tubular Fluourescent fixtureRectangular Tubular Fluourescent fixture90 deg
Lighting Math Direction of Light • Goal of a luminaire is to put light where the user needs it • Convenient way to classify luminaires is by the direction of light ...
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