7/31/2019 Artifical Lighting Datasheet

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ARTIFICIALLIGHTING PRACTICAL DATASHEET

Group Colour Rendition Index Importance Typical application1A 90 -100 accurate colour matching galleries, medical, colour mixing1B 80 - 90 accurate colour judgement home, hotels, offices, schools2 60 - 80 moderate colour rendering industry, offices, schools, warehouses3 40 - 60 accurate colour rendering is of little importance outdoor, industry, sports halls4 20 - 40 accurate colour rendering is of no importance outdoor, road and motorway lighting

Light sourceColour

Temperature(Kelvin)

ColourRendition

IndexSodium (High Pressure) LPS/SOX 1800 ~5

Mercury Vapour (Clear) 6410 17

Sodium HPS/SON 2100 24

Mercury Vapour (Coated) 3600 49

Fluorescent Warm White (Halophosphate) 2940 51

Fluorescent Cool White (Halophosphate) 4230 64

Fluorescent Warm White (Tri-Phosphor) 2940 73

Fluorescent Cool Daylight (Halophosphate) 6430 76

Sodium "White (High Pressure) SON 2700 82

Metal Halide (Quartz ) 4200 85

Fluorescent Cool White (Tri-Phosphor) 4080 89

Metal Halide (Ceramic) 5400 96

Incandescent/Halogen Light Bulb 3200 100

Activity Description Illuminance(lux) Limiting Glare IndexFine Assembly Work 1000 22

Drawing Office 750 16

Shop / Supermarket 500 22

General Office 500 19

Laboratory 500 16

Computer Room 300 16

Lecture / Classroom 300 16

House-Kitchen 300 n/a

House - Office 300 n/a

GeneralAssembly Work 250 25

Pub Bar 150 22Restaurant 100 22

House Bedroom 50 n/a

Category TypeOverall

luminous efficacy(lm/W)

Overallluminousefficiency

Combustion candle 0.3 0.04%gas mantle 12 0.150.3%

Incandescent tungsten incandescent 515.2 0.72.2%tungsten glass halogen 1 6.7-19.8 2.4-2.9%tungsten quartz halogen (low voltage) 24 3.5%

Light-emitting diode white LED (raw, no power supply) 4.5208 * 0.6622.0%White LED current realworld 58.593.1 8 .613.6%

Fluorescent compact fluorescent 4672 811%Linear fluorescent 60 -100 9%-15%

Gas discharge metal halide lamp 65115 9.517%high pressure sodium lamp 85150 1222%low pressure sodium lamp 100200 1529%

* Laboratory Prototype

Quantity Symbol SI unit Abbr. Notes

Luminous energy Q v lumen second lm sunits are sometimescalled talbots

Luminous flux F lumen (= cd sr) lm also called luminouspower

Luminous intensity Iv candela (= lm/sr) cd an SI base unit

Luminance Lvcandela per squaremetre

cd/m 2 units are sometimescalled "nits"

Illuminance Ev lux (= lm/m 2) lxUsed for light incidenton a surface

Luminous emittance Mv lux (= lm/m 2) lxUsed for light emittedfrom a surface

Luminous efficacy lumen per watt lm/W ratio of luminous flux toradiant flux

10000

1000

100

10

I l l u m i n a n c e ( l u x )

2000 3000 4000 5000 6000 7000

Colour Temperature (Kelvins)

UnnaturalPleasant

Cool

Kruithof Graph