Summary
Samenvatting visueel comfort formules
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Volledig overzicht formules visueel comfort
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By: sapralyevam • 1 year ago
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Formules comfortVisueel
- Lichtsnelheid
• c=fxʎ
➢ f = frequentie
het aantal cycli per seconde
f = 1/T
[S -1 ]
Neemt toe met de stralingsenergie
➢ ʎ = golflengte
afstand tussen 2 pieken in 1 cyclus
[nm]
Grotere golflengte = lageren frequentie = lager stralingsenergie
- S=r+g+b
- Specifieke lichtstroom
• η=φ/P
• met P=toegevoerd vermogen in W
- Lichtsterkte
• I= ф /ω
- Lichtstroom
• ϕ = 𝐼𝐼 . 4π
- Luminantie
• L=I/A
- verlichtingssterkte
• E=ф/A
• Voor schuine lichtinval
• E = (I/r²) . cos α
• Bij loodrechte lichtinval is α = 0°
➢ cos α = 1: En = (I/r²) . cos 0°
• Voor ‘oneindig’ lineaire bron
➢ E = (I/d ) . cos α
d = afstand tot de lichtbron
- Aantal lampen ramen
•
- Diffuus reflecterend vermogen van een oppervlak
•
- Voor een perfect diffuus reflecterend oppervlak
• L=(E . ρ )/π
➢ Ρ = reflectiefactor
• [cd/m²]
- Voor een niet-diffuus reflecterend oppervlak, specifieke richting en geometrie
• L=(E . β)/π
➢ Β = luminantiefactor (‘verlichtingsfactor)
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