Übung 11 Flashcards by Paul Wergen

Q

Lichtstrom (lm) Berechnung
Φ

A

Φ=𝐼∗Ω

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Q

Lichtstärke (cd)

A

𝐼 =Φ/Ω

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Q

Beleuchtungsstärke (lx=lm/m²)

A

E = Φ/𝐴 = 𝐼Ω/ 𝐴 =𝐼/𝑟2

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Q

Leuchtdichte (cd/m²) �

A

L= 𝐼/𝐴 =Reflektionsgrad*E/pi

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Q

Raumwinkel (sr)

A

Ω =𝐴/ 𝑟²

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Q

Zeichenhöhe

A

ℎ = 2𝑑 ∗tan(𝛼/2)

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Q

Faustregel (Zeichenhöhe bei 22’ Sehwinkel)

A

ℎ = d/155

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Q

Reflexionsgrad

A

Reflektionsgrad =Φ/ Φ𝑟

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Q

A

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