Cata lumina obtin de la un bec incandescent, tub fluorescent, bec economic ?.... Tabelul de mai jos prezinta puterea luminoasa emisa, exprimata in lumeni, de fiecare din categoriile enuntate mai sus: 

TIP PutereIntensitate luminoasa

Echivalent bulb incandescent

Dimensiune

Bec incandescent - 220V AC

25 W 220 lm - -

Bec incandescent - 220V AC

40 W 420 lm - -

Bec incandescent - 220V AC

60 W 710 lm - -

Bec incandescent - 220V AC

100 W 1360 lm - -

Bec economic - 220V AC

8 W 400 lm aprox. 40 W -

Bec economic - 220V AC

12 W 600 lm aprox. 60 W -

Bec economic - 220V AC

15 W 900 lm aprox. 75 W -

Bec economic - 220V AC

21 W 1200 lm aprox. 100 W -

Tub fluorescent - 220V AC

58 W 4500 lm aprox. 100W + 100W + 100 W 150 cm

Tub fluorescent - 220V AC

36 W 2800 lm aprox. 100 W + 100 W 120 cm

Tub fluorescent - 220V AC

30 W 2100 lm aprox. 60 W + 100 W 90 cm

Tub fluorescent - 220V AC

18 W 1150 lm aprox. 60  W + 40 W 60 cm