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1question #3
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All spotlights are place at 15 meters from the stage. You want to produce a circle of light of 2meters diameter with the SPOTLIGHT#1 on the Player #1, a rectangle of light of 2m by 1m with the SPOTLIGHT #2 on the Player #2 and a circle of light of 1meter diameter with the SPOTLIGHT#3 on the Player #3
1) Calculate the BEAM ANGLE of the SPOTLIGHT#1 and SPOTLIGHT#3
Spotlight 1=3.814°
Spotlight 3= 1.909°
2) You want to have an illuminance of 300 lux on Player #1 (under the SPOTLIGHT#1). What is the Luminous Flux (lumen) the lamp need to releases assuming homogeneous distribution of the light in the illuminated circle?
7714.98Watt
3) If the lamp used is a Incandescent lamp with an efficacy of 15 Lumen/Watt, what will be the power of the lamp?
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