Beam Angle Calculator

On Stage Lighting presents a simple Beam Angle Calculator to help you find the correct spotlight for your show.

If you need to project a gobo image to a certain size or the pool of a spotlight to be a specific width , you need to find out the beam angle . The calculation to find Beam Angle using the Throw Distance/Beam Diameter is simple trigonometry that we have compiled into the Beam Angle Calculator using Javascript.

Update:// There are now quite a few stage lighting calculators for your iPhone. Look at out Stage Lighting iPhone Apps page

Throw Distance: Units

Beam Width/Diameter: Units


One Response to Beam Angle Calculator

  1. mohd yunus September 9, 2010 at 11:26 am #

    please give an example how to calculate the beam angle

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