Jul 29, 2013 #1 T tddh007 Newly Enlightened Joined Jul 29, 2013 Messages 5 so if a led has a Viewing Angle (2θ1/2) =120 degree and the conversion is Luminous Intensity (mcd) = 1000 x Lumen/2 x pi(1-cos θ/2) would i have it = 1000 x lumen/ 120 or = 1000 x lumen / 2 x pi (1- cos 120/2) thanks.
so if a led has a Viewing Angle (2θ1/2) =120 degree and the conversion is Luminous Intensity (mcd) = 1000 x Lumen/2 x pi(1-cos θ/2) would i have it = 1000 x lumen/ 120 or = 1000 x lumen / 2 x pi (1- cos 120/2) thanks.
Jul 31, 2013 #2 T tddh007 Newly Enlightened Joined Jul 29, 2013 Messages 5 is this conversion correct? http://www.rapidtables.com/calc/light/lumen-to-mcd-calculator.htm
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