If I have a specified number of light sources with known luminous flux and opening angle pointing in the same direction and with known distance from eachother, how can I calculate the total luminous flux?
In my specific problem I have a 100 LEDs with 22 candela and a 20° opening angle which I calculated to give me 3300 lumen per lamp. However now I am unsure how much light the combined hundred lamps (aranged in a grid with 1cm distance) will give as I strongly assume it wont be just 330.000.