Total Luminous Flux Calculator

Luminous flux or lumen is often used as an objective measure of the useful light emitted by a light source and is typically reported on the packaging for light bulbs. The SI unit of luminous flux is the lumen (lm). Given here is an online total luminous flux calculator to measure the lumen that the light source is capable of emitting. Luminous intensity to luminous flux converter converts and gives you the lumen that the light source is capable of emitting

Luminous Intensity to Luminous Flux Converter

cd
degree
ster
lm

Luminous flux or lumen is often used as an objective measure of the useful light emitted by a light source and is typically reported on the packaging for light bulbs. The SI unit of luminous flux is the lumen (lm). Given here is an online total luminous flux calculator to measure the lumen that the light source is capable of emitting. Luminous intensity to luminous flux converter converts and gives you the lumen that the light source is capable of emitting

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Formula:

Ω = 2π(1-Cosθ) F = ΩIv Where, Iv = Maximum Luminous Intensity θ = Cone Full Angle Ω = Equivalent Solid Angle F = Total Luminous Flux

Example:

Calculate the total luminous flux based on the maximum luminous intensity of 50 cd and cone full angle of 45°.

Solution:

Ω = 2π(1 - Cos45)
= 0.4783 ster
F = 0.4783 x 50
= 23.914 Im.

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