Luminous Flux Calculator

✖Area of illumination refers to the size or extent of the space covered by light from a source, determining the reach and coverage of light in that area.ⓘ Area of Illumination [A]			+10% -10%
✖Luminous intensity is a measure of the amount of light emitted by a light source in a specific direction. It quantifies the brightness or concentration of light in that direction.ⓘ Luminous Intensity [I_v]			+10% -10%
✖Length of illumination refers to the duration or period of time that a lighting system or light source remains turned on and provides illumination before being switched off or replaced.ⓘ Length of Illumination [L]			+10% -10%

✖Luminous flux is a measure of the total amount of light emitted by a light source in all directions. It quantifies the overall brightness or output of the source.ⓘ Luminous Flux [F]

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Formula

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Luminous Flux

Formula

`"F" = ("A"*"I"_{"v"})/("L"^2)`

Example

`"42.95238lm"=("41m²"*"4.62cd")/(("2.1m")^2)`

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Luminous Flux Solution

STEP 0: Pre-Calculation Summary

Formula Used

Luminous Flux = (Area of Illumination*Luminous Intensity)/(Length of Illumination^2)
F = (A*I_v)/(L^2)
This formula uses 4 Variables

Variables Used

Luminous Flux - (Measured in Lumen) - Luminous flux is a measure of the total amount of light emitted by a light source in all directions. It quantifies the overall brightness or output of the source.
Area of Illumination - (Measured in Square Meter) - Area of illumination refers to the size or extent of the space covered by light from a source, determining the reach and coverage of light in that area.
Luminous Intensity - (Measured in Candela) - Luminous intensity is a measure of the amount of light emitted by a light source in a specific direction. It quantifies the brightness or concentration of light in that direction.
Length of Illumination - (Measured in Meter) - Length of illumination refers to the duration or period of time that a lighting system or light source remains turned on and provides illumination before being switched off or replaced.

STEP 1: Convert Input(s) to Base Unit

Area of Illumination: 41 Square Meter --> 41 Square Meter No Conversion Required
Luminous Intensity: 4.62 Candela --> 4.62 Candela No Conversion Required
Length of Illumination: 2.1 Meter --> 2.1 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

F = (A*I_v)/(L^2) --> (41*4.62)/(2.1^2)

Evaluating ... ...

F = 42.952380952381

STEP 3: Convert Result to Output's Unit

42.952380952381 Lumen --> No Conversion Required

FINAL ANSWER

42.952380952381 ≈ 42.95238 Lumen <-- Luminous Flux

(Calculation completed in 00.004 seconds)

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Created by Prahalad Singh

Jaipur Engineering College and Research Centre (JECRC), Jaipur

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< 15 Illumination Parameters Calculators

Number of Lamps Required for Illumination

Go Number of Lamp = (Illumination Intensity*Area of Illumination)/(Luminous Flux*Utilization Factor*Maintenance Factor)

Index of Refraction

Go Refractive Index of Medium 1 = (Refractive Index of Medium 2*sin(Refracted Angle))/sin(Incident Angle)

Luminance

Go Luminance = Luminous Intensity/(Area of Illumination*cos(Illumination Angle))

Luminous Flux

Go Luminous Flux = (Area of Illumination*Luminous Intensity)/(Length of Illumination^2)

Reduction Factor

Go Reduction Factor = Mean Spherical Candle Power/Mean Horizontal Candle Power

Mean Horizontal Candle Power

Go Mean Horizontal Candle Power = Sum of Candle Power/Number of Lamp

Solid Angle

Go Solid Angle = Area of Illumination/(Radius of Illumination^2)

Maintenance Factor

Go Maintenance Factor = Final Illumination/Initial Illumination

Illumination

Go Illumination Intensity = Luminous Flux/Area of Illumination

Mean Hemi-Spherical Candle Power

Go Mean Hemi Spherical Candle Power = Luminous Flux/(2*pi)

Mean Spherical Candle Power

Go Mean Spherical Candle Power = Luminous Flux/(4*pi)

Lamp Efficiency

Go Lamp Efficiency = Luminous Flux/Input Power

Candle Power

Go Candle Power = Luminous Flux/Solid Angle

Lumens

Go Lumen = Candle Power*Solid Angle

Depreciation Factor

Go Depreciation Factor = 1/Maintenance Factor

Luminous Flux Formula

Luminous Flux = (Area of Illumination*Luminous Intensity)/(Length of Illumination^2)
F = (A*I_v)/(L^2)

Is luminous flux the same as lumens?

The lumen is the standard unit of luminous flux. Luminous flux is the measure of the perceived power of light by the human eye. We measure luminous flux in lumens.

How to Calculate Luminous Flux?

Luminous Flux calculator uses Luminous Flux = (Area of Illumination*Luminous Intensity)/(Length of Illumination^2) to calculate the Luminous Flux, The Luminous Flux is defined as the total quantity of the light energy emitted per second from a body. Luminous Flux is denoted by F symbol.

How to calculate Luminous Flux using this online calculator? To use this online calculator for Luminous Flux, enter Area of Illumination (A), Luminous Intensity (I_v) & Length of Illumination (L) and hit the calculate button. Here is how the Luminous Flux calculation can be explained with given input values -> 353.288 = (41*4.62)/(2.1^2).

FAQ

What is Luminous Flux?

The Luminous Flux is defined as the total quantity of the light energy emitted per second from a body and is represented as F = (A*I_v)/(L^2) or Luminous Flux = (Area of Illumination*Luminous Intensity)/(Length of Illumination^2). Area of illumination refers to the size or extent of the space covered by light from a source, determining the reach and coverage of light in that area, Luminous intensity is a measure of the amount of light emitted by a light source in a specific direction. It quantifies the brightness or concentration of light in that direction & Length of illumination refers to the duration or period of time that a lighting system or light source remains turned on and provides illumination before being switched off or replaced.

How to calculate Luminous Flux?

The Luminous Flux is defined as the total quantity of the light energy emitted per second from a body is calculated using Luminous Flux = (Area of Illumination*Luminous Intensity)/(Length of Illumination^2). To calculate Luminous Flux, you need Area of Illumination (A), Luminous Intensity (I_v) & Length of Illumination (L). With our tool, you need to enter the respective value for Area of Illumination, Luminous Intensity & Length of Illumination and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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