Luminous Intensity in Direction Normal to Surface Calculator

✖Surface Area refers to the total area of a surface that light rays strike. This area determines the amount of light energy absorbed, reflected, or transmitted by the surface.ⓘ Surface Area [A]			+10% -10%
✖Luminance Normal to Surface is defined as a measure of wavelength-weighted power emitted by the light source in a particular direction per unit solid angle.ⓘ Luminance Normal to Surface [L_n]			+10% -10%

✖Luminous Intensity Normal to Surface measures the brightness of light emitted or reflected from a surface in a specific direction, typically perpendicular to the surface.ⓘ Luminous Intensity in Direction Normal to Surface [I_n]

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Formula

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Luminous Intensity in Direction Normal to Surface

Formula

I n = A \cdot L n

Example

10.545 cd = 28.5 m² \cdot 0.37 lx

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Luminous Intensity in Direction Normal to Surface Solution

STEP 0: Pre-Calculation Summary

Formula Used

Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface
I_n = A*L_n
This formula uses 3 Variables

Variables Used

Luminous Intensity Normal to Surface - (Measured in Candela) - Luminous Intensity Normal to Surface measures the brightness of light emitted or reflected from a surface in a specific direction, typically perpendicular to the surface.
Surface Area - (Measured in Square Meter) - Surface Area refers to the total area of a surface that light rays strike. This area determines the amount of light energy absorbed, reflected, or transmitted by the surface.
Luminance Normal to Surface - (Measured in Lux) - Luminance Normal to Surface is defined as a measure of wavelength-weighted power emitted by the light source in a particular direction per unit solid angle.

STEP 1: Convert Input(s) to Base Unit

Surface Area: 28.5 Square Meter --> 28.5 Square Meter No Conversion Required
Luminance Normal to Surface: 0.37 Lux --> 0.37 Lux No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_n = A*L_n --> 28.5*0.37

Evaluating ... ...

I_n = 10.545

STEP 3: Convert Result to Output's Unit

10.545 Candela --> No Conversion Required

FINAL ANSWER

10.545 Candela <-- Luminous Intensity Normal to Surface

(Calculation completed in 00.004 seconds)

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Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

Shobhit Dimri has created this Calculator and 900+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< Light Measurement Calculators

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Go Reflected Luminous Flux = Incident Luminous Flux*Reflection Factor

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Go Luminous Intensity = Magnetic Flux/Area Projected at Solid Angle

Flux at Solid Angle

Go Magnetic Flux = Luminous Intensity*Area Projected at Solid Angle

Area affected by Light Incident

Go Surface Area = Power/Irradiation

Luminous Intensity in Direction Normal to Surface Formula

Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface
I_n = A*L_n

What is luminous intensity of LED?

The quantity of partial LED flux was introduced in CIE publication 127-2007. Luminous intensity involves a flux and a solid angle and is the ratio of the two; hence its unit is the candela which is the lumens per steradian.

How to Calculate Luminous Intensity in Direction Normal to Surface?

Luminous Intensity in Direction Normal to Surface calculator uses Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface to calculate the Luminous Intensity Normal to Surface, The Luminous Intensity in direction normal to surface formula is defined as is measure of wavelength-weighted power emitted by light source in particular direction per unit solid angle, based on luminosity function, standardized model of sensitivity of human eye. Luminous Intensity Normal to Surface is denoted by I_n symbol.

How to calculate Luminous Intensity in Direction Normal to Surface using this online calculator? To use this online calculator for Luminous Intensity in Direction Normal to Surface, enter Surface Area (A) & Luminance Normal to Surface (L_n) and hit the calculate button. Here is how the Luminous Intensity in Direction Normal to Surface calculation can be explained with given input values -> 10.545 = 28.5*0.37.

FAQ

What is Luminous Intensity in Direction Normal to Surface?

The Luminous Intensity in direction normal to surface formula is defined as is measure of wavelength-weighted power emitted by light source in particular direction per unit solid angle, based on luminosity function, standardized model of sensitivity of human eye and is represented as I_n = A*L_n or Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface. Surface Area refers to the total area of a surface that light rays strike. This area determines the amount of light energy absorbed, reflected, or transmitted by the surface & Luminance Normal to Surface is defined as a measure of wavelength-weighted power emitted by the light source in a particular direction per unit solid angle.

How to calculate Luminous Intensity in Direction Normal to Surface?

The Luminous Intensity in direction normal to surface formula is defined as is measure of wavelength-weighted power emitted by light source in particular direction per unit solid angle, based on luminosity function, standardized model of sensitivity of human eye is calculated using Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface. To calculate Luminous Intensity in Direction Normal to Surface, you need Surface Area (A) & Luminance Normal to Surface (L_n). With our tool, you need to enter the respective value for Surface Area & Luminance Normal to Surface 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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