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
In = A*Ln
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 is the area of the surface on which light is incident.
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: 10 Square Meter --> 10 Square Meter No Conversion Required
Luminance Normal to Surface: 0.12 Lux --> 0.12 Lux No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
In = A*Ln --> 10*0.12
Evaluating ... ...
In = 1.2
STEP 3: Convert Result to Output's Unit
1.2 Candela --> No Conversion Required
FINAL ANSWER
1.2 Candela <-- Luminous Intensity Normal to Surface
(Calculation completed in 00.004 seconds)

Credits

Created by Shobhit Dimri
Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat
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Verified by Urvi Rathod
Vishwakarma Government Engineering College (VGEC), Ahmedabad
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14 Light Measurement Calculators

Luminous Intensity in Direction at Angle
Go Luminous Intensity at Angle = Luminance Normal to Surface*Surface Area*cos(Angle to Normal)
Transmission Factor
Go Transmission Factor = Luminous Flux Transmitted by Object/Luminous Flux Incident upon Object
Luminous Intensity in Direction Normal to Surface
Go Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface
Reflected Luminous Flux
Go Reflected Luminous Flux = Incident Luminous Flux*Reflection Factor
Incident Luminous Flux
Go Incident Luminous Flux = Reflected Luminous Flux/Reflection Factor
Area Projected at solid angle
Go Area Projected at Solid Angle = Magnetic Flux/Luminous Intensity
Intensity on Solid Angle
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 of Bulb
Go Area of Bulb = Area of Capillary Tube*Length of Capillary Tube
Light flux
Go Flux Light = Photoelectric Current/Photoelectric Sensitivity
Illuminance
Go Illumination = Magnetic Flux/Surface Area
Area affected by Light Incident
Go Surface Area = Power Light/Irradiation
Irradiation
Go Irradiation = Power Light/Surface Area
Light Power
Go Power Light = Surface Area*Irradiation

Luminous Intensity in Direction Normal to Surface Formula

Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface
In = A*Ln

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 In 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 (Ln) and hit the calculate button. Here is how the Luminous Intensity in Direction Normal to Surface calculation can be explained with given input values -> 1.2 = 10*0.12.

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 In = A*Ln or Luminous Intensity Normal to Surface = Surface Area*Luminance Normal to Surface. Surface Area is the area of the surface on which light is incident & 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 (Ln). 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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