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Light Power Formula

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Power is a quantity permitting comparison of illuminances in the image planes of various optical systems. Check FAQs

L p = A \cdot H

L_p - Power?A - Surface Area?H - Irradiation?

Light Power Example

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With units

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Here is how the Light Power equation looks like with Values.

Here is how the Light Power equation looks like with Units.

Here is how the Light Power equation looks like.

22.23 = 28.5 \cdot 0.78

22.23W = 28.5m² \cdot 0.78W/m²

22.23 = 28.5 \cdot 0.78

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Light Power Solution

Follow our step by step solution on how to calculate Light Power?

FIRST Step Consider the formula

L p = A \cdot H

Next Step Substitute values of Variables

∴

L p = 28.5m² \cdot 0.78W/m²

Next Step Prepare to Evaluate

∴

L p = 28.5 \cdot 0.78

LAST Step Evaluate

∴

L p = 22.23W

Light Power Formula Elements

Variables

Power

Power is a quantity permitting comparison of illuminances in the image planes of various optical systems.

Symbol: L_p

Measurement: PowerUnit: W

Note: Value should be greater than 0.

Formulas to find Power

Surface Area

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.

Symbol: A

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Surface Area

Irradiation

Irradiation is the radiation flux incident on a surface from all directions.

Symbol: H

Measurement: Heat Flux DensityUnit: W/m²

Note: Value should be greater than 0.

Formulas to find Irradiation

Other formulas in Light Measurement category

Go Area affected by Light Incident

A = \frac{L p}{H}

Go Intensity on Solid Angle

I = \frac{Φ m}{Ω}

Go Flux at Solid Angle

Φ m = I \cdot Ω

Go Reflected Luminous Flux

Φ r = Φ i \cdot ρ

How to Evaluate Light Power?

Light Power evaluator uses Power = Surface Area*Irradiation to evaluate the Power, The Light Power formula is defined as a quantity permitting comparison of illuminances in the image planes of various optical systems. Power is denoted by L_p symbol.

How to evaluate Light Power using this online evaluator? To use this online evaluator for Light Power, enter Surface Area (A) & Irradiation (H) and hit the calculate button.

FAQs on Light Power

What is the formula to find Light Power?

The formula of Light Power is expressed as Power = Surface Area*Irradiation. Here is an example- 22.23 = 28.5*0.78.

How to calculate Light Power?

With Surface Area (A) & Irradiation (H) we can find Light Power using the formula - Power = Surface Area*Irradiation.

Can the Light Power be negative?

No, the Light Power, measured in Power cannot be negative.

Which unit is used to measure Light Power?

Light Power is usually measured using the Watt[W] for Power. Kilowatt[W], Milliwatt[W], Microwatt[W] are the few other units in which Light Power can be measured.

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Light Power Formula

Light Power Example

Light Power Solution

Light Power Formula Elements

Other formulas in Light Measurement category

How to Evaluate Light Power?

FAQs on Light Power

Variable Name