Enter the luminous flux (lumens) and the power (watts) into the Calculator. The calculator will evaluate the Light Efficiency.
Light Efficiency Formula
LE = LF / P
Variables:
- LE is the Light Efficiency (lumens/watt)
- LF is the luminous flux (lumens)
- P is the power (watts)
To calculate Light Efficiency, divide the luminous flux by the power.
How to Calculate Light Efficiency?
The following steps outline how to calculate the Light Efficiency.
- First, determine the luminous flux (lumens).
- Next, determine the power (watts).
- Next, gather the formula from above = LE = LF / P.
- Finally, calculate the Light Efficiency.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
luminous flux (lumens) = 34
power (watts) = 10
FAQ
What is luminous flux?
Luminous flux is a measure of the perceived power of light. It is quantified in lumens and represents the total amount of light emitted by a source or received by a surface.
Why is light efficiency important?
Light efficiency measures how effectively a light source converts electrical power (watts) into visible light (lumens). It’s important for evaluating the energy efficiency of lighting systems, helping to reduce energy consumption and costs.
Can light efficiency vary between different types of light bulbs?
Yes, light efficiency can significantly vary between different types of light bulbs. For example, LED bulbs are generally more efficient than incandescent bulbs, producing more lumens per watt.
How can I improve the light efficiency of my home or office?
To improve light efficiency, consider using energy-efficient light bulbs such as LEDs, optimizing natural light usage, and ensuring that lighting is appropriately sized and placed for the intended area.
