Converting Lux to Watts: A Quick Guide

Thread starter phy_optics
Start date Aug 5, 2010
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Lux Unit Watt

In summary, the conversion factor between lux and watt depends on the size of the light source and the distance from the source, but generally 1 lux is equal to 1 watt per square meter. To convert lux to watt, a formula can be used: watts = lux * area (in square meters). Lux and watt are related because watt is used to measure the amount of light produced by a light source, which can then be measured in lux at a certain distance. Both lux and watt can be converted to other units of measurement, such as foot-candles or lumens per square meter for lux and horsepower or kilowatts for watt. The appropriate unit of measurement to use depends on the specific application and what information is being measured.

Aug 5, 2010

phy_optics

Hello frnds!

Can anybody convert the following factors?

V/(lx-s) to V/(um/cm2) at 555nm ??

Thank you.

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Aug 5, 2010

dlgoff

Science Advisor

Gold Member

This site may be useful.
http://www.optics.arizona.edu/Palmer/rpfaq/rpfaq.htm"

Last edited by a moderator: May 4, 2017

Aug 5, 2010

phy_optics

Dear dlgoff! Thank you very much. It really useful to me.

Related to Converting Lux to Watts: A Quick Guide

1. What is the conversion factor between lux and watt?

The conversion factor between lux and watt depends on the size of the light source and the distance from the source. However, in general, 1 lux is equal to 1 watt per square meter.

2. How can I convert lux to watt?

To convert lux to watt, you can use the formula: watts = lux * area (in square meters). For example, if you have a 100 lux light source and a 10 square meter area, the conversion would be 100 lux * 10 square meters = 1000 watts.

3. What is the relationship between lux and watt?

Lux and watt are two different units of measurement for light. Lux is a unit of illuminance, which measures the amount of light that falls on a surface. Watt is a unit of power, which measures the rate at which energy is transferred or used. Lux and watt are related because watt is used to measure the amount of light produced by a light source, which can then be measured in lux at a certain distance.

4. Can lux and watt be converted to other units of measurement?

Yes, lux and watt can be converted to other units of measurement depending on the context. Lux can be converted to other units of illuminance, such as foot-candles or lumens per square meter. Watt can be converted to other units of power, such as horsepower or kilowatts.

5. How do I know when to use lux or watt as a unit of measurement?

Lux is typically used to measure the amount of light that falls on a surface, such as in photography or lighting design. Watt is typically used to measure the power or energy consumption of a light source, such as in electrical engineering or energy efficiency calculations. The appropriate unit of measurement to use depends on the specific application and what information is being measured.