Yes, there is such a thing as lumens/m^3. Lumens per cubic meter (lm/m^3) is a unit of measurement for luminance, which is the amount of visible light per unit area emitted or reflected from a surface. It is commonly used in lighting design and calculations.
Lumens/m^3 is usually measured using a device called a luminance meter, which measures the amount of light that passes through a specific area in a given direction. It can also be calculated by multiplying the luminance (in cd/m^2) by the solid angle (in sr).
Lumens/m^3 measures luminance, while lumens measures luminous flux, which is the total amount of visible light emitted from a source. Luminance takes into account the area and direction of the light source, while luminous flux does not.
Lumens/m^3 is important because it helps determine the amount of light that is perceived by the human eye and how bright a surface appears. It is also used in lighting design to ensure that the desired level of lighting is achieved in a space.
Yes, lumens/m^3 can be converted to other units of measurement such as lux, which measures illuminance, or foot-candles, which is also a unit of illuminance commonly used in the United States. The conversion factor will depend on the specific units being converted.