R
Richard
- Jan 1, 1970
- 0
Luminous flux is pretty much like the total amount of light put out by a
light source.
When you buy a lamp it often will state light output in Lumens.
If you took a light meter and measured the luminous emittance of a surface
it would give a reading in lux. Luminous emittance is Luminous flux / m2.
That bothers me a bit, because in the first case Luminous flux is said to be
the total quantity of light emitted by a light source. Whereas in measuring
Luminous emittance, luminous flux does not neccessarly carry the concept
of total light emitted by a light source at all.
So luminous flux does not seem to have one single meaning - does it?
light source.
When you buy a lamp it often will state light output in Lumens.
If you took a light meter and measured the luminous emittance of a surface
it would give a reading in lux. Luminous emittance is Luminous flux / m2.
That bothers me a bit, because in the first case Luminous flux is said to be
the total quantity of light emitted by a light source. Whereas in measuring
Luminous emittance, luminous flux does not neccessarly carry the concept
of total light emitted by a light source at all.
So luminous flux does not seem to have one single meaning - does it?