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There's not a direct conversion, but both are based on the candela, a unit of luminous intensity. There is a nice explanation of the difference between lumens and lux at http://en.wikipedia.org/wiki/Lumen_(unit).
Lumens is the total amount of light a light source (a light bulb, for instance) throws in all directions. Lux (lumens per square meter) can measure how intense light from that light source is when looking toward it from a certain distance. Lux depends greatly on how far away you are from a light source. At any given instant, light is thrown from the source in a perfect sphere.
If you are trying to calculate how many lumens your light bulb shines and you have a light meter that gives you lux, point your meter at the light, then take your lux multiply by 12.57 (pi times 4). Then, multiply this by the distance of your light meter from the light bulb (in meters) squared. That will give you the lumens of the light bulb. In equation form, where lm is lumens, r is your distance from the light source, and pi is (come on) about 3.14, lux=lm/(pi*4*(r^2)), or lm=lux*pi*4*(r^2). The (pi*4*(r^2)) part is used to calculate the surface area of a sphere around the light source.
Note: this calculation does not account for reflected light, and will only work on an exposed light bulb. Lights housed in a reflective cone (like in a flashlight) are designed to project light in one direction and (within the spot where light is projected) will have a lux much higher at any given distance than if the light bulb wasn't housed in a cone.
AnswerA lux is a special name given to a lumen per square metre. To convert lux to lumens, you need to multiply the illuminance (light arriving) on a surface, in lux, by the area of that surface, in square metres.
What else can I help you with?
Relation between Lux Lumen?
One lux = one lumen per square metre See link for more detail.
What is the Latin word for divine light?
holy light = lucem sanctam
What does LUX stand for?
The lux is the SI unit of illuminance, and is equal to 1 lumen per square meter.
What will be lighting lux level on badminton court?
500 ansi lumen
What is the difference between lumen and lux, and how do they relate to each other in measuring the brightness of a light source?
Lumen measures the total amount of visible light emitted by a source, while lux measures the intensity of light at a specific point. Lux is calculated by dividing the total lumens by the area over which the light is spread. In simpler terms, lumen is the total light output, while lux is the brightness at a specific spot.
How do you calculate a lux level in a room?
Light Level or Illuminance, is the total luminous flux incident on a surface, per unit area. The work plane is where the most important tasks in the room or space are performed.Measuring Units Light Level - IlluminanceIllumenance is measured in foot candles (ftcd, fc, fcd) (or lux in the metric SI system). A foot candle is actually one lumen of light density per square foot, one lux is one lumen per square meter. 1 lux = 0.0929 foot candle = 1 lumen /sq meter = 0.0001 phot1 ftcd = 1 lux / 10.7521 lumen/sq ft = 1 foot candle = 1x104 lux = 1 phot
What is 'light' in Latin?
Lux is one Latin equivalent of 'light'. It refers to light, in the sense of radiant energy. Lumen is another equivalent. It refers to light, in the sense of the source of that energy.
How do you say light in roman?
there is no roman language. in latin one of the following lux lucis, levis, luminarium, lumen, aduro
How many lumens equal daylight?
The illuminance of direct sunlight is approximately 100,000 lux, but normal daylight, which is filtered through a cloudy sky, is between 5,000 and 10,000 lux, while moonlight can be as little as 0.25 lux. About 1000 Lumen is equal to direct bright daylight .
What is the motto of Colby College?
The motto of Bates College is 'Amore Ac Studio'.
What is the lux or lumen level of a 18w and 36w and 58w t8 fluorescent tube and 13w and 18w plc reccessed downlight and 18w and 9w wall light and 8w exit light?
berapa besar Lux bohlam Metalhalide dibandingkan dengan lux bohlam PL-C 26 Watt
How many lumens on sunny day?
The illuminance of direct sunlight is approximately 100,000 lux, but normal daylight, which is filtered through a cloudy sky, is between 5,000 and 10,000 lux, while moonlight can be as little as 0.25 lux. About 1000 Lumen is equal to direct bright daylight .
