are lux and lumen the same?
240153
The difference between the units lumen and lux is that the lux takes into account the area over which the luminous flux is spread. A flux of 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux.
1273697
Not all LEDs are the same Unlike Compact Fluorescent Lamps (CFLs), LEDs are currently not regulated for energy efficiency – or characteristics such as colour. This means you may experience greater variation in their performance.
666381
[DIMMABLE AMBER GLOW]: Offers 300 lumens of amber yellowish, comfortable and relaxing glow, Smooth dimming capabilities from 100-20% (compatible with listed dimmers). [E26 BASE TUBULAR BULB]: Universal, 120VAC. E26 medium base LED light bulbs (§1.5"*3.9"), suit for E26 standard base light fixtures directly.
670635
One lux is equal to one lumen per square metre: 1 lx = 1 lm/m2 = 1 cd·sr/m2. A flux of 1000 lumens, spread uniformly over an area of 1 square metre, lights up that square metre with an illuminance of 1000 lux.
781042
Een 60 watt 'ouderwetse' gloeilamp (mat wit, zonder reflector) geeft ongeveer 750 lumen, maar de lichtsterkte neemt snel af: is die op 0,5 meter nog 185 lux, op 1,5 meter is dat nog maar 27 lux!
421671
One lumen is about the same brightness as a one birthday candle from a distance of one foot from you. To put it another way, a standard 60 watt light globe produces around 750-850 lumens of light. 1,000 lumens flashlight is able to produce a beam range of 150 to 200 meters.
953621
Lumens = Light Output. In simple terms, Lumens (denoted by lm) are a measure of the total amount of visible light (to the human eye) from a lamp or light source. The higher the lumen rating the “brighter” the lamp will appear.
851081
Flashlights, for example, are usually measured in lumens. Candlepower and lumens measure different light qualities, and 1 candlepower equals 12.57 lumens. When measuring lumens, you can also think of it as the light illuminated in a 1-square-foot area one foot away from a single candle.
1115447
A simplistic explanation is that lumens equate to a flashlight's brightness, and while that's not entirely true, it's a good rule of thumb: the bigger the number of lumens, the brighter the flashlight will appear to be. (For more info, see our piece on Measuring light output: Lumens vs Out The Front lumens.)
1174474
The Lume Cube AIR is a follow up to the original Lume Cube and features, slimmed-down size and extra accessories to provide an all-in-one lighting solution for content-creation. The Lume Cube AIR takes its design cues from the original Lume Cube, but as the name suggests its smaller and lighter.
705888
Delivered. As the name suggests, total lumens measure the total light emitted from a source in all directions. This can include light emitted into the ceiling or within the fixture. Delivered lumens takes into account additional factors, such as reflection or refraction, to only measure the light in the space.
916906
The lux (symbol: lx) is the SI derived unit of illuminance, measuring luminous flux per unit area. It is equal to one lumen per square metre. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface.
1031876
If you want something dimmer, go for less lumens; if you prefer brighter light, look for more lumens. Replace a 75W bulb with an energy-saving bulb that gives you about 1100 lumens. Replace a 60W bulb with an energy-saving bulb that gives you about 800 lumens.
1128266
What is the difference between brightness and luminosity? Brightness is how we see a star; luminosity is how much light it emits.
674947
100 lumens is considered bright enough for most walkways — including commercial properties. 100 lumens is equivalent to about 20 watts.
940383
Als Antwort auf Leonardo David: Mean Lumens is the lumen output that Lighting Designers use when planning foot candles in a space. The difference in Initial Lumens, Mean Lumens and lumen output at the end of life of the light source is a measurement of Lumen Maintenance/ Depreciation.
1306085
Delivered light aka delivered lumens describes how much useful light a light fixture can deliver to a given area, discounting any wasted light. ... With LED lighting fixtures being fundamentally directional, LED fixtures typically waste much less light compared to traditional counterparts.