How Many Lux Should A Projector Have?ĭifferent kinds of content require different amounts of brightness to look its best.

With the ANSI lumen reading handy, you’ll be able to understand the power of a particular projector more reliably. But most modern projectors come with ANSI lumen values mentioned since the unit is much more quantifiable. Some manufacturers list ANSI lumens, and it is essential for you to note that it is different from regular lumens.ĪNSI lumens are much more accurate than regular lumens because the methods used to calculate ANSI lumens involve more variables.Įven five years ago, some projectors would come with inaccurate lumen values mentioned. One of the things that many people get confused by is ANSI lumens. You now understand that the lumen measure of a projector is crucial to look at since it plays a huge role in the quality of the image produced by the projector. The most misunderstood of which is the lumen quality. ANSI Lumensīefore you go ahead and buy any projector, there’ll be several features and specifications you’ll need to compare and evaluate. Therefore, one measure is not inherently better than the other. The further away the projector is from the screen, the larger the picture and the lesser the lux will be. The number of lumens of a projector remains constant, whereas the lux changes with distance. Now that you understand what the terms mean, you will also realize that they represent different qualities of a projector. Lux is a measure of the brightness of a light emitted by a source after considering its spread over an area. Lumen is a measure of the amount of light that a light source emits and takes the sensitivity of the human eye into account. Both measure the illuminance (or, in layman’s terms, the brightness) of light, but in different contexts. It’s not hard to see how the two units of measurement are similar. The spread of light, or more accurately, the area’s effect on luminous flux, is considered. Lux takes into account how much an incident light illuminates a surface, giving a measure of how the eyes perceive the intensity of light. In projectors, you’ll find lux represented as lumen per square meter. The unit lux is very different from lumens – it is a measure of the brightness in terms of surface area. One lumen is the luminous flux that a one-candela source of light generates over a one-steradian angle. On the other hand, radiant flux measures the EM waves from all sources.Ī more in-depth, more scientific explanation of lumens is that it is the measure of the number of packets of light (or “quanta”) a source of light produces. Luminous flux is only used to measure the electromagnetic waves that are visible to human eyes. Luminous flux is the total amount of light that a source produces in unit time.Ĭonfusing luminous flux with radiant flux is easy if you’ve read about them before. To understand lumens, you must understand luminous flux. Lux and lumens are SI units that are used by projector manufacturers to measure their product’s brightness.

Difference lux lumen