How to understand Lumens and Lux parameters in Lightfox products

What are Lumen and Lux?

Lux and lumens are both units of measurement related to lighting, but they measure different things. Let’s break them down:

  1. Lumens (lm):

    • Lumens measure the total amount of visible light emitted by a source. It’s a measure of luminous flux.
    • When you buy a light bulb, the lumens rating tells you how bright the bulb is. For example, a 100-watt incandescent bulb emits about 1600 lumens, while a 10-watt LED might produce the same amount of lumens but with significantly less power consumption.
  2. Lux (lx):

    • Lux measures the intensity of light on a surface. It is defined as one lumen per square meter.
    • In other words, if you have a light source emitting one lumen, and that light is uniformly spread over a one-square-meter area, the illuminance (or light intensity) on that surface is one lux.
    • If the same light is spread over 10 square meters, the illuminance would be 0.1 lux because the light is distributed over a larger area.

Now, let’s address the “1Lux @ 337m 8,320 Lumens” specification:

This typically means that a light source emitting 8,320 lumens can produce an illuminance of 1 lux at a distance of 337 meters. This is a way to describe the intensity and reach of the light. In practical terms, if you were 337 meters away from this light source, you’d experience a light intensity of 1 lux on the surface you’re observing.

Some examples to help you understand Lux and Lumens:

Let’s compare the two specifications:

  1. 1 Lux @ 337m with 8,320 Lumens:

    • This light source emits a total of 8,320 lumens.
    • At a distance of 337 meters from the light source, the illuminance on a surface would be 1 lux.
  2. 1 Lux @ 606m with 8,856 Lumens:

    • This light source emits a total of 8,856 lumens.
    • At a distance of 606 meters from the light source, the illuminance on a surface would be 1 lux.

Comparison:

  • Luminous Flux: The second light source (8,856 lumens) emits slightly more total light than the first one (8,320 lumens). However, the difference in lumens is not substantial given the large distances we’re considering.

  • Distance and Illuminance: Despite the second light source having only a slightly higher lumen count, it can produce 1 lux of illuminance at a much greater distance (606m) compared to the first light (337m). This suggests that the second light source might have a more focused or directed beam, allowing it to maintain a higher intensity over a longer distance. In practical terms, the second light would be able to “reach” further than the first one, even though their total light outputs are relatively close.

In summary, while both lights have similar lumen values, the second light’s ability to produce 1 lux at a greater distance indicates it might have a more focused or efficient beam pattern. This could be due to differences in reflector design, lens quality, or other factors that affect how the light is distributed.

So, in practical terms:

  • The second light (1 Lux @ 606m with 8,856 Lumens) would likely have a more “spot” or concentrated beam, making it effective for illuminating specific distant objects.
  • The first light (1 Lux @ 337m with 8,320 Lumens) might have a “flood” or wider beam pattern, making it effective for illuminating a broader area closer to the light source.
Compare Products

Rigel Series 12inch Osram LED Light Bar 1Lux @ 337m 8,320 Lumens

$89.99 inc. GST

Vega Series Pair 8inch Osram LED Light Bar 1Lux @ 606m 8,856 Lumens

$79.99 inc. GST
Title
Rigel Series 12inch Osram LED Light Bar 1Lux @ 337m 8,320 Lumens Vega Series Pair 8inch Osram LED Light Bar 1Lux @ 606m 8,856 Lumens
Price
$89.99 inc. GST $79.99 inc. GST
Add to cart
Add to cart Add to cart
SKU
LF-LB-12DR LF-LB-8SR*2
Availability
In stock In stock
Weight
1.36 kg 1.6 kg
Dimension
37 × 10 × 9.5 cm 30 × 14 × 8 cm

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