Lumens and LED lighting – how to choose the right work light

What do lumens really say about LED work lighting?
When choosing LED work lights, the first thing people often look at is the number of lumens. It is commonly thought that the higher the lumen count, the better the light. In practice, however, this is not always the case.

The number of lumens does not tell the whole story regarding visibility during work. For high-quality LED work lighting, lux and the beam pattern are also of great importance. In this blog, we explain what lumens and lux mean, the difference between them, and what you should look out for when choosing the right LED work light.

What is lumen?
Lumen indicates the total amount of light a lamp produces. It is the unit of measurement for the light output of an LED work light. Therefore, a 3,000-lumen lamp produces more light than a 1,500-lumen lamp.

However, the lumen count says nothing about how that light is distributed. In practice, two LED work lights with the same lumen rating can produce very different lighting results.

A practical example
An earth-moving machine equipped with a compact 4,000-lumen LED work light may offer less visibility than a well-designed 3,000-lumen work light with a superior beam pattern. The difference lies not in the quantity of light, but in the way the light reaches the work surface. This is a common occurrence with work lighting for agriculture, transport, and off-road vehicles.

What is lux and why is it at least as important?
Lux indicates how much light actually falls onto a surface. The higher the value, the better the surface is illuminated.

1 lumen is 1 lumen per m2

This makes lux a better indicator of the usability of LED work lighting than the lumen count alone. A lamp with high lumens but poor beam focusing can still provide low lux levels exactly where you need it.

A Practical Example
In roadside assistance (recovery), it is vital that the work area directly in front of or behind the vehicle is well-illuminated. An LED work light with a high lux level at a short distance is more effective here than a lamp that spreads its light too widely.

The Importance of the Beam Pattern
The beam pattern determines how the light is distributed. This is crucial for comfort, safety, and working efficiently with LED lighting.

Common Beam Patterns:

• Spot Beam (Verstraler)
  Suitable for long-distance visibility, for example, during off-road driving.
• Flood Beam (Breedstraler)
  Suitable for close-range work, such as loading, unloading, and maintenance.
• Combo Beam
  Combines both wide and long-range light; often used on agricultural and earth-moving machinery.

A good beam pattern prevents:

• Harsh shadows
• Glare from reflections
• Eye fatigue during prolonged use

Why more lumens are not always better
In practice, we often see requests for LED work lights with the highest lumen count, even though this is not always the best choice. Potential disadvantages of too many lumens include:

• Reflection on wet ground or metal parts
• Blinding yourself or your colleagues
• Unnecessarily high energy consumption

A well-tuned LED work light with a sophisticated beam pattern often delivers better performance than an extremely powerful lamp without focus.

What does this mean for your choice of LED work lights?
When choosing the right LED work lighting, it is wise to look beyond just the lumen count. Ask yourself the following questions:

• At what distance do I need clear visibility?
• Do I primarily need a wide spread or a focused beam?
• In which conditions will I use the lighting (dust, rain, mud)?

M-LED's LED lights are developed with these practical factors in mind. It’s not just the number of lumens that counts, but specifically the combination of light output, beam pattern, and durability. This makes them suitable for intensive use in transport, agriculture, earthmoving, and recovery services.