Lux is a unit of illuminance used to measure the intensity of lighting on a specific surface. The word "lux" comes from the Latin word for light. This unit helps determine how well a space is illuminated, which is crucial for a wide range of applications, from offices and homes to industrial and public spaces. One lux is equal to one lumen per square meter (lm/m²), meaning it describes the amount of light that falls on a surface.
The difference between lux and lumen
Although lux and lumen are both related to the measurement of light, they differ in what they measure:
- Lumen (lm): Measures the total amount of visible light emitted by a light source, regardless of direction. It tells us how much light a lamp or other light source produces in total.
- Lux (lx): Meet de hoeveelheid licht die daadwerkelijk op een specifiek oppervlak terechtkomt. Eén lx is gelijk aan één lumen verdeeld over een oppervlakte van één vierkante meter.
Practical example
If a light source produces 1000 lumens and it is directed over an area of 10 square meters, the illuminance is 100 lux. However, if the same amount of light (1000 lumens) is concentrated on just one square meter, the illuminance would be 1000 lux. This example shows how the size of the area affects the lux value, while the lumen value remains constant.
When is lux important?
It is a crucial metric in the world of lighting because it helps determine how much light actually reaches a specific surface. This is essential for assessing the quality of lighting in various contexts, such as:
- Workplaces and Offices: Good lighting improves productivity and reduces fatigue among employees.
- Public Spaces: An adequate lux level ensures safety and comfort in areas such as parking lots, streets, and sports fields.
- Healthcare: In hospitals and clinics, good lighting is crucial for accurate diagnoses and patient care.
How much light is 1 lux?
1 lux is the illuminance produced by a light source with a luminous flux of one lumen, evenly distributed over an area of one square meter. This level of light is roughly equivalent to the light produced by a full moon on a clear night.
How many lux is daylight?
The lux value of daylight varies greatly depending on the conditions. On a clear, sunny day, direct sunlight can reach values of 100,000 to 130,000 lux. Under cloudy conditions, this value drops to around 1,000 lux. Daylight is therefore significantly brighter than typical indoor lighting, which often ranges from 300 to 500 lux for offices.
What is the light level in lux?
The light level refers to the amount of light that falls on a specific surface. This can range from very low values, such as 0.1 lux under a full moon, to extremely high values like 100,000 lux in direct sunlight. Different applications and environments require different lux levels to ensure proper visibility and safety.
What does lux mean in sensor lighting?
In sensor lighting, such as motion sensors or daylight sensors, lux is used to evaluate the environment and adjust the lighting based on light levels. For example, if it gets darker (lower lux values), a sensor can automatically turn on the lights to provide sufficient visibility.
How is lux measured?
Lux is measured with a device called a lux meter. This device measures the amount of light that falls on a surface. Lux meters are important when designing lighting plans for buildings, stadiums, public spaces, and more, as they help ensure adequate lighting according to the standards and needs of the users.
Understanding lux and how it differs from other light metrics such as lumens is crucial for creating effective lighting environments. By using the correct lux values, you can create a comfortable, safe, and productive environment for various applications. Whether it's for workplaces, public spaces, or home use, measuring and applying the right lux values is essential.
Guidelines and tips for vehicle lighting
When choosing LED vehicle lighting, there are several key factors to consider:
- General guidelines: The mentioned lux values (100-200 lx for general work areas, 300-500 lx for specific work zones, 500-800 lx for driving on unlit roads, and 800-1000 lx for heavy work environments) correspond to common recommendations for workplace lighting in various environments. They are intended to provide a balance between sufficient visibility and energy efficiency.
- Depending on the situation: The appropriate lux value can vary depending on specific situations and work environments. Factors such as weather conditions, the nature of the work, and specific safety requirements play a significant role in determining the proper lighting.
- Light Color and Temperature: Consider the desired light color and temperature, as different conditions call for different types of lighting. Choose warmer colors, for example, for better visibility in foggy weather.
- Durability: Choose products that are long-lasting and resistant to the vibrations and shocks that often occur with vehicles. Tip: for work lights on vehicles operating in harsh conditions. Opt for lamps with at least an IP68 rating. IP68 offers protection against dust and prolonged immersion in water under specified conditions.
- Regulation: Ensure that the LED lighting complies with the applicable regulations and standards for vehicle lighting, such as ECE R10.
By taking these factors into account, you can choose the most suitable LED lighting that meets the requirements for safety, efficiency, and reliability for your vehicle.
For advice on the right lamp for your situation, you can always contact our technical team.