Luminous flux maintenance over time (CLO)
A system that takes into account the decrease in luminous flux over time and prevents over-lighting at the beginning of the life of a lighting installation.
In fact, the decrease in luminous flux over time must be taken into account to ensure a predetermined level of illuminance over the lifetime of the luminaires.
Without remote control, this means unnecessary use of full power during the initial life of the luminaire. By precisely controlling the luminous flux, the amount of energy required can be controlled so that the desired illuminance level - no more and no less than required - is achieved throughout the lifetime of the luminaires. CLO - constant light output.
What is CLO in lighting?
The luminous flux of an LED module gradually decreases over its operating lifetime. In other words, an LED reaches its highest brightness at the beginning of its service life. Over time, however, its maximum light output declines. In addition, the efficiency of the LED is reduced. Although the input current remains unchanged, the luminous flux gradually weakens, meaning that the light source produces less light while consuming the same amount of power.
CLO, or Constant Light Output, is designed to overcome this limitation. It works by operating the luminaire at a lower current level during the initial period of use and then gradually increasing the current over time to compensate for the natural reduction in luminous flux. As a result, users can benefit not only from stable lighting performance but also from energy savings and an extended LED lifespan. These are just some of the advantages offered by CLO technology.
Benefits of CLO technology
CLO is a feature available in selected lighting luminaires. It compensates for the gradual reduction in LED luminous flux throughout the product's lifetime. This technology offers numerous benefits, making it highly valued across the lighting industry. One of its key advantages is that it helps reduce the environmental impact of lighting installations while contributing to lower operating costs.
Another major benefit of CLO is its ability to maintain consistent light levels and stable colour temperature throughout the entire service life of a luminaire. This ensures reliable lighting conditions within a space, which is particularly important in workplaces, industrial facilities, and public environments.
CLO also helps extend the intervals between maintenance activities. By managing LED module performance more effectively, luminaires age in a more predictable manner. This enables longer periods between service interventions and simplifies the planning of technical inspections and maintenance schedules for lighting installations.
These advantages are driving the growing popularity of CLO and making it an increasingly important component in the design of modern lighting systems.
CLO (Constant Lumen Output) applications
Constant Lumen Output (CLO) technology is used in advanced lighting systems where maintaining a consistent level of illumination throughout the entire lifetime of the luminaire is essential. It is widely employed in industrial, street, and warehouse lighting applications, where reliable and stable lighting conditions must be ensured over extended periods.
CLO technology is also commonly used in offices, production halls, and retail facilities. To learn more about this solution, please feel free to contact us. As an experienced lighting manufacturer, we can provide detailed information, answer your questions, address any concerns, and recommend the most suitable lighting solutions for your project.
We believe in open communication and are always happy to share our extensive expertise in CLO technology. Our team will be pleased to offer professional advice and support at every stage of our cooperation.