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What is LB value?

In the world of lighting, standardized measurement is essential to assess the performance and quality of different light sources. The LB standardization is an important measure applied specifically to LED lighting. In this article, we dive deeper into the LB standardization, discuss the meaning of the L value and the B value, and shed light on the practical implications of this standardization.

The LB standardization

The LB standard, also known as L-value and B-value standards, aims to assess the performance of LED lighting over time. This allows designers, installers and end users to make realistic estimates of how an LED fixture will behave as time passes. This standardization provides a clear understanding of the light output and reliability of the light source over its lifetime.

The L value

The L value, also known as light retention value, is one of the two elements of the LB standardization. This value indicates the percentage of initial light output an LED fixture retains after a certain number of hours of burning. The higher the L value, the better the quality and durability of the light source.

Suppose we have an LED fixture with an initial light output of 4000 lumens and an LB rating of L80. This means that after a set lifetime, say 40,000 hours of operation, the light source will still retain 80% of its original light output. So, in this case, the light output after 40,000 hours would be 3200 lumens (80% of 4000 lumens).

LB standardization LB value

The B value

In addition to the L value, the B value is an equally important aspect of the LB standardization. The B value refers to the percentage of LEDs within a luminaire that still function after its lifetime. In other words, it indicates how reliable the individual LED components are.

Suppose an LED fixture has a B value of B10. This means that at least 90% of the LEDs within the luminaire will still function normally after its lifetime. This value is used to evaluate the reliability of the light source over time.

In practice

The LB standardization has direct practical implications for lighting plans and lighting installation. By knowing the L value and B value, we can make better decisions about which LED fixtures are best suited for specific applications.

Suppose you are creating a lighting plan for an office space with high ceilings and long burning hours. By selecting fixtures with a high L-value, for example L90, you can be sure that light output will remain high for a longer period of time. In addition, if you choose fixtures with a low B-value, such as B5, you can rely on the long-term reliability of the individual LEDs.

Getting Started

The LB standardization plays an essential role in ensuring the quality and durability of LED lighting. By measuring and communicating the L value and B value, we can make an informed choice when selecting lighting solutions. Whether for commercial, residential or industrial applications. Understanding LB standards helps create well-lit and reliable spaces that meet expectations of quality and performance. Both now and in the future. Need advice on which fixtures are best for you? Please feel free to get in touch!

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Maurice Arons

Director