If you want to choose the most suitable light set for your bicycle use, it’s important to have correct and comparative product data. Because there is no international standard for light sets, BBB measures various values. With these values you can always compare our products. To fully understand the values mentioned in the table below, we explain the concepts used in the table.
First of all, Lumen. This is the value for the total luminous flux, is the total amount of light (in all directions) emitted by that lamp.
Candela is the unit of luminous intensity. Candela indicates the amount of light emitted in a certain direction of the beam. The in the table noted Candela value is measured at the center of the beam.
Lux is the amount of light (lumens) on a certain area. Therefore Lux is the most telling unity. For example, if you have a light source of 1000 lumens, spread over 1 m², this square meter is illuminated with 1000 lux. When the same 1000 lumens are spread over 10 m², the same source illuminates a square meter with only 100 lux.
However, when comparing Lux values for different light sets, it’s important to know the distance from the light source. The larger the distance to the source, the lower the Lux value will be. BBB measures the Lux value at 1 and 10 meters. The Lux value at 1 meter is equal to the value for Luminous intensity (Candela).
The light spot diameter indicates how wide the beam of the lamp is at 1 meter distance.
The burn time of the different lamps gives an indication of how many hours the lamp will burn. For battery lamps the burn time obviously depends on the quality of the battery. Burn time for BBB lights with battery pack is measured with fully charged batteries.