With this patent, an energy efficient operation of LEDs is made possible by a circuit arrangement, in which two different LED chains can be coupled to a supply source at respectively different points in time.
The Patent is about a light bulb having different LED strings for direct and indirect light, so the overall light of that bulb can be shaped in a more convenient manner. The indirect light can also have a different light colour than the direct light to compensate the changes in reflection of different surfaces. This is a good patent for all areas of architectural and art lighting solutions where the light designer wants to have maximum impact on the light emitted.
Even if claim 1 is lengthy the scope is rather broad. If you want to illuminate different objects with different LED chains having different mean currents and the chains connected to a single power source at different times, then this is your patent.
The independent claim is very long. But could read on LED chains in retrofits or other applications when they use two different LED chains. Does anyone know more?