A couple of months ago Panasonic unveiled its plan to improve digital cameras by replacing the ubiquitous Bayer filter. The company claims a Bayer filter blocks 50%-70% of the light entering the camera, while its new color splitter design uses all the available light. A new video goes into more detail on the tech.
source : Video details Panasonic's color splitter tech that promises big improvements to digital camera sensors - GSMArena Blog