Panasonic has developed a new kind of sensor that does away with the colour filrer array (CFA) found in most digital cameras manufactured today, relying instead on ‘micro colour splitters’ that separate the light that falls on image sensors by exploiting light’s wavelike properties. “Conventional colour image sensors use a Bayer array, in which a red, green, or blue light-transmitting filter is placed above each sensor,” the company says. “These filters block 50 - 70% of the incoming light before it even reaches the sensor.” The development of ‘micro colour splitters” not only makes CFAs unnecessary but also allows sensors to achieve approximately double the colour sensitivity in comparison with conventional imagers that use colour filters.
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