Sony filed a patent for a honeycomb type image sensor. The sensor's photodiodes are shaped like hexagons (regular sensors have square photodiodes) which should improve the sensor's performance. Few years ago Fuji worked on a honeycomb type "Super CCD" sensor.
The Google translation is sufficient to get a basic idea about this patent:
- Patent Publication No. 2010-161200
- published 2010/07/22. Filled 2009/01/08
- Distance of the pixel is equal with all courses in the case of a honeycomb
- Less number of transistors used
- Low cost
- It can increase the number of the pixels
- Good sensitivity
- It assumes seven pixels one unit