Nokia:photolife after PureView

The Finnish giant is continuing the glorious tradition of equipping their mobile devices the most advanced cameras.

Currently PureView-technology implemented in the 41-megapixel camera phone Nokia Symbian-808 PureView, admirable features multiple zoom photos and visuals, with no loss of quality and without the need for optical zoom. But what next?

Decorated Nokia patent application number 20120205518 describes a detector detecting the photons from the graphene layer on top of which lay numerous finger electrodes necessary for the collection of holes, electrons produced during the passage of photons of light. Graphene nanoribbons acting as a field effect transistor to amplify the resulting voltage and transmits its control electronics. Several layers of light and to capture the voltage gain can be stacked on each other with paved between the color filters so that each pixel in the sensor was able to easily identify different colors.

Using graphene has its reasons, the main of which is enclosed in its transparency. A single layer of carbon element absorbs only 2.3% of incoming light, and does so uniformly on the entire spectrum, including infrared, visible and ultraviolet. As a result, graphene sensor is better than conventional CMOS sensors, handles in low light conditions.

Graphene will considerably reduce the thickness of the photocell: Imagine a new generation of Nokia 808 PureView without a huge, protruding out the rear camera module.

The production process is tied to the graphene would be simpler than the current factory CMOS technology, and materials used will be cheaper.

Currently, researchers are struggling with the shortcomings of graphene sensors, such as lack of photosensitivity and the generation of a large amount of noise.