New sensor technology could put a larger cameras into smaller packages
Nokia may have the best smartphone camera system around with its 41 megapixel Pureview camera. We are all hoping to see similar Pureview technology (but on a smaller scale) with the Lumia 920 Windows Phone 8 devices. While the Pureview cameras have turned heads, what Nokia has up it's sleeve should take the Nokia cameras to a new level and eliminate that pesky hump in the process.
Nokia has filed a patent application for the sensing of photons utilizing graphene technology. Graphene is a two-dimensional material made of a single atomic layer of carbon layers. It allows photo sensors to be smaller than the current crop of CMOS sensor and capture light photons across a broad spectrum of frequencies of visible light. Combined with the transparency of the graphene layers, this should make the graphene sensors better low-light performers than what we have today.
In a nutshell, we are looking at potentially a smaller, thinner, better low-light performing photo sensor that may give us the 41 megapixel Pureview camera without the hump.
Graphene has been around for some time and is found in a wide range of applications ranging from solar cells to sensors capable of detecting a single molecules of toxic gases. The challenge is adapting the sensitivity of the graphene layers for photographic purposes.
The patent application calls for a image sensor comprised of one or more photo sensing layers of graphene. The graphene will absorb photons effectively in visible, infrared and ultraviolet frequencies. The improvement in low light performance rests with the transparency of the graphene layers. Only 2.3% of passing light is absorbed by the graphene layers, filtering light more evenly across the light spectrum.
We should see lower manufacturing costs, due to the lower materials cost, and an overall smaller sensor with the graphene. While the technology is promising there are still a lot of questions to be answered as this new photon sensing technology emerges. What type megapixel count are we looking at?
While Nokia seems to be getting a handle on things with the patent filing, I don't think we'll see graphene sensors any time soon. Still the prospect of a smaller, thinner high resolution sensor with better low light performance does sound very appealing. We could see that 41 megapixel camera easily fitted inside the form factor of the Lumia 9xx phones. Now if we could just get a mechanical shutter....
If you're feeling adventurous, you can find Nokia's patent filing here at the U.S. Patent and Trademark Office.
Source: unwiredview; Thanks, Miguel, for the tip!
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