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Nokia patent for adjustable aperture could improve the camera on the next PureView device

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Nokia patent for adjustable aperture could improve the camera on the next PureView device
A patent awarded to Nokia just might solve the problem that cellphone cameras currently have. Either they are great at taking pictures in daylight or in low-light with a flash like the Nokia 808 PureView, or they take great pictures in low-light with no flash. The latter is what we see with the Nokia Lumia 920. The reason why these cameras can only do one or the other has to do with the setting of the aperture.

The Nokia Lumia 920 takes great low-light photos without a flash because of its large aperture size of f/2.0. The outstanding daylight pictures taken with the Nokia 808 PureView are due to the f/2.4 aperture on that phone's camera. If a cellphone camera can be made to adjust the aperture, perhaps an OEM like Nokia could deliver a handset with a camera that can adjust from a low aperture for daylight or a landscape shot to a larger aperture for low light or portrait pictures.



The technology involves using two electrodes, and an electrical circuit that applies voltage to the electrodes. In a nutshell, the idea is to use the current to squeeze an electroactive center unit which adjusts the aperture. Nokia also mentions that it looks to use its patent to make prior art versions of the technology less complex, easier to manufacture and consume less power.

Will we see this on the Nokia Lumia EOS when and if it ever gets announced?

source: NokiaPowerUser

Diagram from Nokia patent

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