Researchers Say Chromatic Aberration May Soon Be A Thing Of The Past

Researchers Say Chromatic Aberration May Soon Be A Thing Of The Past - Thanks to a University in America, photographers may not have to worry about purple fringing/chromatic aberration spoiling their photos any more.

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Voigtlander Zoomar 36-82mm f/2.8 Sample Photo showing purple fringing around the branches

Voigtlander Zoomar 36-82mm f/2.8 sample photo showing purple fringing around the branches.


Researchers from Harvard University have found a way to stop chromatic aberration from appearing in photographs and the technology is something we will, hopefully, see appearing in smartphones and lenses. 

The optical systems built into smartphone cameras and lenses hasn't changed much since the mid-1700s and even though advancements have been made to reduce chromatic aberration/purple fringing, it's not something, as of yet, we've managed to eliminate completely. However, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have taken one step closer to doing this. 

The SEAS researchers have created something called a 'metacorrector' which they say is a 'single-layer surface of nanostructures that can correct chromatic aberrations across the visible spectrum' and when tested, the metacorrector eliminated chromatic aberrations in a commercial lens across the entire visible light spectrum. 


Images of a microscopic optical resolution test, imaged with (left) and without (right) the metacorrector.

Images of a microscopic optical resolution test, imaged with (left) and without (right) the metacorrector.


"Using metacorrectors is fundamentally different from conventional methods of aberration correction, such as cascading refractive optical components or using diffractive elements, since it involves nanostructure engineering," said Alexander Zhu, a graduate student at SEAS and co-author of the study. "This means we can go beyond the material limitations of lenses and have much better performances."

The research team are now working on the efficiency of the metacorrectors for use in high-end and miniature optical devices. 

(Via TechSpot)

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