Artificial eyeball does away with distortion
Monday, 18. August 2008, 07:29:18
Mimicking the curves of a human retina has enabled a digital image sensor to take wide-angle pictures without distortion. This is possible thanks to an improved method of transferring silicon sensors onto a curved surface.The electronic eyeball design can allow small cameras to capture wide-angle views with low distortion. That could be useful in a range of situations, from policing, to attaching cameras to wildlife.
Conventional film and digital cameras use a flat surface to capture an image and as a result are unable to capture a wide field of view without distortion. Optics designed to correct such distortions can be complex and expensive.Silicon doesn't bend easily and can't be forced into a hemispherical form without creases appearing in the material.
John Rogers at the University of Illinois at Urbana-Champagne and colleagues have now worked out a way around those problems, using conventional chip manufacturing technology.
Source: http://technology.newscientist.com/article/dn14477-artificial-eyeball-does-away-with-distortion.html
Conventional film and digital cameras use a flat surface to capture an image and as a result are unable to capture a wide field of view without distortion. Optics designed to correct such distortions can be complex and expensive.Silicon doesn't bend easily and can't be forced into a hemispherical form without creases appearing in the material.
John Rogers at the University of Illinois at Urbana-Champagne and colleagues have now worked out a way around those problems, using conventional chip manufacturing technology.
Source: http://technology.newscientist.com/article/dn14477-artificial-eyeball-does-away-with-distortion.html
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