I recently posted an Article on ‘We Have more colors Than we See’.
I mentioned there that there are infinite colors and we see only seven because of our limitations.
I found an interesting article on the same subject to-day.
A new Digital Camera developed mimics Arthropods, has 180 Degree vision.
It provides the entire field of view. By contrast, our eyes can only see a narrow angle ahead of us, and the images they form are only sharp at the very center of our visual field.
“Arthropods—insects,spiders and their kin—have compound eyes, which consist of hundreds or thousands of individual units or ommatidia. Each one has its own lens and light detectors. They form separate images, which are then united in the brain. And since arthropods greatly outnumber all other animals, the vast majority of eyes are compound ones.
Now, John Rogers from the University of Illinois at Urbana-Champaign has developed a camera that mimics compound eyes. It might not have the same resolution as a state-of-the-art digital camera, but it compensates with many advantages that make it ideal for surveillance. Perhaps in the future, we’ll be watched by man-made flies on the walls.
Rogers chose to mimic apposition eyes—a type of compound eye where each ommatidium sees a narrow part of the insect’s visual field, effectively capturing just one pixel of a full image…
Compound eyes also have an almost infinite depth of field—that is, objects stay in focus regardless of how far they are from the eye. So, flies can clearly see something far and near objects at the same time, without having to adjust any lenses. And compound eyes are also exquisitely sensitive to movement, since their owners can compare the passage of shapes across different ommatidia.
Wide angles. Sharp focus at all distances. Sensitivity to movement. If you were building a surveillance camera, these are exactly the properties you’d want. Indeed, Rogers thinks that surveillance is an obvious application for his fly-eye design.”
Source:
http://phenomena.nationalgeographic.com/2013/05/02/insect-eye-digital-camera-sees-what-you-just-did/
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