By Lisa Zyga @ PhysOrg.com
Today’s digital micro-cameras and other optical devices use lenses based on human-type single aperture eyes. These lenses, which are manufactured with macroscopic technology, do not get thinner than about 5 mm.
However, insects such as fruit flies and moths have a completely different type of eye called compound eyes to accommodate the animals’ small size and low brain processing capabilities. Compound eyes consist of up to tens of thousands of tiny sensors called “ommatidia” that detect light and sometimes color. Flies and moths see images made of a combination of inputs from the ommatidia that point in different directions, forming a large field of view while the total volume consumption remains small.
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