compound eye


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compound eye

n.
The eye of most insects and some crustaceans, which is composed of many light-sensitive elements, each having its own refractive system and each forming a portion of an image.

compound eye

n
(Zoology) the convex eye of insects and some crustaceans, consisting of numerous separate light-sensitive units (ommatidia). See also ocellus

com′pound eye′


n.
an eye, typical of insects, composed of many individual light-sensitive units that form a mosaic of images on the retina.

compound eye

An eye, as of an insect or crustacean, consisting of hundreds or thousands of tiny light-sensitive parts, with each part creating a portion of an image.
Did You Know? The eyes have it—the important ability to see, that is. But not all eyes are created equal. Insects and other arthropods (which include lobsters and other crustaceans) have compound eyes, which are quite different from ours. The compound eye, greatly magnified, looks like a fencer's mask. It consists of many repeating units, called ommatidia, each of which is a separate light receptor. Some species' eyes have many ommatidia while others have only a few—the more ommatidia an eye has, the better it can resolve images. But even with many ommatidia, the typical compound eye is poor compared with ours at creating a sharp image. A honeybee, for example, sees only one-sixtieth as clearly as we do. However, the compound eye has other special talents. It is excellent at detecting motion, as the moving object passes from one ommatidium to the next. And some insects see ultraviolet light, which is invisible to us.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.compound eye - in insects and some crustaceans: composed of many light-sensitive elements each forming a portion of an image
eye, oculus, optic - the organ of sight
ommatidium - any of the numerous small cone-shaped eyes that make up the compound eyes of some arthropods
References in classic literature ?
In the second stage, answering to the chrysalis stage of butterflies, they have six pairs of beautifully constructed natatory legs, a pair of magnificent compound eyes, and extremely complex antennae; but they have a closed and imperfect mouth, and cannot feed: their function at this stage is, to search by their well-developed organs of sense, and to reach by their active powers of swimming, a proper place on which to become attached and to undergo their final metamorphosis.
They found the ancient creature had a primitive form of compound eye - an optical organ that consists of arrays of tiny visual cells, called ommatidia, similar to those of present-day bees.
Its instrumentation is comprised of 26 telescopes mounted on a single satellite platform which reminds you of the compound eye of an insect.
The SpotLight HJ is a newly-designed LED light with an inbuilt compound eye lens that focusses on accurate light shape control together with uniform light distribution.
Mantis shrimp Each clear outer facet of this compound eye sends light to a single photosensitive structure.
n of right hind leg, Mx4: length of fourth palpo mere of right maxillary palpus, IO, D and d: minimum distance between compound eyes, antero-posterior diameter and transverse diameter of right compound eye, respectively, PO: d/D.
And the scene in each of the tiny ommatidia (radial units composing compound eyes) that compose every compound eye is completely different with each passing instant.
There is a protocerebrum, connecting to the compound eye and other frontal filaments and organs, a deuto- and trito-cerebrum, which receive input from antennae and a ventral nerve cord ganglial network.
n of right antenna, IO, D and d: minimum distance between compound eyes, antero-posterior diameter and transverse diameter of right compound eye, respectively, on dorsal view of head, PO: d/D.
For obvious reasons, a hemispherical compound eye also has a much wider field of view than a mostly-flat simple eye with only a small aperture at the front.
3 times longer than wide; pedicel longer than broad; first flagellomere about as long as broad, longer than second flagellomere, remaining flagellomeres broader than long, except apical flagellomere much longer than broad; compound eye 2.
In one piece, Looking Glass, which resembles an insect's compound eye, lots of adjoined transparent compartments each hold a glass model of the eye of an endangered species.