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About: Focal cloud     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: yago:WikicatMirrorsyago:Artifact100021939yago:Device103183080yago:Instrumentality103575240yago:Mirror103773035yago:Object100002684yago:PhysicalEntity100001930yago:Reflector104069276bookyago:Whole100003553 New Facet based on Instances of this Class

A focal cloud is the collection of focal points of an imperfect lens or parabolic reflector whether optical, electrostatic or electromagnetic. This includes parabolic antennas and lens-type reflective antennas of all kinds. The effect is analogous to the circle of confusion in photography.