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DictionarySeeaberrationlongitudinal aberration
longitudinal aberration[‚län·jə′tüd·ən·əl ‚ab·ə′rā·shən] (optics) The distance along the optical axis from the focus of paraxial rays to the point where rays coming from the outer edges of its lens or reflecting surface intersect this axis. In chromatic aberration, the distance along the optical axis between the foci of two standard colors. longitudinal aberration
lon·gi·tu·di·nal ab·er·ra·tionin spheric aberration, the distance separating the focus of paraxial and peripheral rays on the optic axis.lon·gi·tu·di·nal ab·er·ra·tion (lon'ji-tū'di-năl ab-ĕr-ā'shŭn) In spheric aberration, the distance separating the focus of paraxial and peripheral rays on the optic axis. longitudinal aberrationDeviation of a ray from the direction parallel to the optic axis.See also: aberration |