vergence

vergence
A disjunctive movement of the eyes in which the fixation axes are not parallel, as in convergence or divergence. [L. vergo, to incline, to turn]
- v. of lens the reciprocal of the principal focal distance used as a measure of the divergence or convergence of parallel rays.

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ver·gence 'vər-jən(t)s n a movement of one eye in relation to the other

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ver·gence (vurґjəns) [L. vergere to bend] 1. the amount of convergence or divergence of a pencil of rays entering or leaving a lens or mirror, expressed as the reciprocal of the distance from the lens or mirror to the focus of the rays. For rays through a principal focus, the vergence is equal to the focal power of the lens or mirror. See convergence (def. 2) and divergence (def. 1). 2. a disjunctive reciprocal rotation of both eyes around their horizontal, vertical, or anteroposterior axes such that the axes of fixation are not parallel. The kind of vergence is indicated by a prefix. See convergence (def. 3), divergence (def. 2), infravergence, supravergence, and see duction and version (def. 5).

Medical dictionary. 2011.

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  • vergence — [ vɛrʒɑ̃s ] n. f. • 1953; de convergence, divergence ♦ Phys. Inverse de la distance focale d un système optique centré. Vergence positive (⇒ convergence) , négative (⇒ divergence) . ● vergence nom féminin (de convergence) Inverse de la distance… …   Encyclopédie Universelle

  • vergence — 1902, from VERGE (Cf. verge) + ENCE (Cf. ence) …   Etymology dictionary

  • Vergence — Vergences d un faisceau. Elle est inversement proportionnelle à la distance de la focale. En optique géométrique, la vergence est une grandeur qui sert à caractériser les propriétés de focalisation d un système. C est une grandeur algébrique, qui …   Wikipédia en Français

  • Vergence — For other uses, see Vergence (disambiguation). A vergence is the simultaneous movement of both eyes in opposite directions to obtain or maintain single binocular vision.[1]. The two eyes converge to point to the same object …   Wikipedia

  • vergence — /ˈvɜdʒəns/ (say verjuhns) noun 1. Optics the inward or outward refraction of light in convergence or divergence. 2. the movement of the eyes which produces convergence (positive vergence) when the eyes turn in towards each other, or divergence… …  

  • vergence — lęšio laužiamoji geba statusas T sritis Standartizacija ir metrologija apibrėžtis Dydis, atvirkščiai proporcingas lęšio židinio nuotoliui. Matavimo vienetas – dioptrija. Žymimas dpt: 1 dpt = 1 m⁻¹. atitikmenys: angl. dioptric power; focal power;… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • Vergence (disambiguation) — Vergence can refer to: *Vergence, the simultaneous movement of both eyes in opposite directions, needed for binocular vision *Vergence (optics), the reciprocal of the distance between the point of focus and a reference plane *Vergence (geology),… …   Wikipedia

  • Vergence (geology) — In structural geology, the vergence of a deformed rock is the direction in which the next antiform can be found. Geometrically the vergence is the up dip direction of the bedding perpendicular to the planes of the regional foliation in the rock.… …   Wikipedia

  • Vergence (optics) — The vergence (typical symbol: L ) of a light bundle in optics is the reciprocal of the distance between the point of focus and a reference plane. It is measured in dioptres (1 D = 1 m 1). Vergence can also be understood as a measure of the… …   Wikipedia

  • vergence d’une lentille — lęšio laužiamoji geba statusas T sritis fizika atitikmenys: angl. lens power vok. Brechkraft der Linse, f; Brechungskraft der Linse, f rus. оптическая сила линзы, f; преломляющая способность линзы, f pranc. puissance dioptrique d’une lentille, f; …   Fizikos terminų žodynas

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