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 — /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… …
Cardinal point (optics) — For other uses, see Cardinal point (disambiguation). In Gaussian optics, the cardinal points consist of three pairs of points located on the optical axis of an ideal, rotationally symmetric, focal, optical system. For ideal systems, the basic… … Wikipedia
Radius of curvature (optics) — Radius of curvature has specific meaning and sign convention in optical design. A spherical lens or mirror surface has a center of curvature located in (x, y, z) either along or decentered from the system local optical axis. The vertex… … Wikipedia
photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such … Universalium
Dioptre — This article is about the unit of measure in optics. For other uses, see Diopter (disambiguation). A dioptre, or diopter, is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal… … Wikipedia
Visual Angle Illusion — The visual angle, V degrees, subtended by a viewed object sometimes looks larger or smaller than its actual value, creating a visual angle illusion (V illusion).These V illusions have been explicitly described by many vision researchers,… … Wikipedia
Oculaire — Une collection de différents oculaires. Un oculaire est un système optique complémentaire de l objectif. Il est utilisé dans les instruments tels que les microscopes ou les télescopes pour agrandir l image produite au plan focal de l objectif. Un … Wikipédia en Français
Visual system — The visual system includes the eyes, the connecting pathways through to the visual cortex and other parts of the brain. The illustration shows the mammalian system. The visual system is the part of the central nervous system which enables… … Wikipedia
Optical power — For the power of light, see Radiant flux and Luminous flux. Optical power (also referred to as dioptric power, refractive power, focusing power, or convergence power) is the degree to which a lens, mirror, or other optical system converges or… … Wikipedia
