circle of confusion

a disk representing the image of a theoretical point made by a lens.

Medical dictionary. 2011.

Look at other dictionaries:

  • Circle of confusion — For the closely related topic in microscopy, see Point spread function. In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as… …   Wikipedia

  • circle of confusion — the indistinct circular patch formed by a lens representing the out of focus image of a single object point called also blur circle; compare circle of least confusion * * * Photog. a circular spot on a film, resulting from the degree to which a… …   Useful english dictionary

  • circle of confusion — Photog. a circular spot on a film, resulting from the degree to which a pencil of light reflected from the field of view is focused in front of or behind the film, or from aberration of the lens, or from both. [1905 10] * * * …   Universalium

  • circle of least confusion — physics : the minimum cross section of a symmetrical bundle of rays that have no common focus because of spherical aberration * * * Optics. the smallest cross section in a beam of paraxial rays, lying in the plane of least spherical aberration.… …   Useful english dictionary

  • Confusion (disambiguation) — Mental confusion is the inability to think clearly and quickly. Confusion may also refer to: Confusion and diffusion, a technical concept in cryptography Confusion (album), the debut album by Colombian pop singer Fatiniza Any of these songs:… …   Wikipedia

  • circle — 1. [TA] In anatomy, a ring shaped structure or group of structures, as formed by anastomosing arteries or veins, or by connected (communicating) nerves, 2. A line or process with every point approximately equidistant from the center. SYN:… …   Medical dictionary

  • circle of least confusion — Optics. the smallest cross section in a beam of paraxial rays, lying in the plane of least spherical aberration. [1865 70] * * * …   Universalium

  • disk of confusion — circle of confusion …   Useful english dictionary

  • Círculo de confusión — Contenido 1 Definición en óptica 2 Definición en fotografía 3 Veáse también 4 Fuentes 5 …   Wikipedia Español

  • List of circle topics — This list of circle topics includes things related to the geometric shape, either abstractly, as in idealizations studied by geometers, or concretely in physical space. It does not include metaphors like inner circle or circular reasoning in… …   Wikipedia

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