TERMIUM Plus®

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CORRESPONDING IMAGE POINT [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-02-25

English

Subject field(s)
  • Mathematics
  • Optics
CONT

An identity involving the second partial derivatives of the characteristic function of an optical system leads to an important relation that must be satisfied if a surface element containing a point source is to be imaged accurately into a corresponding surface element at the image point. This is Abbe's sine condition(...)

French

Domaine(s)
  • Mathématiques
  • Optique
OBS

aplanétique : qui ne présente pas d'aberration géométrique.

Spanish

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Record 2 2004-03-12

English

Subject field(s)
  • Optics
DEF

The lens aberration resulting from the normal increase in refractive index of all common materials toward the blue end of the spectrum.

CONT

Chromatic aberration results from material dispersion. Because different colors of light refract by different amounts, an image point formed by light of one color does not coincide with the corresponding image point formed by light of a different color. This is not a geometrical aberration.

French

Domaine(s)
  • Optique
CONT

Lorsque vous observez le passage de la lumière blanche à travers un prisme, vous pouvez remarquer qu'elle se décompose en différentes couleurs. La lumière blanche est en réalité un mélange de toutes les couleurs, celles de l'arc en ciel. Or une lentille simple se comporte localement comme un prisme et a donc tendance à séparer les couleurs. L'image n'est alors nette que pour le bleu, que pour le vert ou que pour le rouge. C'est l'aberration chromatique. Afin de palier ce problème, qui rend donc les images floues, on adjoint plusieurs lentilles de nature différentes permettant ainsi de focaliser la plupart des couleurs en un même point. Si l'objectif possède deux lentilles, on parle de système achromatique et s'il en possède trois, de système apochromatique.

Spanish

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Record 3 1999-05-19

English

Subject field(s)
  • Photography
  • Optics
  • Computer Graphics
OBS

a space in connection with an optical system each of whose points is an image of a corresponding point in the object space.

French

Domaine(s)
  • Photographie
  • Optique
  • Infographie

Spanish

Save record 3

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