TERMIUM Plus®

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SURFACE CAUSTIQUE [1 record]

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Alphabetical list of terms

Record 1 2005-02-04

English

Subject field(s)
  • Optics
  • Mathematics
DEF

The surface or form generated by the revolution of the caustic curve about the optical axis of the reflecting or refracting system converging the light rays.

OBS

Caustic curves and surfaces are called catacaustic when formed by reflection, and diacaustic when formed by refraction.

French

Domaine(s)
  • Optique
  • Mathématiques
CONT

Si on éclaire un miroir sphérique avec un faisceau parallèle à l'axe optique du système, on peut constater que les rayons ne convergent pas en un point unique, il n'y a pas stigmatisme. Les rayons sont tangents à une surface qui est la surface caustique du miroir.

OBS

Le terme caustique désigne d'une façon générale l'enveloppe des rayons lumineux issus d'un point à distance finie (caustique «au flambeau» ou infinie (caustique «au soleil») après modification par un instrument optique.

Spanish

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