Les axicons sont une famille de systèmes optiques à symétrie cylindrique qui produisent une ligne de focalisation plutôt qu'un seul point de focalisation. L'axicon le plus connu est la lentille conique.
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Axicon — An axicon is a specialized type of lens which has a conical surface. An axicon images a point source into a line along the optic axis, or transforms a laser beam into a ring. [cite web|url=http://www.optics.arizona.edu/OPTI696/2005/axicon Proteep … Wikipedia
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