2005•Encyclopedia of RF and Microwave EngineeringRequires access

Geometrical Optics

Danilo Erricolo

Abstract

Abstract A tutorial overview of geometric optics is given. The article begins with a historical introduction, followed by a review of the basic principles of geometric optics, and then the following topics are discussed: (1) paraxial approximation and ray matrix optics, (2) third‐order aberrations, (3) relationships between geometric optics and antenna theory, and (4) extensions to geometric optics.

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Key concepts: Paraxial approximation, Gaussian optics, Geometrical optics, Physical optics, Optics, Physics, Computer science, Beam (structure)