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distortion

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aberration

aberration  

n. (in optics) a defect in the image formed by an optical device (e.g. a lens). In chromatic aberration the image has coloured fringes as a result of the different extent to which light of different ...
Distortion

Distortion   Reference library

The Oxford Dictionary of Byzantium

Reference type:
Subject Reference
Current Version:
2005
Subject:
History, Early history (500 CE to 1500)
Length:
140 words

the alteration in shape or proportion in an image, frequently employed to convey values on a hierarchical scale, the

lens

lens  

A curved, ground, and polished piece of glass, moulded plastic, or other transparent material used for the refraction of light. A converging lens is one that brings the rays of a parallel beam of ...
orthoscopic eyepiece

orthoscopic eyepiece  

A design of eyepiece that usually consists of a cemented triplet field lens and a planoconvex eye lens. This combination provides good correction for chromatic aberration, spherical aberration, coma ...
Schmidt camera

Schmidt camera  

A wide-field telescopic camera first made in 1930 by the Estonian optician Bernhard Voldemar Schmidt (1879–1935); also called a Schmidt telescope or simply a Schmidt. It uses a spheroidal primary ...

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