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optic axis

   Also found in: Medical, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.04 sec.
optic axis
n.
An optical path through a crystal along which a ray of light can pass without undergoing double refraction.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.optic axis - in a doubly refracting crystal, the line in the direction of which no double refraction occurs; "a crystal may have either one or two optic axes"
axis - a straight line through a body or figure that satisfies certain conditions
2.optic axis - a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted; "in a normal eye the optic axis is the direction in which objects are seen most distinctly"
principal axis
axis - a straight line through a body or figure that satisfies certain conditions


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