What is the meaning of optic axis?

noun

  • In a doubly refracting crystal, the line in the direction of which no double refraction occurs.
    • usage: "a crystal may have either one or two optic axes"
  • A line that passes through the center of curvature of a lens so that light is neither reflected nor refracted.
    • usage: "in a normal eye the optic axis is the direction in which objects are seen most distinctly"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). optic axis. Retrieved September 20, 2026, from http://smartdefine.org/optic_axis/definitions/1298855
ChicagoWordNet. 2010. "optic axis" http://smartdefine.org/optic_axis/definitions/1298855 (accessed September 20, 2026).
HarvardWordNet 2010, optic axis, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/optic_axis/definitions/1298855>.
MLAWordNet. "optic axis" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/optic_axis/definitions/1298855>