optic axis

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Definitions from WordNet

Noun optic axis has 1 sense

principal axis, optic axis - a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted
--₁ is a kind of axis

Definitions from the Web

Optic Axis

Noun:

The imaginary line passing through the center of an optical system or lens.

Example Sentence: The optic axis of the microscope needs to be aligned for clear vision.

Noun:

A line in a crystal along which the double refraction of light does not occur.

Example Sentence: The gemstone exhibits birefringence along its optic axis.

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