Optic Axis — synonyms, definition

1. optic axis (Noun)

1 synonym
principal axis
2 definitions

optic axis (Noun) — In a doubly refracting crystal, the line in the direction of which no double refraction occurs. ex. "a crystal may have either one or two optic axes"

optic axis (Noun) — A line that passes through the centre of curvature of a lens so that light is neither reflected nor refracted. ex. "in a normal eye the optic axis is the direction in which objects are seen most distinctly"

1 type of
axis