ALL meanings of optic axis
op·tic ax·is
O o - noun optic axis (in a crystal exhibiting double refraction) the direction or directions, uniaxial or biaxial, respectively, along which this phenomenon does not occur. 1
- noun optic axis the direction in a uniaxial crystal or one of the two directions in a biaxial crystal along which a ray of unpolarized light may pass without undergoing double refraction 0
- noun optic axis in anisotropic crystals, a direction along which the velocity of light does not depend on the polarization of the light 0