Birefringence
Birefringence is an optical property where a material has different refractive indices depending on the light direction or polarization. It often results from molecular orientation, stress, or crystallinity and is important in films, molded optical parts, interlayers, and transparent materials where distortion or clarity must be controlled.
See related terms:
Haze
Light Transmittance
Molecular Orientation
Optical Clarity
Refractive Index
Packaging cross-section showing aroma molecules blocked by a barrier layer.
Birefringence refers to the optical property of a material where the refractive index differs depending on the polarization and direction of light passing through it.