Abstract

The spatial distribution of optical scatter or haze from tilted columnar birefringent films is often highly anisotropic, even when the films are illuminated at normal incidence.¹,² During a recent investigation some titania films were found to give asymmetric forward and backward scatter patterns that were visible on a plane white screen to the naked eye. Subsequently the use of the white painted inside surface of a hemispherical shell centred on the sample was found to improve visualization of the spatial distribution of scatter.¹

© 1995 Optical Society of America